better support for new C++ standards, for README.md and more options in build-in-docker.sh

INSTALL

@@ -1 +0,0 @@
-/usr/share/automake-1.15/INSTALL

INSTALL

@@ -0,0 +1,136 @@
+Install Software
+================
+
+There are prebuilt software packages in the repositories, look in
+https://repository.mrw.sh for your operating system.
+
+Note: PublicKey has changed on Novmber 1st 2015, please import the new
+key.
+
+Linux
+-----
+
+There are package repositories for most distributions at https://repository.mrw.sh.
+
+### Ubuntu and Debian
+
+To accept my signature, install my key:
+
+        wget -O- https://repository.mrw.sh/PublicKey \
+            | sudo apt-key add -
+
+You can install all software using your package manager (`apt`), first install the repository:
+
+        sudo apt-get install -y wget software-properties-common apt-transport-https
+        sudo apt-add-repository https://repository.mrw.sh
+        sudo apt-get update -y
+Then you can install any project you wish, e.g. [`webtester`](https://mrw.sh/development/webtester):
+
+        sudo apt-get install webtester -y
+
+### OpenSUSE
+
+To accept my signature, install my key:
+
+        wget https://repository.mrw.sh/PublicKey
+        rpm --import PublicKey
+
+You can use your packagemanager (`zypper` or _YaST_). First install the repostitory:
+
+        zypper ar https://repository.mrw.sh/opensuse/marc-waeckerlin.repo
+
+Then install packages from the repository, e.g. [`webtester`](https://mrw.sh/development/webtester):
+
+        zypper install webtester
+
+In case of trouble: Check if your version of OpenSUSE is supported,
+use `lsb_release -rs` to get the version of your OpenSUSE:
+https://drepository.mrw.sh/opensuse
+
+### Fedora
+
+To accept my signature, install my key:
+
+        wget https://repository.mrw.sh/PublicKey
+        rpm --import PublicKey
+
+You can use your packagemanager (`dnf`). First install the repository:
+
+        dnf install 'dnf-command(config-manager)'
+        dnf config-manager --add-repo https://repository.mrw.sh/fedora/marc-waeckerlin.repo
+
+Then install packages from the repository, e.g. [`webtester`](https://mrw.sh/development/webtester):
+
+        dnf install webtester
+
+In case of trouble: Check if your version of Fedora is supported, use `lsb_release -rs` to get the version of your Fedora: https://repository.mrw.sh/fedora
+
+### CentOS
+
+To accept my signature, install my key:
+
+        wget https://repository.mrw.sh/PublicKey
+        rpm --import PublicKey
+
+You can use your packagemanager (`yum`). First install the repository:
+
+        yum install wget
+        wget -O/etc/yum.repos.d/marc-waeckerlin.repo https://repository.mrw.sh/centos/marc-waeckerlin.repo
+
+Then install packages from the repository, e.g. [`webtester`](https://mrw.sh/development/webtester):
+
+        yum install webtester
+
+In case of trouble: Check if your version of CentOS is supported, use lsb_release -rs to get the version of your CentOS: https://repository.mrw.sh/centos
+
+### Mageia
+
+To accept my signature, install my key:
+
+        wget https://repository.mrw.sh/PublicKey
+        rpm --import PublicKey
+
+You can use your packagemanager (`dnf`). First install the repository:
+
+        dnf install 'dnf-command(config-manager)'
+        dnf config-manager --add-repo https://repository.mrw.sh/mageia/marc-waeckerlin.repo
+
+Then install packages from the repository, e.g. [`webtester`](https://mrw.sh/development/webtester):
+
+        dnf install webtester
+
+### Other Linux Distributions
+
+Either use the nearest possible distribution, or use alien to convert from another distribution to your preferred package format, or compile the project yourself (see below).
+
+Windows
+-------
+
+Download from https://repository.mrw.sh/windows
+
+MacOSX
+------
+
+You need e.g. Mac Ports to compile. Install the following dependencies:
+
+        sudo port install subversion svn2cl doxygen graphviz cppunit libtool boost log4cxx qt5-mac
+
+Fix libtool-bug:
+
+        sudo ln -s /opt/local/bin/glibtoolize /opt/local/bin/libtoolize
+
+Compile from Source
+-------------------
+
+For all unsupported operating systems, including MacOSX.
+
+To compile, please download the tar-sources from: https://repository.mrw.sh/sources
+
+Then untar the package and use the common commands, e.g. for version `1.0.2` of a project named project, that means:
+
+        tar xzf project-1.0.2.tar.gz
+        cd project-1.0.2
+        ./bootstrap.sh
+        ./configure
+        make
+        sudo make install

ax_cxx_compile_stdcxx.m4

@@ -0,0 +1,948 @@
+# ===========================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the specified
+#   version of the C++ standard.  If necessary, add switches to CXX and
+#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
+#   or '14' (for the C++14 standard).
+#
+#   The second argument, if specified, indicates whether you insist on an
+#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
+#   -std=c++11).  If neither is specified, you get whatever works, with
+#   preference for an extended mode.
+#
+#   The third argument, if specified 'mandatory' or if left unspecified,
+#   indicates that baseline support for the specified C++ standard is
+#   required and that the macro should error out if no mode with that
+#   support is found.  If specified 'optional', then configuration proceeds
+#   regardless, after defining HAVE_CXX${VERSION} if and only if a
+#   supporting mode is found.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
+#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
+#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
+#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
+#   Copyright (c) 2015 Paul Norman <penorman@mac.com>
+#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
+#   Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 10
+
+dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
+dnl  (serial version number 13).
+
+AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
+  m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"],
+        [$1], [14], [ax_cxx_compile_alternatives="14 1y"],
+        [$1], [17], [ax_cxx_compile_alternatives="17 1z"],
+        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$2], [], [],
+        [$2], [ext], [],
+        [$2], [noext], [],
+        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
+        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
+  AC_LANG_PUSH([C++])dnl
+  ac_success=no
+
+  m4_if([$2], [noext], [], [dnl
+  if test x$ac_success = xno; then
+    for alternative in ${ax_cxx_compile_alternatives}; do
+      switch="-std=gnu++${alternative}"
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+
+  m4_if([$2], [ext], [], [dnl
+  if test x$ac_success = xno; then
+    dnl HP's aCC needs +std=c++11 according to:
+    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
+    dnl Cray's crayCC needs "-h std=c++11"
+    for alternative in ${ax_cxx_compile_alternatives}; do
+      for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do
+        cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+        AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                       $cachevar,
+          [ac_save_CXX="$CXX"
+           CXX="$CXX $switch"
+           AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+            [eval $cachevar=yes],
+            [eval $cachevar=no])
+           CXX="$ac_save_CXX"])
+        if eval test x\$$cachevar = xyes; then
+          CXX="$CXX $switch"
+          if test -n "$CXXCPP" ; then
+            CXXCPP="$CXXCPP $switch"
+          fi
+          ac_success=yes
+          break
+        fi
+      done
+      if test x$ac_success = xyes; then
+        break
+      fi
+    done
+  fi])
+  AC_LANG_POP([C++])
+  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
+    if test x$ac_success = xno; then
+      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
+    fi
+  fi
+  if test x$ac_success = xno; then
+    HAVE_CXX$1=0
+    AC_MSG_NOTICE([No compiler with C++$1 support was found])
+  else
+    HAVE_CXX$1=1
+    AC_DEFINE(HAVE_CXX$1,1,
+              [define if the compiler supports basic C++$1 syntax])
+  fi
+  AC_SUBST(HAVE_CXX$1)
+])
+
+
+dnl  Test body for checking C++11 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+)
+
+
+dnl  Test body for checking C++14 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+)
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_17],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_17
+)
+
+dnl  Tests for new features in C++11
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+  namespace test_static_assert
+  {
+
+    template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+  }
+
+  namespace test_final_override
+  {
+
+    struct Base
+    {
+      virtual void f() {}
+    };
+
+    struct Derived : public Base
+    {
+      virtual void f() override {}
+    };
+
+  }
+
+  namespace test_double_right_angle_brackets
+  {
+
+    template < typename T >
+    struct check {};
+
+    typedef check<void> single_type;
+    typedef check<check<void>> double_type;
+    typedef check<check<check<void>>> triple_type;
+    typedef check<check<check<check<void>>>> quadruple_type;
+
+  }
+
+  namespace test_decltype
+  {
+
+    int
+    f()
+    {
+      int a = 1;
+      decltype(a) b = 2;
+      return a + b;
+    }
+
+  }
+
+  namespace test_type_deduction
+  {
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static const bool value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static const bool value = true;
+    };
+
+    template < typename T1, typename T2 >
+    auto
+    add(T1 a1, T2 a2) -> decltype(a1 + a2)
+    {
+      return a1 + a2;
+    }
+
+    int
+    test(const int c, volatile int v)
+    {
+      static_assert(is_same<int, decltype(0)>::value == true, "");
+      static_assert(is_same<int, decltype(c)>::value == false, "");
+      static_assert(is_same<int, decltype(v)>::value == false, "");
+      auto ac = c;
+      auto av = v;
+      auto sumi = ac + av + 'x';
+      auto sumf = ac + av + 1.0;
+      static_assert(is_same<int, decltype(ac)>::value == true, "");
+      static_assert(is_same<int, decltype(av)>::value == true, "");
+      static_assert(is_same<int, decltype(sumi)>::value == true, "");
+      static_assert(is_same<int, decltype(sumf)>::value == false, "");
+      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+      return (sumf > 0.0) ? sumi : add(c, v);
+    }
+
+  }
+
+  namespace test_noexcept
+  {
+
+    int f() { return 0; }
+    int g() noexcept { return 0; }
+
+    static_assert(noexcept(f()) == false, "");
+    static_assert(noexcept(g()) == true, "");
+
+  }
+
+  namespace test_constexpr
+  {
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+    {
+      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+    }
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c(const CharT *const s) noexcept
+    {
+      return strlen_c_r(s, 0UL);
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("1") == 1UL, "");
+    static_assert(strlen_c("example") == 7UL, "");
+    static_assert(strlen_c("another\0example") == 7UL, "");
+
+  }
+
+  namespace test_rvalue_references
+  {
+
+    template < int N >
+    struct answer
+    {
+      static constexpr int value = N;
+    };
+
+    answer<1> f(int&)       { return answer<1>(); }
+    answer<2> f(const int&) { return answer<2>(); }
+    answer<3> f(int&&)      { return answer<3>(); }
+
+    void
+    test()
+    {
+      int i = 0;
+      const int c = 0;
+      static_assert(decltype(f(i))::value == 1, "");
+      static_assert(decltype(f(c))::value == 2, "");
+      static_assert(decltype(f(0))::value == 3, "");
+    }
+
+  }
+
+  namespace test_uniform_initialization
+  {
+
+    struct test
+    {
+      static const int zero {};
+      static const int one {1};
+    };
+
+    static_assert(test::zero == 0, "");
+    static_assert(test::one == 1, "");
+
+  }
+
+  namespace test_lambdas
+  {
+
+    void
+    test1()
+    {
+      auto lambda1 = [](){};
+      auto lambda2 = lambda1;
+      lambda1();
+      lambda2();
+    }
+
+    int
+    test2()
+    {
+      auto a = [](int i, int j){ return i + j; }(1, 2);
+      auto b = []() -> int { return '0'; }();
+      auto c = [=](){ return a + b; }();
+      auto d = [&](){ return c; }();
+      auto e = [a, &b](int x) mutable {
+        const auto identity = [](int y){ return y; };
+        for (auto i = 0; i < a; ++i)
+          a += b--;
+        return x + identity(a + b);
+      }(0);
+      return a + b + c + d + e;
+    }
+
+    int
+    test3()
+    {
+      const auto nullary = [](){ return 0; };
+      const auto unary = [](int x){ return x; };
+      using nullary_t = decltype(nullary);
+      using unary_t = decltype(unary);
+      const auto higher1st = [](nullary_t f){ return f(); };
+      const auto higher2nd = [unary](nullary_t f1){
+        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+      };
+      return higher1st(nullary) + higher2nd(nullary)(unary);
+    }
+
+  }
+
+  namespace test_variadic_templates
+  {
+
+    template <int...>
+    struct sum;
+
+    template <int N0, int... N1toN>
+    struct sum<N0, N1toN...>
+    {
+      static constexpr auto value = N0 + sum<N1toN...>::value;
+    };
+
+    template <>
+    struct sum<>
+    {
+      static constexpr auto value = 0;
+    };
+
+    static_assert(sum<>::value == 0, "");
+    static_assert(sum<1>::value == 1, "");
+    static_assert(sum<23>::value == 23, "");
+    static_assert(sum<1, 2>::value == 3, "");
+    static_assert(sum<5, 5, 11>::value == 21, "");
+    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+  }
+
+  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+  // because of this.
+  namespace test_template_alias_sfinae
+  {
+
+    struct foo {};
+
+    template<typename T>
+    using member = typename T::member_type;
+
+    template<typename T>
+    void func(...) {}
+
+    template<typename T>
+    void func(member<T>*) {}
+
+    void test();
+
+    void test() { func<foo>(0); }
+
+  }
+
+}  // namespace cxx11
+
+#endif  // __cplusplus >= 201103L
+
+]])
+
+
+dnl  Tests for new features in C++14
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+  namespace test_polymorphic_lambdas
+  {
+
+    int
+    test()
+    {
+      const auto lambda = [](auto&&... args){
+        const auto istiny = [](auto x){
+          return (sizeof(x) == 1UL) ? 1 : 0;
+        };
+        const int aretiny[] = { istiny(args)... };
+        return aretiny[0];
+      };
+      return lambda(1, 1L, 1.0f, '1');
+    }
+
+  }
+
+  namespace test_binary_literals
+  {
+
+    constexpr auto ivii = 0b0000000000101010;
+    static_assert(ivii == 42, "wrong value");
+
+  }
+
+  namespace test_generalized_constexpr
+  {
+
+    template < typename CharT >
+    constexpr unsigned long
+    strlen_c(const CharT *const s) noexcept
+    {
+      auto length = 0UL;
+      for (auto p = s; *p; ++p)
+        ++length;
+      return length;
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("x") == 1UL, "");
+    static_assert(strlen_c("test") == 4UL, "");
+    static_assert(strlen_c("another\0test") == 7UL, "");
+
+  }
+
+  namespace test_lambda_init_capture
+  {
+
+    int
+    test()
+    {
+      auto x = 0;
+      const auto lambda1 = [a = x](int b){ return a + b; };
+      const auto lambda2 = [a = lambda1(x)](){ return a; };
+      return lambda2();
+    }
+
+  }
+
+  namespace test_digit_separators
+  {
+
+    constexpr auto ten_million = 100'000'000;
+    static_assert(ten_million == 100000000, "");
+
+  }
+
+  namespace test_return_type_deduction
+  {
+
+    auto f(int& x) { return x; }
+    decltype(auto) g(int& x) { return x; }
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static constexpr auto value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static constexpr auto value = true;
+    };
+
+    int
+    test()
+    {
+      auto x = 0;
+      static_assert(is_same<int, decltype(f(x))>::value, "");
+      static_assert(is_same<int&, decltype(g(x))>::value, "");
+      return x;
+    }
+
+  }
+
+}  // namespace cxx14
+
+#endif  // __cplusplus >= 201402L
+
+]])
+
+
+dnl  Tests for new features in C++17
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[
+
+// If the compiler admits that it is not ready for C++17, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201703L
+
+#error "This is not a C++17 compiler"
+
+#else
+
+#include <initializer_list>
+#include <utility>
+#include <type_traits>
+
+namespace cxx17
+{
+
+  namespace test_constexpr_lambdas
+  {
+
+    constexpr int foo = [](){return 42;}();
+
+  }
+
+  namespace test::nested_namespace::definitions
+  {
+
+  }
+
+  namespace test_fold_expression
+  {
+
+    template<typename... Args>
+    int multiply(Args... args)
+    {
+      return (args * ... * 1);
+    }
+
+    template<typename... Args>
+    bool all(Args... args)
+    {
+      return (args && ...);
+    }
+
+  }
+
+  namespace test_extended_static_assert
+  {
+
+    static_assert (true);
+
+  }
+
+  namespace test_auto_brace_init_list
+  {
+
+    auto foo = {5};
+    auto bar {5};
+
+    static_assert(std::is_same<std::initializer_list<int>, decltype(foo)>::value);
+    static_assert(std::is_same<int, decltype(bar)>::value);
+  }
+
+  namespace test_typename_in_template_template_parameter
+  {
+
+    template<template<typename> typename X> struct D;
+
+  }
+
+  namespace test_fallthrough_nodiscard_maybe_unused_attributes
+  {
+
+    int f1()
+    {
+      return 42;
+    }
+
+    [[nodiscard]] int f2()
+    {
+      [[maybe_unused]] auto unused = f1();
+
+      switch (f1())
+      {
+      case 17:
+        f1();
+        [[fallthrough]];
+      case 42:
+        f1();
+      }
+      return f1();
+    }
+
+  }
+
+  namespace test_extended_aggregate_initialization
+  {
+
+    struct base1
+    {
+      int b1, b2 = 42;
+    };
+
+    struct base2
+    {
+      base2() {
+        b3 = 42;
+      }
+      int b3;
+    };
+
+    struct derived : base1, base2
+    {
+        int d;
+    };
+
+    derived d1 {{1, 2}, {}, 4};  // full initialization
+    derived d2 {{}, {}, 4};      // value-initialized bases
+
+  }
+
+  namespace test_general_range_based_for_loop
+  {
+
+    struct iter
+    {
+      int i;
+
+      int& operator* ()
+      {
+        return i;
+      }
+
+      const int& operator* () const
+      {
+        return i;
+      }
+
+      iter& operator++()
+      {
+        ++i;
+        return *this;
+      }
+    };
+
+    struct sentinel
+    {
+      int i;
+    };
+
+    bool operator== (const iter& i, const sentinel& s)
+    {
+      return i.i == s.i;
+    }
+
+    bool operator!= (const iter& i, const sentinel& s)
+    {
+      return !(i == s);
+    }
+
+    struct range
+    {
+      iter begin() const
+      {
+        return {0};
+      }
+
+      sentinel end() const
+      {
+        return {5};
+      }
+    };
+
+    void f()
+    {
+      range r {};
+
+      for (auto i : r)
+      {
+        [[maybe_unused]] auto v = i;
+      }
+    }
+
+  }
+
+  namespace test_lambda_capture_asterisk_this_by_value
+  {
+
+    struct t
+    {
+      int i;
+      int foo()
+      {
+        return [*this]()
+        {
+          return i;
+        }();
+      }
+    };
+
+  }
+
+  namespace test_enum_class_construction
+  {
+
+    enum class byte : unsigned char
+    {};
+
+    byte foo {42};
+
+  }
+
+  namespace test_constexpr_if
+  {
+
+    template <bool cond>
+    int f ()
+    {
+      if constexpr(cond)
+      {
+        return 13;
+      }
+      else
+      {
+        return 42;
+      }
+    }
+
+  }
+
+  namespace test_selection_statement_with_initializer
+  {
+
+    int f()
+    {
+      return 13;
+    }
+
+    int f2()
+    {
+      if (auto i = f(); i > 0)
+      {
+        return 3;
+      }
+
+      switch (auto i = f(); i + 4)
+      {
+      case 17:
+        return 2;
+
+      default:
+        return 1;
+      }
+    }
+
+  }
+
+  namespace test_template_argument_deduction_for_class_templates
+  {
+
+    template <typename T1, typename T2>
+    struct pair
+    {
+      pair (T1 p1, T2 p2)
+        : m1 {p1},
+          m2 {p2}
+      {}
+
+      T1 m1;
+      T2 m2;
+    };
+
+    void f()
+    {
+      [[maybe_unused]] auto p = pair{13, 42u};
+    }
+
+  }
+
+  namespace test_non_type_auto_template_parameters
+  {
+
+    template <auto n>
+    struct B
+    {};
+
+    B<5> b1;
+    B<'a'> b2;
+
+  }
+
+  namespace test_structured_bindings
+  {
+
+    int arr[2] = { 1, 2 };
+    std::pair<int, int> pr = { 1, 2 };
+
+    auto f1() -> int(&)[2]
+    {
+      return arr;
+    }
+
+    auto f2() -> std::pair<int, int>&
+    {
+      return pr;
+    }
+
+    struct S
+    {
+      int x1 : 2;
+      volatile double y1;
+    };
+
+    S f3()
+    {
+      return {};
+    }
+
+    auto [ x1, y1 ] = f1();
+    auto& [ xr1, yr1 ] = f1();
+    auto [ x2, y2 ] = f2();
+    auto& [ xr2, yr2 ] = f2();
+    const auto [ x3, y3 ] = f3();
+
+  }
+
+  namespace test_exception_spec_type_system
+  {
+
+    struct Good {};
+    struct Bad {};
+
+    void g1() noexcept;
+    void g2();
+
+    template<typename T>
+    Bad
+    f(T*, T*);
+
+    template<typename T1, typename T2>
+    Good
+    f(T1*, T2*);
+
+    static_assert (std::is_same_v<Good, decltype(f(g1, g2))>);
+
+  }
+
+  namespace test_inline_variables
+  {
+
+    template<class T> void f(T)
+    {}
+
+    template<class T> inline T g(T)
+    {
+      return T{};
+    }
+
+    template<> inline void f<>(int)
+    {}
+
+    template<> int g<>(int)
+    {
+      return 5;
+    }
+
+  }
+
+}  // namespace cxx17
+
+#endif  // __cplusplus < 201703L
+
+]])

ax_init_standard_project.m4

@@ -170,9 +170,11 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
   AX_SUBST(NUMBERS)
   AX_SUBST(HOME)
   if test -f README.md; then
+    README_FILE=README.md
     README=$(tail -n +3 README.md)
     DESCRIPTION=$(head -1 README.md | sed 's,^#\+ *,,;s, *#\+$,,')
   else
+    README_FILE=README
     README=$(tail -n +3 README)
     DESCRIPTION=$(head -1 README)
   fi
@@ -182,6 +184,7 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
   else
     README_HTML="${README}"
   fi
+  AX_SUBST(README_FILE)
   AX_SUBST(README)
   _AM_SUBST_NOTMAKE([README])
   AX_SUBST(README_ESCAPED)
@@ -329,7 +332,7 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
   AX_ADD_MAKEFILE_TARGET_DEP([maintainer-clean-am], [maintainer-clean-standard-project-targets], [makefile.in])
   test -f makefile.in && cat >> makefile.in <<EOF
 #### Begin: Appended by $0
-EXTRA_DIST += bootstrap.sh ax_init_standard_project.m4 ax_cxx_compile_stdcxx_11.m4 \
+EXTRA_DIST += bootstrap.sh ax_init_standard_project.m4 ax_cxx_compile_stdcxx.m4 \
               ax_check_qt.m4 resolve-debbuilddeps.sh resolve-rpmbuilddeps.sh \
               build-resource-file.sh mac-create-app-bundle.sh
 
@@ -347,9 +350,9 @@ EOF
 
 # use this in configure.ac to support C++
 AC_DEFUN([AX_USE_CXX], [
-  m4_include(ax_cxx_compile_stdcxx_11.m4)
+  m4_include(ax_cxx_compile_stdcxx.m4)
   AC_LANG(C++)
-  AX_CXX_COMPILE_STDCXX_14(noext, optional)
+  AX_CXX_COMPILE_STDCXX([17], [noext], [optional])
   AC_PROG_CXX
   AC_PROG_CPP
 
@@ -362,7 +365,7 @@ AC_DEFUN([AX_USE_CXX], [
   CXXFLAGS="${CXXFLAGS//-g -O2/}"
   CFLAGS="${CFLAGS//-g -O2/}"
 
-# pass compile flags to make distcheck
+  # pass compile flags to make distcheck
   AM_DISTCHECK_CONFIGURE_FLAGS="CXXFLAGS='${CXXFLAGS}' CPPFLAGS='${CPPFLAGS}' CFLAGS='${CFLAGS}' LDFLAGS='${LDFLAGS}'"
   AC_SUBST(AM_DISTCHECK_CONFIGURE_FLAGS)
 
@@ -388,6 +391,20 @@ maintainer-clean-cxx-targets:
 EOF
 ])
 
+# require specific C++ version
+AC_DEFUN([AX_USE_CXX_11], [
+  AX_USE_CXX
+  AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
+])
+AC_DEFUN([AX_USE_CXX_14], [
+  AX_USE_CXX
+  AX_CXX_COMPILE_STDCXX([14], [noext], [mandatory])
+])
+AC_DEFUN([AX_USE_CXX_17], [
+  AX_USE_CXX
+  AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory])
+])
+
 # use this in configure.ac to support old school C
 AC_DEFUN([AX_USE_C], [
   AC_LANG(C)
@@ -634,7 +651,6 @@ AC_DEFUN([AX_USE_DOXYGEN], [
   AC_CHECK_PROG(have_doxygen, doxygen, yes, no)
   AC_CHECK_PROG(have_dot, dot, yes, no)
   AC_CHECK_PROG(have_mscgen, mscgen, yes, no)
-  AM_CONDITIONAL(NEED_PLANTUML, test "$have_doxygen" = "yes" -a "1.8.11" != $((echo "1.8.11"; doxygen -v 2>/dev/null) | sort -V | head -1))
   PDF_DOC=${PACKAGE_NAME}-${PACKAGE_VERSION}.pdf
   AC_SUBST(PDF_DOC)
   if test "$have_doxygen" = "no"; then
@@ -659,28 +675,12 @@ AC_DEFUN([AX_USE_DOXYGEN], [
   AX_ADD_MAKEFILE_TARGET_DEP([.PHONY], [pdf gen-uml-images], [doc/makefile.in])
   test -f doc/makefile.in && cat >> doc/makefile.in <<EOF
 #### Begin: Appended by $0
-doc: doxyfile @NEED_PLANTUML_TRUE@ gen-uml-images
+doc: doxyfile
-	@NEED_PLANTUML_TRUE@ doxyadd() { grep -q "\$\$[1] += \$\$[2]" doxyfile || sed -i '/^'"\$\$[1]"' *=/a'"\$\$[1]"' += '"\$\$[2]" doxyfile; }; \\
-	@NEED_PLANTUML_TRUE@ doxyadd ALIASES '"startuml{1}=@image html \\\\1\\\\n@image latex \\\\1\\\\n\\\\if DontIgnorePlantUMLCode"'; \\
-	@NEED_PLANTUML_TRUE@ doxyadd ALIASES '"enduml=\\\\endif"'; \\
-	@NEED_PLANTUML_TRUE@ doxyadd IMAGE_PATH '"gen-uml-images"';
 	doxygen doxyfile
 @PEDANTIC_TRUE@	test \! -s doxygen.errors
 
-@NEED_PLANTUML_TRUE@EXTRA_DIST = ${EXTRA_DIST} plantuml.jar
-@NEED_PLANTUML_TRUE@
-@NEED_PLANTUML_TRUE@gen-uml-images:
-@NEED_PLANTUML_TRUE@	test -d gen-uml-images || mkdir gen-uml-images
-@NEED_PLANTUML_TRUE@	eval \$\$(sed -n 's, *INPUT *\\(+\\?\\)= *\\(.*\\),INPUT\\1=" \\2",gp' doxyfile); \\
-@NEED_PLANTUML_TRUE@	eval \$\$(sed -n 's, *FILE_PATTERNS *\\(+\\?\\)= *\\(.*\\),FILE_PATTERNS\\1=" \\2",gp' doxyfile); \\
-@NEED_PLANTUML_TRUE@	SOURCES="**.("\$\$(echo \$\${FILE_PATTERNS} | sed 's,*.,,g;s, ,|,g')")"; \\
-@NEED_PLANTUML_TRUE@	for src in \$\$INPUT; do \\
-@NEED_PLANTUML_TRUE@	  java  -Djava.awt.headless=true -jar \${top_srcdir}/doc/plantuml.jar -v -o \$\$(pwd)/gen-uml-images "\$\$src/\$\$SOURCES"; \\
-@NEED_PLANTUML_TRUE@	done
-
 clean-documentation:
 	-rm doxygen.errors @PDF_DOC@
-	@NEED_PLANTUML_TRUE@ -rm -rf gen-uml-images
 distclean-documentation:
 	-rm -r html
 	-rm  @PACKAGE_NAME@.doxytag
@@ -962,8 +962,8 @@ AC_DEFUN([AX_PKG_CHECK], [
 #    $2 = pathes to search for
 AC_DEFUN([AX_REQUIRE_HEADER], [
   AC_CHECK_HEADER($1, [], [
-    if test -n "$2"; then
     found=0
+    if test -n "$2"; then
       for d in $2; do
         if test -f "${d}/$1"; then
           AC_MSG_NOTICE([found file ${d}/$1])

bootstrap.sh

@@ -129,9 +129,8 @@ GENERATED FILES
     * ${MY_NAME}
     * autogen.sh - just the basics to initialize auto tools and create configure
     * ax_init_standard_project.m4 - auxiliary macro definition file
-    * ax_cxx_compile_stdcxx_11.m4 - auxiliary macro definition file
+    * ax_cxx_compile_stdcxx.m4 - auxiliary macro definition file
     * ax_check_qt.m4 - auxiliary macro definition file
-    * makefile_test.inc.am - makefile to be included in tests
     * resolve-debbuilddeps.sh - script to install debian package dependencies
     * resolve-rpmbuilddeps.sh - script to install RPM package dependencies
     * build-in-docker.sh - script to build the project encapsulated in a docker container
@@ -274,7 +273,7 @@ FILES
       * Enable C++ testing using CppUnit: AX_USE_CPPUNIT
       * Enable other tests: AX_BUILD_TEST
       * Enable C++ examples, i.e. for libraries: AX_BUILD_EXAMPLES
-      * Check for C++11 support: AX_CXX_COMPILE_STDCXX_11 (see ax_cxx_compile_stdcxx_11.m4)
+      * Require C++17 support: AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory]) (see ax_cxx_compile_stdcxx.m4)
       * Require a QT module: AX_REQUIRE_QT (see ax_check_qt.m4)
       * Optionally use a QT module: AX_CHECK_QT  (see ax_check_qt.m4)
       * Require a module: AX_PKG_REQUIRE (see ax_init_standard_project.m4)
@@ -450,7 +449,7 @@ checkdir() {
     if ! test -d "$1"; then # create path
         run mkdir -p "$1"
         if test -n "${VCS}" -a $novcs -eq 0 && ! contains "$1" "${excludevcs[@]}"; then
-            run ${VCS} add "$1"
+            run --no-check ${VCS} add "$1"
         fi
     fi
 }
@@ -498,7 +497,7 @@ to() {
     run chmod $mode $1
     if test $exists -eq 0; then
         if test -n "${VCS}" -a $novcs -eq 0 && ! contains "$1" "${excludevcs[@]}"; then
-            run ${VCS} add "$1"
+            run --no-check ${VCS} add "$1"
             if test "${VCS}" = "svn"; then
                 run svn propset svn:keywords "Id" "$1"
             fi
@@ -523,10 +522,14 @@ copy() {
     if test "${1%/*}" != "$1"; then
         test -d "${1%/*}" || svn mkdir "${1%/*}"
     fi
+    if ! test -e "${source}"; then
+        ignored "$1" not found
+        return
+    fi
     run cp "${source}" "$1"
     if test $exists -eq 0; then
         if test -n "${VCS}" -a $novcs -eq 0 && ! contains "$1" "${excludevcs[@]}"; then
-            run ${VCS} add "$1"
+            run --no-check ${VCS} add "$1"
             if test "${VCS}" = "svn"; then
                 run svn propset svn:keywords "Id" "$1"
             fi
@@ -575,7 +578,7 @@ vcs2cl() {
     fi
     if test $exists -eq 0; then
         if test -n "${VCS}" -a $novcs -eq 0 && ! contains "ChangeLog" "${excludevcs[@]}"; then
-            run ${VCS} add ChangeLog
+            run --no-check ${VCS} add ChangeLog
         fi
     fi
 }
@@ -591,9 +594,8 @@ fi
 # Initialize the environment:
 copy ${MY_NAME}
 copy ax_init_standard_project.m4
-copy ax_cxx_compile_stdcxx_11.m4
+copy ax_cxx_compile_stdcxx.m4
 copy ax_check_qt.m4
-copy makefile_test.inc.am
 copy resolve-debbuilddeps.sh
 copy resolve-rpmbuilddeps.sh
 copy build-in-docker.sh
@@ -1505,9 +1507,10 @@ if testtag AX_USE_DOXYGEN; then
     if ! checkfile doc/doxyfile.in || \
         contains doc/doxyfile.in "${rebuildfiles[@]}"; then
         run doxygen -g doc/doxyfile.in
+        sed -i ':a;/\\$/{s///;N;s/ *\n */ /g;ba}' doc/doxyfile.in
         if test $exists -eq 0; then
             if test -n "${VCS}" -a $novcs -eq 0 && ! contains "doc/doxyfile" "${excludevcs[@]}"; then
-                run ${VCS} add doc/doxyfile.in
+                run --no-check ${VCS} add doc/doxyfile.in
                 if test "${VCS}" = "svn"; then
                     run svn propset svn:keywords "Id" doc/doxyfile.in
                 fi
@@ -1548,6 +1551,7 @@ if testtag AX_USE_DOXYGEN; then
         doxyreplace WARN_IF_UNDOCUMENTED NO
         doxyreplace WARN_LOGFILE doxygen.errors
         doxyreplace INPUT "@top_srcdir@/src"
+        doxyadd INPUT "@top_srcdir@/@README_FILE@"
         if testtag AX_USE_SCRIPTS; then
             doxyadd INPUT "@top_srcdir@/scripts"
         fi
@@ -1562,6 +1566,7 @@ if testtag AX_USE_DOXYGEN; then
             doxyadd EXCLUDE "@top_srcdir@/nodejs/node_modules"
 	    doxyadd EXCLUDE "@top_srcdir@/nodejs/public/javascripts/ext"
         fi
+        doxyreplace USE_MDFILE_AS_MAINPAGE "@top_srcdir@/@README_FILE@"
         doxyreplace FILE_PATTERNS '*.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.idl *.ddl *.odl *.h *.hh *.hxx *.hpp *.h++ *.cs *.d *.php *.php4 *.php5 *.phtml *.inc *.m *.markdown *.md *.mm *.dox *.py *.f90 *.f *.for *.tcl *.vhd *.vhdl *.ucf *.qsf *.as *.js *.wt *.sql'
         doxyreplace RECURSIVE YES
         doxyreplace EXCLUDE_PATTERNS "moc_* uic_* qrc_* version.[ch]xx"
@@ -1571,9 +1576,7 @@ if testtag AX_USE_DOXYGEN; then
         doxyreplace HTML_DYNAMIC_SECTIONS YES
         doxyreplace DISABLE_INDEX NO
         doxyreplace GENERATE_TREEVIEW YES 
-        if testtag AX_BUILD_EXAMPLES; then
+        doxyreplace EXAMPLE_PATH @top_srcdir@
-            doxyreplace EXAMPLE_PATH @top_srcdir@/examples
-        fi
         doxyreplace EXAMPLE_RECURSIVE YES
         doxyreplace FILTER_PATTERNS '*.wt=doxygen-webtester.sed *.sql=@top_srcdir@/sql-to-dot.sed'
         doxyreplace SOURCE_BROWSER YES
@@ -1874,7 +1877,7 @@ desktop_DATA = @PACKAGE_DESKTOP@
 dist_pkgdata_DATA = @PACKAGE_ICON@
 dist_noinst_DATA = ax_check_qt.m4 bootstrap.sh				\\
                    resolve-rpmbuilddeps.sh autogen.sh			\\
-                    ax_cxx_compile_stdcxx_11.m4 build-in-docker.sh	\\
+                    ax_cxx_compile_stdcxx.m4 build-in-docker.sh	        \\
                     build-resource-file.sh				\\
                     ax_init_standard_project.m4				\\
                     mac-create-app-bundle.sh resolve-debbuilddeps.sh    \\

build-in-docker.sh

@@ -7,7 +7,7 @@ if test "${arch}" = "amd64"; then
     myarch="amd64|i386"
 fi
 mode=
-img="mwaeckerlin/ubuntu:latest"
+img=
 repos=()
 keys=()
 dns=()
@@ -20,6 +20,10 @@ arch=$((which dpkg > /dev/null 2> /dev/null && dpkg --print-architecture) || ech
 host=
 flags=()
 wait=0
+commit=
+nopull=0
+prepare=0
+clean=
 if test -e ./build-in-docker.conf; then
     # you can preconfigure the variables in file build-in-docker.conf
     # if you do so, add the file to EXTRA_DIST in makefile.am
@@ -28,68 +32,111 @@ fi
 
 while test $# -gt 0; do
     case "$1" in
-        (-h|--help)
+        (-h|--help) cat <<EOF
-            echo "$0 [OPTIONS]"
+SYNOPSIS
-            echo
+
-            echo "OPTIONS:"
+  $0 [OPTIONS]
-            echo
+
-            echo "  -h, --help            show this help"
+OPTIONS
-            echo "  -m, --mode <type>     mode: deb, rpm, win, default: ${mode}"
+
-            echo "  -i, --image <image>   use given docker image instead of ${img}"
+  -h, --help            show this help
-            echo "  -a, --arch <arch>     build for given hardware architecture"
+  -m, --mode <type>     mode: deb, rpm, win, default: ${mode}
-            echo "  -t, --targets targets specify build targets, default: ${targets}"
+  -i, --image <image>   use given docker image instead of ${img}
-            echo "  --host <target-arch>  host for cross compiling, e.g. i686-w64-mingw32"
+  -a, --arch <arch>     build for given hardware architecture
-            echo "  -f, --flag <flag>     add flag to ./bootstrap.sh or ./configure"
+  -t, --targets targets specify build targets, default: ${targets}
-            echo "  -r, --repo <url>      add given apt repository"
+  --host <target-arch>  host for cross compiling, e.g. i686-w64-mingw32
-            echo "  -k, --key <url>       add public key from url"
+  -f, --flag <flag>     add flag to ./bootstrap.sh or ./configure
-            echo "  -n, --dns <ip>        add ip as dns server"
+  -r, --repo <url>      add given apt repository
-            echo "  -e, --env <var>=<val> set environment variable in docker"
+  -k, --key <url>       add public key from url
-            echo "  -d, --dir <dir>       access given directory read only"
+  -n, --dns <ip>        add ip as dns server
-            echo "  -p, --package <pkg>   install extra debian packages"
+  -e, --env <var>=<val> set environment variable in docker
-            echo "  -c, --cmd <command>   execute commands as root in docker"
+  -d, --dir <dir>       access given directory read only
-            echo "  -w, --wait            on error keep docker container and wait for enter"
+  -p, --package <pkg>   install extra debian packages
-            echo
+  -c, --cmd <command>   execute commands as root in docker
-            echo "  The option -i must be after -m, because mode sets a new default image"
+  -w, --wait            on error keep docker container and wait for enter
-            echo "  The option -m must be after -t, because mode may be auto detected from targets"
+  --clean               run maintainer-clean before build
-            echo "  The option -m must be after -h, because mode may set a host"
+  --commit <image>      commit the container as image after setup, then exit
-            echo "  If target is either deb or rpm, mode is set to the same value"
+  --no-pull             do not pull image before start (use local image)
-            echo "  If target is win, host is set to i686-w64-mingw32"
+  --prepare             only prepare the image, then wait
-            echo
+
-            echo "  The options -r -k -e -d -p -c can be repeated several times."
+  The option -i must be after -m, because mode sets a new default image
-            echo
+  The option -m must be after -t, because mode may be auto detected from targets
-            echo "  The options -r -p -c allow an if-then-else contruct"
+  The option -m must be after -h, because mode may set a host
-            echo "  depending on the operating system:"
+  If target is either deb or rpm, mode is set to the same value
-            echo "    <os>:::<A>:::<B>"
+  If target is win, host is set to i686-w64-mingw32
-            echo "    <os>:::<A>"
+
-            echo "  Read as: On linux type <os> use <A> else use <B>"
+  The options -r -k -e -d -p -c can be repeated several times.
-            echo "  That means: If the distributer ID or codename in lsb_release"
+
-            echo "  matches regular expression <os>, then <A> is replaced, else <B> is replaced."
+  The options -r -p -c allow an if-then-else contruct
-            echo "  The three colons are for splitting <os> from <A> and <B> part."
+  depending on the operating system:
-            echo "  E.g.: Install package curl on wheezy and npm on olter systems:"
+    <os>:::<A>:::<B>
-            echo "    $0 -p Debian|precise:::curl:::npm"
+    <os>:::<A>
-            echo
+  Read as: On linux type <os> use <A> else use <B>
-            echo "EXAMPLE:"
+  That means: If the distributer ID or codename in lsb_release
-            echo
+  matches regular expression <os>, then <A> is replaced, else <B> is replaced.
-            echo "$0 -i mwaeckerlin/ubuntu:trusty-i386 \\"
+  The three colons are for splitting <os> from <A> and <B> part.
-            echo "                     -t deb \\"
+  E.g.: Install package curl on wheezy and npm on olter systems:
-            echo "                     -e ANDROID_HOME=/opt/local/android \\"
+    $0 -p Debian|precise:::curl:::npm
-            echo "                     -d /opt/local/android \\"
+
-            echo "                     -r universe \\"
+PERFORMANCE
-            echo "                     -r https://repository.mrw.sh \\"
+
-            echo "                     -k https://repository.mrw.sh/PublicKey \\"
+  Each build starts with an empty image and first installs all
-            echo "                     -p mrw-c++"
+  dependencies. You can speed up the build process by using an image,
-            echo
+  where all dependencies are already installed. The disadvantage of
+  this approach is, that missing dependencies are not detected, so
+  installing all dependencies into an empty image is a test for the
+  dependency specification.
+
+  Create an image from ubuntu:trusty that contains all dependencies:
+
+    $0 -i ubuntu:trusty --tag my/trusty
+
+  Now you can use the image my/trusty, but since it is not stored in a
+  repository, you have to either push it to a repository (here my is
+  your name in docker hub), or simply use it local only and add the
+  flag --no-pull:
+
+    $0 -i my/trusty -t all
+
+  As long as you work with my/trusty, the dependencies don't need to
+  be donwloaded in each build.
+
+TESTING
+
+  When you want to experiment with your builds, i.e. to trace a build
+  problem, then option --prepare comes handy. It just starts an image
+  with all dependencies, then waits and gives you information on how
+  you can enter the image for manual tests in a temporary
+  container. As soon as you hit the enter key, it cleans up the
+  temporary container.
+
+    $0 -i ubuntu:trusty --prepare
+
+EXAMPLE
+
+  $0 -i mwaeckerlin/ubuntu:trusty-i386 \\
+                     -t deb \\
+                     -e ANDROID_HOME=/opt/local/android \\
+                     -d /opt/local/android \\
+                     -r universe \\
+                     -r https://repository.mrw.sh \\
+                     -k https://repository.mrw.sh/PublicKey \\
+                     -p mrw-c++
+
+EOF
             exit 0
             ;;
-        (-m|--mode) shift;
+        (-m|--mode)
+            shift;
             mode="$1"
+            if test -z "$img"; then
                 case "$mode" in
-                (deb|apt) img="mwaeckerlin/ubuntu:latest";;
+                    (deb|apt) img="mwaeckerlin/debbuildenv";;
                     (rpm|zypper) img="opensuse:latest";;
                     (yum) img="centos:latest";;
                     (dnf) img="fedora:latest";;
                     (win)
-                    img="mwaeckerlin/ubuntu:latest"; host="${host:---host=i686-w64-mingw32}"
+                        img="mwaeckerlin/debbuildenv"; host="${host:---host=i686-w64-mingw32}"
                         targets="all install"
                         flags+=("--prefix=/workdir/usr")
                         packages+=("mingw-w64")
@@ -99,6 +146,7 @@ while test $# -gt 0; do
                         exit 1
                         ;;
                 esac
+            fi
             ;;
         (-i|--image) shift;
             img="$1"
@@ -145,6 +193,18 @@ while test $# -gt 0; do
         (-w|--wait)
             wait=1
             ;;
+        (--clean)
+            clean="--clean -c"
+            ;;
+        (--commit) shift;
+            commit="$1"
+            ;;
+        (--no-pull)
+            nopull=1
+            ;;
+        (--prepare)
+            prepare=1
+            ;;
         (*)
             echo "**** ERROR: unknown option '$1', try --help" 1>&2
             exit 1
@@ -157,6 +217,15 @@ while test $# -gt 0; do
     shift
 done
 
+function waitforinput() {
+    set +x
+    echo "  ... now you can access the docker container as root or user:"
+    echo "      docker exec -it ${DOCKER_ID} bash"
+    echo "      docker exec -u $(id -u) -it ${DOCKER_ID} bash"
+    echo -n "  ... press enter to cleanup: "
+    read
+}
+
 function traperror() {
     set +x
     local DOCKER_ID="$1"
@@ -177,11 +246,7 @@ function traperror() {
                 echo
             fi
             if [ "$wait" -eq 1 ]; then
-                echo "  ... now you can access the docker container as root or user:"
+                waitforinput
-                echo "      docker exec -it ${DOCKER_ID} bash"
-                echo "      docker exec -u $(id -u) -it ${DOCKER_ID} bash"
-                echo -n "  ... press enter to cleanup: "
-                read
             fi
             echo -n "   ... cleanup docker: "
             docker stop "${DOCKER_ID}" || true
@@ -243,7 +308,10 @@ function ifthenelse() {
 
 set -x
 
-docker pull $img
+if test -z "$img"; then
+    img="mwaeckerlin/debbuildenv"
+fi
+test $nopull -eq 1 || docker pull $img
 DOCKER_ID=$(docker create ${dns[@]} ${dirs[@]} ${envs[@]} -w /workdir $img sleep infinity)
 trap 'traperror '"${DOCKER_ID}"' "$? ${PIPESTATUS[@]}" $LINENO $BASH_LINENO "$BASH_COMMAND" "${FUNCNAME[@]}" "${FUNCTION}"' SIGINT INT TERM EXIT
 if ! [[ $arch =~ $myarch ]]; then
@@ -262,8 +330,8 @@ if test -z "$mode"; then
         (*deb*) mode=deb;;
         (*rpm*) mode=rpm;;
         (*) case "$img" in
-                (*ubuntu*|*debian*|*mint*) mode=deb;;
+                (*deb*|*ubuntu*|*debian*|*mint*) mode=deb;;
-                (*fedora*|*centos*|*mageia*) mode=rpm;;
+                (*rpm*|*fedora*|*centos*|*mageia*) mode=rpm;;
                 (*mingw*|*win*) mode=win;;
                 (*) mode=deb;;
             esac;;
@@ -272,25 +340,18 @@ fi
 case "$mode" in
     (deb|apt|win)
         OPTIONS='-o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confnew -y --force-yes --no-install-suggests --no-install-recommends'
-        PREVENT='libpam-systemd policykit.* colord dconf-service'
         docker exec ${DOCKER_ID} apt-get update ${OPTIONS}
-        docker exec ${DOCKER_ID} apt-mark hold ${PREVENT}
         #docker exec ${DOCKER_ID} apt-get upgrade ${OPTIONS}
-        docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- python-software-properties software-properties-common apt-transport-https dpkg-dev lsb-release wget || \
+        docker exec ${DOCKER_ID} apt-get install ${OPTIONS} python-software-properties software-properties-common apt-transport-https dpkg-dev lsb-release wget || \
-            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- software-properties-common apt-transport-https dpkg-dev lsb-release wget || \
+            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} software-properties-common apt-transport-https dpkg-dev lsb-release wget || \
-            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- python-software-properties apt-transport-https dpkg-dev lsb-release wget;
+            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} python-software-properties apt-transport-https dpkg-dev lsb-release wget;
         if [[ "${img}" =~ "ubuntu" ]]; then
-            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- locales
+            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} locales
             docker exec ${DOCKER_ID} locale-gen ${LANG}
             docker exec ${DOCKER_ID} update-locale LANG=${LANG}
         fi
-        for f in ${PREVENT}; do
+        if test -n "${keys[*]}"; then # fix dependency bug in cosmic and stretch
-            docker exec ${DOCKER_ID} bash -c "echo 'Package: ${f}' >> /etc/apt/preferences"
+            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} gnupg
-            docker exec ${DOCKER_ID} bash -c "echo 'Pin-Priority: -100' >> /etc/apt/preferences"
-            docker exec ${DOCKER_ID} bash -c "echo >> /etc/apt/preferences"
-        done
-        if test -n "${keys[@]}"; then # fix dependency bug in cosmic and stretch
-            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- gnupg
             for key in "${keys[@]}"; do
                 wget -O- "$key" \
                     | docker exec -i ${DOCKER_ID} apt-key add -
@@ -302,7 +363,7 @@ case "$mode" in
 
         docker exec ${DOCKER_ID} apt-get update ${OPTIONS}
         for package in "${packages[@]}"; do
-            ifthenelse "${package}" "apt-get install ${OPTIONS} ${PREVENT// /- }- ARG"
+            ifthenelse "${package}" "apt-get install ${OPTIONS} ARG"
         done
         for command in "${commands[@]}"; do
             ifthenelse "${command}" "ARG"
@@ -357,13 +418,24 @@ for f in "${flags[@]}"; do
     FLAGS+=($(ifthenelse "$f" "echo 'ARG'"))
 done
 
-docker exec -u $(id -u):$(id -g) ${DOCKER_ID} ./bootstrap.sh -t "${targets}" ${host} "${FLAGS[@]}"
+if test -n "$commit"; then
+    docker commit ${DOCKER_ID} "$commit"
+    echo "commited new image: $commit"
+    exit 0
+fi
+          
+if test $prepare -eq 1; then
+    waitforinput
+    exit 0
+fi
+          
+docker exec -u $(id -u):$(id -g) ${DOCKER_ID} ./bootstrap.sh ${clean} -t "${targets}" ${host} "${FLAGS[@]}"
 
 # last check: try to install built deb or rpm files (if not already cleaned up)
 # not supported in trusty and jessie
 if test "$mode" = deb -a "${img//trusty/}" = "${img}" -a "${img//jessie/}" = "${img}"; then
    if test "${targets//deb/}" != "${targets}" && ls *.deb > /dev/null 2> /dev/null; then
-       docker exec ${DOCKER_ID} bash -c "apt-get install ${OPTIONS} ${PREVENT// /- }- /workdir/*.deb"
+       docker exec ${DOCKER_ID} bash -c "apt-get install ${OPTIONS} /workdir/*.deb"
    fi
 fi
 if test "$mode" = rpm -a "${targets//rpm/}" != "${targets}"; then

scripts/ax_cxx_compile_stdcxx.m4

@@ -0,0 +1,948 @@
+# ===========================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the specified
+#   version of the C++ standard.  If necessary, add switches to CXX and
+#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
+#   or '14' (for the C++14 standard).
+#
+#   The second argument, if specified, indicates whether you insist on an
+#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
+#   -std=c++11).  If neither is specified, you get whatever works, with
+#   preference for an extended mode.
+#
+#   The third argument, if specified 'mandatory' or if left unspecified,
+#   indicates that baseline support for the specified C++ standard is
+#   required and that the macro should error out if no mode with that
+#   support is found.  If specified 'optional', then configuration proceeds
+#   regardless, after defining HAVE_CXX${VERSION} if and only if a
+#   supporting mode is found.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
+#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
+#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
+#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
+#   Copyright (c) 2015 Paul Norman <penorman@mac.com>
+#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
+#   Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 10
+
+dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
+dnl  (serial version number 13).
+
+AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
+  m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"],
+        [$1], [14], [ax_cxx_compile_alternatives="14 1y"],
+        [$1], [17], [ax_cxx_compile_alternatives="17 1z"],
+        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$2], [], [],
+        [$2], [ext], [],
+        [$2], [noext], [],
+        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
+        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
+  AC_LANG_PUSH([C++])dnl
+  ac_success=no
+
+  m4_if([$2], [noext], [], [dnl
+  if test x$ac_success = xno; then
+    for alternative in ${ax_cxx_compile_alternatives}; do
+      switch="-std=gnu++${alternative}"
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+
+  m4_if([$2], [ext], [], [dnl
+  if test x$ac_success = xno; then
+    dnl HP's aCC needs +std=c++11 according to:
+    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
+    dnl Cray's crayCC needs "-h std=c++11"
+    for alternative in ${ax_cxx_compile_alternatives}; do
+      for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do
+        cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+        AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                       $cachevar,
+          [ac_save_CXX="$CXX"
+           CXX="$CXX $switch"
+           AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+            [eval $cachevar=yes],
+            [eval $cachevar=no])
+           CXX="$ac_save_CXX"])
+        if eval test x\$$cachevar = xyes; then
+          CXX="$CXX $switch"
+          if test -n "$CXXCPP" ; then
+            CXXCPP="$CXXCPP $switch"
+          fi
+          ac_success=yes
+          break
+        fi
+      done
+      if test x$ac_success = xyes; then
+        break
+      fi
+    done
+  fi])
+  AC_LANG_POP([C++])
+  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
+    if test x$ac_success = xno; then
+      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
+    fi
+  fi
+  if test x$ac_success = xno; then
+    HAVE_CXX$1=0
+    AC_MSG_NOTICE([No compiler with C++$1 support was found])
+  else
+    HAVE_CXX$1=1
+    AC_DEFINE(HAVE_CXX$1,1,
+              [define if the compiler supports basic C++$1 syntax])
+  fi
+  AC_SUBST(HAVE_CXX$1)
+])
+
+
+dnl  Test body for checking C++11 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+)
+
+
+dnl  Test body for checking C++14 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+)
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_17],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_17
+)
+
+dnl  Tests for new features in C++11
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+  namespace test_static_assert
+  {
+
+    template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+  }
+
+  namespace test_final_override
+  {
+
+    struct Base
+    {
+      virtual void f() {}
+    };
+
+    struct Derived : public Base
+    {
+      virtual void f() override {}
+    };
+
+  }
+
+  namespace test_double_right_angle_brackets
+  {
+
+    template < typename T >
+    struct check {};
+
+    typedef check<void> single_type;
+    typedef check<check<void>> double_type;
+    typedef check<check<check<void>>> triple_type;
+    typedef check<check<check<check<void>>>> quadruple_type;
+
+  }
+
+  namespace test_decltype
+  {
+
+    int
+    f()
+    {
+      int a = 1;
+      decltype(a) b = 2;
+      return a + b;
+    }
+
+  }
+
+  namespace test_type_deduction
+  {
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static const bool value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static const bool value = true;
+    };
+
+    template < typename T1, typename T2 >
+    auto
+    add(T1 a1, T2 a2) -> decltype(a1 + a2)
+    {
+      return a1 + a2;
+    }
+
+    int
+    test(const int c, volatile int v)
+    {
+      static_assert(is_same<int, decltype(0)>::value == true, "");
+      static_assert(is_same<int, decltype(c)>::value == false, "");
+      static_assert(is_same<int, decltype(v)>::value == false, "");
+      auto ac = c;
+      auto av = v;
+      auto sumi = ac + av + 'x';
+      auto sumf = ac + av + 1.0;
+      static_assert(is_same<int, decltype(ac)>::value == true, "");
+      static_assert(is_same<int, decltype(av)>::value == true, "");
+      static_assert(is_same<int, decltype(sumi)>::value == true, "");
+      static_assert(is_same<int, decltype(sumf)>::value == false, "");
+      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+      return (sumf > 0.0) ? sumi : add(c, v);
+    }
+
+  }
+
+  namespace test_noexcept
+  {
+
+    int f() { return 0; }
+    int g() noexcept { return 0; }
+
+    static_assert(noexcept(f()) == false, "");
+    static_assert(noexcept(g()) == true, "");
+
+  }
+
+  namespace test_constexpr
+  {
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+    {
+      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+    }
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c(const CharT *const s) noexcept
+    {
+      return strlen_c_r(s, 0UL);
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("1") == 1UL, "");
+    static_assert(strlen_c("example") == 7UL, "");
+    static_assert(strlen_c("another\0example") == 7UL, "");
+
+  }
+
+  namespace test_rvalue_references
+  {
+
+    template < int N >
+    struct answer
+    {
+      static constexpr int value = N;
+    };
+
+    answer<1> f(int&)       { return answer<1>(); }
+    answer<2> f(const int&) { return answer<2>(); }
+    answer<3> f(int&&)      { return answer<3>(); }
+
+    void
+    test()
+    {
+      int i = 0;
+      const int c = 0;
+      static_assert(decltype(f(i))::value == 1, "");
+      static_assert(decltype(f(c))::value == 2, "");
+      static_assert(decltype(f(0))::value == 3, "");
+    }
+
+  }
+
+  namespace test_uniform_initialization
+  {
+
+    struct test
+    {
+      static const int zero {};
+      static const int one {1};
+    };
+
+    static_assert(test::zero == 0, "");
+    static_assert(test::one == 1, "");
+
+  }
+
+  namespace test_lambdas
+  {
+
+    void
+    test1()
+    {
+      auto lambda1 = [](){};
+      auto lambda2 = lambda1;
+      lambda1();
+      lambda2();
+    }
+
+    int
+    test2()
+    {
+      auto a = [](int i, int j){ return i + j; }(1, 2);
+      auto b = []() -> int { return '0'; }();
+      auto c = [=](){ return a + b; }();
+      auto d = [&](){ return c; }();
+      auto e = [a, &b](int x) mutable {
+        const auto identity = [](int y){ return y; };
+        for (auto i = 0; i < a; ++i)
+          a += b--;
+        return x + identity(a + b);
+      }(0);
+      return a + b + c + d + e;
+    }
+
+    int
+    test3()
+    {
+      const auto nullary = [](){ return 0; };
+      const auto unary = [](int x){ return x; };
+      using nullary_t = decltype(nullary);
+      using unary_t = decltype(unary);
+      const auto higher1st = [](nullary_t f){ return f(); };
+      const auto higher2nd = [unary](nullary_t f1){
+        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+      };
+      return higher1st(nullary) + higher2nd(nullary)(unary);
+    }
+
+  }
+
+  namespace test_variadic_templates
+  {
+
+    template <int...>
+    struct sum;
+
+    template <int N0, int... N1toN>
+    struct sum<N0, N1toN...>
+    {
+      static constexpr auto value = N0 + sum<N1toN...>::value;
+    };
+
+    template <>
+    struct sum<>
+    {
+      static constexpr auto value = 0;
+    };
+
+    static_assert(sum<>::value == 0, "");
+    static_assert(sum<1>::value == 1, "");
+    static_assert(sum<23>::value == 23, "");
+    static_assert(sum<1, 2>::value == 3, "");
+    static_assert(sum<5, 5, 11>::value == 21, "");
+    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+  }
+
+  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+  // because of this.
+  namespace test_template_alias_sfinae
+  {
+
+    struct foo {};
+
+    template<typename T>
+    using member = typename T::member_type;
+
+    template<typename T>
+    void func(...) {}
+
+    template<typename T>
+    void func(member<T>*) {}
+
+    void test();
+
+    void test() { func<foo>(0); }
+
+  }
+
+}  // namespace cxx11
+
+#endif  // __cplusplus >= 201103L
+
+]])
+
+
+dnl  Tests for new features in C++14
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+  namespace test_polymorphic_lambdas
+  {
+
+    int
+    test()
+    {
+      const auto lambda = [](auto&&... args){
+        const auto istiny = [](auto x){
+          return (sizeof(x) == 1UL) ? 1 : 0;
+        };
+        const int aretiny[] = { istiny(args)... };
+        return aretiny[0];
+      };
+      return lambda(1, 1L, 1.0f, '1');
+    }
+
+  }
+
+  namespace test_binary_literals
+  {
+
+    constexpr auto ivii = 0b0000000000101010;
+    static_assert(ivii == 42, "wrong value");
+
+  }
+
+  namespace test_generalized_constexpr
+  {
+
+    template < typename CharT >
+    constexpr unsigned long
+    strlen_c(const CharT *const s) noexcept
+    {
+      auto length = 0UL;
+      for (auto p = s; *p; ++p)
+        ++length;
+      return length;
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("x") == 1UL, "");
+    static_assert(strlen_c("test") == 4UL, "");
+    static_assert(strlen_c("another\0test") == 7UL, "");
+
+  }
+
+  namespace test_lambda_init_capture
+  {
+
+    int
+    test()
+    {
+      auto x = 0;
+      const auto lambda1 = [a = x](int b){ return a + b; };
+      const auto lambda2 = [a = lambda1(x)](){ return a; };
+      return lambda2();
+    }
+
+  }
+
+  namespace test_digit_separators
+  {
+
+    constexpr auto ten_million = 100'000'000;
+    static_assert(ten_million == 100000000, "");
+
+  }
+
+  namespace test_return_type_deduction
+  {
+
+    auto f(int& x) { return x; }
+    decltype(auto) g(int& x) { return x; }
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static constexpr auto value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static constexpr auto value = true;
+    };
+
+    int
+    test()
+    {
+      auto x = 0;
+      static_assert(is_same<int, decltype(f(x))>::value, "");
+      static_assert(is_same<int&, decltype(g(x))>::value, "");
+      return x;
+    }
+
+  }
+
+}  // namespace cxx14
+
+#endif  // __cplusplus >= 201402L
+
+]])
+
+
+dnl  Tests for new features in C++17
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[
+
+// If the compiler admits that it is not ready for C++17, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201703L
+
+#error "This is not a C++17 compiler"
+
+#else
+
+#include <initializer_list>
+#include <utility>
+#include <type_traits>
+
+namespace cxx17
+{
+
+  namespace test_constexpr_lambdas
+  {
+
+    constexpr int foo = [](){return 42;}();
+
+  }
+
+  namespace test::nested_namespace::definitions
+  {
+
+  }
+
+  namespace test_fold_expression
+  {
+
+    template<typename... Args>
+    int multiply(Args... args)
+    {
+      return (args * ... * 1);
+    }
+
+    template<typename... Args>
+    bool all(Args... args)
+    {
+      return (args && ...);
+    }
+
+  }
+
+  namespace test_extended_static_assert
+  {
+
+    static_assert (true);
+
+  }
+
+  namespace test_auto_brace_init_list
+  {
+
+    auto foo = {5};
+    auto bar {5};
+
+    static_assert(std::is_same<std::initializer_list<int>, decltype(foo)>::value);
+    static_assert(std::is_same<int, decltype(bar)>::value);
+  }
+
+  namespace test_typename_in_template_template_parameter
+  {
+
+    template<template<typename> typename X> struct D;
+
+  }
+
+  namespace test_fallthrough_nodiscard_maybe_unused_attributes
+  {
+
+    int f1()
+    {
+      return 42;
+    }
+
+    [[nodiscard]] int f2()
+    {
+      [[maybe_unused]] auto unused = f1();
+
+      switch (f1())
+      {
+      case 17:
+        f1();
+        [[fallthrough]];
+      case 42:
+        f1();
+      }
+      return f1();
+    }
+
+  }
+
+  namespace test_extended_aggregate_initialization
+  {
+
+    struct base1
+    {
+      int b1, b2 = 42;
+    };
+
+    struct base2
+    {
+      base2() {
+        b3 = 42;
+      }
+      int b3;
+    };
+
+    struct derived : base1, base2
+    {
+        int d;
+    };
+
+    derived d1 {{1, 2}, {}, 4};  // full initialization
+    derived d2 {{}, {}, 4};      // value-initialized bases
+
+  }
+
+  namespace test_general_range_based_for_loop
+  {
+
+    struct iter
+    {
+      int i;
+
+      int& operator* ()
+      {
+        return i;
+      }
+
+      const int& operator* () const
+      {
+        return i;
+      }
+
+      iter& operator++()
+      {
+        ++i;
+        return *this;
+      }
+    };
+
+    struct sentinel
+    {
+      int i;
+    };
+
+    bool operator== (const iter& i, const sentinel& s)
+    {
+      return i.i == s.i;
+    }
+
+    bool operator!= (const iter& i, const sentinel& s)
+    {
+      return !(i == s);
+    }
+
+    struct range
+    {
+      iter begin() const
+      {
+        return {0};
+      }
+
+      sentinel end() const
+      {
+        return {5};
+      }
+    };
+
+    void f()
+    {
+      range r {};
+
+      for (auto i : r)
+      {
+        [[maybe_unused]] auto v = i;
+      }
+    }
+
+  }
+
+  namespace test_lambda_capture_asterisk_this_by_value
+  {
+
+    struct t
+    {
+      int i;
+      int foo()
+      {
+        return [*this]()
+        {
+          return i;
+        }();
+      }
+    };
+
+  }
+
+  namespace test_enum_class_construction
+  {
+
+    enum class byte : unsigned char
+    {};
+
+    byte foo {42};
+
+  }
+
+  namespace test_constexpr_if
+  {
+
+    template <bool cond>
+    int f ()
+    {
+      if constexpr(cond)
+      {
+        return 13;
+      }
+      else
+      {
+        return 42;
+      }
+    }
+
+  }
+
+  namespace test_selection_statement_with_initializer
+  {
+
+    int f()
+    {
+      return 13;
+    }
+
+    int f2()
+    {
+      if (auto i = f(); i > 0)
+      {
+        return 3;
+      }
+
+      switch (auto i = f(); i + 4)
+      {
+      case 17:
+        return 2;
+
+      default:
+        return 1;
+      }
+    }
+
+  }
+
+  namespace test_template_argument_deduction_for_class_templates
+  {
+
+    template <typename T1, typename T2>
+    struct pair
+    {
+      pair (T1 p1, T2 p2)
+        : m1 {p1},
+          m2 {p2}
+      {}
+
+      T1 m1;
+      T2 m2;
+    };
+
+    void f()
+    {
+      [[maybe_unused]] auto p = pair{13, 42u};
+    }
+
+  }
+
+  namespace test_non_type_auto_template_parameters
+  {
+
+    template <auto n>
+    struct B
+    {};
+
+    B<5> b1;
+    B<'a'> b2;
+
+  }
+
+  namespace test_structured_bindings
+  {
+
+    int arr[2] = { 1, 2 };
+    std::pair<int, int> pr = { 1, 2 };
+
+    auto f1() -> int(&)[2]
+    {
+      return arr;
+    }
+
+    auto f2() -> std::pair<int, int>&
+    {
+      return pr;
+    }
+
+    struct S
+    {
+      int x1 : 2;
+      volatile double y1;
+    };
+
+    S f3()
+    {
+      return {};
+    }
+
+    auto [ x1, y1 ] = f1();
+    auto& [ xr1, yr1 ] = f1();
+    auto [ x2, y2 ] = f2();
+    auto& [ xr2, yr2 ] = f2();
+    const auto [ x3, y3 ] = f3();
+
+  }
+
+  namespace test_exception_spec_type_system
+  {
+
+    struct Good {};
+    struct Bad {};
+
+    void g1() noexcept;
+    void g2();
+
+    template<typename T>
+    Bad
+    f(T*, T*);
+
+    template<typename T1, typename T2>
+    Good
+    f(T1*, T2*);
+
+    static_assert (std::is_same_v<Good, decltype(f(g1, g2))>);
+
+  }
+
+  namespace test_inline_variables
+  {
+
+    template<class T> void f(T)
+    {}
+
+    template<class T> inline T g(T)
+    {
+      return T{};
+    }
+
+    template<> inline void f<>(int)
+    {}
+
+    template<> int g<>(int)
+    {
+      return 5;
+    }
+
+  }
+
+}  // namespace cxx17
+
+#endif  // __cplusplus < 201703L
+
+]])

scripts/ax_cxx_compile_stdcxx_11.m4

@@ -1,231 +0,0 @@
-# ============================================================================
-#  http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html
-# ============================================================================
-#
-# SYNOPSIS
-#
-#   AX_REQUIRE_STDCXX_11
-#   AX_REQUIRE_STDCXX_14
-#   AX_CXX_COMPILE_STDCXX_11([ext|noext],[mandatory|optional])
-#   AX_CXX_COMPILE_STDCXX_14([ext|noext],[mandatory|optional])
-#
-# DESCRIPTION
-#
-#   Check for baseline language coverage in the compiler for the C++11
-#   or C++14 standard; if necessary, add switches to CXXFLAGS to
-#   enable support.
-#
-#   The first argument, if specified, indicates whether you insist on an
-#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
-#   -std=c++11).  If neither is specified, you get whatever works, with
-#   preference for an extended mode.
-#
-#   The second argument, if specified 'mandatory' or if left unspecified,
-#   indicates that baseline C++11 support is required and that the macro
-#   should error out if no mode with that support is found.  If specified
-#   'optional', then configuration proceeds regardless, after defining
-#   HAVE_CXX11 if and only if a supporting mode is found.
-#
-# LICENSE
-#
-#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
-#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
-#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
-#
-#   Copying and distribution of this file, with or without modification, are
-#   permitted in any medium without royalty provided the copyright notice
-#   and this notice are preserved. This file is offered as-is, without any
-#   warranty.
-
-#serial 3
-
-m4_define([_AX_CXX_COMPILE_STDCXX_11_testbody], [
-  template <typename T>
-    struct check
-    {
-      static_assert(sizeof(int) <= sizeof(T), "not big enough");
-    };
-
-    typedef check<check<bool>> right_angle_brackets;
-
-    int a;
-    decltype(a) b;
-
-    typedef check<int> check_type;
-    check_type c;
-    check_type&& cr = static_cast<check_type&&>(c);
-
-    auto d = a;
-])
-
-AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl
-  m4_if([$1], [], [],
-        [$1], [ext], [],
-        [$1], [noext], [],
-        [m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_11])])dnl
-  m4_if([$2], [], [ax_cxx_compile_cxx11_required=true],
-        [$2], [mandatory], [ax_cxx_compile_cxx11_required=true],
-        [$2], [optional], [ax_cxx_compile_cxx11_required=false],
-        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX_11])])dnl
-  AC_LANG_PUSH([C++])dnl
-  ac_success=no
-  AC_CACHE_CHECK(whether $CXX supports C++11 features by default,
-  ax_cv_cxx_compile_cxx11,
-  [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
-    [ax_cv_cxx_compile_cxx11=yes],
-    [ax_cv_cxx_compile_cxx11=no])])
-  if test x$ax_cv_cxx_compile_cxx11 = xyes; then
-    ac_success=yes
-  fi
-
-  m4_if([$1], [noext], [], [dnl
-  if test x$ac_success = xno; then
-    for switch in -std=gnu++11 -std=gnu++0x; do
-      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch])
-      AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch,
-                     $cachevar,
-        [ac_save_CXXFLAGS="$CXXFLAGS"
-         CXXFLAGS="$CXXFLAGS $switch"
-         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
-          [eval $cachevar=yes],
-          [eval $cachevar=no])
-         CXXFLAGS="$ac_save_CXXFLAGS"])
-      if eval test x\$$cachevar = xyes; then
-        CXXFLAGS="$CXXFLAGS $switch"
-        ac_success=yes
-        break
-      fi
-    done
-  fi])
-
-  m4_if([$1], [ext], [], [dnl
-  if test x$ac_success = xno; then
-    for switch in -std=c++11 -std=c++0x; do
-      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch])
-      AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch,
-                     $cachevar,
-        [ac_save_CXXFLAGS="$CXXFLAGS"
-         CXXFLAGS="$CXXFLAGS $switch"
-         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
-          [eval $cachevar=yes],
-          [eval $cachevar=no])
-         CXXFLAGS="$ac_save_CXXFLAGS"])
-      if eval test x\$$cachevar = xyes; then
-        CXXFLAGS="$CXXFLAGS $switch"
-        ac_success=yes
-        break
-      fi
-    done
-  fi])
-  AC_LANG_POP([C++])
-  if test x$ax_cxx_compile_cxx11_required = xtrue; then
-    if test x$ac_success = xno; then
-      AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.])
-    fi
-  else
-    if test x$ac_success = xno; then
-      HAVE_CXX11=0
-      AC_MSG_NOTICE([No compiler with C++11 support was found])
-    else
-      HAVE_CXX11=1
-      AC_DEFINE(HAVE_CXX11,1,
-                [define if the compiler supports basic C++11 syntax])
-    fi
-
-    AC_SUBST(HAVE_CXX11)
-  fi
-])
-
-AC_DEFUN([AX_CXX_COMPILE_STDCXX_14], [dnl
-  m4_if([$1], [], [],
-        [$1], [ext], [],
-        [$1], [noext], [],
-        [m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_14])])dnl
-  m4_if([$2], [], [ax_cxx_compile_cxx14_required=true],
-        [$2], [mandatory], [ax_cxx_compile_cxx14_required=true],
-        [$2], [optional], [ax_cxx_compile_cxx14_required=false],
-        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX_14])])dnl
-  AC_LANG_PUSH([C++])dnl
-  ac_success=no
-  AC_CACHE_CHECK(whether $CXX supports C++14 features by default,
-  ax_cv_cxx_compile_cxx14,
-  [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
-    [ax_cv_cxx_compile_cxx14=yes],
-    [ax_cv_cxx_compile_cxx14=no])])
-  if test x$ax_cv_cxx_compile_cxx14 = xyes; then
-    ac_success=yes
-  fi
-
-  m4_if([$1], [noext], [], [dnl
-  if test x$ac_success = xno; then
-    for switch in -std=gnu++14 -std=gnu++0y; do
-      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx14_$switch])
-      AC_CACHE_CHECK(whether $CXX supports C++14 features with $switch,
-                     $cachevar,
-        [ac_save_CXXFLAGS="$CXXFLAGS"
-         CXXFLAGS="$CXXFLAGS $switch"
-         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
-          [eval $cachevar=yes],
-          [eval $cachevar=no])
-         CXXFLAGS="$ac_save_CXXFLAGS"])
-      if eval test x\$$cachevar = xyes; then
-        CXXFLAGS="$CXXFLAGS $switch"
-        ac_success=yes
-        break
-      fi
-    done
-  fi])
-
-  m4_if([$1], [ext], [], [dnl
-  if test x$ac_success = xno; then
-    for switch in -std=c++14 -std=c++0y; do
-      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx14_$switch])
-      AC_CACHE_CHECK(whether $CXX supports C++14 features with $switch,
-                     $cachevar,
-        [ac_save_CXXFLAGS="$CXXFLAGS"
-         CXXFLAGS="$CXXFLAGS $switch"
-         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
-          [eval $cachevar=yes],
-          [eval $cachevar=no])
-         CXXFLAGS="$ac_save_CXXFLAGS"])
-      if eval test x\$$cachevar = xyes; then
-        CXXFLAGS="$CXXFLAGS $switch"
-        ac_success=yes
-        break
-      fi
-    done
-  fi])
-  AC_LANG_POP([C++])
-  if test x$ax_cxx_compile_cxx14_required = xtrue; then
-    if test x$ac_success = xno; then
-      AC_MSG_ERROR([*** A compiler with support for C++14 language features is required.])
-    fi
-  else
-    if test x$ac_success = xno; then
-      HAVE_CXX14=0
-      AC_MSG_NOTICE([No compiler with C++14 support was found])
-      AX_CXX_COMPILE_STDCXX_11([$1], [optional])
-    else
-      HAVE_CXX11=1
-      HAVE_CXX14=1
-      AC_DEFINE(HAVE_CXX14,1,
-                [define if the compiler supports basic C++14 syntax])
-      AC_DEFINE(HAVE_CXX11,1,
-                [define if the compiler supports basic C++14 syntax])
-    fi
-    AC_SUBST(HAVE_CXX11)
-    AC_SUBST(HAVE_CXX14)
-  fi
-])
-
-AC_DEFUN([AX_REQUIRE_STDCXX_11], [
-  if test x${HAVE_CXX11} != x1; then
-    AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.])
-  fi
-])
-
-AC_DEFUN([AX_REQUIRE_STDCXX_14], [
-  if test x${HAVE_CXX14} != x1; then
-    AC_MSG_ERROR([*** A compiler with support for C++14 language features is required.])
-  fi
-])

scripts/ax_init_standard_project.m4

@@ -170,9 +170,11 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
   AX_SUBST(NUMBERS)
   AX_SUBST(HOME)
   if test -f README.md; then
+    README_FILE=README.md
     README=$(tail -n +3 README.md)
     DESCRIPTION=$(head -1 README.md | sed 's,^#\+ *,,;s, *#\+$,,')
   else
+    README_FILE=README
     README=$(tail -n +3 README)
     DESCRIPTION=$(head -1 README)
   fi
@@ -182,6 +184,7 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
   else
     README_HTML="${README}"
   fi
+  AX_SUBST(README_FILE)
   AX_SUBST(README)
   _AM_SUBST_NOTMAKE([README])
   AX_SUBST(README_ESCAPED)
@@ -329,7 +332,7 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
   AX_ADD_MAKEFILE_TARGET_DEP([maintainer-clean-am], [maintainer-clean-standard-project-targets], [makefile.in])
   test -f makefile.in && cat >> makefile.in <<EOF
 #### Begin: Appended by $0
-EXTRA_DIST += bootstrap.sh ax_init_standard_project.m4 ax_cxx_compile_stdcxx_11.m4 \
+EXTRA_DIST += bootstrap.sh ax_init_standard_project.m4 ax_cxx_compile_stdcxx.m4 \
               ax_check_qt.m4 resolve-debbuilddeps.sh resolve-rpmbuilddeps.sh \
               build-resource-file.sh mac-create-app-bundle.sh
 
@@ -347,9 +350,9 @@ EOF
 
 # use this in configure.ac to support C++
 AC_DEFUN([AX_USE_CXX], [
-  m4_include(ax_cxx_compile_stdcxx_11.m4)
+  m4_include(ax_cxx_compile_stdcxx.m4)
   AC_LANG(C++)
-  AX_CXX_COMPILE_STDCXX_14(noext, optional)
+  AX_CXX_COMPILE_STDCXX([17], [noext], [optional])
   AC_PROG_CXX
   AC_PROG_CPP
 
@@ -362,7 +365,7 @@ AC_DEFUN([AX_USE_CXX], [
   CXXFLAGS="${CXXFLAGS//-g -O2/}"
   CFLAGS="${CFLAGS//-g -O2/}"
 
-# pass compile flags to make distcheck
+  # pass compile flags to make distcheck
   AM_DISTCHECK_CONFIGURE_FLAGS="CXXFLAGS='${CXXFLAGS}' CPPFLAGS='${CPPFLAGS}' CFLAGS='${CFLAGS}' LDFLAGS='${LDFLAGS}'"
   AC_SUBST(AM_DISTCHECK_CONFIGURE_FLAGS)
 
@@ -388,6 +391,20 @@ maintainer-clean-cxx-targets:
 EOF
 ])
 
+# require specific C++ version
+AC_DEFUN([AX_USE_CXX_11], [
+  AX_USE_CXX
+  AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
+])
+AC_DEFUN([AX_USE_CXX_14], [
+  AX_USE_CXX
+  AX_CXX_COMPILE_STDCXX([14], [noext], [mandatory])
+])
+AC_DEFUN([AX_USE_CXX_17], [
+  AX_USE_CXX
+  AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory])
+])
+
 # use this in configure.ac to support old school C
 AC_DEFUN([AX_USE_C], [
   AC_LANG(C)
@@ -634,7 +651,6 @@ AC_DEFUN([AX_USE_DOXYGEN], [
   AC_CHECK_PROG(have_doxygen, doxygen, yes, no)
   AC_CHECK_PROG(have_dot, dot, yes, no)
   AC_CHECK_PROG(have_mscgen, mscgen, yes, no)
-  AM_CONDITIONAL(NEED_PLANTUML, test "$have_doxygen" = "yes" -a "1.8.11" != $((echo "1.8.11"; doxygen -v 2>/dev/null) | sort -V | head -1))
   PDF_DOC=${PACKAGE_NAME}-${PACKAGE_VERSION}.pdf
   AC_SUBST(PDF_DOC)
   if test "$have_doxygen" = "no"; then
@@ -659,28 +675,12 @@ AC_DEFUN([AX_USE_DOXYGEN], [
   AX_ADD_MAKEFILE_TARGET_DEP([.PHONY], [pdf gen-uml-images], [doc/makefile.in])
   test -f doc/makefile.in && cat >> doc/makefile.in <<EOF
 #### Begin: Appended by $0
-doc: doxyfile @NEED_PLANTUML_TRUE@ gen-uml-images
+doc: doxyfile
-	@NEED_PLANTUML_TRUE@ doxyadd() { grep -q "\$\$[1] += \$\$[2]" doxyfile || sed -i '/^'"\$\$[1]"' *=/a'"\$\$[1]"' += '"\$\$[2]" doxyfile; }; \\
-	@NEED_PLANTUML_TRUE@ doxyadd ALIASES '"startuml{1}=@image html \\\\1\\\\n@image latex \\\\1\\\\n\\\\if DontIgnorePlantUMLCode"'; \\
-	@NEED_PLANTUML_TRUE@ doxyadd ALIASES '"enduml=\\\\endif"'; \\
-	@NEED_PLANTUML_TRUE@ doxyadd IMAGE_PATH '"gen-uml-images"';
 	doxygen doxyfile
 @PEDANTIC_TRUE@	test \! -s doxygen.errors
 
-@NEED_PLANTUML_TRUE@EXTRA_DIST = ${EXTRA_DIST} plantuml.jar
-@NEED_PLANTUML_TRUE@
-@NEED_PLANTUML_TRUE@gen-uml-images:
-@NEED_PLANTUML_TRUE@	test -d gen-uml-images || mkdir gen-uml-images
-@NEED_PLANTUML_TRUE@	eval \$\$(sed -n 's, *INPUT *\\(+\\?\\)= *\\(.*\\),INPUT\\1=" \\2",gp' doxyfile); \\
-@NEED_PLANTUML_TRUE@	eval \$\$(sed -n 's, *FILE_PATTERNS *\\(+\\?\\)= *\\(.*\\),FILE_PATTERNS\\1=" \\2",gp' doxyfile); \\
-@NEED_PLANTUML_TRUE@	SOURCES="**.("\$\$(echo \$\${FILE_PATTERNS} | sed 's,*.,,g;s, ,|,g')")"; \\
-@NEED_PLANTUML_TRUE@	for src in \$\$INPUT; do \\
-@NEED_PLANTUML_TRUE@	  java  -Djava.awt.headless=true -jar \${top_srcdir}/doc/plantuml.jar -v -o \$\$(pwd)/gen-uml-images "\$\$src/\$\$SOURCES"; \\
-@NEED_PLANTUML_TRUE@	done
-
 clean-documentation:
 	-rm doxygen.errors @PDF_DOC@
-	@NEED_PLANTUML_TRUE@ -rm -rf gen-uml-images
 distclean-documentation:
 	-rm -r html
 	-rm  @PACKAGE_NAME@.doxytag
@@ -962,8 +962,8 @@ AC_DEFUN([AX_PKG_CHECK], [
 #    $2 = pathes to search for
 AC_DEFUN([AX_REQUIRE_HEADER], [
   AC_CHECK_HEADER($1, [], [
-    if test -n "$2"; then
     found=0
+    if test -n "$2"; then
       for d in $2; do
         if test -f "${d}/$1"; then
           AC_MSG_NOTICE([found file ${d}/$1])

scripts/bootstrap.sh

@@ -129,9 +129,8 @@ GENERATED FILES
     * ${MY_NAME}
     * autogen.sh - just the basics to initialize auto tools and create configure
     * ax_init_standard_project.m4 - auxiliary macro definition file
-    * ax_cxx_compile_stdcxx_11.m4 - auxiliary macro definition file
+    * ax_cxx_compile_stdcxx.m4 - auxiliary macro definition file
     * ax_check_qt.m4 - auxiliary macro definition file
-    * makefile_test.inc.am - makefile to be included in tests
     * resolve-debbuilddeps.sh - script to install debian package dependencies
     * resolve-rpmbuilddeps.sh - script to install RPM package dependencies
     * build-in-docker.sh - script to build the project encapsulated in a docker container
@@ -274,7 +273,7 @@ FILES
       * Enable C++ testing using CppUnit: AX_USE_CPPUNIT
       * Enable other tests: AX_BUILD_TEST
       * Enable C++ examples, i.e. for libraries: AX_BUILD_EXAMPLES
-      * Check for C++11 support: AX_CXX_COMPILE_STDCXX_11 (see ax_cxx_compile_stdcxx_11.m4)
+      * Require C++17 support: AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory]) (see ax_cxx_compile_stdcxx.m4)
       * Require a QT module: AX_REQUIRE_QT (see ax_check_qt.m4)
       * Optionally use a QT module: AX_CHECK_QT  (see ax_check_qt.m4)
       * Require a module: AX_PKG_REQUIRE (see ax_init_standard_project.m4)
@@ -450,7 +449,7 @@ checkdir() {
     if ! test -d "$1"; then # create path
         run mkdir -p "$1"
         if test -n "${VCS}" -a $novcs -eq 0 && ! contains "$1" "${excludevcs[@]}"; then
-            run ${VCS} add "$1"
+            run --no-check ${VCS} add "$1"
         fi
     fi
 }
@@ -498,7 +497,7 @@ to() {
     run chmod $mode $1
     if test $exists -eq 0; then
         if test -n "${VCS}" -a $novcs -eq 0 && ! contains "$1" "${excludevcs[@]}"; then
-            run ${VCS} add "$1"
+            run --no-check ${VCS} add "$1"
             if test "${VCS}" = "svn"; then
                 run svn propset svn:keywords "Id" "$1"
             fi
@@ -523,10 +522,14 @@ copy() {
     if test "${1%/*}" != "$1"; then
         test -d "${1%/*}" || svn mkdir "${1%/*}"
     fi
+    if ! test -e "${source}"; then
+        ignored "$1" not found
+        return
+    fi
     run cp "${source}" "$1"
     if test $exists -eq 0; then
         if test -n "${VCS}" -a $novcs -eq 0 && ! contains "$1" "${excludevcs[@]}"; then
-            run ${VCS} add "$1"
+            run --no-check ${VCS} add "$1"
             if test "${VCS}" = "svn"; then
                 run svn propset svn:keywords "Id" "$1"
             fi
@@ -575,7 +578,7 @@ vcs2cl() {
     fi
     if test $exists -eq 0; then
         if test -n "${VCS}" -a $novcs -eq 0 && ! contains "ChangeLog" "${excludevcs[@]}"; then
-            run ${VCS} add ChangeLog
+            run --no-check ${VCS} add ChangeLog
         fi
     fi
 }
@@ -591,9 +594,8 @@ fi
 # Initialize the environment:
 copy ${MY_NAME}
 copy ax_init_standard_project.m4
-copy ax_cxx_compile_stdcxx_11.m4
+copy ax_cxx_compile_stdcxx.m4
 copy ax_check_qt.m4
-copy makefile_test.inc.am
 copy resolve-debbuilddeps.sh
 copy resolve-rpmbuilddeps.sh
 copy build-in-docker.sh
@@ -1505,9 +1507,10 @@ if testtag AX_USE_DOXYGEN; then
     if ! checkfile doc/doxyfile.in || \
         contains doc/doxyfile.in "${rebuildfiles[@]}"; then
         run doxygen -g doc/doxyfile.in
+        sed -i ':a;/\\$/{s///;N;s/ *\n */ /g;ba}' doc/doxyfile.in
         if test $exists -eq 0; then
             if test -n "${VCS}" -a $novcs -eq 0 && ! contains "doc/doxyfile" "${excludevcs[@]}"; then
-                run ${VCS} add doc/doxyfile.in
+                run --no-check ${VCS} add doc/doxyfile.in
                 if test "${VCS}" = "svn"; then
                     run svn propset svn:keywords "Id" doc/doxyfile.in
                 fi
@@ -1548,6 +1551,7 @@ if testtag AX_USE_DOXYGEN; then
         doxyreplace WARN_IF_UNDOCUMENTED NO
         doxyreplace WARN_LOGFILE doxygen.errors
         doxyreplace INPUT "@top_srcdir@/src"
+        doxyadd INPUT "@top_srcdir@/@README_FILE@"
         if testtag AX_USE_SCRIPTS; then
             doxyadd INPUT "@top_srcdir@/scripts"
         fi
@@ -1562,6 +1566,7 @@ if testtag AX_USE_DOXYGEN; then
             doxyadd EXCLUDE "@top_srcdir@/nodejs/node_modules"
 	    doxyadd EXCLUDE "@top_srcdir@/nodejs/public/javascripts/ext"
         fi
+        doxyreplace USE_MDFILE_AS_MAINPAGE "@top_srcdir@/@README_FILE@"
         doxyreplace FILE_PATTERNS '*.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.idl *.ddl *.odl *.h *.hh *.hxx *.hpp *.h++ *.cs *.d *.php *.php4 *.php5 *.phtml *.inc *.m *.markdown *.md *.mm *.dox *.py *.f90 *.f *.for *.tcl *.vhd *.vhdl *.ucf *.qsf *.as *.js *.wt *.sql'
         doxyreplace RECURSIVE YES
         doxyreplace EXCLUDE_PATTERNS "moc_* uic_* qrc_* version.[ch]xx"
@@ -1571,9 +1576,7 @@ if testtag AX_USE_DOXYGEN; then
         doxyreplace HTML_DYNAMIC_SECTIONS YES
         doxyreplace DISABLE_INDEX NO
         doxyreplace GENERATE_TREEVIEW YES 
-        if testtag AX_BUILD_EXAMPLES; then
+        doxyreplace EXAMPLE_PATH @top_srcdir@
-            doxyreplace EXAMPLE_PATH @top_srcdir@/examples
-        fi
         doxyreplace EXAMPLE_RECURSIVE YES
         doxyreplace FILTER_PATTERNS '*.wt=doxygen-webtester.sed *.sql=@top_srcdir@/sql-to-dot.sed'
         doxyreplace SOURCE_BROWSER YES
@@ -1874,7 +1877,7 @@ desktop_DATA = @PACKAGE_DESKTOP@
 dist_pkgdata_DATA = @PACKAGE_ICON@
 dist_noinst_DATA = ax_check_qt.m4 bootstrap.sh				\\
                    resolve-rpmbuilddeps.sh autogen.sh			\\
-                    ax_cxx_compile_stdcxx_11.m4 build-in-docker.sh	\\
+                    ax_cxx_compile_stdcxx.m4 build-in-docker.sh	        \\
                     build-resource-file.sh				\\
                     ax_init_standard_project.m4				\\
                     mac-create-app-bundle.sh resolve-debbuilddeps.sh    \\

scripts/build-in-docker.sh

@@ -7,7 +7,7 @@ if test "${arch}" = "amd64"; then
     myarch="amd64|i386"
 fi
 mode=
-img="mwaeckerlin/ubuntu:latest"
+img=
 repos=()
 keys=()
 dns=()
@@ -20,6 +20,10 @@ arch=$((which dpkg > /dev/null 2> /dev/null && dpkg --print-architecture) || ech
 host=
 flags=()
 wait=0
+commit=
+nopull=0
+prepare=0
+clean=
 if test -e ./build-in-docker.conf; then
     # you can preconfigure the variables in file build-in-docker.conf
     # if you do so, add the file to EXTRA_DIST in makefile.am
@@ -28,68 +32,111 @@ fi
 
 while test $# -gt 0; do
     case "$1" in
-        (-h|--help)
+        (-h|--help) cat <<EOF
-            echo "$0 [OPTIONS]"
+SYNOPSIS
-            echo
+
-            echo "OPTIONS:"
+  $0 [OPTIONS]
-            echo
+
-            echo "  -h, --help            show this help"
+OPTIONS
-            echo "  -m, --mode <type>     mode: deb, rpm, win, default: ${mode}"
+
-            echo "  -i, --image <image>   use given docker image instead of ${img}"
+  -h, --help            show this help
-            echo "  -a, --arch <arch>     build for given hardware architecture"
+  -m, --mode <type>     mode: deb, rpm, win, default: ${mode}
-            echo "  -t, --targets targets specify build targets, default: ${targets}"
+  -i, --image <image>   use given docker image instead of ${img}
-            echo "  --host <target-arch>  host for cross compiling, e.g. i686-w64-mingw32"
+  -a, --arch <arch>     build for given hardware architecture
-            echo "  -f, --flag <flag>     add flag to ./bootstrap.sh or ./configure"
+  -t, --targets targets specify build targets, default: ${targets}
-            echo "  -r, --repo <url>      add given apt repository"
+  --host <target-arch>  host for cross compiling, e.g. i686-w64-mingw32
-            echo "  -k, --key <url>       add public key from url"
+  -f, --flag <flag>     add flag to ./bootstrap.sh or ./configure
-            echo "  -n, --dns <ip>        add ip as dns server"
+  -r, --repo <url>      add given apt repository
-            echo "  -e, --env <var>=<val> set environment variable in docker"
+  -k, --key <url>       add public key from url
-            echo "  -d, --dir <dir>       access given directory read only"
+  -n, --dns <ip>        add ip as dns server
-            echo "  -p, --package <pkg>   install extra debian packages"
+  -e, --env <var>=<val> set environment variable in docker
-            echo "  -c, --cmd <command>   execute commands as root in docker"
+  -d, --dir <dir>       access given directory read only
-            echo "  -w, --wait            on error keep docker container and wait for enter"
+  -p, --package <pkg>   install extra debian packages
-            echo
+  -c, --cmd <command>   execute commands as root in docker
-            echo "  The option -i must be after -m, because mode sets a new default image"
+  -w, --wait            on error keep docker container and wait for enter
-            echo "  The option -m must be after -t, because mode may be auto detected from targets"
+  --clean               run maintainer-clean before build
-            echo "  The option -m must be after -h, because mode may set a host"
+  --commit <image>      commit the container as image after setup, then exit
-            echo "  If target is either deb or rpm, mode is set to the same value"
+  --no-pull             do not pull image before start (use local image)
-            echo "  If target is win, host is set to i686-w64-mingw32"
+  --prepare             only prepare the image, then wait
-            echo
+
-            echo "  The options -r -k -e -d -p -c can be repeated several times."
+  The option -i must be after -m, because mode sets a new default image
-            echo
+  The option -m must be after -t, because mode may be auto detected from targets
-            echo "  The options -r -p -c allow an if-then-else contruct"
+  The option -m must be after -h, because mode may set a host
-            echo "  depending on the operating system:"
+  If target is either deb or rpm, mode is set to the same value
-            echo "    <os>:::<A>:::<B>"
+  If target is win, host is set to i686-w64-mingw32
-            echo "    <os>:::<A>"
+
-            echo "  Read as: On linux type <os> use <A> else use <B>"
+  The options -r -k -e -d -p -c can be repeated several times.
-            echo "  That means: If the distributer ID or codename in lsb_release"
+
-            echo "  matches regular expression <os>, then <A> is replaced, else <B> is replaced."
+  The options -r -p -c allow an if-then-else contruct
-            echo "  The three colons are for splitting <os> from <A> and <B> part."
+  depending on the operating system:
-            echo "  E.g.: Install package curl on wheezy and npm on olter systems:"
+    <os>:::<A>:::<B>
-            echo "    $0 -p Debian|precise:::curl:::npm"
+    <os>:::<A>
-            echo
+  Read as: On linux type <os> use <A> else use <B>
-            echo "EXAMPLE:"
+  That means: If the distributer ID or codename in lsb_release
-            echo
+  matches regular expression <os>, then <A> is replaced, else <B> is replaced.
-            echo "$0 -i mwaeckerlin/ubuntu:trusty-i386 \\"
+  The three colons are for splitting <os> from <A> and <B> part.
-            echo "                     -t deb \\"
+  E.g.: Install package curl on wheezy and npm on olter systems:
-            echo "                     -e ANDROID_HOME=/opt/local/android \\"
+    $0 -p Debian|precise:::curl:::npm
-            echo "                     -d /opt/local/android \\"
+
-            echo "                     -r universe \\"
+PERFORMANCE
-            echo "                     -r https://repository.mrw.sh \\"
+
-            echo "                     -k https://repository.mrw.sh/PublicKey \\"
+  Each build starts with an empty image and first installs all
-            echo "                     -p mrw-c++"
+  dependencies. You can speed up the build process by using an image,
-            echo
+  where all dependencies are already installed. The disadvantage of
+  this approach is, that missing dependencies are not detected, so
+  installing all dependencies into an empty image is a test for the
+  dependency specification.
+
+  Create an image from ubuntu:trusty that contains all dependencies:
+
+    $0 -i ubuntu:trusty --tag my/trusty
+
+  Now you can use the image my/trusty, but since it is not stored in a
+  repository, you have to either push it to a repository (here my is
+  your name in docker hub), or simply use it local only and add the
+  flag --no-pull:
+
+    $0 -i my/trusty -t all
+
+  As long as you work with my/trusty, the dependencies don't need to
+  be donwloaded in each build.
+
+TESTING
+
+  When you want to experiment with your builds, i.e. to trace a build
+  problem, then option --prepare comes handy. It just starts an image
+  with all dependencies, then waits and gives you information on how
+  you can enter the image for manual tests in a temporary
+  container. As soon as you hit the enter key, it cleans up the
+  temporary container.
+
+    $0 -i ubuntu:trusty --prepare
+
+EXAMPLE
+
+  $0 -i mwaeckerlin/ubuntu:trusty-i386 \\
+                     -t deb \\
+                     -e ANDROID_HOME=/opt/local/android \\
+                     -d /opt/local/android \\
+                     -r universe \\
+                     -r https://repository.mrw.sh \\
+                     -k https://repository.mrw.sh/PublicKey \\
+                     -p mrw-c++
+
+EOF
             exit 0
             ;;
-        (-m|--mode) shift;
+        (-m|--mode)
+            shift;
             mode="$1"
+            if test -z "$img"; then
                 case "$mode" in
-                (deb|apt) img="mwaeckerlin/ubuntu:latest";;
+                    (deb|apt) img="mwaeckerlin/debbuildenv";;
                     (rpm|zypper) img="opensuse:latest";;
                     (yum) img="centos:latest";;
                     (dnf) img="fedora:latest";;
                     (win)
-                    img="mwaeckerlin/ubuntu:latest"; host="${host:---host=i686-w64-mingw32}"
+                        img="mwaeckerlin/debbuildenv"; host="${host:---host=i686-w64-mingw32}"
                         targets="all install"
                         flags+=("--prefix=/workdir/usr")
                         packages+=("mingw-w64")
@@ -99,6 +146,7 @@ while test $# -gt 0; do
                         exit 1
                         ;;
                 esac
+            fi
             ;;
         (-i|--image) shift;
             img="$1"
@@ -145,6 +193,18 @@ while test $# -gt 0; do
         (-w|--wait)
             wait=1
             ;;
+        (--clean)
+            clean="--clean -c"
+            ;;
+        (--commit) shift;
+            commit="$1"
+            ;;
+        (--no-pull)
+            nopull=1
+            ;;
+        (--prepare)
+            prepare=1
+            ;;
         (*)
             echo "**** ERROR: unknown option '$1', try --help" 1>&2
             exit 1
@@ -157,6 +217,15 @@ while test $# -gt 0; do
     shift
 done
 
+function waitforinput() {
+    set +x
+    echo "  ... now you can access the docker container as root or user:"
+    echo "      docker exec -it ${DOCKER_ID} bash"
+    echo "      docker exec -u $(id -u) -it ${DOCKER_ID} bash"
+    echo -n "  ... press enter to cleanup: "
+    read
+}
+
 function traperror() {
     set +x
     local DOCKER_ID="$1"
@@ -177,11 +246,7 @@ function traperror() {
                 echo
             fi
             if [ "$wait" -eq 1 ]; then
-                echo "  ... now you can access the docker container as root or user:"
+                waitforinput
-                echo "      docker exec -it ${DOCKER_ID} bash"
-                echo "      docker exec -u $(id -u) -it ${DOCKER_ID} bash"
-                echo -n "  ... press enter to cleanup: "
-                read
             fi
             echo -n "   ... cleanup docker: "
             docker stop "${DOCKER_ID}" || true
@@ -243,7 +308,10 @@ function ifthenelse() {
 
 set -x
 
-docker pull $img
+if test -z "$img"; then
+    img="mwaeckerlin/debbuildenv"
+fi
+test $nopull -eq 1 || docker pull $img
 DOCKER_ID=$(docker create ${dns[@]} ${dirs[@]} ${envs[@]} -w /workdir $img sleep infinity)
 trap 'traperror '"${DOCKER_ID}"' "$? ${PIPESTATUS[@]}" $LINENO $BASH_LINENO "$BASH_COMMAND" "${FUNCNAME[@]}" "${FUNCTION}"' SIGINT INT TERM EXIT
 if ! [[ $arch =~ $myarch ]]; then
@@ -262,8 +330,8 @@ if test -z "$mode"; then
         (*deb*) mode=deb;;
         (*rpm*) mode=rpm;;
         (*) case "$img" in
-                (*ubuntu*|*debian*|*mint*) mode=deb;;
+                (*deb*|*ubuntu*|*debian*|*mint*) mode=deb;;
-                (*fedora*|*centos*|*mageia*) mode=rpm;;
+                (*rpm*|*fedora*|*centos*|*mageia*) mode=rpm;;
                 (*mingw*|*win*) mode=win;;
                 (*) mode=deb;;
             esac;;
@@ -272,25 +340,18 @@ fi
 case "$mode" in
     (deb|apt|win)
         OPTIONS='-o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confnew -y --force-yes --no-install-suggests --no-install-recommends'
-        PREVENT='libpam-systemd policykit.* colord dconf-service'
         docker exec ${DOCKER_ID} apt-get update ${OPTIONS}
-        docker exec ${DOCKER_ID} apt-mark hold ${PREVENT}
         #docker exec ${DOCKER_ID} apt-get upgrade ${OPTIONS}
-        docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- python-software-properties software-properties-common apt-transport-https dpkg-dev lsb-release wget || \
+        docker exec ${DOCKER_ID} apt-get install ${OPTIONS} python-software-properties software-properties-common apt-transport-https dpkg-dev lsb-release wget || \
-            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- software-properties-common apt-transport-https dpkg-dev lsb-release wget || \
+            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} software-properties-common apt-transport-https dpkg-dev lsb-release wget || \
-            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- python-software-properties apt-transport-https dpkg-dev lsb-release wget;
+            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} python-software-properties apt-transport-https dpkg-dev lsb-release wget;
         if [[ "${img}" =~ "ubuntu" ]]; then
-            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- locales
+            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} locales
             docker exec ${DOCKER_ID} locale-gen ${LANG}
             docker exec ${DOCKER_ID} update-locale LANG=${LANG}
         fi
-        for f in ${PREVENT}; do
+        if test -n "${keys[*]}"; then # fix dependency bug in cosmic and stretch
-            docker exec ${DOCKER_ID} bash -c "echo 'Package: ${f}' >> /etc/apt/preferences"
+            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} gnupg
-            docker exec ${DOCKER_ID} bash -c "echo 'Pin-Priority: -100' >> /etc/apt/preferences"
-            docker exec ${DOCKER_ID} bash -c "echo >> /etc/apt/preferences"
-        done
-        if test -n "${keys[@]}"; then # fix dependency bug in cosmic and stretch
-            docker exec ${DOCKER_ID} apt-get install ${OPTIONS} ${PREVENT// /- }- gnupg
             for key in "${keys[@]}"; do
                 wget -O- "$key" \
                     | docker exec -i ${DOCKER_ID} apt-key add -
@@ -302,7 +363,7 @@ case "$mode" in
 
         docker exec ${DOCKER_ID} apt-get update ${OPTIONS}
         for package in "${packages[@]}"; do
-            ifthenelse "${package}" "apt-get install ${OPTIONS} ${PREVENT// /- }- ARG"
+            ifthenelse "${package}" "apt-get install ${OPTIONS} ARG"
         done
         for command in "${commands[@]}"; do
             ifthenelse "${command}" "ARG"
@@ -357,13 +418,24 @@ for f in "${flags[@]}"; do
     FLAGS+=($(ifthenelse "$f" "echo 'ARG'"))
 done
 
-docker exec -u $(id -u):$(id -g) ${DOCKER_ID} ./bootstrap.sh -t "${targets}" ${host} "${FLAGS[@]}"
+if test -n "$commit"; then
+    docker commit ${DOCKER_ID} "$commit"
+    echo "commited new image: $commit"
+    exit 0
+fi
+          
+if test $prepare -eq 1; then
+    waitforinput
+    exit 0
+fi
+          
+docker exec -u $(id -u):$(id -g) ${DOCKER_ID} ./bootstrap.sh ${clean} -t "${targets}" ${host} "${FLAGS[@]}"
 
 # last check: try to install built deb or rpm files (if not already cleaned up)
 # not supported in trusty and jessie
 if test "$mode" = deb -a "${img//trusty/}" = "${img}" -a "${img//jessie/}" = "${img}"; then
    if test "${targets//deb/}" != "${targets}" && ls *.deb > /dev/null 2> /dev/null; then
-       docker exec ${DOCKER_ID} bash -c "apt-get install ${OPTIONS} ${PREVENT// /- }- /workdir/*.deb"
+       docker exec ${DOCKER_ID} bash -c "apt-get install ${OPTIONS} /workdir/*.deb"
    fi
 fi
 if test "$mode" = rpm -a "${targets//rpm/}" != "${targets}"; then

scripts/makefile.am

@@ -11,7 +11,7 @@
 pkgdocdatadir = ${pkgdatadir}/doc
 pkgtestdatadir = ${pkgdatadir}/test
 
-dist_pkgdata_DATA = ax_check_qt.m4 bootstrap.sh mac-create-app-bundle.sh makefile_test.inc.am ax_cxx_compile_stdcxx_11.m4 build-in-docker.sh resolve-debbuilddeps.sh build-resource-file.sh resolve-rpmbuilddeps.sh ax_init_standard_project.m4 sql-to-dot.sed
+dist_pkgdata_DATA = ax_check_qt.m4 bootstrap.sh mac-create-app-bundle.sh ax_cxx_compile_stdcxx.m4 build-in-docker.sh resolve-debbuilddeps.sh build-resource-file.sh resolve-rpmbuilddeps.sh ax_init_standard_project.m4 sql-to-dot.sed
 dist_pkgdocdata_DATA = doc/plantuml.jar
 dist_pkgtestdata_DATA = test/runtests.sh
 

scripts/template.sh

@@ -1,5 +1,7 @@
 #!/bin/bash -e
 
+# documentation: run with option --help
+
 ##########################################################################################
 #### template for bash scripts #### START BELOW ##########################################
 ##########################################################################################
@@ -45,25 +47,25 @@ message() {
 # write a success message
 success() {
     echo -n "${bold}${green}success" 1>&2
-    append_msg $* 1>&2
+    append_msg "$*" 1>&2
 }
 
 # write a notice
 notice() {
     echo -n "${bold}${yellow}notice" 1>&2
-    append_msg $* 1>&2
+    append_msg "$*" 1>&2
 }
 
 # write a warning message
 warning() {
     echo -en "${bold}${red}warning" 1>&2
-    append_msg $* 1>&2
+    append_msg "$*" 1>&2
 }
 
 # write error message
 error() {
     echo -en "${bold}${red}error" 1>&2
-    append_msg $* 1>&2
+    append_msg "$*" 1>&2
 }
 
 # run a command, print the result and abort in case of error
@@ -91,9 +93,10 @@ run() {
             exit 1
         else
             warning "ignored return code: $res"
+            return 0
         fi
     else
-        success
+        return 1
     fi
 }
 
@@ -119,7 +122,6 @@ function traperror() {
             exit $e
         fi
     done
-    success
     exit 0
 }
 
@@ -135,7 +137,7 @@ trap 'traperror "$? ${PIPESTATUS[@]}" $LINENO $BASH_LINENO "$BASH_COMMAND" "${FU
 ######################################################### commandline parameter evaluation
 while test $# -gt 0; do
     case "$1" in
-        (--help|-h) less <<EOF
+        (--help|-h) cat <<EOF
 SYNOPSIS
 
   $0 [OPTIONS]
@@ -157,4 +159,3 @@ EOF
 done
 
 ##################################################################################### Main
-

template.sh

@@ -1,5 +1,7 @@
 #!/bin/bash -e
 
+# documentation: run with option --help
+
 ##########################################################################################
 #### template for bash scripts #### START BELOW ##########################################
 ##########################################################################################
@@ -45,25 +47,25 @@ message() {
 # write a success message
 success() {
     echo -n "${bold}${green}success" 1>&2
-    append_msg $* 1>&2
+    append_msg "$*" 1>&2
 }
 
 # write a notice
 notice() {
     echo -n "${bold}${yellow}notice" 1>&2
-    append_msg $* 1>&2
+    append_msg "$*" 1>&2
 }
 
 # write a warning message
 warning() {
     echo -en "${bold}${red}warning" 1>&2
-    append_msg $* 1>&2
+    append_msg "$*" 1>&2
 }
 
 # write error message
 error() {
     echo -en "${bold}${red}error" 1>&2
-    append_msg $* 1>&2
+    append_msg "$*" 1>&2
 }
 
 # run a command, print the result and abort in case of error
@@ -91,9 +93,10 @@ run() {
             exit 1
         else
             warning "ignored return code: $res"
+            return 0
         fi
     else
-        success
+        return 1
     fi
 }
 
@@ -119,7 +122,6 @@ function traperror() {
             exit $e
         fi
     done
-    success
     exit 0
 }
 
@@ -135,7 +137,7 @@ trap 'traperror "$? ${PIPESTATUS[@]}" $LINENO $BASH_LINENO "$BASH_COMMAND" "${FU
 ######################################################### commandline parameter evaluation
 while test $# -gt 0; do
     case "$1" in
-        (--help|-h) less <<EOF
+        (--help|-h) cat <<EOF
 SYNOPSIS
 
   $0 [OPTIONS]
@@ -157,4 +159,3 @@ EOF
 done
 
 ##################################################################################### Main
-