## @file
##
## $Id$
##
## $Date$
## $Author$
##
## @copy © Marc Wäckerlin
## @license LGPL, see file <a href="license.html">COPYING</a>
##

# init
AC_INIT([mrw/mrw.hpp.in])
PACKAGENAME=mrw-c++
m4_define(x_major, 2)
m4_define(x_minor, 2)
m4_define(x_least, 0)
AM_INIT_AUTOMAKE(@PACKAGENAME@, @MAJOR@.@MINOR@.@LEAST@, [marc@waeckerlin.org])

# copy M4 to shell
MAJOR=x_major
MINOR=x_minor
LEAST=x_least
AC_SUBST(MAJOR)
AC_SUBST(MINOR)
AC_SUBST(LEAST)

# libtool versioning
LIB_MAJOR=m4_eval(x_major+x_minor)
LIB_MINOR=x_least
LIB_LEAST=x_minor
LIB_VERSION="${LIB_MAJOR}:${LIB_MINOR}:${LIB_LEAST}"
AC_SUBST(LIB_VERSION)

# macros
README=README
AC_SUBST_FILE(README)
CHANGE_LOG=ChangeLog
AC_SUBST_FILE(CHANGE_LOG)

# Get rid of that stupid -O2 -g opions!
CXXFLAGS="${CXXFLAGS:-}"

# languages
AC_LANG(C++)

# programs
AC_PROG_CXX
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_LIBTOOL
AC_CHECK_PROG(have_doxygen, doxygen, yes, no)
AC_CHECK_PROG(have_dot, dot, yes, no)

# solaris?
AC_CHECK_HEADER(sys/old_procfs.h, [AM_CPPFLAGS=-D__solaris__])

# libraries
AC_CHECK_HEADER(log4cxx/logger.h, [have_log4cxx=yes])
AC_CHECK_HEADER(ltdl.h, [have_ltdl=yes])

# Arguments
AM_MAINTAINER_MODE
AC_ARG_ENABLE(threads,
  [  --disable-threads       disable multithreading],
  [with_threads="$enableval"], [with_threads="yes"])
THREADS="-pthread"
AM_CONDITIONAL(HAVE_THREADS, test "$with_threads" == "yes")
AC_ARG_ENABLE(autofntrace,
  [  --disable-autofntrace   disable automated function trace (requires gcc)],
  [with_autofntrace="$enableval"], [with_autofntrace="yes"])
AM_CONDITIONAL(AUTOFNTRACE, test "$with_autofntrace" == "yes" -a -n "$GCC")
AC_ARG_ENABLE(pedantic,
  [  --enable-pedantic       enable all warnings and checks, abort on warnings],
  [have_pedantic="$enableval"; test "$enableval" = "yes" &&  \
     AM_CXXFLAGS="${AM_CXXFLAGS:-} -pedantic-errors -Wall -W -Wfloat-equal -Wundef -Wendif-labels -Wpointer-arith -Wcast-align -Wwrite-strings -Wconversion -Wsign-compare -Wmissing-format-attribute -Wno-multichar -Wpacked -Wredundant-decls -Werror -Wshadow -Wcast-qual -Wno-ctor-dtor-privacy"])
dnl problem in libs: -Wshadow -Wcast-qual
dnl auto.hpp: -Wno-ctor-dtor-privacy (removed)
AM_CONDITIONAL(PEDANTIC, test "$enableval" = "yes")
AC_ARG_ENABLE(dot,
  [  --disable-dot           disable dot graphic tools for documentation],
  [have_dot="$enableval"])
test "$enableval" = "yes" && HAVE_DOT="YES" || HAVE_DOT="NO";
AC_ARG_ENABLE(log4cxx,
  [  --disable-log4cxx       disable use of log4cxx library in automated
                          stack trace],
  [have_log4cxx="$enableval"])
AM_CONDITIONAL(HAVE_LOG4CXX, test "$have_log4cxx" = "yes")
AC_ARG_ENABLE(ltdl,
  [  --disable-ltdl          disable use of libtool library dynamic loading
                          Note: For automated stack trace, you need ltdl],
  [have_ltdl="$enableval"])
AM_CONDITIONAL(HAVE_LTDL, test "$have_ltdl" = "yes")
AC_ARG_ENABLE(stacktrace,
  [  --disable-stacktrace    disable stack trace, use this if you cannot
                          compile the library on your system otherwise and
                          you still want to use the other parts],
  [have_stacktrace="$enableval"], [have_stacktrace=$have_ltdl])
AM_CONDITIONAL(HAVE_STACKTRACE, test "$have_stacktrace" = "yes")
if test "$have_stacktrace" = "yes"; then
  AC_SEARCH_LIBS(cplus_demangle, [demangle iberty],
                 [AC_MSG_RESULT([OK, found cplus_demangle])],
[AC_MSG_ERROR([Function cplus_demangle not found!
 - I looked in libdemangle and libiberty
 - Try "ls -l /usr/lib/libdemangle* /usr/lib/libiberty*"
    - is one of them installed?
       - If yes, try: "nm <filename> | grep cplus_demangle"
          -> is the symbol defined?
 - Try to compile with option --disable-stacktrace
   If you are not a developer, you perhaps don't need it...?])])
fi
AC_ARG_WITH([boost-thread],AS_HELP_STRING([--with-boost-thread],
            [specify the boost thread library or suffix to use]),
            [if test "$with_boost_thread" != "no"; then
               if test "$with_boost_thread" != "yes"; then
                 chk_libs="$with_boost_thread boost_thread-$with_boost_thread"
               else
                 chk_libs="boost_thread boost_thread-mt boost_thread-gcc-mt"
               fi
             else
               chk_libs=""
             fi],
             [chk_libs="boost_thread boost_thread-mt boost_thread-gcc-mt"])
for ax_lib in $chk_libs; do
  AC_CHECK_LIB($ax_lib, main, [BOOST_THREAD_LIB="-l$ax_lib" break])
done
AC_SUBST(BOOST_THREAD_LIB)
AM_CONDITIONAL(HAVE_BOOST_THREAD, test -n "$BOOST_THREAD_LIB")
AM_PATH_CPPUNIT([1.0.0], [have_cppunit="yes"], [have_cppunit="no"])

# export macros
AC_SUBST(HAVE_DOT)
AC_SUBST(THREADS)
AC_SUBST(PACKAGENAME)
AC_SUBST(AM_CXXFLAGS)
AC_SUBST(AM_CPPFLAGS)
AC_SUBST(LIBS)

# create output
AC_CONFIG_FILES([makefile mrw-c++.spec
                 mrw/makefile mrw/doxyfile mrw/mrw.hpp mrw/version.cpp])
AC_OUTPUT

# infos and warnings
if test "$have_doxygen" = "no"; then
AC_MSG_WARN([Missing program doxygen!
  - you cannot rebuild the documentation with make doc
  - there are precompiled derived files in the distribution]); fi
if test "$have_dot" = "no"; then
AC_MSG_WARN([Missing program dot!
  - when you rebild documentation with make doc, there are no generated images
  - there are precompiled derived files in the distribution]); fi
if test "$have_cppunit" = "no"; then
AC_MSG_WARN([Missing cppunit development library!
  - you cannot check the library using "make check"
  - everything else works perfectly]); fi
if test "$have_pedantic" == "yes"; then
AC_MSG_NOTICE([Pedantic compile mode enabled!
  - all warnings for GNU g++ are enabled
  - all warnings result in an error
  - doxygen warnings are treated as error too]); fi
if test "$with_threads" == "no"; then
AC_MSG_WARN([Multithreading support is disabled!
  - use --enable-threads to enable it
  - actually, there's only support for automated function trace]); fi
if test "$have_log4cxx" != "yes"; then
AC_MSG_WARN([Library log4cxx will not be used!
  - if you want it, download it from:
    http://logging.apache.org/log4cxx]); fi
if test "$have_stacktrace" != "yes"; then
AC_MSG_WARN([mrw::StackTrace is disabled!]); fi
if test "$have_ltdl" != "yes"; then
AC_MSG_ERROR([mrw::DynamicLibrary dynamic library loading is disabled!
 - mrw::StackTrace is disabled without mrw::DynamicLibrary
 - install the GNU libtool, if you need mrw::DynamicLibrary]);fi
if test "$with_autofntrace" != "yes" -o -z "$GCC"; then
AC_MSG_WARN([Automated GNU gcc function tracing is disabled!
 - libmrwautofunctiontracelog4cxx won't be built]);fi
if test -z "$BOOST_THREAD_LIB"; then
AC_MSG_WARN([Boost thread library not found!
 - multithreading is based on boost thread library
 - support for multithreading is disabled
 - try to pass the library name, e.g.
   --with-boost-thread=boost_thread-icc-mt]);fi