fix C++11 detection

COPYING

@@ -1 +1 @@
-/usr/share/automake-1.14/COPYING
+/usr/share/automake-1.15/COPYING

ChangeLog

@@ -1,3 +1,17 @@
+2016-08-19 14:52  
+
+	* COPYING, INSTALL, ax_cxx_compile_stdcxx_11.m4,
+	  ax_init_standard_project.m4, bootstrap.sh, makefile_test.inc.am,
+	  src/matrix.hxx, test/basic.cxx: more operators more tests
+
+2016-08-18 22:03  
+
+	* COPYING, ChangeLog, INSTALL, src/matrix.hxx: more operators
+
+2016-08-17 07:26  
+
+	* configure.ac: only requires c++11
+
 2016-08-16 14:41  
 
 	* COPYING, INSTALL, ax_init_standard_project.m4, configure.ac,

INSTALL

@@ -1 +1 @@
-/usr/share/automake-1.14/INSTALL
+/usr/share/automake-1.15/INSTALL

ax_cxx_compile_stdcxx_11.m4

@@ -201,15 +201,17 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX_14], [dnl
       AC_MSG_ERROR([*** A compiler with support for C++14 language features is required.])
     fi
   else
-    HAVE_CXX11=${HAVE_CXX14}
     if test x$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)

ax_init_standard_project.m4

@@ -252,6 +252,10 @@ AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
     if test "$GCOV" == "yes"; then
       GCOV=gcov
     fi
+    AC_CHECK_PROG(has_gcov, [$GCOV], [yes], [no])
+    if test "$has_gcov" != "yes"; then
+      AC_MSG_ERROR([gcov: program $GCOV not found])
+    fi
     AC_MSG_NOTICE([Coverage tests enabled, using ${GCOV}]);
     AM_CXXFLAGS="${AM_CXXFLAGS:-} -O0 --coverage -fprofile-arcs -ftest-coverage"
     AM_LDFLAGS="${AM_LDFLAGS} -O0 --coverage -fprofile-arcs"

makefile_test.inc.am

@@ -3,3 +3,7 @@
 ##       1         2         3         4         5         6         7         8
 ## 45678901234567890123456789012345678901234567890123456789012345678901234567890
 
+%.gcda: %
+	gcov $<
+
+CLEANFILES += ${CLEANFILES} ${TEST:%=%.gcno} ${TEST:%=%.gcda} *.gcov