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More tweaks to C++ compiler detection
Now CXXFLAGS is left alone by autoconf: only the user can override it. Properly set -g and -O options, which were overriden. Try to put the arguments in a more reasonable ordering.
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@ -162,6 +162,7 @@ AC_DEFUN([LYX_LIB_STDCXX],
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AC_DEFUN([LYX_PROG_CXX],
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[AC_REQUIRE([AC_PROG_CXX])
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AC_REQUIRE([AC_PROG_CXXCPP])
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AC_LANG_PUSH(C++)
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LYX_PROG_CLANG
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LYX_LIB_STDCXX
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@ -260,8 +261,8 @@ if test x$GXX = xyes; then
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AM_CXXFLAGS="-g $AM_CXXFLAGS"
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fi
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if test $build_type = gprof ; then
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AM_CXXFLAGS="-pg $AM_CXXFLAGS"
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AM_LDFLAGS="-pg $AM_LDFLAGS"
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AM_CXXFLAGS="$AM_CXXFLAGS -pg"
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AM_LDFLAGS="$AM_LDFLAGS -pg"
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fi
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if test $build_type = profiling ; then
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AM_CXXFLAGS="$AM_CXXFLAGS -fno-omit-frame-pointer"
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@ -274,23 +275,20 @@ if test x$GXX = xyes; then
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if test x$enable_warnings = xyes ; then
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case $gxx_version in
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3.1*|3.2*|3.3*)
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AM_CPPFLAGS="-W -Wall $AM_CPPFLAGS"
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AM_CPPFLAGS="$AM_CPPFLAGS -Wall -W"
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;;
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3.4*|4.0*|4.1*|4.2*|4.3*|4.4*|4.5*|4.6*|4.7*|4.8*|clang)
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AM_CPPFLAGS="-Wextra -Wall $AM_CPPFLAGS"
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AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra"
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;;
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*)
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AM_CPPFLAGS="-Wextra -Wall -Wfloat-conversion $AM_CPPFLAGS"
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AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra -Wfloat-conversion"
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;;
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esac
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fi
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case $gxx_version in
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3.1*) AM_CXXFLAGS="-finline-limit=500 ";;
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3.2*|3.3*) AM_CXXFLAGS="";;
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3.4*|4.*)
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AM_CXXFLAGS=""
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test $enable_pch = yes && lyx_pch_comp=yes
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;;
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3.1*) AM_CXXFLAGS="$AM_CXXFLAGS -finline-limit=500";;
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3.2*|3.3*) ;;
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*) test $enable_pch = yes && lyx_pch_comp=yes ;;
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esac
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if test x$enable_stdlib_debug = xyes ; then
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dnl FIXME: for clang/libc++, one should define _LIBCPP_DEBUG2=0
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@ -322,15 +320,15 @@ if test x$GXX = xyes; then
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3.*|4.0*|4.1*|4.2*) AC_ERROR([There is no C++11 support in gcc 3.x]);;
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4.3*|4.4*|4.5*|4.6*)
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lyx_flags="$lyx_flags c++11-mode"
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AM_CXXFLAGS="-std=gnu++0x $AM_CXXFLAGS";;
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AM_CXXFLAGS="$AM_CXXFLAGS -std=gnu++0x";;
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clang)
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dnl presumably all clang version support c++11.
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lyx_flags="$lyx_flags c++11-mode"
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dnl the deprecated-register warning is very annoying with Qt4.x right now.
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AM_CXXFLAGS="-std=c++11 -Wno-deprecated-register $AM_CXXFLAGS";;
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AM_CXXFLAGS="$AM_CXXFLAGS -std=c++11 -Wno-deprecated-register";;
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*)
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lyx_flags="$lyx_flags c++11-mode"
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AM_CXXFLAGS="-std=gnu++11 $AM_CXXFLAGS"
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AM_CXXFLAGS="$AM_CXXFLAGS -std=gnu++11"
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;;
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esac
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if test x$CLANG = xno || test $lyx_cv_lib_stdcxx = yes; then
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10
configure.ac
10
configure.ac
@ -67,7 +67,17 @@ AM_PATH_PYTHON(2.4.0,, :)
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AC_PROG_RANLIB
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### Check for a C++ compiler
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dnl We have to do weird tricks so that autoconf does not touch CXXFLAGS even
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dnl if it is not set. We do not use autoconf defaults.
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lyx_has_CXXFLAGS=${CXXFLAGS+yes}
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if ! test "$lyx_has_CXXFLAGS" = yes; then
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dnl set to a dummy value so that AC_PROG_CXX does not try to set CXXFLAGS
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CXXFLAGS=" "
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fi
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LYX_PROG_CXX
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if ! test "$lyx_has_CXXFLAGS" = yes; then
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unset CXXFLAGS
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fi
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AC_LANG(C++)
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### Objective-C compiler
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