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More tweaks to C++ compiler detection

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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.
This commit is contained in:
Jean-Marc Lasgouttes 2015-01-13 15:59:30 +01:00
parent 3fca2b557b
commit 33ff0f276a
2 changed files with 22 additions and 14 deletions
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26
config/lyxinclude.m4
View File

@ -162,6 +162,7 @@ AC_DEFUN([LYX_LIB_STDCXX],
AC_DEFUN([LYX_PROG_CXX],
[AC_REQUIRE([AC_PROG_CXX])
AC_REQUIRE([AC_PROG_CXXCPP])
AC_LANG_PUSH(C++)
LYX_PROG_CLANG
LYX_LIB_STDCXX
@ -260,8 +261,8 @@ if test x$GXX = xyes; then
AM_CXXFLAGS="-g $AM_CXXFLAGS"
fi
if test $build_type = gprof ; then
AM_CXXFLAGS="-pg $AM_CXXFLAGS"
AM_LDFLAGS="-pg $AM_LDFLAGS"
AM_CXXFLAGS="$AM_CXXFLAGS -pg"
AM_LDFLAGS="$AM_LDFLAGS -pg"
fi
if test $build_type = profiling ; then
AM_CXXFLAGS="$AM_CXXFLAGS -fno-omit-frame-pointer"
@ -274,23 +275,20 @@ if test x$GXX = xyes; then
if test x$enable_warnings = xyes ; then
case $gxx_version in
3.1*|3.2*|3.3*)
AM_CPPFLAGS="-W -Wall $AM_CPPFLAGS"
AM_CPPFLAGS="$AM_CPPFLAGS -Wall -W"
;;
3.4*|4.0*|4.1*|4.2*|4.3*|4.4*|4.5*|4.6*|4.7*|4.8*|clang)
AM_CPPFLAGS="-Wextra -Wall $AM_CPPFLAGS"
AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra"
;;
*)
AM_CPPFLAGS="-Wextra -Wall -Wfloat-conversion $AM_CPPFLAGS"
AM_CPPFLAGS="$AM_CPPFLAGS -Wall -Wextra -Wfloat-conversion"
;;
esac
fi
case $gxx_version in
3.1*) AM_CXXFLAGS="-finline-limit=500 ";;
3.2*|3.3*) AM_CXXFLAGS="";;
3.4*|4.*)
AM_CXXFLAGS=""
test $enable_pch = yes && lyx_pch_comp=yes
;;
3.1*) AM_CXXFLAGS="$AM_CXXFLAGS -finline-limit=500";;
3.2*|3.3*) ;;
*) test $enable_pch = yes && lyx_pch_comp=yes ;;
esac
if test x$enable_stdlib_debug = xyes ; then
dnl FIXME: for clang/libc++, one should define _LIBCPP_DEBUG2=0
@ -322,15 +320,15 @@ if test x$GXX = xyes; then
3.*|4.0*|4.1*|4.2*) AC_ERROR([There is no C++11 support in gcc 3.x]);;
4.3*|4.4*|4.5*|4.6*)
lyx_flags="$lyx_flags c++11-mode"
AM_CXXFLAGS="-std=gnu++0x $AM_CXXFLAGS";;
AM_CXXFLAGS="$AM_CXXFLAGS -std=gnu++0x";;
clang)
dnl presumably all clang version support c++11.
lyx_flags="$lyx_flags c++11-mode"
dnl the deprecated-register warning is very annoying with Qt4.x right now.
AM_CXXFLAGS="-std=c++11 -Wno-deprecated-register $AM_CXXFLAGS";;
AM_CXXFLAGS="$AM_CXXFLAGS -std=c++11 -Wno-deprecated-register";;
*)
lyx_flags="$lyx_flags c++11-mode"
AM_CXXFLAGS="-std=gnu++11 $AM_CXXFLAGS"
AM_CXXFLAGS="$AM_CXXFLAGS -std=gnu++11"
;;
esac
if test x$CLANG = xno || test $lyx_cv_lib_stdcxx = yes; then

10
configure.ac
View File

@ -67,7 +67,17 @@ AM_PATH_PYTHON(2.4.0,, :)
AC_PROG_RANLIB
### Check for a C++ compiler
dnl We have to do weird tricks so that autoconf does not touch CXXFLAGS even
dnl if it is not set. We do not use autoconf defaults.
lyx_has_CXXFLAGS=${CXXFLAGS+yes}
if ! test "$lyx_has_CXXFLAGS" = yes; then
dnl set to a dummy value so that AC_PROG_CXX does not try to set CXXFLAGS
CXXFLAGS=" "
fi
LYX_PROG_CXX
if ! test "$lyx_has_CXXFLAGS" = yes; then
unset CXXFLAGS
fi
AC_LANG(C++)
### Objective-C compiler