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M4 C++ flags macros

This commit is contained in:
Rémi Denis-Courmont 2011-05-14 13:53:28 +03:00
parent 1640b6840a
commit 631e9e7f8a
1 changed files with 29 additions and 0 deletions
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29
m4/flags.m4
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@ -37,6 +37,35 @@ AC_DEFUN([RDC_PROG_CC_WFLAGS],
done
])
AC_DEFUN([RDC_PROG_CXX_FLAGS_IFELSE],
[AC_LANG_ASSERT(C++)
CXXFLAGS_save="${CXXFLAGS}"
as_ac_var=`echo "ac_cv_prog_cxx_flags_$1" | $as_tr_sh`
AC_CACHE_CHECK([if $CXX accepts $1], [$as_ac_var], [
CXXFLAGS="${CXXFLAGS} $1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
eval "$as_ac_var=yes"
],[
eval "$as_ac_var=no"
])
])
ac_res=`eval echo '${'$as_ac_var'}'`
CFLAGS="${CFLAGS_save}"
AS_IF([test "${ac_res}" != "no"], [$2], [$3])
])
AC_DEFUN([RDC_PROG_CXX_FLAGS],
[AC_LANG_ASSERT(C++)
RDC_PROG_CXX_FLAGS_IFELSE([$1], [CXXFLAGS="${CXXFLAGS} $1"])
])
AC_DEFUN([RDC_PROG_CXX_WFLAGS],
[ for a in $1; do
RDC_PROG_CXX_FLAGS([-W$a])
done
])
AC_DEFUN([RDC_PROG_LINK_FLAGS_IFELSE],
[AC_LANG_ASSERT(C)
LDFLAGS_save="${LDFLAGS}"