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Improve compiler flag checking

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This commit is contained in:
John Levon
2009-01-14 15:23:26 +00:00
parent 37abbb387e
commit d052118dae
3 changed files with 22 additions and 21 deletions
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18
acinclude.m4
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@@ -45,21 +45,9 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
;;
esac
compiler_flags=
COMPILER_FLAGS=
for option in $try_compiler_flags; do
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $option"
AC_MSG_CHECKING([whether gcc understands $option])
AC_TRY_LINK([], [],
has_option=yes,
has_option=no,)
CFLAGS="$SAVE_CFLAGS"
AC_MSG_RESULT($has_option)
if test $has_option = yes; then
compiler_flags="$compiler_flags $option"
fi
unset has_option
unset SAVE_CFLAGS
gl_COMPILER_FLAGS($option)
done
unset option
unset try_compiler_flags
@@ -85,7 +73,7 @@ AC_DEFUN([LIBVIRT_COMPILE_WARNINGS],[
fi
AC_MSG_RESULT($complCFLAGS)
WARN_CFLAGS="$compiler_flags $complCFLAGS"
WARN_CFLAGS="$COMPILER_FLAGS $complCFLAGS"
AC_SUBST(WARN_CFLAGS)
dnl Needed to keep compile quiet on python 2.4