merge from gcc

This commit is contained in:
DJ Delorie
2006-01-29 20:07:09 +00:00
parent 06d3c8c05c
commit fd7d450d2b
3 changed files with 205 additions and 68 deletions

View File

@@ -113,9 +113,25 @@ GCC_NO_EXECUTABLES
AC_PROG_CC
AC_PROG_CPP_WERROR
# Warn C++ incompatibilities if supported.
AC_CACHE_CHECK(
[whether ${CC} accepts -Wc++-compat],
[ac_cv_prog_cc_w_cxx_compat],
[save_CFLAGS="$CFLAGS"
CFLAGS="-Wc++-compat"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
[ac_cv_prog_cc_w_cxx_compat=yes],
[ac_cv_prog_cc_w_cxx_compat=no])
CFLAGS="$save_CFLAGS"
])
if test x$GCC = xyes; then
ac_libiberty_warn_cflags='-W -Wall -pedantic -Wwrite-strings -Wstrict-prototypes'
fi
if test $ac_cv_prog_cc_w_cxx_compat = yes ; then
ac_libiberty_warn_cflags="${ac_libiberty_warn_cflags} -Wc++-compat"
fi
AC_SUBST(ac_libiberty_warn_cflags)
AC_PROG_CC_C_O