ac_libiberty_warn_cflags=
save_CFLAGS="$CFLAGS"
-for option in -W -Wall -Wwrite-strings -Wc++-compat \
+for real_option in -W -Wall -Wwrite-strings -Wc++-compat \
-Wstrict-prototypes; do
+ # Do the check with the no- prefix removed since gcc silently
+ # accepts any -Wno-* option on purpose
+ case $real_option in
+ -Wno-*) option=-W`expr $real_option : '-Wno-\(.*\)'` ;;
+ *) option=$real_option ;;
+ esac
as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports $option" >&5
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }
if test `eval 'as_val=${'$as_acx_Woption'};$as_echo "$as_val"'` = yes; then :
- ac_libiberty_warn_cflags="$ac_libiberty_warn_cflags${ac_libiberty_warn_cflags:+ }$option"
+ ac_libiberty_warn_cflags="$ac_libiberty_warn_cflags${ac_libiberty_warn_cflags:+ }$real_option"
fi
done
CFLAGS="$save_CFLAGS"
+# Do the check with the no- prefix removed from the warning options
+# since gcc silently accepts any -Wno-* option on purpose
if test "$GCC" = yes; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -pedantic " >&5
$as_echo_n "checking whether $CC supports -pedantic ... " >&6; }