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-rwxr-xr-xlibcpp/configure6
1 files changed, 3 insertions, 3 deletions
diff --git a/libcpp/configure b/libcpp/configure
index 0ada4e954a1..7ea42c54787 100755
--- a/libcpp/configure
+++ b/libcpp/configure
@@ -4693,7 +4693,7 @@ for real_option in -W -Wall -Wno-narrowing -Wwrite-strings \
# 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-\(.*\)'` ;;
+ -Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;;
*) option=$real_option ;;
esac
as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
@@ -4739,7 +4739,7 @@ for real_option in -Wstrict-prototypes -Wmissing-prototypes \
# 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-\(.*\)'` ;;
+ -Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;;
*) option=$real_option ;;
esac
as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
@@ -4824,7 +4824,7 @@ for real_option in -fno-exceptions -fno-rtti; 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-\(.*\)'` ;;
+ -Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;;
*) option=$real_option ;;
esac
as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`