From 095af58f2c2f45926912ab8d30195e4ca0d69462 Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Mon, 19 Dec 2011 13:12:26 +0000 Subject: Check for warning flags without no- prefix config/: PR bootstrap/51388 * warnings.m4 (ACX_PROG_CC_WARNING_OPTS) (ACX_PROG_CC_WARNING_ALMOST_PEDANTIC): Run the test without the no- prefix. fixincludes/: * configure: Regenerate. gcc/: * configure: Regenerate. libcpp/: * configure: Regenerate. libdecnumber/: * configure: Regenerate. libiberty/: * configure: Regenerate. lto-plugin/: * configure: Regenerate. From-SVN: r182478 --- libcpp/configure | 50 +++++++++++++++++++++++++++++++++++--------------- 1 file changed, 35 insertions(+), 15 deletions(-) (limited to 'libcpp/configure') diff --git a/libcpp/configure b/libcpp/configure index 803daae..0ada4e9 100755 --- a/libcpp/configure +++ b/libcpp/configure @@ -4688,8 +4688,14 @@ test -n "$AUTOHEADER" || AUTOHEADER="$MISSING autoheader" warn= save_CFLAGS="$CFLAGS" -for option in -W -Wall -Wno-narrowing -Wwrite-strings \ +for real_option in -W -Wall -Wno-narrowing -Wwrite-strings \ -Wmissing-format-attribute; 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 $option" >&5 @@ -4721,15 +4727,21 @@ eval ac_res=\$$as_acx_Woption { $as_echo "$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 : - warn="$warn${warn:+ }$option" + warn="$warn${warn:+ }$real_option" fi done CFLAGS="$save_CFLAGS" c_warn= save_CFLAGS="$CFLAGS" -for option in -Wstrict-prototypes -Wmissing-prototypes \ +for real_option in -Wstrict-prototypes -Wmissing-prototypes \ -Wold-style-definition -Wc++-compat; 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 $option" >&5 @@ -4761,20 +4773,22 @@ eval ac_res=\$$as_acx_Woption { $as_echo "$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 : - c_warn="$c_warn${c_warn:+ }$option" + c_warn="$c_warn${c_warn:+ }$real_option" fi done CFLAGS="$save_CFLAGS" WARN_PEDANTIC= +# Do the check with the no- prefix removed from the warning options +# since gcc silently accepts any -Wno-* option on purpose if test "$GCC" = yes; then : - { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -pedantic -Wno-long-long" >&5 -$as_echo_n "checking whether $CC supports -pedantic -Wno-long-long... " >&6; } -if test "${acx_cv_prog_cc_pedantic__Wno_long_long+set}" = set; then : + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -pedantic -Wlong-long" >&5 +$as_echo_n "checking whether $CC supports -pedantic -Wlong-long... " >&6; } +if test "${acx_cv_prog_cc_pedantic__Wlong_long+set}" = set; then : $as_echo_n "(cached) " >&6 else save_CFLAGS="$CFLAGS" -CFLAGS="-pedantic -Wno-long-long" +CFLAGS="-pedantic -Wlong-long" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ @@ -4787,16 +4801,16 @@ main () } _ACEOF if ac_fn_c_try_compile "$LINENO"; then : - acx_cv_prog_cc_pedantic__Wno_long_long=yes + acx_cv_prog_cc_pedantic__Wlong_long=yes else - acx_cv_prog_cc_pedantic__Wno_long_long=no + acx_cv_prog_cc_pedantic__Wlong_long=no fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext CFLAGS="$save_CFLAGS" fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $acx_cv_prog_cc_pedantic__Wno_long_long" >&5 -$as_echo "$acx_cv_prog_cc_pedantic__Wno_long_long" >&6; } -if test $acx_cv_prog_cc_pedantic__Wno_long_long = yes; then : +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $acx_cv_prog_cc_pedantic__Wlong_long" >&5 +$as_echo "$acx_cv_prog_cc_pedantic__Wlong_long" >&6; } +if test $acx_cv_prog_cc_pedantic__Wlong_long = yes; then : WARN_PEDANTIC="$WARN_PEDANTIC${WARN_PEDANTIC:+ }-pedantic -Wno-long-long" fi @@ -4806,7 +4820,13 @@ fi # Disable exceptions and RTTI if building with g++ noexception_flags= save_CFLAGS="$CFLAGS" -for option in -fno-exceptions -fno-rtti; do +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-\(.*\)'` ;; + *) 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 $option" >&5 @@ -4838,7 +4858,7 @@ eval ac_res=\$$as_acx_Woption { $as_echo "$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 : - noexception_flags="$noexception_flags${noexception_flags:+ }$option" + noexception_flags="$noexception_flags${noexception_flags:+ }$real_option" fi done CFLAGS="$save_CFLAGS" -- cgit v1.1