From cf5a60020e18aeb3723713a33bb274f6d7157a08 Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Mon, 19 Dec 2011 13:20:23 +0000 Subject: Check for warning flags without no- prefix config/: * warnings.m4 (ACX_PROG_CC_WARNING_OPTS) (ACX_PROG_CC_WARNING_ALMOST_PEDANTIC): Run the test without the no- prefix. libdecnumber/: * configure: Regenerate. libiberty/: * configure: Regenerate. --- config/ChangeLog | 6 ++++++ config/warnings.m4 | 24 +++++++++++++++++------- libiberty/ChangeLog | 4 ++++ libiberty/configure | 12 ++++++++++-- 4 files changed, 37 insertions(+), 9 deletions(-) diff --git a/config/ChangeLog b/config/ChangeLog index da5fe51aec..2d06a8d6be 100644 --- a/config/ChangeLog +++ b/config/ChangeLog @@ -1,3 +1,9 @@ +2011-12-19 Andreas Schwab + + * warnings.m4 (ACX_PROG_CC_WARNING_OPTS) + (ACX_PROG_CC_WARNING_ALMOST_PEDANTIC): Run the test without the + no- prefix. + 2011-12-18 Eric Botcazou * acx.m4 (Test for GNAT): Update comment and add quotes in final test. diff --git a/config/warnings.m4 b/config/warnings.m4 index 3801c856be..292e5a471a 100644 --- a/config/warnings.m4 +++ b/config/warnings.m4 @@ -1,6 +1,6 @@ # Autoconf include file defining macros related to compile-time warnings. -# Copyright 2004, 2005, 2007, 2009 Free Software Foundation, Inc. +# Copyright 2004, 2005, 2007, 2009, 2011 Free Software Foundation, Inc. #This file is part of GCC. @@ -28,7 +28,13 @@ AC_SUBST(acx_Var)dnl m4_expand_once([acx_Var= ],m4_quote(acx_Var=))dnl save_CFLAGS="$CFLAGS" -for option in $1; do +for real_option in $1; 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=$real_option ;; + esac AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option]) AC_CACHE_CHECK([whether $CC supports $option], acx_Woption, [CFLAGS="$option" @@ -37,14 +43,14 @@ for option in $1; do [AS_VAR_SET(acx_Woption, no)]) ]) AS_IF([test AS_VAR_GET(acx_Woption) = yes], - [acx_Var="$acx_Var${acx_Var:+ }$option"]) + [acx_Var="$acx_Var${acx_Var:+ }$real_option"]) AS_VAR_POPDEF([acx_Woption])dnl done CFLAGS="$save_CFLAGS" m4_popdef([acx_Var])dnl ])# ACX_PROG_CC_WARNING_OPTS -# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC) +# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC]) # Append to VARIABLE "-pedantic" + the argument, if the compiler is GCC # and accepts all of those options simultaneously, otherwise to nothing. AC_DEFUN([ACX_PROG_CC_WARNING_ALMOST_PEDANTIC], @@ -53,11 +59,14 @@ m4_pushdef([acx_Var], [m4_default([$2], [WARN_PEDANTIC])])dnl AC_SUBST(acx_Var)dnl m4_expand_once([acx_Var= ],m4_quote(acx_Var=))dnl -AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_$1])dnl +# Do the check with the no- prefix removed from the warning options +# since gcc silently accepts any -Wno-* option on purpose +m4_pushdef([acx_Woptions], [m4_bpatsubst([$1], [-Wno-], [-W])])dnl +AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_]acx_Woptions)dnl AS_IF([test "$GCC" = yes], -[AC_CACHE_CHECK([whether $CC supports -pedantic $1], acx_Pedantic, +[AC_CACHE_CHECK([whether $CC supports -pedantic ]acx_Woptions, acx_Pedantic, [save_CFLAGS="$CFLAGS" -CFLAGS="-pedantic $1" +CFLAGS="-pedantic acx_Woptions" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])], [AS_VAR_SET(acx_Pedantic, yes)], [AS_VAR_SET(acx_Pedantic, no)]) @@ -66,6 +75,7 @@ AS_IF([test AS_VAR_GET(acx_Pedantic) = yes], [acx_Var="$acx_Var${acx_Var:+ }-pedantic $1"]) ]) AS_VAR_POPDEF([acx_Pedantic])dnl +m4_popdef([acx_Woptions])dnl m4_popdef([acx_Var])dnl ])# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog index a269a0efed..cab1f97514 100644 --- a/libiberty/ChangeLog +++ b/libiberty/ChangeLog @@ -1,3 +1,7 @@ +2011-12-19 Andreas Schwab + + * configure: Regenerate. + 2011-11-07 Richard Henderson Merged from transactional-memory. diff --git a/libiberty/configure b/libiberty/configure index c798937dee..d26c8b5f5b 100755 --- a/libiberty/configure +++ b/libiberty/configure @@ -3920,8 +3920,14 @@ ac_c_preproc_warn_flag=yes ac_libiberty_warn_cflags= save_CFLAGS="$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 $option" >&5 @@ -3953,11 +3959,13 @@ eval ac_res=\$$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 : - 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; } -- cgit v1.2.1