From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1791) id E54C33952506; Thu, 28 Sep 2023 17:49:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E54C33952506 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1695923365; bh=Y0Ww1rshi3GqxAh0HdQpAmbXefjCBa9disetwv2fA2E=; h=From:To:Subject:Date:From; b=ur0ArmylvVe9IXg3t2wVEJJgGLKIuj03XJWmaprx0SLuSyDLrpQdLmva1nPbefhQ6 F43PCFdw7VXS6Ty+L1idaXLS5Nu4FtXFJlPXidIxjCdtC6ZgmOEIbQp6LG6nZR8CoD kQTrU1PhL7MRq2mYJlTwVygY3Pe3Mdi+fJS+XVWQ= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Adhemerval Zanella To: glibc-cvs@sourceware.org Subject: [glibc/azanella/clang] configure: Use -Wno-maybe-uninitialized iff compiler supports it X-Act-Checkin: glibc X-Git-Author: Adhemerval Zanella X-Git-Refname: refs/heads/azanella/clang X-Git-Oldrev: eefa33554e559d1ec3687e31463d4cba6dd45277 X-Git-Newrev: ed5dc493c8d6817b642e2337a4488985cf046886 Message-Id: <20230928174925.E54C33952506@sourceware.org> Date: Thu, 28 Sep 2023 17:49:25 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ed5dc493c8d6817b642e2337a4488985cf046886 commit ed5dc493c8d6817b642e2337a4488985cf046886 Author: Adhemerval Zanella Date: Thu Mar 10 16:40:29 2022 -0300 configure: Use -Wno-maybe-uninitialized iff compiler supports it clang does not support the flag. Diff: --- configure | 24 ++++++++++++++++++++++++ configure.ac | 8 ++++++++ timezone/Makefile | 2 +- 3 files changed, 33 insertions(+), 1 deletion(-) diff --git a/configure b/configure index eeb3ef49b8..45ee893d49 100755 --- a/configure +++ b/configure @@ -7194,6 +7194,30 @@ printf "%s\n" "$libc_cv_wno_ignored_attributes" >&6; } config_vars="$config_vars config-cflags-wno-ignored-attributes = $libc_cv_wno_ignored_attributes" +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for -Wno-maybe-uninitialized" >&5 +printf %s "checking for -Wno-maybe-uninitialized... " >&6; } +if test ${libc_cv_wno_maybe_uninitialized+y} +then : + printf %s "(cached) " >&6 +else $as_nop + if { ac_try='${CC-cc} -Werror -Wno-maybe-uninitialized -xc /dev/null -S -o /dev/null' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } +then : + libc_cv_wno_maybe_uninitialized=-Wno-maybe-uninitialized +else $as_nop + libc_cv_wno_maybe_uninitialized= +fi + +fi +{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_wno_maybe_uninitialized" >&5 +printf "%s\n" "$libc_cv_wno_maybe_uninitialized" >&6; } +config_vars="$config_vars +config-cflags-wno-maybe-uninitialized = $libc_cv_wno_maybe_uninitialized" + { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether cc puts quotes around section names" >&5 printf %s "checking whether cc puts quotes around section names... " >&6; } if test ${libc_cv_have_section_quotes+y} diff --git a/configure.ac b/configure.ac index 6601331a06..7a7fe4a28a 100644 --- a/configure.ac +++ b/configure.ac @@ -1394,6 +1394,14 @@ rm -f conftest*]) LIBC_CONFIG_VAR([config-cflags-wno-ignored-attributes], [$libc_cv_wno_ignored_attributes]) +AC_CACHE_CHECK([for -Wno-maybe-uninitialized], libc_cv_wno_maybe_uninitialized, [dnl + LIBC_TRY_CC_OPTION([-Werror -Wno-maybe-uninitialized], + [libc_cv_wno_maybe_uninitialized=-Wno-maybe-uninitialized], + [libc_cv_wno_maybe_uninitialized=]) +]) +LIBC_CONFIG_VAR([config-cflags-wno-maybe-uninitialized], + [$libc_cv_wno_maybe_uninitialized]) + AC_CACHE_CHECK(whether cc puts quotes around section names, libc_cv_have_section_quotes, [cat > conftest.c <