From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1791) id 7B2003858D37; Wed, 17 Apr 2024 20:05:49 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7B2003858D37 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1713384349; bh=wRxAKkkbMTbX5dokZjOUXpfaBR52D7epazP/jPp57bk=; h=From:To:Subject:Date:From; b=KtwU/Yuak+twlv6J/yItDiV8vJBkcrE6jbS3cbffGQLYBFj40CdCu5dRIDyNrmFND 2V4OxaSe1CgSq2NsHmudwOstQm3t+n4oe4/cE5tf4555ZrL8516grO2NhiOMr7ESot f7+5DoxUt9Iu7RXI872o4oPaq0HJZCkBcoo0iS9c= 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: Fix check for -fno-tree-loop-distribute-patterns X-Act-Checkin: glibc X-Git-Author: Fangrui Song X-Git-Refname: refs/heads/azanella/clang X-Git-Oldrev: e4dfd4cc55f12243865ad94941c63aafb92c57a9 X-Git-Newrev: d2161cbdbb438f7a167024e41711fb7775ef3fd1 Message-Id: <20240417200549.7B2003858D37@sourceware.org> Date: Wed, 17 Apr 2024 20:05:49 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d2161cbdbb438f7a167024e41711fb7775ef3fd1 commit d2161cbdbb438f7a167024e41711fb7775ef3fd1 Author: Fangrui Song Date: Sun Sep 26 00:15:23 2021 -0700 configure: Fix check for -fno-tree-loop-distribute-patterns clang does not support -fno-tree-loop-distribute-patterns and using on __attribute__ ((__optimize__ (...))) only triggers a warning with AC_TRY_COMMAND. Add -Werror so the tests fails if compiler does not support it. Diff: --- configure | 2 +- configure.ac | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/configure b/configure index c18fb48ba5..85136296bf 100755 --- a/configure +++ b/configure @@ -7280,7 +7280,7 @@ __attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns"))) foo (void) {} EOF libc_cv_cc_loop_to_function=no -if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c' +if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -c conftest.c' { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 (eval $ac_try) 2>&5 ac_status=$? diff --git a/configure.ac b/configure.ac index 55e131f9dd..1260c2189d 100644 --- a/configure.ac +++ b/configure.ac @@ -1442,7 +1442,7 @@ __attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns"))) foo (void) {} EOF libc_cv_cc_loop_to_function=no -if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c]) +if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Werror -c conftest.c]) then libc_cv_cc_loop_to_function=yes fi