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From: Adhemerval Zanella <azanella@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/azanella/clang] configure: Fix check for -fno-tree-loop-distribute-patterns Date: Tue, 2 Apr 2024 15:51:54 +0000 (GMT) [thread overview] Message-ID: <20240402155155.0894B385841D@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c241a205b60a2cb2fb3b00ce7bdeb44fa9ceb218 commit c241a205b60a2cb2fb3b00ce7bdeb44fa9ceb218 Author: Fangrui Song <maskray@google.com> 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
next reply other threads:[~2024-04-02 15:51 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-04-02 15:51 Adhemerval Zanella [this message] -- strict thread matches above, loose matches on Subject: below -- 2024-04-17 20:05 Adhemerval Zanella 2024-02-09 17:30 Adhemerval Zanella 2024-02-07 14:05 Adhemerval Zanella 2024-01-29 17:55 Adhemerval Zanella 2023-12-21 18:52 Adhemerval Zanella 2023-09-28 17:50 Adhemerval Zanella
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