From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2116) id 0B5333858D35; Mon, 6 Nov 2023 23:11:58 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0B5333858D35 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1699312318; bh=5iMCHCef9FO/cEcrtN9CW+LkEQkdphlkx9fxXhOx6tM=; h=From:To:Subject:Date:From; b=CCchU1tWoUVWd4nEwroF91ewHggrNkrBvOL8V8oKYSlN/Jdx4GWD+PQDmsch6N4/s 3Yvtg5DWdDGY7sMgGAtM9sBr+O+tVB9z1dLYCoBo0jKpsYVU9c1JRzetqRHGtVLDV1 /Hg3HTopV1HjJJc9ReOIJnsHKy+pud0iZqLCf0d0= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Ian Lance Taylor To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r14-5173] libstdc++: use -D_GNU_SOURCE when building libbacktrace X-Act-Checkin: gcc X-Git-Author: Ian Lance Taylor X-Git-Refname: refs/heads/master X-Git-Oldrev: 471fb6ee435034c6635576fb92c325420f007804 X-Git-Newrev: 2b64e4a54042fb8f75f1c1429eb1c13afb9fa118 Message-Id: <20231106231158.0B5333858D35@sourceware.org> Date: Mon, 6 Nov 2023 23:11:58 +0000 (GMT) List-Id: https://gcc.gnu.org/g:2b64e4a54042fb8f75f1c1429eb1c13afb9fa118 commit r14-5173-g2b64e4a54042fb8f75f1c1429eb1c13afb9fa118 Author: Ian Lance Taylor Date: Mon Nov 6 15:09:18 2023 -0800 libstdc++: use -D_GNU_SOURCE when building libbacktrace PR libbacktrace/111315 PR libbacktrace/112263 * acinclude.m4: Set -D_GNU_SOURCE in BACKTRACE_CPPFLAGS and when grepping link.h for dl_iterate_phdr. * configure: Regenerate. Diff: --- libstdc++-v3/acinclude.m4 | 5 ++++- libstdc++-v3/configure | 5 ++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 654b99e92d7..77569d5bb59 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -5443,7 +5443,7 @@ AC_DEFUN([GLIBCXX_ENABLE_BACKTRACE], [ # Most of this is adapted from libsanitizer/configure.ac - BACKTRACE_CPPFLAGS= + BACKTRACE_CPPFLAGS="-D_GNU_SOURCE" # libbacktrace only needs atomics for int, which we've already tested if test "$glibcxx_cv_atomic_int" = "yes"; then @@ -5471,8 +5471,11 @@ AC_DEFUN([GLIBCXX_ENABLE_BACKTRACE], [ have_dl_iterate_phdr=no else # When built as a GCC target library, we can't do a link test. + ac_save_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE" AC_EGREP_HEADER([dl_iterate_phdr], [link.h], [have_dl_iterate_phdr=yes], [have_dl_iterate_phdr=no]) + CPPFLAGS="$ac_save_CPPFLAGS" fi if test "$have_dl_iterate_phdr" = "yes"; then BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_DL_ITERATE_PHDR=1" diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure index a4b12de1f8a..155faf51922 100755 --- a/libstdc++-v3/configure +++ b/libstdc++-v3/configure @@ -73299,7 +73299,7 @@ fi # Most of this is adapted from libsanitizer/configure.ac - BACKTRACE_CPPFLAGS= + BACKTRACE_CPPFLAGS="-D_GNU_SOURCE" # libbacktrace only needs atomics for int, which we've already tested if test "$glibcxx_cv_atomic_int" = "yes"; then @@ -73382,6 +73382,8 @@ done have_dl_iterate_phdr=no else # When built as a GCC target library, we can't do a link test. + ac_save_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include @@ -73395,6 +73397,7 @@ else fi rm -f conftest* + CPPFLAGS="$ac_save_CPPFLAGS" fi if test "$have_dl_iterate_phdr" = "yes"; then BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_DL_ITERATE_PHDR=1"