live-bootstrap/sysc/gcc-4.7.4/patches/0004-libstdc-gthr-workaroun...

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SPDX-FileCopyrightText: 2022 Dor Askayo <dor.askayo@gmail.com>
SPDX-FileCopyrightText: 2015 Szabolcs Nagy <szabolcs.nagy@arm.com>
SPDX-License-Identifier: GPL-2.0-or-later
Backported from upstream commit 85da5c3024f731e719c4093314da8edcd1056527
libstdc++ gthr workaround for musl
[libstdc++-v3/]
2015-04-22 Szabolcs Nagy <szabolcs.nagy@arm.com>
* config/os/generic/os_defines.h (_GLIBCXX_GTHREAD_USE_WEAK): Define.
* configure.host (os_include_dir): Set to "os/generic" for linux-musl*.
From-SVN: r222329
--- libstdc++-v3/config/os/generic/os_defines.h
+++ libstdc++-v3/config/os/generic/os_defines.h
@@ -33,4 +33,9 @@
// System-specific #define, typedefs, corrections, etc, go here. This
// file will come before all others.
+// Disable the weak reference logic in gthr.h for os/generic because it
+// is broken on every platform unless there is implementation specific
+// workaround in gthr-posix.h and at link-time for static linking.
+#define _GLIBCXX_GTHREAD_USE_WEAK 0
+
#endif
--- libstdc++-v3/configure.host
+++ libstdc++-v3/configure.host
@@ -242,6 +242,9 @@ case "${host_os}" in
freebsd*)
os_include_dir="os/bsd/freebsd"
;;
+ linux-musl*)
+ os_include_dir="os/generic"
+ ;;
gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
if [ "$uclibc" = "yes" ]; then
os_include_dir="os/uclibc"