diff options
Diffstat (limited to 'gnu/packages/patches/gcc-11-libstdc++-hurd-libpthread.patch')
| -rw-r--r-- | gnu/packages/patches/gcc-11-libstdc++-hurd-libpthread.patch | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/gnu/packages/patches/gcc-11-libstdc++-hurd-libpthread.patch b/gnu/packages/patches/gcc-11-libstdc++-hurd-libpthread.patch new file mode 100644 index 0000000000..1845583ac5 --- /dev/null +++ b/gnu/packages/patches/gcc-11-libstdc++-hurd-libpthread.patch @@ -0,0 +1,62 @@ +From f0065f207cf19cd960b33d961472c6d69514336f Mon Sep 17 00:00:00 2001 +From: Samuel Thibault <samuel.thibault@gnu.org> +Date: Fri, 7 Oct 2022 22:45:06 +0200 +Subject: [PATCH] libstdc++: Mark pieces of gnu-linux/os_support.h + linux-specific + +This is notably needed because in glibc 2.34, the move of pthread functions +into libc.so happened for Linux only, not GNU/Hurd. + +The pthread_self() function can also always be used fine as it is on +GNU/Hurd. + +libstdc++-v3/ChangeLog: + + * config/os/gnu-linux/os_defines.h [!__linux__] + (_GLIBCXX_NATIVE_THREAD_ID, _GLIBCXX_GTHREAD_USE_WEAK): Do not define. + +Reviewed-by: Jonathan Wakely <jwakely@redhat.com> +--- + libstdc++-v3/config/os/gnu-linux/os_defines.h | 22 +++++++++++-------- + 1 file changed, 13 insertions(+), 9 deletions(-) + +diff --git a/libstdc++-v3/config/os/gnu-linux/os_defines.h b/libstdc++-v3/config/os/gnu-linux/os_defines.h +index 3064f8d908ac2..87317031fcd71 100644 +--- a/libstdc++-v3/config/os/gnu-linux/os_defines.h ++++ b/libstdc++-v3/config/os/gnu-linux/os_defines.h +@@ -60,22 +60,26 @@ + # define _GLIBCXX_HAVE_FLOAT128_MATH 1 + #endif + +-#if __GLIBC_PREREQ(2, 27) ++#ifdef __linux__ ++// The following libpthread properties only apply to Linux, not GNU/Hurd. ++ ++# if __GLIBC_PREREQ(2, 27) + // Since glibc 2.27 pthread_self() is usable without linking to libpthread. +-# define _GLIBCXX_NATIVE_THREAD_ID pthread_self() +-#else ++# define _GLIBCXX_NATIVE_THREAD_ID pthread_self() ++# else + // Before then it was in libc.so.6 but not libc.a, and always returns 0, + // which breaks the invariant this_thread::get_id() != thread::id{}. + // So only use it if we know the libpthread version is available. + // Otherwise use (__gthread_t)1 as the ID of the main (and only) thread. +-# define _GLIBCXX_NATIVE_THREAD_ID \ +- (__gthread_active_p() ? __gthread_self() : (__gthread_t)1) +-#endif ++# define _GLIBCXX_NATIVE_THREAD_ID \ ++ (__gthread_active_p() ? __gthread_self() : (__gthread_t)1) ++# endif + +-#if __GLIBC_PREREQ(2, 34) ++# if __GLIBC_PREREQ(2, 34) + // Since glibc 2.34 all pthreads functions are usable without linking to + // libpthread. +-# define _GLIBCXX_GTHREAD_USE_WEAK 0 +-#endif ++# define _GLIBCXX_GTHREAD_USE_WEAK 0 ++# endif ++#endif // __linux__ + + #endif |