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| author | Florian Weimer <fweimer@redhat.com> | 2021-07-12 18:43:32 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2021-07-12 18:43:32 +0200 |
| commit | aaacde11f2e814814fdd19dfb683e76f1dede4d5 (patch) | |
| tree | 6521bf547f60de04b02c84e542e87daccb4636e9 /sysdeps/unix/sysv/linux/Makefile | |
| parent | 8235f9311bddbe4cf8ff1fa8f72f41aa77e27e00 (diff) | |
| download | glibc-aaacde11f2e814814fdd19dfb683e76f1dede4d5.tar glibc-aaacde11f2e814814fdd19dfb683e76f1dede4d5.tar.gz glibc-aaacde11f2e814814fdd19dfb683e76f1dede4d5.tar.bz2 glibc-aaacde11f2e814814fdd19dfb683e76f1dede4d5.zip | |
Reduce <limits.h> pollution due to dynamic PTHREAD_STACK_MIN
<limits.h> used to be a header file with no declarations.
GCC's libgomp includes it in a #pragma GCC visibility hidden block.
Including <unistd.h> from <limits.h> (indirectly) declares everything
in <unistd.h> with hidden visibility, resulting in linker failures.
This commit avoids C declarations in assembler mode and only declares
__sysconf in <limits.h> (and not the entire contents of <unistd.h>).
The __sysconf symbol is already part of the ABI. PTHREAD_STACK_MIN
is no longer defined for __USE_DYNAMIC_STACK_SIZE && __ASSEMBLER__
because there is no possible definition.
Additionally, PTHREAD_STACK_MIN is now defined by <pthread.h> for
__USE_MISC because this is what developers expect based on the macro
name. It also helps to avoid libgomp linker failures in GCC because
libgomp includes <pthread.h> before its visibility hacks.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/Makefile')
| -rw-r--r-- | sysdeps/unix/sysv/linux/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 7d43dc95f2..8257e5b548 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -109,7 +109,7 @@ sysdep_headers += sys/mount.h sys/acct.h \ bits/types/struct_semid64_ds_helper.h \ bits/types/struct_shmid64_ds.h \ bits/types/struct_shmid64_ds_helper.h \ - bits/pthread_stack_min.h + bits/pthread_stack_min.h bits/pthread_stack_min-dynamic.h tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \ tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \ |