mirror of https://github.com/bitcoin/bitcoin
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
2.0 KiB
54 lines
2.0 KiB
This patch can be dropped when we are building with glibc 2.30+.
|
|
|
|
commit 6e41ef56c9baab719a02f1377b1e7ce7bff61e73
|
|
Author: Florian Weimer <fweimer@redhat.com>
|
|
Date: Fri Feb 8 10:21:56 2019 +0100
|
|
|
|
rt: Turn forwards from librt to libc into compat symbols [BZ #24194]
|
|
|
|
As the result of commit 6e6249d0b461b952d0f544792372663feb6d792a
|
|
("BZ#14743: Move clock_* symbols from librt to libc."), in glibc 2.17,
|
|
clock_gettime, clock_getres, clock_settime, clock_getcpuclockid,
|
|
clock_nanosleep were added to libc, and the file rt/clock-compat.c
|
|
was added with forwarders to the actual implementations in libc.
|
|
These forwarders were wrapped in
|
|
|
|
#if SHLIB_COMPAT (librt, GLIBC_2_2, GLIBC_2_17)
|
|
|
|
so that they are not present for newer architectures (such as
|
|
powerpc64le) with a 2.17 or later ABI baseline. But the forwarders
|
|
were not marked as compatibility symbols. As a result, on older
|
|
architectures, historic configure checks such as
|
|
|
|
AC_CHECK_LIB(rt, clock_gettime)
|
|
|
|
still cause linking against librt, even though this is completely
|
|
unnecessary. It also creates a needless porting hazard because
|
|
architectures behave differently when it comes to symbol availability.
|
|
|
|
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
|
|
|
|
diff --git a/rt/clock-compat.c b/rt/clock-compat.c
|
|
index f816973c05..11e71aa890 100644
|
|
--- a/rt/clock-compat.c
|
|
+++ b/rt/clock-compat.c
|
|
@@ -30,14 +30,16 @@
|
|
#if HAVE_IFUNC
|
|
# undef INIT_ARCH
|
|
# define INIT_ARCH()
|
|
-# define COMPAT_REDIRECT(name, proto, arglist) libc_ifunc (name, &__##name)
|
|
+# define COMPAT_REDIRECT(name, proto, arglist) libc_ifunc (name, &__##name) \
|
|
+ compat_symbol (librt, name, name, GLIBC_2_2);
|
|
#else
|
|
# define COMPAT_REDIRECT(name, proto, arglist) \
|
|
int \
|
|
name proto \
|
|
{ \
|
|
return __##name arglist; \
|
|
- }
|
|
+ } \
|
|
+ compat_symbol (librt, name, name, GLIBC_2_2);
|
|
#endif
|
|
|
|
COMPAT_REDIRECT (clock_getres,
|