diff options
Diffstat (limited to 'contrib/guix/patches')
-rw-r--r-- | contrib/guix/patches/glibc-2.27-no-librt.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/contrib/guix/patches/glibc-2.27-no-librt.patch b/contrib/guix/patches/glibc-2.27-no-librt.patch new file mode 100644 index 0000000000..4f2092ba7e --- /dev/null +++ b/contrib/guix/patches/glibc-2.27-no-librt.patch @@ -0,0 +1,53 @@ +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, |