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[PATCH] rt: Turn forwards from librt to libc into compatibility symbols
- From: Florian Weimer <fweimer at redhat dot com>
- To: libc-alpha at sourceware dot org
- Date: Thu, 07 Feb 2019 17:56:23 +0100
- Subject: [PATCH] rt: Turn forwards from librt to libc into compatibility symbols
Without this change, a typical configure check looking for a
library that contains (say) clock_gettime will find and link
against librt, even though nothing in the program might actually
require librt after the move of clock_gettime from librt to libc.
Tested on x86-64, with and without --disable-multi-arch.
2019-02-07 Florian Weimer <fweimer@redhat.com>
* rt/clock-compat.c (COMPAT_REDIRECT): Turn librt forwarders into
compatibility symbols.
diff --git a/rt/clock-compat.c b/rt/clock-compat.c
index c603f40b69..d8ced3cdc1 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,