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* configure.in: Search for AUTOCONF unconditionally.

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Just don't complain about missing it under --without-cvs.
	* configure: Regenerated.

	* include/libc-symbols.h (__symbol_set_attribute): New macro,
	give hidden for [SHARED] and weak for [! SHARED].
	(symbol_set_declare): Use that.  Never need weak_extern these days.
	* Makerules ($(common-objpfx)shlib.lds): Go back to using PROVIDE.
	Depend on $(..)Makerules.
This commit is contained in:
Roland McGrath 2003-04-30 04:18:12 +00:00
parent 476e7d78f4
commit 20792f9946
3 changed files with 26 additions and 7 deletions
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12
ChangeLog
View File

@ -1,3 +1,15 @@
2003-04-29 Roland McGrath <roland@redhat.com>
* configure.in: Search for AUTOCONF unconditionally.
Just don't complain about missing it under --without-cvs.
* configure: Regenerated.
* include/libc-symbols.h (__symbol_set_attribute): New macro,
give hidden for [SHARED] and weak for [! SHARED].
(symbol_set_declare): Use that. Never need weak_extern these days.
* Makerules ($(common-objpfx)shlib.lds): Go back to using PROVIDE.
Depend on $(..)Makerules.
2003-04-29 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/ifaddrs.c (getifaddrs): Use __ protected

6
Makerules
View File

@ -511,7 +511,7 @@ endif
ifeq (yes,$(elf))
# binutils only position loadable notes into the first page for binaries,
# not for shared objects
$(common-objpfx)shlib.lds: $(common-objpfx)config.make
$(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
$(LINK.o) -shared -Wl,-O1 \
$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS.so) \
-Wl,--verbose 2>&1 | \
@ -519,9 +519,9 @@ $(common-objpfx)shlib.lds: $(common-objpfx)config.make
-e '/^=========/,/^=========/!d;/^=========/d' \
-e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
-e 's/^.*\*(\.dynbss).*$$/& \
__start___libc_freeres_ptrs = .; \
PROVIDE(__start___libc_freeres_ptrs = .); \
*(__libc_freeres_ptrs) \
__stop___libc_freeres_ptrs = .;/'
PROVIDE(__stop___libc_freeres_ptrs = .);/'
mv -f $@T $@
common-generated += shlib.lds

15
include/libc-symbols.h
View File

@ -345,11 +345,18 @@
be able to use the set's contents. */
# define symbol_set_define(set) symbol_set_declare(set)
/* Declare SET for use in this module, if defined in another module. */
/* Declare SET for use in this module, if defined in another module.
In a shared library, this is always local to that shared object.
For static linking, the set might be wholly absent and so we use
weak references. */
# define symbol_set_declare(set) \
extern void *const __start_##set __attribute__ ((__weak__)); \
extern void *const __stop_##set __attribute__ ((__weak__)); \
weak_extern (__start_##set) weak_extern (__stop_##set)
extern void *const __start_##set __symbol_set_attribute; \
extern void *const __stop_##set __symbol_set_attribute;
# ifdef SHARED
# define __symbol_set_attribute attribute_hidden
# else
# define __symbol_set_attribute __attribute__ ((weak))
# endif
/* Return a pointer (void *const *) to the first element of SET. */
# define symbol_set_first_element(set) (&__start_##set)