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glibc: restore "weak_hidden_alias" macro for older glibc versions

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The fstat,lstat,stat,mknod stubs used to build older (before v2.33)
glibc versions depend on the weak_hidden_alias macro.  It was removed
from the glibc libc-symbols header, so patch it back in for the older
builds.
This commit is contained in:
Pat Tullmann 2023-10-22 23:02:24 -07:00 • committed by Andrew Kelley
parent 5293bdfe63
commit d8fffee3fb
1 changed files with 12 additions and 0 deletions
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12
lib/libc/glibc/include/libc-symbols.h vendored
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@ -155,6 +155,18 @@
extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))) \
__attribute_copy__ (name);
/* Zig patch. weak_hidden_alias was removed from glibc v2.36 (v2.37?), Zig
needs it for the v2.32 and earlier {f,l,}stat wrappers, so only include
in this header for 2.32 and earlier. */
#if (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 32) || __GLIBC__ < 2
# define weak_hidden_alias(name, aliasname) \
_weak_hidden_alias (name, aliasname)
# define _weak_hidden_alias(name, aliasname) \
extern __typeof (name) aliasname \
__attribute__ ((weak, alias (#name), __visibility__ ("hidden"))) \
__attribute_copy__ (name);
#endif
/* Declare SYMBOL as weak undefined symbol (resolved to 0 if not defined). */
# define weak_extern(symbol) _weak_extern (weak symbol)
# define _weak_extern(expr) _Pragma (#expr)