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um: add __weak for exported functions

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If the exported glibc functions don't exist, we get link
failures. Avoid that by adding __weak so they're allowed
to not exist.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Johannes Berg 2023-02-12 20:32:04 +01:00 committed by Richard Weinberger
parent 7e364e5629
commit ce1831fe2f
1 changed files with 1 additions and 1 deletions
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2
arch/um/os-Linux/user_syms.c
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@ -39,7 +39,7 @@ EXPORT_SYMBOL(printf);
* good; so the versions of these symbols will always match
*/
#define EXPORT_SYMBOL_PROTO(sym) \
int sym(void); \
int sym(void) __weak; \
EXPORT_SYMBOL(sym);
extern void readdir64(void) __attribute__((weak));