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build: Add new libbsd_symver_weak() macro

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We will use it for the reworked md5 deprecation logic.
This commit is contained in:
Guillem Jover 2021-11-28 22:34:59 +01:00
parent 1eba406021
commit 500b3080a2
1 changed files with 11 additions and 0 deletions
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11
src/local-link.h
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@ -42,18 +42,29 @@
#define libbsd_symver_variant(alias, symbol, version) \ #define libbsd_symver_variant(alias, symbol, version) \
extern __typeof__(symbol) symbol \ extern __typeof__(symbol) symbol \
__attribute__((__symver__(#alias "@" #version))) __attribute__((__symver__(#alias "@" #version)))
#define libbsd_symver_weak(alias, symbol, version) \
extern __typeof__(symbol) symbol \
__attribute__((__symver__(#alias "@" #version), __weak__))
# else # else
#define libbsd_symver_default(alias, symbol, version) \ #define libbsd_symver_default(alias, symbol, version) \
__asm__(".symver " #symbol "," #alias "@@" #version) __asm__(".symver " #symbol "," #alias "@@" #version)
#define libbsd_symver_variant(alias, symbol, version) \ #define libbsd_symver_variant(alias, symbol, version) \
__asm__(".symver " #symbol "," #alias "@" #version) __asm__(".symver " #symbol "," #alias "@" #version)
#define libbsd_symver_weak(alias, symbol, version) \
libbsd_symver_variant(alias, symbol, version); \
extern __typeof__(symbol) alias \
__attribute__((__weak__))
# endif # endif
#else #else
#define libbsd_symver_default(alias, symbol, version) \ #define libbsd_symver_default(alias, symbol, version) \
extern __typeof__(symbol) alias __attribute__((__alias__(#symbol))) extern __typeof__(symbol) alias __attribute__((__alias__(#symbol)))
#define libbsd_symver_variant(alias, symbol, version) #define libbsd_symver_variant(alias, symbol, version)
#define libbsd_symver_weak(alias, symbol, version)
#endif #endif
#endif #endif