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Add OTHER_SHLIB_COMPAT

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It is similar to SHLIB_COMPAT, but allows to check versions from
other libraries.  It is used to move compat symbol from other libraries
to libc.
This commit is contained in:
Adhemerval Zanella 2021-03-19 17:21:05 +00:00
parent 1b53b5d970
commit 4d2e9ef806
1 changed files with 9 additions and 0 deletions
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9
include/shlib-compat.h
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@ -53,6 +53,14 @@
# define SHLIB_COMPAT(lib, introduced, obsoleted) \ # define SHLIB_COMPAT(lib, introduced, obsoleted) \
_LIB_COMPAT (lib, introduced, obsoleted) _LIB_COMPAT (lib, introduced, obsoleted)
/* Like SHLIB_COMPAT, but it can check versions in other libraries. It is
not always false for !IS_IN (LIB). */
#define OTHER_SHLIB_COMPAT(lib, introduced, obsoleted) \
_OTHER_SHLIB_COMPAT (lib, introduced, obsoleted)
#define _OTHER_SHLIB_COMPAT(lib, introduced, obsoleted) \
(!(ABI_##lib##_##obsoleted - 0) \
|| ((ABI_##lib##_##introduced - 0) < (ABI_##lib##_##obsoleted - 0)))
/* That header also defines symbols like `VERSION_libm_GLIBC_2_1' to /* That header also defines symbols like `VERSION_libm_GLIBC_2_1' to
the version set name to use for e.g. symbols first introduced into the version set name to use for e.g. symbols first introduced into
libm in the GLIBC_2.1 version. Definitions of symbols with explicit libm in the GLIBC_2.1 version. Definitions of symbols with explicit
@ -106,6 +114,7 @@
/* Not compiling ELF shared libraries at all, so never any old versions. */ /* Not compiling ELF shared libraries at all, so never any old versions. */
# define SHLIB_COMPAT(lib, introduced, obsoleted) 0 # define SHLIB_COMPAT(lib, introduced, obsoleted) 0
# define OTHER_SHLIB_COMPAT(lib, introduced, obsoleted) 0
/* No versions to worry about, just make this the global definition. */ /* No versions to worry about, just make this the global definition. */
# define versioned_symbol(lib, local, symbol, version) \ # define versioned_symbol(lib, local, symbol, version) \