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| author | Samuel Holland <samuel@sholland.org> | 2018-01-14 18:40:59 -0600 |
|---|---|---|
| committer | Samuel Holland <samuel@sholland.org> | 2018-01-14 18:57:52 -0600 |
| commit | dfafb0735f09d65a392d03a2d1ad3d0b934981da (patch) | |
| tree | f5a1c49f22df2e72494cd114785763b111d6924a /libgcompat/alias.h | |
| parent | d40369b0e09e4e2228ebff305067ec2d99220848 (diff) | |
| download | gcompat-dfafb0735f09d65a392d03a2d1ad3d0b934981da.tar.gz gcompat-dfafb0735f09d65a392d03a2d1ad3d0b934981da.tar.bz2 gcompat-dfafb0735f09d65a392d03a2d1ad3d0b934981da.tar.xz gcompat-dfafb0735f09d65a392d03a2d1ad3d0b934981da.zip | |
libgcompat: Add and use a macro for defining symbol aliases
* Prefer providing the underscore-prefixed symbol as the strong
definition.
* Do not use a weak alias if the alias is also underscore-prefixed.
* Make libgcompat objects depend on the new header.
[NOTE: I originally took the weak_alias macro from musl's libc.h, but
it's trivial and the same pattern already in use. If desired, I
can add the musl copyright notice.]
Signed-off-by: Samuel Holland <samuel@sholland.org>
Diffstat (limited to 'libgcompat/alias.h')
| -rw-r--r-- | libgcompat/alias.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libgcompat/alias.h b/libgcompat/alias.h new file mode 100644 index 0000000..3f54672 --- /dev/null +++ b/libgcompat/alias.h @@ -0,0 +1,9 @@ +#ifndef _ALIAS_H_ +#define _ALIAS_H_ + +#define alias(old, new) \ + extern __typeof(old) new __attribute__((__alias__(#old))) +#define weak_alias(old, new) \ + extern __typeof(old) new __attribute__((weak, __alias__(#old))) + +#endif /* _ALIAS_H_ */ |