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win32: provide separate macros for weak decls and definitions

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mingw32 seems to want the declaration to also carry the weak attribute.
Strangely, gcc on Linux absolutely does not want the declaration to be marked
as weak.  This may not be the right fix, but it seems to do the trick.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori 2012-08-14 22:17:36 -05:00
parent d1186a33ef
commit 76b64a7aa8
5 changed files with 21 additions and 5 deletions
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6
compiler.h
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@ -45,7 +45,13 @@
# define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
# define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
# endif
#if defined(_WIN32)
#define GCC_WEAK __attribute__((weak))
#define GCC_WEAK_DECL GCC_WEAK
#else
#define GCC_WEAK __attribute__((weak))
#define GCC_WEAK_DECL
#endif
#else
#define GCC_ATTR /**/
#define GCC_FMT_ATTR(n, m)