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fix shared object build with -fvisibility=hidden

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set WEBP_EXTERN to visibility=default
+ explicitly mark VP8GetCPUInfo as it's referenced within the examples

Change-Id: Ie3d2b15088e888f0b55203b205993eba75899d99
This commit is contained in:
James Zern 2014-09-12 21:07:19 -07:00
parent a4c3a31b8f
commit d1c359ef29
2 changed files with 6 additions and 2 deletions
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2
src/dsp/dsp.h
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@ -100,7 +100,7 @@ typedef enum {
} CPUFeature;
// returns true if the CPU supports the feature.
typedef int (*VP8CPUInfo)(CPUFeature feature);
extern VP8CPUInfo VP8GetCPUInfo;
WEBP_EXTERN(VP8CPUInfo) VP8GetCPUInfo;
//------------------------------------------------------------------------------
// Encoding

6
src/webp/types.h
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@ -38,7 +38,11 @@ typedef long long int int64_t;
#ifndef WEBP_EXTERN
// This explicitly marks library functions and allows for changing the
// signature for e.g., Windows DLL builds.
#define WEBP_EXTERN(type) extern type
# if defined(__GNUC__) && __GNUC__ >= 4
# define WEBP_EXTERN(type) extern __attribute__ ((visibility ("default"))) type
# else
# define WEBP_EXTERN(type) extern type
# endif /* __GNUC__ >= 4 */
#endif /* WEBP_EXTERN */
// Macro to check ABI compatibility (same major revision number)