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cpu.h: Fix compiler detection 

GCC version 4.6 was throwing an error on `__has_attribute` which
seems to be Clang specific. Solution was to un-nest the CPP code
so that Clang is confirmed before the `__has_attribute` is hit.
This commit is contained in:
Erik de Castro Lopo 2017-02-15 18:22:23 +11:00
parent 3a7884bf53
commit c4bdd6fd7d
1 changed files with 2 additions and 2 deletions
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4
src/libFLAC/include/private/cpu.h
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@ -88,7 +88,7 @@
#define FLAC__AVX2_SUPPORTED 1
#define FLAC__FMA_SUPPORTED 1
#endif
#elif defined __GNUC__ || defined __clang__
#elif defined __GNUC__ && defined __clang__
#if defined __clang__ && __has_attribute(__target__) /* clang */
#define FLAC__SSE_TARGET(x) __attribute__ ((__target__ (x)))
#if __has_builtin(__builtin_ia32_maxps)
@ -106,7 +106,7 @@
#if __has_builtin(__builtin_ia32_pabsd256)
#define FLAC__AVX2_SUPPORTED 1
#endif
#elif !defined __clang__ && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)) /* GCC 4.9+ */
#elif defined (__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)) /* GCC 4.9+ */
#define FLAC__SSE_TARGET(x) __attribute__ ((__target__ (x)))
#define FLAC__SSE_SUPPORTED 1
#define FLAC__SSE2_SUPPORTED 1