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Avoid -Wundef warnings for PNG_ARM_NEON_IMPLEMENTATION

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Define this symbol as 0 instead of leaving it undefined when not using
ARM NEON optimizations.

No real changes, but just avoid a bunch of

"PNG_ARM_NEON_IMPLEMENTATION" is not defined, evaluates to 0 [-Wundef]

warnings when building the library.
This commit is contained in:
Vadim Zeitlin 2020-02-04 22:48:25 +01:00
parent 5668fc8fd6
commit 8cb5f8f158
1 changed files with 2 additions and 0 deletions
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2
pngpriv.h
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@ -185,6 +185,8 @@
/* Use the intrinsics code by default. */
# define PNG_ARM_NEON_IMPLEMENTATION 1
# endif
#else /* PNG_ARM_NEON_OPT == 0 */
# define PNG_ARM_NEON_IMPLEMENTATION 0
#endif /* PNG_ARM_NEON_OPT > 0 */
#ifndef PNG_MIPS_MSA_OPT