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[libpng16] Make ARM NEON support work at compile time (not just configure time).

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This moves the test on __ARM_NEON__ into pngconf.h to avoid issues when
using a compiler that compiles for multiple architectures at one time.
This commit is contained in:
John Bowler
2013-06-06 12:49:53 -05:00
committed by Glenn Randers-Pehrson
parent 4a43182924
commit aa22442a9c
4 changed files with 12 additions and 8 deletions
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9
scripts/pnglibconf.dfa
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@@ -158,12 +158,6 @@ logunsupported = 1
@# endif
@#endif
# This changes the default for the ARM NEON optimizations according to
# __ARM_NEON__
@#ifdef __ARM_NEON__
@# define PNG_ARM_NEON_SUPPORTED
@#endif
# IN DEVELOPMENT
# These are currently experimental features; define them if you want (NOTE:
# experimental options must be disabled before they are defined in this file!)
@@ -213,12 +207,15 @@ option SET_OPTION disabled
# These options are specific to the ARM NEON hardware optimizations:
#
# ARM_NEON: the optimization itself
# ARM_NEON_NOT: disable the optimization even on systems that apparently support
# it (where the compiler defines __ARM_NEON__).
# ARM_NEON_API: allow the optimization to be switched on with png_set_hardware
# ARM_NEON_CHECK: compile a run-time check to see if Neon extensions are
# supported, this is poorly supported and deprectated - use the
# png_set_hardware API.
option ARM_NEON disabled,
sets FILTER_OPTIMIZATIONS png_init_filter_functions_neon
option ARM_NEON_NOT disabled
option ARM_NEON_API disabled enables SET_OPTION ARM_NEON
option ARM_NEON_CHECK disabled enables ARM_NEON