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[libpng16] Mention cmake "PNG_HARDWARE_OPTIMIZATIONS" in INSTALL

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Glenn Randers-Pehrson 2017-07-08 19:25:08 -05:00
parent f16c3406cd
commit 2b80b401be
1 changed files with 10 additions and 0 deletions
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INSTALL
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@ -319,6 +319,16 @@ or via compiler-command options such as
CPPFLAGS += "-DPNG_ARM_NEON_OPT=0, -DPNG_MIPS_MSA_OPT=0, CPPFLAGS += "-DPNG_ARM_NEON_OPT=0, -DPNG_MIPS_MSA_OPT=0,
-DPNG_INTEL_SSE_OPT=0, -DPNG_POWERPC_VSX_OPT=0" -DPNG_INTEL_SSE_OPT=0, -DPNG_POWERPC_VSX_OPT=0"
If you are using cmake, hardware optimizations are "on"
by default. To disable them, use
cmake . -DPNG_ARM_NEON=no -DPNG_INTEL_SSE=no \
-DPNG_MIPS_MSA=no -DPNG_POWERPC_VSX=no
or disable them all at once with
cmake . -DPNG_HARDWARE_OPTIMIZATIONS=no
XV. Changes to the build and configuration of libpng in libpng-1.5.x XV. Changes to the build and configuration of libpng in libpng-1.5.x
Details of internal changes to the library code can be found in the CHANGES Details of internal changes to the library code can be found in the CHANGES