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cpu.cmake: use unique flag to test simd disable flags

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this avoids the result being cached in a common variable causing
potentially incorrect results in future tests and improves the logging
output

BUG=webp:351

Change-Id: I4b3110beec38f505fc8f835c3ea689a7d81a36bb
This commit is contained in:
James Zern 2017-06-28 19:10:48 -07:00
parent 28914528e1
commit d67555809f
1 changed files with 3 additions and 2 deletions
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5
cmake/cpu.cmake
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@ -101,11 +101,12 @@ foreach(I_SIMD RANGE ${WEBP_SIMD_FLAGS_RANGE})
set(COMMON_PATTERNS)
endif()
set(CMAKE_REQUIRED_DEFINITIONS ${SIMD_COMPILE_FLAG})
check_c_source_compiles("int main(void) {return 0;}" FLAG2
check_c_source_compiles("int main(void) {return 0;}"
FLAG_${SIMD_COMPILE_FLAG}
FAIL_REGEX "warning: argument unused during compilation:"
${COMMON_PATTERNS}
)
if(NOT FLAG2)
if(NOT FLAG_${SIMD_COMPILE_FLAG})
unset(HAS_COMPILE_FLAG CACHE)
endif()
endif()