mirror of https://github.com/f4exb/sdrangel.git
50 lines
2.0 KiB
CMake
50 lines
2.0 KiB
CMake
# example usage: CHECK_CPUID("mmx" HAVE_MMX [TRUE|FALSE])
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macro(CHECK_CPUID CHARACTERISTIC VARIABLE)
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if (${ARGC} GREATER 2)
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set(_CPUID_FORCE ${ARGV2})
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else ()
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unset(_CPUID_FORCE)
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endif ()
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message("-- Checking for CPU characteristic ${CHARACTERISTIC}")
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if (DEFINED _CPUID_FORCE AND _CPUID_FORCE)
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set(_CPUID_CHARACTERISTIC_FOUND ${_CPUID_FORCE})
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set(_FORCED "(forced)")
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else ()
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if (CMAKE_CROSSCOMPILING)
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# When cross compiling, we need to test each characteristic.
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try_compile(CPUID_COMPILE_RESULT
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${CMAKE_CURRENT_BINARY_DIR}
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SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/cmcpuid.c
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COMPILE_DEFINITIONS "-DCROSS_COMPILING" "-DTEST_${CHARACTERISTIC}"
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OUTPUT_VARIABLE CPUID_COMPILE_OUTPUT
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)
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set(_CPUID_CHARACTERISTIC_FOUND ${CPUID_COMPILE_RESULT})
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else ()
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if (NOT _CPUID_CHARACTERISTICS)
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try_run(CPUID_RUN_RESULT CPUID_COMPILE_RESULT
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${CMAKE_CURRENT_BINARY_DIR}
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${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/cmcpuid.c
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RUN_OUTPUT_VARIABLE CPUID_CHARACTERISTICS
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)
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set(_CPUID_CHARACTERISTICS "${CPUID_CHARACTERISTICS}" CACHE INTERNAL "CPU Characteristics")
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endif ()
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if (${_CPUID_CHARACTERISTICS} MATCHES "@${CHARACTERISTIC}@")
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set(_CPUID_CHARACTERISTIC_FOUND TRUE)
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else ()
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set(_CPUID_CHARACTERISTIC_FOUND FALSE)
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endif ()
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endif ()
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unset(_FORCED)
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endif ()
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if (_CPUID_CHARACTERISTIC_FOUND)
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message("-- Checking for CPU characteristic ${CHARACTERISTIC} - found ${_FORCED}")
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else ()
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message("-- Checking for CPU characteristic ${CHARACTERISTIC} - not found")
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endif ()
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set(${VARIABLE} ${_CPUID_CHARACTERISTIC_FOUND} CACHE INTERNAL "Check for CPU characteristic ${CHARACTERISTIC}" FORCE)
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endmacro()
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