mirror of https://github.com/pvnis/srsRAN_4G.git
Try_compile() based CMAKE SSE checking
ismagom
9 years ago
parent
c64882d9c2
commit
309791cc61
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#.rst:
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# CheckCSourceRuns
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# ----------------
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#
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# Check if the given C source code compiles and runs.
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#
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# CHECK_C_SOURCE_RUNS(<code> <var>)
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#
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# ::
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#
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# <code> - source code to try to compile
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# <var> - variable to store the result
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# (1 for success, empty for failure)
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# Will be created as an internal cache variable.
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#
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# The following variables may be set before calling this macro to modify
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# the way the check is run:
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#
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# ::
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#
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# CMAKE_REQUIRED_FLAGS = string of compile command line flags
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# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
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# CMAKE_REQUIRED_INCLUDES = list of include directories
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# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
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# CMAKE_REQUIRED_QUIET = execute quietly without messages
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#=============================================================================
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# Copyright 2006-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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macro(CHECK_C_SOURCE_RUNS SOURCE VAR)
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if(NOT DEFINED "${VAR}")
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set(MACRO_CHECK_FUNCTION_DEFINITIONS
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"-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
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if(CMAKE_REQUIRED_LIBRARIES)
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set(CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES
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LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
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else()
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set(CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES)
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endif()
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if(CMAKE_REQUIRED_INCLUDES)
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set(CHECK_C_SOURCE_COMPILES_ADD_INCLUDES
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"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
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else()
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set(CHECK_C_SOURCE_COMPILES_ADD_INCLUDES)
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endif()
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file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c"
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"${SOURCE}\n")
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if(NOT CMAKE_REQUIRED_QUIET)
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message(STATUS "Performing Test ${VAR}")
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endif()
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try_run(${VAR}_EXITCODE ${VAR}_COMPILED
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${CMAKE_BINARY_DIR}
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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${CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES}
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CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
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-DCMAKE_SKIP_RPATH:BOOL=${CMAKE_SKIP_RPATH}
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"${CHECK_C_SOURCE_COMPILES_ADD_INCLUDES}"
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COMPILE_OUTPUT_VARIABLE OUTPUT)
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# if it did not compile make the return value fail code of 1
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if(NOT ${VAR}_COMPILED)
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set(${VAR}_EXITCODE 1)
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endif()
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# if the return value was 0 then it worked
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if("${${VAR}_EXITCODE}" EQUAL 0)
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set(${VAR} 1 CACHE INTERNAL "Test ${VAR}")
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if(NOT CMAKE_REQUIRED_QUIET)
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message(STATUS "Performing Test ${VAR} - Success")
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endif()
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Performing C SOURCE FILE Test ${VAR} succeeded with the following output:\n"
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"${OUTPUT}\n"
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"Return value: ${${VAR}}\n"
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"Source file was:\n${SOURCE}\n")
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else()
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if(CMAKE_CROSSCOMPILING AND "${${VAR}_EXITCODE}" MATCHES "FAILED_TO_RUN")
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set(${VAR} "${${VAR}_EXITCODE}")
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else()
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set(${VAR} "" CACHE INTERNAL "Test ${VAR}")
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endif()
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if(NOT CMAKE_REQUIRED_QUIET)
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message(STATUS "Performing Test ${VAR} - Failed")
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endif()
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Performing C SOURCE FILE Test ${VAR} failed with the following output:\n"
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"${OUTPUT}\n"
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"Return value: ${${VAR}_EXITCODE}\n"
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"Source file was:\n${SOURCE}\n")
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endif()
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endif()
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endmacro()
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@ -1,85 +1,58 @@
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# Check if SSE instructions are available on the machine where
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if (NOT CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|^i[3,9]86$")
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# the project is compiled.
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return()
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endif()
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# Minimum requirement to enable SSE turbo decoder is SSE4.1
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# Since SSE 4.1 includes all previous SSE, look only for this one.
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include(CheckCSourceRuns)
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# Check also AVX availability (for equalizer)
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option(ENABLE_SSE "Enable compile-time SSE4.1 support." ON)
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option(ENABLE_AVX "Enable compile-time AVX support." ON)
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IF(CMAKE_SYSTEM_NAME MATCHES "Linux")
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EXEC_PROGRAM(cat ARGS "/proc/cpuinfo" OUTPUT_VARIABLE CPUINFO)
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if (ENABLE_SSE)
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#
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STRING(REGEX REPLACE "^.*(sse4_1).*$" "\\1" SSE_THERE ${CPUINFO})
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# Check compiler for SSE4_1 intrinsics
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STRING(COMPARE EQUAL "sse4_1" "${SSE_THERE}" SSE41_TRUE)
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#
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IF (SSE41_TRUE)
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if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG )
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set(SSE4_1_FOUND true CACHE BOOL "SSE4.1 available on host")
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set(CMAKE_REQUIRED_FLAGS "-msse4.1")
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ELSE (SSE41_TRUE)
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check_c_source_runs("
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set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
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#include <emmintrin.h>
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ENDIF (SSE41_TRUE)
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#include <smmintrin.h>
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STRING(REGEX REPLACE "^.*(sse4_2).*$" "\\1" SSE_THERE ${CPUINFO})
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int main()
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STRING(COMPARE EQUAL "sse4_2" "${SSE_THERE}" SSE42_TRUE)
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{
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IF (SSE42_TRUE)
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__m128i a = _mm_setzero_si128();
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set(SSE4_2_FOUND true CACHE BOOL "SSE4.2 available on host")
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__m128i b = _mm_minpos_epu16(a);
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ELSE (SSE42_TRUE)
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return 0;
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set(SSE4_2_FOUND false CACHE BOOL "SSE4.2 available on host")
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}"
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ENDIF (SSE42_TRUE)
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HAVE_SSE)
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endif()
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STRING(REGEX REPLACE "^.*(avx).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "avx" "${SSE_THERE}" AVX_TRUE)
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if (HAVE_SSE)
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IF (AVX_TRUE)
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message(STATUS "SSE4.1 is enabled - target CPU must support it")
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set(AVX_FOUND true CACHE BOOL "AVX available on host")
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endif()
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ELSE (AVX_TRUE)
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set(AVX_FOUND false CACHE BOOL "AVX available on host")
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if (ENABLE_AVX)
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ENDIF (AVX_TRUE)
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ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Darwin")
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#
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EXEC_PROGRAM("/usr/sbin/sysctl -n machdep.cpu.features" OUTPUT_VARIABLE
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# Check compiler for AVX intrinsics
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CPUINFO)
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#
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if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG )
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STRING(REGEX REPLACE "^.*(SSE4.1).*$" "\\1" SSE_THERE ${CPUINFO})
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set(CMAKE_REQUIRED_FLAGS "-mavx")
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STRING(COMPARE EQUAL "SSE4.1" "${SSE_THERE}" SSE41_TRUE)
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check_c_source_runs("
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IF (SSE41_TRUE)
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#include <immintrin.h>
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set(SSE4_1_FOUND true CACHE BOOL "SSE4.1 available on host")
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ELSE (SSE41_TRUE)
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int main()
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set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
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{
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ENDIF (SSE41_TRUE)
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__m256i a = _mm256_setzero_si256();
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return 0;
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STRING(REGEX REPLACE "^.*(SSE4.2).*$" "\\1" SSE_THERE ${CPUINFO})
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}"
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STRING(COMPARE EQUAL "SSE4.2" "${SSE_THERE}" SSE42_TRUE)
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HAVE_AVX)
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IF (SSE42_TRUE)
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endif()
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set(SSE4_2_FOUND true CACHE BOOL "SSE4.2 available on host")
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ELSE (SSE42_TRUE)
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if (HAVE_AVX)
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set(SSE4_2_FOUND false CACHE BOOL "SSE4.2 available on host")
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message(STATUS "AVX is enabled - target CPU must support it")
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ENDIF (SSE42_TRUE)
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endif()
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endif()
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STRING(REGEX REPLACE "^.*(AVX).*$" "\\1" SSE_THERE ${CPUINFO})
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STRING(COMPARE EQUAL "AVX" "${SSE_THERE}" AVX_TRUE)
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endif()
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IF (AVX_TRUE)
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set(AVX_FOUND true CACHE BOOL "AVX available on host")
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mark_as_advanced(HAVE_SSE, HAVE_AVX)
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ELSE (AVX_TRUE)
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set(AVX_FOUND false CACHE BOOL "AVX available on host")
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ENDIF (AVX_TRUE)
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ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Windows")
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# TODO
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set(SSE4_2_FOUND false CACHE BOOL "SSE4.2 available on host")
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set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
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set(AVX_FOUND false CACHE BOOL "AVX available on host")
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ELSE(CMAKE_SYSTEM_NAME MATCHES "Linux")
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set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
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set(AVX_FOUND false CACHE BOOL "AVX available on host")
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ENDIF(CMAKE_SYSTEM_NAME MATCHES "Linux")
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if(NOT SSE4_1_FOUND)
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MESSAGE(STATUS "Could not find hardware support for SSE4.1 on this machine.")
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endif(NOT SSE4_1_FOUND)
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if(NOT SSE4_2_FOUND)
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MESSAGE(STATUS "Could not find hardware support for SSE4.2 on this machine.")
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endif(NOT SSE4_2_FOUND)
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if(NOT AVX_FOUND)
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MESSAGE(STATUS "Could not find hardware support for AVX on this machine.")
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endif(NOT AVX_FOUND)
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mark_as_advanced(SSE4_1_FOUND AVX_FOUND)
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