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benchmark/cmake/AddCXXCompilerFlag.cmake

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CMake
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Resolve regular expression engines
2014-07-31 14:20:20 +00:00
# - Adds a compiler flag if it is supported by the compiler
CMake function for adding compiler flags
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#
Resolve regular expression engines
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# This function checks that the supplied compiler flag is supported and then
# adds it to the corresponding compiler flags
CMake function for adding compiler flags
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#
Resolve regular expression engines
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# add_cxx_compiler_flag(<FLAG> [<VARIANT>])
CMake function for adding compiler flags
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#
# - Example
#
# include(AddCXXCompilerFlag)
Resolve regular expression engines
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# add_cxx_compiler_flag(-Wall)
# add_cxx_compiler_flag(-no-strict-aliasing RELEASE)
CMake function for adding compiler flags
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# Requires CMake 2.6+
Resolve regular expression engines
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if(__add_cxx_compiler_flag)
CMake function for adding compiler flags
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return()
endif()
Resolve regular expression engines
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set(__add_cxx_compiler_flag INCLUDED)
CMake function for adding compiler flags
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include(CheckCXXCompilerFlag)
Add BENCHMARK_BUILD_32_BITS option and add builders to test it (#360) * Add BENCHMARK_BUILD_32_BITS option and add builders to test it * Attempt to fix travis configuration * Make add_required_cxx_compiler_flag cause an error when the flag isn't supported * add gcc-multilib dependancy on travis * attempt to fix travis.yml parsing error * Require g++-multilib instead of gcc-multilib * Add 32 bit release configurations * Attempt to fix libc++ travis build w/ 32 bits * Work around CMake configuration failure on Travis
2017-03-28 07:43:42 +00:00
function(mangle_compiler_flag FLAG OUTPUT)
Improve the CMake C++ flag checker This checks the flag on the compiler AND linker which allows it to work with flags such as -flto and -fsanitize=address
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string(TOUPPER "HAVE_CXX_FLAG_${FLAG}" SANITIZED_FLAG)
string(REPLACE "+" "X" SANITIZED_FLAG ${SANITIZED_FLAG})
Fixed the CMake add_cxx_compiler_flag function
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string(REGEX REPLACE "[^A-Za-z_0-9]" "_" SANITIZED_FLAG ${SANITIZED_FLAG})
string(REGEX REPLACE "_+" "_" SANITIZED_FLAG ${SANITIZED_FLAG})
Add BENCHMARK_BUILD_32_BITS option and add builders to test it (#360) * Add BENCHMARK_BUILD_32_BITS option and add builders to test it * Attempt to fix travis configuration * Make add_required_cxx_compiler_flag cause an error when the flag isn't supported * add gcc-multilib dependancy on travis * attempt to fix travis.yml parsing error * Require g++-multilib instead of gcc-multilib * Add 32 bit release configurations * Attempt to fix libc++ travis build w/ 32 bits * Work around CMake configuration failure on Travis
2017-03-28 07:43:42 +00:00
set(${OUTPUT} "${SANITIZED_FLAG}" PARENT_SCOPE)
endfunction(mangle_compiler_flag)
function(add_cxx_compiler_flag FLAG)
mangle_compiler_flag("${FLAG}" MANGLED_FLAG)
set(OLD_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${FLAG}")
check_cxx_compiler_flag("${FLAG}" ${MANGLED_FLAG})
set(CMAKE_REQUIRED_FLAGS "${OLD_CMAKE_REQUIRED_FLAGS}")
if(${MANGLED_FLAG})
Improve the CMake C++ flag checker This checks the flag on the compiler AND linker which allows it to work with flags such as -flto and -fsanitize=address
2015-04-30 13:04:28 +00:00
set(VARIANT ${ARGV1})
if(ARGV1)
string(TOUPPER "_${VARIANT}" VARIANT)
endif()
Fix #54 by correcting reference to CXX flags for variants.
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set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS${VARIANT}} ${FLAG}" PARENT_SCOPE)
CMake function for adding compiler flags
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endif()
endfunction()
Add BENCHMARK_BUILD_32_BITS option and add builders to test it (#360) * Add BENCHMARK_BUILD_32_BITS option and add builders to test it * Attempt to fix travis configuration * Make add_required_cxx_compiler_flag cause an error when the flag isn't supported * add gcc-multilib dependancy on travis * attempt to fix travis.yml parsing error * Require g++-multilib instead of gcc-multilib * Add 32 bit release configurations * Attempt to fix libc++ travis build w/ 32 bits * Work around CMake configuration failure on Travis
2017-03-28 07:43:42 +00:00
function(add_required_cxx_compiler_flag FLAG)
mangle_compiler_flag("${FLAG}" MANGLED_FLAG)
set(OLD_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${FLAG}")
check_cxx_compiler_flag("${FLAG}" ${MANGLED_FLAG})
set(CMAKE_REQUIRED_FLAGS "${OLD_CMAKE_REQUIRED_FLAGS}")
if(${MANGLED_FLAG})
set(VARIANT ${ARGV1})
if(ARGV1)
string(TOUPPER "_${VARIANT}" VARIANT)
endif()
set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS${VARIANT}} ${FLAG}" PARENT_SCOPE)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${FLAG}" PARENT_SCOPE)
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${FLAG}" PARENT_SCOPE)
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${FLAG}" PARENT_SCOPE)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${FLAG}" PARENT_SCOPE)
else()
message(FATAL_ERROR "Required flag '${FLAG}' is not supported by the compiler")
endif()
endfunction()
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