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HandleROSAOptions.cmake
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HandleROSAOptions.cmake
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# This CMake module is responsible for interpreting the user defined ROSA_
# options and executing the appropriate CMake commands to realize the users'
# selections.
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
if( CMAKE_COMPILER_IS_GNUCXX )
set(ROSA_COMPILER_IS_GCC_COMPATIBLE ON)
elseif( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
set(ROSA_COMPILER_IS_GCC_COMPATIBLE ON)
elseif( MSVC )
set(ROSA_COMPILER_IS_GCC_COMPATIBLE OFF)
endif()
function(append value)
foreach(variable ${ARGN})
set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
endforeach(variable)
endfunction()
function(append_if condition value)
if (${condition})
foreach(variable ${ARGN})
set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
endforeach(variable)
endif()
endfunction()
# NDEBUG on non-Debug builds
append("-DNDEBUG" CMAKE_CXX_FLAGS_RELEASE
CMAKE_CXX_FLAGS_RELWITHDEBINFO
CMAKE_CXX_FLAGS_MINSIZEREL
CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_RELWITHDEBINFO
CMAKE_C_FLAGS_MINSIZEREL)
# Assertions are always enabled on Debug builds, this is interesting for
# non-Debug builds.
if( NOT "${uppercase_CMAKE_BUILD_TYPE}" STREQUAL "DEBUG" AND ${ROSA_ENABLE_ASSERTIONS} )
# MSVC doesn't like _DEBUG on release builds. See PR 4379.
if( NOT MSVC )
add_definitions( -D_DEBUG )
set(ENABLE_ASSERTIONS "1")
else()
set(ENABLE_ASSERTIONS "0")
endif()
# On non-Debug builds we NDEBUG, but in this case we need to undefine it:
add_definitions(-UNDEBUG)
# Also remove /D NDEBUG to avoid MSVC warnings about conflicting defines.
foreach (flags_var_to_scrub
CMAKE_CXX_FLAGS_RELEASE
CMAKE_CXX_FLAGS_RELWITHDEBINFO
CMAKE_CXX_FLAGS_MINSIZEREL
CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_RELWITHDEBINFO
CMAKE_C_FLAGS_MINSIZEREL)
string (REGEX REPLACE "(^| )[/-]D *NDEBUG($| )" " "
"${flags_var_to_scrub}" "${${flags_var_to_scrub}}")
endforeach()
endif()
set(ROSA_ENABLE_ASSERTIONS_INT -1)
if( "${uppercase_CMAKE_BUILD_TYPE}" STREQUAL "DEBUG" OR ${ROSA_ENABLE_ASSERTIONS} )
set(ROSA_ENABLE_ASSERTIONS_INT 1)
endif()
if( ROSA_COMPILER_IS_GCC_COMPATIBLE )
append("-Wall -Wextra -Wdocumentation -Werror" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append_if(ROSA_ENABLE_PEDANTIC "-pedantic -Wno-long-long" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
append("-fno-rtti -fno-exceptions" CMAKE_CXX_FLAGS)
check_cxx_compiler_flag("-std=c++14" CXX_SUPPORTS_CXX14)
if ( CXX_SUPPORTS_CXX14 )
append("-std=c++14" CMAKE_CXX_FLAGS)
else()
message(FATAL_ERROR "RoSA requires C++14 support but the '-std=c++14' flag isn't supported.")
endif()
check_c_compiler_flag("-std=c11" C_SUPPORTS_C11)
if ( C_SUPPORTS_C11 )
append("-std=c11" CMAKE_C_FLAGS)
else()
message(FATAL_ERROR "RoSA requires C11 support but the '-std=c11' flag isn't supported.")
endif()
else ( ROSA_COMPILER_IS_GCC_COMPATIBLE )
# FIXME: set the same things as for GCC-compatible compilers
endif( ROSA_COMPILER_IS_GCC_COMPATIBLE )
if( ROSA_ENABLE_CLANG_TIDY )
# Set clang-tidy arguments, use the same for both C and CXX.
set(CMAKE_C_CLANG_TIDY "${CLANGTIDY_EXECUTABLE};-header-filter=.*")
set(CMAKE_CXX_CLANG_TIDY ${CMAKE_C_CLANG_TIDY})
# Apply suggested fixes if requested.
append_if(ROSA_CLANG_TIDY_FIX ",-fix" CMAKE_C_CLANG_TIDY CMAKE_CXX_CLANG_TIDY)
endif( ROSA_ENABLE_CLANG_TIDY )

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