cppcheck/cmake/compileroptions.cmake

108 lines
4.6 KiB
CMake

include(CheckCXXCompilerFlag)
function(add_compile_options_safe FLAG)
check_cxx_compiler_flag(${FLAG} _has_flag)
if (_has_flag)
add_compile_options(${FLAG})
endif()
endfunction()
function(target_compile_options_safe TARGET FLAG)
check_cxx_compiler_flag(${FLAG} _has_flag)
if (_has_flag)
target_compile_options(${TARGET} PRIVATE ${FLAG})
endif()
endfunction()
if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
if(CMAKE_BUILD_TYPE MATCHES "Release")
# "Release" uses -O3 by default
add_compile_options(-O2)
endif()
if (WARNINGS_ARE_ERRORS)
add_compile_options(-Werror)
endif()
add_compile_options(-pedantic)
add_compile_options(-Wall)
add_compile_options(-Wextra)
add_compile_options(-Wcast-qual) # Cast for removing type qualifiers
add_compile_options(-Wfloat-equal) # Floating values used in equality comparisons
add_compile_options(-Wmissing-declarations) # If a global function is defined without a previous declaration
add_compile_options(-Wmissing-format-attribute) #
add_compile_options(-Wno-long-long)
add_compile_options(-Wpacked) #
add_compile_options(-Wredundant-decls) # if anything is declared more than once in the same scope
add_compile_options(-Wundef)
add_compile_options(-Wno-shadow) # whenever a local variable or type declaration shadows another one
add_compile_options(-Wno-missing-field-initializers)
add_compile_options(-Wno-missing-braces)
add_compile_options(-Wno-sign-compare)
add_compile_options(-Wno-multichar)
endif()
if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6)
message(FATAL_ERROR "${PROJECT_NAME} c++11 support requires g++ 4.6 or greater, but it is ${CMAKE_CXX_COMPILER_VERSION}")
endif ()
add_compile_options(-Woverloaded-virtual) # when a function declaration hides virtual functions from a base class
add_compile_options(-Wno-maybe-uninitialized) # there are some false positives
add_compile_options(-Wsuggest-attribute=noreturn)
elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
add_compile_options(-Wno-four-char-constants)
add_compile_options(-Wno-missing-braces)
add_compile_options(-Wno-unused-function)
add_compile_options_safe(-Wextra-semi-stmt)
add_compile_options_safe(-Wcomma)
add_compile_options_safe(-Wdocumentation)
add_compile_options_safe(-Wdocumentation-pedantic)
add_compile_options_safe(-Wno-documentation-unknown-command)
add_compile_options_safe(-Wimplicit-fallthrough)
add_compile_options_safe(-Wmissing-noreturn)
if(ENABLE_COVERAGE OR ENABLE_COVERAGE_XML)
message(FATAL_ERROR "Do not use clang for generate code coverage. Use gcc.")
endif()
endif()
if (MSVC)
add_compile_options(/W4)
add_compile_options(/wd4018) # warning C4018: '>': signed/unsigned mismatch
add_compile_options(/wd4127) # warning C4127: conditional expression is constant
add_compile_options(/wd4146) # warning C4146: unary minus operator applied to unsigned type, result still unsigned
add_compile_options(/wd4244) # warning C4244: 'initializing': conversion from 'int' to 'char', possible loss of data
add_compile_options(/wd4251)
# Clang: -Wshorten-64-to-32 -Wimplicit-int-conversion
add_compile_options(/wd4267) # warning C4267: 'return': conversion from 'size_t' to 'int', possible loss of data
add_compile_options(/wd4389) # warning C4389: '==': signed/unsigned mismatch
add_compile_options(/wd4482)
add_compile_options(/wd4512)
add_compile_options(/wd4701) # warning C4701: potentially uninitialized local variable 'err' used
add_compile_options(/wd4706) # warning C4706: assignment within conditional expression
add_compile_options(/wd4800) # warning C4800: 'const SymbolDatabase *' : forcing value to bool 'true' or 'false' (performance warning)
add_compile_options(/wd4805) # warning C4805: '==' : unsafe mix of type 'bool' and type 'long long' in operation
if (WARNINGS_ARE_ERRORS)
add_compile_options(/WX)
endif()
endif()
# TODO: check if this can be enabled again - also done in Makefile
if (CMAKE_SYSTEM_NAME MATCHES "Linux" AND
CMAKE_CXX_COMPILER_ID MATCHES "Clang")
add_compile_options(-U_GLIBCXX_DEBUG)
endif()
if (MSVC)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:8000000")
endif()
if (CYGWIN)
# TODO: this is a linker flag - not a compiler flag
add_compile_options(-Wl,--stack,8388608)
endif()
include(cmake/dynamic_analyzer_options.cmake)