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 ${FLAG}) endif() endfunction() if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") add_compile_options(-Weverything) endif() if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Clang") if(CMAKE_BUILD_TYPE MATCHES "Release") # "Release" uses -O3 by default add_compile_options(-O2) endif() if (WARNINGS_ARE_ERRORS) add_compile_options(-Werror) endif() add_compile_options(-pedantic) add_compile_options(-Wall) add_compile_options(-Wextra) add_compile_options(-Wcast-qual) # Cast for removing type qualifiers add_compile_options(-Wfloat-equal) # Floating values used in equality comparisons add_compile_options(-Wmissing-declarations) # If a global function is defined without a previous declaration add_compile_options(-Wmissing-format-attribute) # add_compile_options(-Wno-long-long) add_compile_options(-Wpacked) # add_compile_options(-Wredundant-decls) # if anything is declared more than once in the same scope add_compile_options(-Wundef) add_compile_options(-Wno-missing-field-initializers) add_compile_options(-Wno-missing-braces) add_compile_options(-Wno-sign-compare) add_compile_options(-Wno-multichar) endif() if (CMAKE_CXX_COMPILER_ID MATCHES "GNU") if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6) message(FATAL_ERROR "${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) add_compile_options(-Wno-shadow) # whenever a local variable or type declaration shadows another one elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang") add_compile_options_safe(-Wno-documentation-unknown-command) # TODO: fix and enable these warnings - or move to suppression list below add_compile_options_safe(-Wno-deprecated-copy-dtor) add_compile_options_safe(-Wno-non-virtual-dtor) add_compile_options_safe(-Wno-inconsistent-missing-destructor-override) # caused by Qt moc code add_compile_options_safe(-Wno-unused-exception-parameter) add_compile_options_safe(-Wno-old-style-cast) add_compile_options_safe(-Wno-global-constructors) add_compile_options_safe(-Wno-exit-time-destructors) add_compile_options_safe(-Wno-sign-conversion) add_compile_options_safe(-Wno-shadow-field-in-constructor) add_compile_options_safe(-Wno-covered-switch-default) add_compile_options_safe(-Wno-shorten-64-to-32) add_compile_options_safe(-Wno-zero-as-null-pointer-constant) add_compile_options_safe(-Wno-format-nonliteral) add_compile_options_safe(-Wno-implicit-int-conversion) add_compile_options_safe(-Wno-double-promotion) add_compile_options_safe(-Wno-shadow-field) add_compile_options_safe(-Wno-shadow-uncaptured-local) add_compile_options_safe(-Wno-unreachable-code) add_compile_options_safe(-Wno-implicit-float-conversion) add_compile_options_safe(-Wno-switch-enum) add_compile_options_safe(-Wno-float-conversion) add_compile_options_safe(-Wno-redundant-parens) # caused by Qt moc code add_compile_options_safe(-Wno-enum-enum-conversion) add_compile_options_safe(-Wno-date-time) add_compile_options_safe(-Wno-suggest-override) add_compile_options_safe(-Wno-suggest-destructor-override) add_compile_options_safe(-Wno-conditional-uninitialized) # warnings we are not interested in add_compile_options(-Wno-four-char-constants) add_compile_options(-Wno-c++98-compat) add_compile_options(-Wno-weak-vtables) add_compile_options(-Wno-padded) add_compile_options(-Wno-c++98-compat-pedantic) add_compile_options(-Wno-disabled-macro-expansion) add_compile_options(-Wno-reserved-id-macro) add_compile_options_safe(-Wno-return-std-move-in-c++11) 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)