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Copy pathCMakeLists.txt
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117 lines (95 loc) · 4.8 KB
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cmake_minimum_required (VERSION 3.10)
project (simplecpp LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 11 CACHE STRING "C++ standard to use")
set(CMAKE_CXX_STANDARD_REQUIRED ON)
if(CMAKE_CXX_STANDARD LESS 11)
message(FATAL_ERROR "C++ standard was set to ${CMAKE_CXX_STANDARD} but 11 is required as a minimum")
endif()
include(CheckCXXCompilerFlag)
if (WIN32)
# prevent simplifyPath_cppcheck() from wasting time on looking for a hypothetical network host
add_definitions(-DUNCHOST=$ENV{COMPUTERNAME})
endif()
function(add_compile_options_safe FLAG)
string(MAKE_C_IDENTIFIER "HAS_CXX_FLAG${FLAG}" mangled_flag)
check_cxx_compiler_flag(${FLAG} ${mangled_flag})
if (${mangled_flag})
add_compile_options(${FLAG})
endif()
endfunction()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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(-Wpacked) #
add_compile_options(-Wredundant-decls) # if anything is declared more than once in the same scope
add_compile_options(-Wundef)
add_compile_options(-Woverloaded-virtual) # when a function declaration hides virtual functions from a base class
add_compile_options(-Wsuggest-attribute=noreturn)
if (NOT MINGW)
add_compile_options_safe(-Wuseless-cast)
endif()
# we are not interested in these
set_source_files_properties(test.cpp PROPERTIES COMPILE_FLAGS -Wno-multichar)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
add_compile_definitions(_CRT_SECURE_NO_WARNINGS)
add_compile_options(/W4) # Warning Level
add_compile_options(/wd4127) # warning C4127: conditional expression is constant
add_compile_options(/wd4244) # warning C4244: 'x': conversion from 'int' to 'char', possible loss of data
add_compile_options(/wd4267) # warning C4267: '...': conversion from 'size_t' to 'unsigned int', possible loss of data
add_compile_options(/wd4706) # warning C4706: assignment within conditional expression
elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
add_compile_options(-Weverything)
# no need for c++98 compatibility
add_compile_options(-Wno-c++98-compat-pedantic)
# these are not really fixable until newer standards
add_compile_options(-Wno-exit-time-destructors)
add_compile_options(-Wno-global-constructors)
add_compile_options(-Wno-weak-vtables)
add_compile_options_safe(-Wno-unsafe-buffer-usage)
add_compile_options_safe(-Wno-nrvo)
# contradicts -Wcovered-switch-default
add_compile_options(-Wno-switch-default)
if (MINGW)
add_compile_options(-Wno-reserved-macro-identifier)
add_compile_options(-Wno-unused-macros)
endif()
# these are experimental warnings which might produce false positives
add_compile_options_safe(-Wno-thread-safety-negative)
add_compile_options_safe(-Wno-thread-safety-beta)
# TODO: fix these?
add_compile_options(-Wno-padded)
add_compile_options(-Wno-sign-conversion)
add_compile_options(-Wno-implicit-int-conversion)
add_compile_options(-Wno-shorten-64-to-32)
add_compile_options(-Wno-shadow-field-in-constructor)
# we are not interested in these
set_source_files_properties(test.cpp PROPERTIES COMPILE_FLAGS "-Wno-multichar -Wno-four-char-constants")
if (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 14 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 14)
# TODO: verify this regression still exists in clang-15
if (CMAKE_BUILD_TYPE STREQUAL "Release" OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
# work around performance regression - see https://github.com/llvm/llvm-project/issues/53555
add_compile_options(-mllvm -inline-deferral)
endif()
# use force DWARF 4 debug format since not all tools might be able to handle DWARF 5 yet - e.g. valgrind on ubuntu 20.04
add_compile_options(-gdwarf-4)
endif()
if (APPLE)
# CMake is sometimes chosing the wrong compiler on macos-* runners
# see https://github.com/actions/runner/issues/4034
add_compile_options(-Wno-poison-system-directories)
endif()
endif()
add_library(simplecpp_obj OBJECT simplecpp.cpp)
add_executable(simplecpp $<TARGET_OBJECTS:simplecpp_obj> main.cpp)
add_executable(testrunner $<TARGET_OBJECTS:simplecpp_obj> test.cpp)
target_compile_definitions(testrunner
PRIVATE
SIMPLECPP_TEST_SOURCE_DIR="${CMAKE_CURRENT_SOURCE_DIR}"
)
enable_testing()
add_test(NAME testrunner COMMAND testrunner)