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polybar/cmake/cxx.cmake
patrick96 923d9ae061 Add cmake files for configuring individual targets
This makes the code a bit less messy. We barely need if(BUILD_...)
guards inside the cmake files, just the root CMakeLists.txt.
2020-12-24 02:20:38 +01:00

96 lines
3.9 KiB
CMake

option(ENABLE_CCACHE "Enable ccache support" ON)
if(ENABLE_CCACHE)
find_program(BIN_CCACHE ccache)
mark_as_advanced(BIN_CCACHE)
if(NOT BIN_CCACHE)
message_colored(STATUS "Couldn't locate ccache, disabling ccache..." "33")
else()
# Enable only if the binary is found
message_colored(STATUS "Using compiler cache ${BIN_CCACHE}" "32")
set(CMAKE_CXX_COMPILER_LAUNCHER ${BIN_CCACHE} CACHE STRING "")
endif()
endif()
option(CXXLIB_CLANG "Link against libc++" OFF)
option(CXXLIB_GCC "Link against stdlibc++" OFF)
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(THREADS_PREFER_PTHREAD_FLAG ON)
# Compiler flags
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wextra")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wpedantic")
if (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
# Need dprintf() for FreeBSD 11.1 and older
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_WITH_DPRINTF")
# libinotify uses c99 extension, so suppress this error
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-c99-extensions")
# Ensures that libraries from dependencies in LOCALBASE are used
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L/usr/local/lib")
endif()
if(${CMAKE_CXX_COMPILER_ID} STREQUAL Clang)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-error=parentheses-equality")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-zero-length-array")
endif()
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g2")
if(${CMAKE_CXX_COMPILER_ID} STREQUAL GNU)
set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -fdata-sections -ffunction-sections")
set(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL} -Wl,--gc-sections,--icf=safe")
endif()
# Check compiler
if(${CMAKE_CXX_COMPILER_ID} STREQUAL Clang)
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.4.0")
message_colored(FATAL_ERROR "Compiler not supported (Requires clang-3.4+ or gcc-5.1+)" 31)
else()
message_colored(STATUS "Using supported compiler ${CMAKE_CXX_COMPILER_ID}-${CMAKE_CXX_COMPILER_VERSION}" 32)
endif()
elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL GNU)
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.1.0")
message_colored(FATAL_ERROR "Compiler not supported (Requires clang-3.4+ or gcc-5.1+)" 31)
else()
message_colored(STATUS "Using supported compiler ${CMAKE_CXX_COMPILER_ID}-${CMAKE_CXX_COMPILER_VERSION}" 32)
endif()
else()
message_colored(WARNING "Using unsupported compiler ${CMAKE_CXX_COMPILER_ID}-${CMAKE_CXX_COMPILER_VERSION} !" 31)
endif()
# Set compiler and linker flags for preferred C++ library
if(CXXLIB_CLANG)
message_colored(STATUS "Linking against libc++" 32)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lc++ -lc++abi")
elseif(CXXLIB_GCC)
message_colored(STATUS "Linking against libstdc++" 32)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lstdc++")
endif()
# Custom build type ; SANITIZE
SET(CMAKE_CXX_FLAGS_SANITIZE "-O0 -g -fsanitize=address -fsanitize=undefined -fno-omit-frame-pointer -fno-optimize-sibling-calls"
CACHE STRING "Flags used by the C++ compiler during sanitize builds." FORCE)
SET(CMAKE_EXE_LINKER_FLAGS_SANITIZE ""
CACHE STRING "Flags used for linking binaries during sanitize builds." FORCE)
SET(CMAKE_SHARED_LINKER_FLAGS_SANITIZE ""
CACHE STRING "Flags used by the shared libraries linker during sanitize builds." FORCE)
MARK_AS_ADVANCED(
CMAKE_CXX_FLAGS_SANITIZE
CMAKE_EXE_LINKER_FLAGS_SANITIZE
CMAKE_SHARED_LINKER_FLAGS_SANITIZE)
# Custom build type ; Coverage
SET(CMAKE_CXX_FLAGS_COVERAGE
"${CMAKE_CXX_FLAGS_DEBUG} ${CMAKE_CXX_FLAGS_COVERAGE} --coverage")
SET(CMAKE_EXE_LINKER_FLAGS_COVERAGE
"${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${CMAKE_EXE_LINKER_FLAGS_COVERAGE}")
SET(CMAKE_SHARED_LINKER_FLAGS_COVERAGE
"${CMAKE_SHARED_LINKER_FLAGS_DEBUG} ${CMAKE_SHARED_LINKER_FLAGS_COVERAGE}")