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polybar/cmake/01-core.cmake
Rune Morling 43556b5d92 cmake: Use GNUInstallDirs (#1818)
* Use GNUInstallDirs instead of hardcoded paths

This change should be a no-op in the normal case and at the same time make it
easier to customise polybar builds on systems with special needs.

* Avoid creating /usr/share/doc/polybar/polybar/*

* Include GNUInstallDirs for the doc target itself

* cmake: Don't try to set CMAKE_INSTALL_* variables

Since we include GNUInstallDirs all these variables are already set

* cmake: Print install directories in summary

* fix(cmake): Make doc-only work like normal build

This is kind of a dirty hack to force CMAKE_INSTALL_DOCDIR to use
`polybar` as the project name when only polybar-doc is built.

Maybe it is wiser at some point to be able to do a doc only build (and
install) that can be done from the top level project. Then we would also
not need to include GNUInstallDirs here
2019-06-24 18:08:59 +02:00

93 lines
3.7 KiB
CMake

#
# Core setup
#
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(THREADS_PREFER_PTHREAD_FLAG ON)
# Export compile commands used for custom targets
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
# Set default build type if not specified
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Release")
message_colored(STATUS "No build type specified; using ${CMAKE_BUILD_TYPE}" 33)
endif()
string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_UPPER)
# Compiler flags
set(CMAKE_CXX_FLAGS "${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}")