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# SPDX-License-Identifier: Apache-2.0
#
# CMake configuration for btop
#
cmake_minimum_required(VERSION 3.12)
# Disable in-source builds since they would override the Makefile
if("${CMAKE_CURRENT_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}")
message(FATAL_ERROR "In-source builds are not allowed")
endif()
project("btop"
VERSION 1.2.13
DESCRIPTION "A monitor of resources"
HOMEPAGE_URL "https://github.com/aristocratos/btop"
LANGUAGES CXX
)
# Make custom modules available
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")
# When the build type is not set we can't fortify
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_COLOR_DIAGNOSTICS ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
# Options
option(BTOP_STATIC "Link btop statically" OFF)
option(BTOP_LTO "Enable LTO" ON)
option(BTOP_USE_MOLD "Use mold to link btop" OFF)
option(BTOP_PEDANTIC "Enable a bunch of additional warnings" OFF)
option(BTOP_WERROR "Compile with warnings as errors" OFF)
if(BTOP_STATIC)
# Set this before calling find_package
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
endif()
if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
find_package(devstat REQUIRED)
find_package(kvm REQUIRED)
if(BTOP_STATIC)
find_package(elf REQUIRED)
endif()
endif()
include(CheckCXXCompilerFlag)
include(CheckIPOSupported)
add_executable(btop
src/btop.cpp
src/btop_config.cpp
src/btop_draw.cpp
src/btop_input.cpp
src/btop_menu.cpp
src/btop_shared.cpp
src/btop_theme.cpp
src/btop_tools.cpp
)
# NOTE: Checks can be simplified with CMake 3.25
if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
target_sources(btop PRIVATE
src/osx/btop_collect.cpp
src/osx/sensors.cpp
src/osx/smc.cpp
)
elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
target_sources(btop PRIVATE src/freebsd/btop_collect.cpp)
elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
target_sources(btop PRIVATE src/linux/btop_collect.cpp)
else()
message(FATAL_ERROR "${CMAKE_SYSTEM_NAME} is not supported")
endif()
# Check for and enable LTO
check_ipo_supported(RESULT ipo_supported)
if(ipo_supported AND BTOP_LTO)
set_target_properties(btop PROPERTIES INTERPROCEDURAL_OPTIMIZATION ON)
endif()
# TODO: enable more warnings in coordination with upstream
target_compile_options(btop PRIVATE
-Wall -Wextra -Wpedantic
-ftree-vectorize -fstack-clash-protection
)
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
target_compile_options(btop PRIVATE
-Wheader-hygiene -Wgnu -Wthread-safety
)
endif()
if(BTOP_PEDANTIC)
target_compile_options(btop PRIVATE
-Wshadow -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Wunused
-Woverloaded-virtual -Wconversion -Wsign-conversion -Wdouble-promotion
-Wformat=2 -Wimplicit-fallthrough -Weffc++
)
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
target_compile_options(btop PRIVATE
-Wduplicated-cond -Wduplicated-branches -Wlogical-op -Wnull-dereference
-Wuseless-cast
)
endif()
endif()
if(BTOP_WERROR)
target_compile_options(btop PRIVATE -Werror)
endif()
check_cxx_compiler_flag(-fstack-protector CXX_HAS_FSTACK_PROTECTOR)
if(CXX_HAS_FSTACK_PROTECTOR)
target_compile_options(btop PRIVATE -fstack-protector)
endif()
check_cxx_compiler_flag(-fcf-protection CXX_HAS_FCF_PROTECTION)
if(CXX_HAS_FCF_PROTECTION)
target_compile_options(btop PRIVATE -fcf-protection)
endif()
target_compile_definitions(btop PRIVATE
_FILE_OFFSET_BITS=64
_GLIBCXX_ASSERTIONS _LIBCPP_ENABLE_ASSERTIONS=1
# Only has an effect with optimizations enabled
$<$<NOT:$<CONFIG:Debug>>:_FORTIFY_SOURCE=2>
)
target_include_directories(btop SYSTEM PRIVATE include)
# mold
if(BTOP_USE_MOLD)
target_link_options(btop PRIVATE -fuse-ld=mold)
endif()
if(BTOP_STATIC)
target_compile_definitions(btop PRIVATE STATIC_BUILD)
target_link_options(btop PRIVATE -static LINKER:--fatal-warnings)
endif()
# Add libraries
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
target_link_libraries(btop PRIVATE Threads::Threads)
if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
target_link_libraries(btop PRIVATE $<LINK_LIBRARY:FRAMEWORK,CoreFoundation)
target_link_libraries(btop PRIVATE $<LINK_LIBRARY:FRAMEWORK,IOKit)
elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
target_link_libraries(btop PRIVATE devstat::devstat kvm::kvm)
if(BTOP_STATIC)
target_link_libraries(btop PRIVATE elf::elf)
endif()
endif()
install(TARGETS btop RUNTIME)
install(FILES "btop.desktop" DESTINATION "share/applications")
install(FILES "Img/icon.png" DESTINATION "share/icons/hicolor/48x48/apps" RENAME "btop.png")
install(FILES "Img/icon.svg" DESTINATION "share/icons/hicolor/scalable/apps" RENAME "btop.svg")
install(DIRECTORY "themes" DESTINATION "share/btop")
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