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# SPDX-License-Identifier: Apache-2.0
#
# CMake configuration for btop
#
cmake_minimum_required(VERSION 3.25)
# 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"
DESCRIPTION "A monitor of resources"
HOMEPAGE_URL "https://github.com/aristocratos/btop"
LANGUAGES CXX
)
include(CheckIPOSupported)
include(CMakeDependentOption)
# Make our Find<Package>.cmake files available
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/")
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_COLOR_DIAGNOSTICS ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
option(BTOP_STATIC "Link btop statically" OFF)
option(BTOP_GPU "Enable GPU support" ON)
cmake_dependent_option(BTOP_RSMI_STATIC "Link statically to ROCm SMI" OFF "BTOP_GPU" OFF)
# Enable LTO in release builds by default
if(CMAKE_BUILD_TYPE MATCHES "Rel(ease|WithDebInfo)")
option(BTOP_LTO "Enable LTO" ON)
else()
option(BTOP_LTO "Enable LTO" OFF)
endif()
if(BTOP_STATIC AND NOT APPLE)
# Set this before calling find_package
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
endif()
add_executable(btop src/main.cpp)
add_library(libbtop OBJECT
src/btop.cpp
src/btop_cli.cpp
src/btop_config.cpp
src/btop_draw.cpp
src/btop_input.cpp
src/btop_menu.cpp
src/btop_shared.cpp
src/btop_theme.cpp
src/btop_tools.cpp
)
target_link_libraries(btop libbtop)
if(BTOP_LTO)
check_ipo_supported()
set_target_properties(btop PROPERTIES INTERPROCEDURAL_OPTIMIZATION ON)
set_target_properties(libbtop PROPERTIES INTERPROCEDURAL_OPTIMIZATION ON)
endif()
if(APPLE)
target_sources(libbtop PRIVATE src/osx/btop_collect.cpp src/osx/sensors.cpp src/osx/smc.cpp)
elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR CMAKE_SYSTEM_NAME STREQUAL "MidnightBSD")
target_sources(libbtop PRIVATE src/freebsd/btop_collect.cpp)
elseif(CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
target_sources(libbtop PRIVATE src/openbsd/btop_collect.cpp src/openbsd/sysctlbyname.cpp)
elseif(CMAKE_SYSTEM_NAME STREQUAL "NetBSD")
target_sources(libbtop PRIVATE src/netbsd/btop_collect.cpp)
elseif(LINUX)
target_sources(libbtop PRIVATE src/linux/btop_collect.cpp)
if(BTOP_GPU)
add_subdirectory(src/linux/intel_gpu_top)
endif()
else()
message(FATAL_ERROR "${CMAKE_SYSTEM_NAME} is not supported")
endif()
# Generate build info
execute_process(
COMMAND "git" "rev-parse" "--short" "HEAD"
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_VARIABLE GIT_COMMIT
OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
set(CONFIGURE_COMMAND
"cmake -DBTOP_STATIC=${BTOP_STATIC} -DBTOP_GPU=${BTOP_GPU}"
)
get_filename_component(CXX_COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
set(COMPILER "${CXX_COMPILER_BASENAME}")
set(COMPILER_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h @ONLY IMMEDIATE)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
include(CheckCXXSourceCompiles)
include(CheckCXXSymbolExists)
check_cxx_source_compiles(
"
#include <version>
#if __cpp_lib_optional < 202110L
#error \"Missing __cpp_lib_optional < 202110L\"
#endif
int main() { return 0; }
"
HAS_CXX_OPTIONAL_MONADS
)
if(NOT HAS_CXX_OPTIONAL_MONADS)
message(FATAL_ERROR "The compiler doesn't support std::optional::and_then")
endif()
check_cxx_symbol_exists("__cpp_lib_expected" "version" HAS_CXX_EXPECTED)
if(NOT HAS_CXX_EXPECTED)
message(FATAL_ERROR "The compiler doesn't support std::expected")
endif()
check_cxx_symbol_exists("__cpp_lib_ranges" "version" HAS_CXX_RANGES)
if(NOT HAS_CXX_RANGES)
message(FATAL_ERROR "The compiler doesn't support std::ranges")
endif()
check_cxx_symbol_exists("__cpp_lib_ranges_to_container" "version" HAS_CXX_RANGES_TO_CONTAINER)
if(NOT HAS_CXX_RANGES_TO_CONTAINER)
message(FATAL_ERROR "The compiler doesn't support std::ranges::to")
endif()
check_cxx_symbol_exists("__cpp_lib_string_contains" "version" HAS_CXX_STRING_CONTAINS)
if(NOT HAS_CXX_STRING_CONTAINS)
message(FATAL_ERROR "The compiler doesn't support std::string::contains")
endif()
target_compile_options(libbtop PUBLIC -Wall -Wextra -Wpedantic)
include(CheckCXXCompilerFlag)
if(NOT APPLE)
target_compile_options(libbtop PUBLIC -fstack-clash-protection)
endif()
check_cxx_compiler_flag(-fstack-protector HAS_FSTACK_PROTECTOR)
if(HAS_FSTACK_PROTECTOR)
target_compile_options(libbtop PUBLIC -fstack-protector)
endif()
check_cxx_compiler_flag(-fcf-protection HAS_FCF_PROTECTION)
if(HAS_FCF_PROTECTION)
target_compile_options(libbtop PUBLIC -fcf-protection)
endif()
target_compile_definitions(libbtop PUBLIC
FMT_HEADER_ONLY
_FILE_OFFSET_BITS=64
$<$<CONFIG:Debug>:_GLIBCXX_ASSERTIONS _LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG>
)
target_include_directories(libbtop SYSTEM PUBLIC include)
# Enable pthreads
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
target_link_libraries(libbtop Threads::Threads)
# Enable GPU support
if(LINUX AND BTOP_GPU)
target_compile_definitions(libbtop PUBLIC GPU_SUPPORT)
if(BTOP_RSMI_STATIC)
# ROCm doesn't properly add it's folders to the module path if `CMAKE_MODULE_PATH` is already
# set
# We could also manually append ROCm's path here
set(_CMAKE_MODULE_PATH CMAKE_MODULE_PATH)
unset(CMAKE_MODULE_PATH)
# NOTE: This might be problematic in the future if other sub projects depend on this or if
# btop starts producing libraries
# Build a static ROCm library
set(BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
add_subdirectory(lib/rocm_smi_lib EXCLUDE_FROM_ALL)
add_library(ROCm INTERFACE)
# Export ROCm's properties to a target
target_compile_definitions(ROCm INTERFACE RSMI_STATIC)
target_include_directories(ROCm INTERFACE lib/rocm_smi_lib/include)
target_link_libraries(ROCm INTERFACE rocm_smi64)
set(CMAKE_MODULE_PATH _CMAKE_MODULE_PATH)
target_link_libraries(libbtop ROCm)
endif()
if(NOT BTOP_STATIC)
target_link_libraries(libbtop ${CMAKE_DL_LIBS})
endif()
endif()
if(BTOP_STATIC)
target_compile_definitions(libbtop PUBLIC STATIC_BUILD)
target_link_options(libbtop PUBLIC -static LINKER:--fatal-warnings)
endif()
# Other platform dependent flags
if(APPLE)
target_link_libraries(libbtop
$<LINK_LIBRARY:FRAMEWORK,CoreFoundation> $<LINK_LIBRARY:FRAMEWORK,IOKit>
)
elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" OR CMAKE_SYSTEM_NAME STREQUAL "MidnightBSD")
# Avoid version mismatch for libstdc++ when a specific version of GCC is installed and not the
# default one since all use the default ones RPATH
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
string(REGEX MATCH "^[0-9]+" GCC_VERSION_MAJOR "${CMAKE_CXX_COMPILER_VERSION}")
set_target_properties(btop PROPERTIES
INSTALL_RPATH "/usr/local/lib/gcc${GCC_VERSION_MAJOR}"
BUILD_WITH_INSTALL_RPATH TRUE
)
# The gcc compiler wrapper doesn't add '--eh-frame-hdr' on FreeBSD with static builds
# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278551
if(BTOP_STATIC)
target_link_options(libbtop PUBLIC LINKER:--eh-frame-hdr)
endif()
endif()
find_package(devstat REQUIRED)
find_package(kvm REQUIRED)
target_link_libraries(libbtop devstat::devstat kvm::kvm)
if(BTOP_STATIC)
find_package(elf REQUIRED)
target_link_libraries(libbtop elf::elf)
endif()
elseif(CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
target_compile_options(libbtop PUBLIC -static-libstdc++)
endif()
find_package(kvm REQUIRED)
target_link_libraries(libbtop kvm::kvm)
elseif(CMAKE_SYSTEM_NAME STREQUAL "NetBSD")
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
target_compile_options(libbtop PUBLIC -static-libstdc++)
endif()
find_package(kvm REQUIRED)
find_package(proplib REQUIRED)
target_link_libraries(libbtop kvm::kvm proplib::proplib)
endif()
# Check if lowdown is installed
find_program(LOWDOWN_EXECUTABLE lowdown)
if(LOWDOWN_EXECUTABLE)
# Custom target to compile Markdown to man page using lowdown
add_custom_command(
OUTPUT btop.1
COMMAND lowdown -s -T man -o btop.1 ${CMAKE_CURRENT_SOURCE_DIR}/manpage.md
DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/manpage.md
VERBATIM
)
add_custom_target(generate_manpage ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/btop.1)
# Install the man page
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/btop.1" DESTINATION "share/man/man1")
else()
message(STATUS "Command 'lowdown' not found: skipping generating man page btop.1")
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")
include(CTest)
if(BUILD_TESTING)
add_subdirectory(tests)
endif()
|
