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# 2018 (c) Juan G. Victores, Bartek Ćukawski, Stephen Sinclair
# CopyPolicy: RtMidi license.
# Set minimum CMake required version for this project.
cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
# Define a C++ project.
project(RtMidi LANGUAGES CXX)
# Check for Jack (any OS)
find_library(JACK_LIB jack)
find_package(PkgConfig)
pkg_check_modules(jack jack)
if(JACK_LIB OR jack_FOUND)
set(HAVE_JACK TRUE)
endif()
# Necessary for Windows
if(WIN32)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
endif()
# Standard CMake options
option(BUILD_SHARED_LIBS "Build as shared library" ON)
if (NOT CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE)
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug;Release;RelWithDebInfo;MinSizeRel")
endif()
if(WINDOWS)
set(CMAKE_DEBUG_POSTFIX d CACHE STRING "Postfix for debug version of library")
endif()
# Build Options
set(RTMIDI_TARGETNAME_UNINSTALL "uninstall" CACHE STRING "Name of 'uninstall' build target")
# API Options
option(RTMIDI_API_JACK "Compile with JACK support." ${HAVE_JACK})
if(UNIX AND NOT APPLE)
option(RTMIDI_API_ALSA "Compile with ALSA support." ON)
endif()
option(RTMIDI_API_WINMM "Compile with WINMM support." ${WIN32})
option(RTMIDI_API_CORE "Compile with CoreMIDI support." ${APPLE})
# Add -Wall if possible
if (CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
endif (CMAKE_COMPILER_IS_GNUCXX)
# Add debug flags
if (CMAKE_BUILD_TYPE STREQUAL "Debug")
add_definitions(-D__RTMIDI_DEBUG__)
if (CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
endif (CMAKE_COMPILER_IS_GNUCXX)
endif ()
# Read libtool version info from configure.ac
set(R "m4_define\\(\\[lt_([a-z]+)\\], ([0-9]+)\\)")
file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/configure.ac" CONFIGAC
REGEX ${R})
foreach(_S ${CONFIGAC})
string(REGEX REPLACE ${R} "\\1" k ${_S})
string(REGEX REPLACE ${R} "\\2" v ${_S})
set(SO_${k} ${v})
endforeach()
math(EXPR SO_current_minus_age "${SO_current} - ${SO_age}")
set(SO_VER "${SO_current_minus_age}")
set(FULL_VER "${SO_current_minus_age}.${SO_revision}.${SO_age}")
# Read package version info from configure.ac
set(R "AC_INIT\\(RtMidi, ([0-9\\.]+),.*\\)")
file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/configure.ac" CONFIGAC
REGEX ${R})
string(REGEX REPLACE ${R} "\\1" PACKAGE_VERSION ${CONFIGAC})
# Init variables
set(rtmidi_SOURCES RtMidi.cpp RtMidi.h rtmidi_c.cpp rtmidi_c.h)
set(LINKLIBS)
set(INCDIRS)
set(PKGCONFIG_REQUIRES)
set(API_DEFS)
set(API_LIST)
# Tweak API-specific configuration.
# Jack
if(RTMIDI_API_JACK)
if (NOT HAVE_JACK)
message(FATAL_ERROR "Jack API requested but no Jack dev libraries found")
endif()
set(NEED_PTHREAD ON)
list(APPEND PKGCONFIG_REQUIRES "jack")
list(APPEND API_DEFS "-D__UNIX_JACK__")
list(APPEND API_LIST "jack")
if(jack_FOUND)
list(APPEND LINKLIBS ${jack_LIBRARIES})
list(APPEND INCDIRS ${jack_INCLUDEDIR})
else()
list(APPEND LINKLIBS ${JACK_LIB})
endif()
# Check for jack_port_rename
include(CheckSymbolExists)
set(tmp_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
list(APPEND CMAKE_REQUIRED_LIBRARIES jack)
check_symbol_exists(jack_port_rename ${jack_INCLUDEDIR}/jack/jack.h JACK_HAS_PORT_RENAME)
set(CMAKE_REQUIRED_LIBRARIES ${tmp_CMAKE_REQUIRED_LIBRARIES})
if(JACK_HAS_PORT_RENAME)
list(APPEND API_DEFS "JACK_HAS_PORT_RENAME")
endif()
endif()
# ALSA
if(RTMIDI_API_ALSA)
set(NEED_PTHREAD ON)
find_package(ALSA)
if (NOT ALSA_FOUND)
message(FATAL_ERROR "ALSA API requested but no ALSA dev libraries found")
endif()
list(APPEND INCDIRS ${ALSA_INCLUDE_DIR})
list(APPEND LINKLIBS ${ALSA_LIBRARY})
list(APPEND PKGCONFIG_REQUIRES "alsa")
list(APPEND API_DEFS "-D__LINUX_ALSA__")
list(APPEND API_LIST "alsa")
endif()
# WinMM
if(RTMIDI_API_WINMM)
list(APPEND API_DEFS "-D__WINDOWS_MM__")
list(APPEND API_LIST "winmm")
list(APPEND LINKLIBS winmm)
endif()
# CoreMIDI
if(RTMIDI_API_CORE)
list(APPEND API_DEFS "-D__MACOSX_CORE__")
list(APPEND API_LIST "coremidi")
list(APPEND LINKLIBS "-framework CoreServices")
list(APPEND LINKLIBS "-framework CoreAudio")
list(APPEND LINKLIBS "-framework CoreMIDI")
list(APPEND LINKLIBS "-framework CoreFoundation")
list(APPEND LINKFLAGS "-Wl,-F/Library/Frameworks")
endif()
# pthread
if (NEED_PTHREAD)
find_package(Threads REQUIRED
CMAKE_THREAD_PREFER_PTHREAD
THREADS_PREFER_PTHREAD_FLAG)
list(APPEND LINKLIBS Threads::Threads)
endif()
# Create library targets.
cmake_policy(SET CMP0042 OLD)
set(LIB_TARGETS)
# Use RTMIDI_BUILD_SHARED_LIBS / RTMIDI_BUILD_STATIC_LIBS if they
# are defined, otherwise default to standard BUILD_SHARED_LIBS.
if (DEFINED RTMIDI_BUILD_SHARED_LIBS AND NOT RTMIDI_BUILD_SHARED_LIBS STREQUAL "")
if (RTMIDI_BUILD_SHARED_LIBS)
add_library(rtmidi SHARED ${rtmidi_SOURCES})
else()
add_library(rtmidi STATIC ${rtmidi_SOURCES})
endif()
elseif (DEFINED RTMIDI_BUILD_STATIC_LIBS AND NOT RTMIDI_BUILD_STATIC_LIBS STREQUAL "")
if (RTMIDI_BUILD_STATIC_LIBS)
add_library(rtmidi STATIC ${rtmidi_SOURCES})
else()
add_library(rtmidi SHARED ${rtmidi_SOURCES})
endif()
else()
add_library(rtmidi ${rtmidi_SOURCES})
endif()
list(APPEND LIB_TARGETS rtmidi)
# Add headers destination for install rule.
set_target_properties(rtmidi PROPERTIES PUBLIC_HEADER RtMidi.h
SOVERSION ${SO_VER}
VERSION ${FULL_VER})
# Set include paths, populate target interface.
target_include_directories(rtmidi PRIVATE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
${INCDIRS})
# Set compile-time definitions
target_compile_definitions(rtmidi PRIVATE ${API_DEFS})
target_compile_definitions(rtmidi PRIVATE RTMIDI_EXPORT)
target_link_libraries(rtmidi ${LINKLIBS})
# Set standard installation directories.
include(GNUInstallDirs)
# Add tests if requested.
include(CTest)
if (NOT DEFINED RTMIDI_BUILD_TESTING OR RTMIDI_BUILD_TESTING STREQUAL "")
set(RTMIDI_BUILD_TESTING ${BUILD_TESTING})
endif()
if (RTMIDI_BUILD_TESTING)
add_executable(cmidiin tests/cmidiin.cpp)
add_executable(midiclock tests/midiclock.cpp)
add_executable(midiout tests/midiout.cpp)
add_executable(midiprobe tests/midiprobe.cpp)
add_executable(qmidiin tests/qmidiin.cpp)
add_executable(sysextest tests/sysextest.cpp)
add_executable(apinames tests/apinames.cpp)
list(GET LIB_TARGETS 0 LIBRTMIDI)
set_target_properties(cmidiin midiclock midiout midiprobe qmidiin sysextest apinames
PROPERTIES RUNTIME_OUTPUT_DIRECTORY tests
INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}
LINK_LIBRARIES ${LIBRTMIDI})
add_test(NAME apinames COMMAND apinames)
endif()
# Set standard installation directories.
include(GNUInstallDirs)
# Message
string(REPLACE ";" " " apilist "${API_LIST}")
message(STATUS "Compiling with support for: ${apilist}")
# PkgConfig file
string(REPLACE ";" " " req "${PKGCONFIG_REQUIRES}")
string(REPLACE ";" " " api "${API_DEFS}")
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/rtmidi.pc.in" "rtmidi.pc" @ONLY)
# Add install rule.
install(TARGETS ${LIB_TARGETS}
EXPORT RtMidiTargets
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
# Store the package in the user registry.
export(PACKAGE RtMidi)
# Set installation path for CMake files.
set(RTMIDI_CMAKE_DESTINATION share/rtmidi)
# Create CMake configuration export file.
if(NEED_PTHREAD)
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/RtMidiConfig.cmake "find_package(Threads REQUIRED)\n")
endif()
file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/RtMidiConfig.cmake "include(\${CMAKE_CURRENT_LIST_DIR}/RtMidiTargets.cmake)")
# Install CMake configuration export file.
install(FILES ${CMAKE_BINARY_DIR}/RtMidiConfig.cmake
DESTINATION ${RTMIDI_CMAKE_DESTINATION})
# Export library target (build-tree).
export(EXPORT RtMidiTargets
NAMESPACE RtMidi::)
# Export library target (install-tree).
install(EXPORT RtMidiTargets
DESTINATION ${RTMIDI_CMAKE_DESTINATION}
NAMESPACE RtMidi::)
# Configure uninstall target.
configure_file(
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/RtMidiConfigUninstall.cmake.in"
"${CMAKE_BINARY_DIR}/RtMidiConfigUninstall.cmake" @ONLY)
# Create uninstall target.
add_custom_target(${RTMIDI_TARGETNAME_UNINSTALL}
COMMAND ${CMAKE_COMMAND} -P ${CMAKE_BINARY_DIR}/RtMidiConfigUninstall.cmake)
install(
FILES ${CMAKE_CURRENT_BINARY_DIR}/rtmidi.pc
DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
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