# 2018 (c) Juan G. Victores, Bartek Łukawski, Stephen Sinclair
# CopyPolicy: RtMidi license.
# additional modifications for Furnace by tildearrow.

# Set minimum CMake required version for this project.
cmake_minimum_required(VERSION 3.5)

# Define a C++ project.
project(RtMidi LANGUAGES CXX C)

# standards version
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

# Check for Jack (any OS)
# RtMidi JACK is not going to be used as I will use my own JACK MIDI implementation.
set(HAVE_JACK FALSE)
#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" OFF)

#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(PUBLICLINKLIBS)
set(INCDIRS)
set(PKGCONFIG_REQUIRES)
set(LIBS_REQUIRES)
set(API_DEFS)
set(API_LIST)

# Tweak API-specific configuration.

# 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)
  find_library(CORESERVICES_LIB CoreServices)
  find_library(COREAUDIO_LIB CoreAudio)
  find_library(COREMIDI_LIB CoreMIDI)
  find_library(COREFOUNDATION_LIB CoreFoundation)
  list(APPEND API_DEFS "-D__MACOSX_CORE__")
  list(APPEND API_LIST "coremidi")
  list(APPEND LINKLIBS ${CORESERVICES_LIB} ${COREAUDIO_LIB} ${COREMIDI_LIB} ${COREFOUNDATION_LIB})
  list(APPEND LIBS_REQUIRES "-framework CoreServices -framework CoreAudio -framework CoreMIDI -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 PUBLICLINKLIBS Threads::Threads)
endif()

# Create library targets.
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_property(TARGET rtmidi PROPERTY PUBLIC_HEADER RtMidi.h rtmidi_c.h)
#set_target_properties(rtmidi PROPERTIES
#  SOVERSION ${SO_VER}
#  VERSION ${FULL_VER})

# Set include paths, populate target interface.
target_include_directories(rtmidi PRIVATE ${INCDIRS}
                                  PUBLIC
                                    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
                                    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)

# Set compile-time definitions
target_compile_definitions(rtmidi PRIVATE ${API_DEFS})
target_compile_definitions(rtmidi PRIVATE RTMIDI_EXPORT)
target_link_libraries(rtmidi PUBLIC ${PUBLICLINKLIBS} 
                             PRIVATE ${LINKLIBS})

# Set standard installation directories.
#include(GNUInstallDirs)

# Add tests if requested.
#option(RTMIDI_BUILD_TESTING "Build test programs" ON)
#if (NOT DEFINED RTMIDI_BUILD_TESTING OR RTMIDI_BUILD_TESTING STREQUAL "")
#  set(RTMIDI_BUILD_TESTING ${BUILD_TESTING})
#endif()
#if (RTMIDI_BUILD_TESTING)
#  include(CTest)
#  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)
#  add_executable(testcapi   tests/testcapi.c)
#  list(GET LIB_TARGETS 0 LIBRTMIDI)
#  set_target_properties(cmidiin midiclock midiout midiprobe qmidiin sysextest apinames testcapi
#    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 "${PKGCONFIG_REQUIRES}")
#string(REPLACE ";" " " req_libs "${LIBS_REQUIRES}")
#string(REPLACE ";" " " api "${API_DEFS}")
#set(prefix ${CMAKE_INSTALL_PREFIX})
#configure_file("${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}/rtmidi)

# Store the package in the user registry.
#export(PACKAGE RtMidi)

# Set installation path for CMake files.
#set(RTMIDI_CMAKE_DESTINATION share/rtmidi)

# 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)

# Set up CMake package
#include(CMakePackageConfigHelpers)

# Write cmake package version file
#write_basic_package_version_file(
#    RtMidi-config-version.cmake
#    VERSION ${FULL_VER}
#    COMPATIBILITY SameMajorVersion
#)

# Write cmake package config file
#configure_package_config_file (
#    cmake/RtMidi-config.cmake.in
#    RtMidi-config.cmake
#    INSTALL_DESTINATION "${RTMIDI_CMAKE_DESTINATION}"
#)

# Install package files
#install (
#    FILES
#        "${CMAKE_CURRENT_BINARY_DIR}/RtMidi-config.cmake"
#        "${CMAKE_CURRENT_BINARY_DIR}/RtMidi-config-version.cmake"
#    DESTINATION
#        "${RTMIDI_CMAKE_DESTINATION}"
#)