CMakeLists.txt

################################################################################
cmake_minimum_required(VERSION 3.22)

project(RipuLimiter VERSION 1.0.0)

set(CMAKE_CXX_STANDARD 20)
add_definitions(-D_SILENCE_ALL_CXX23_DEPRECATION_WARNINGS)
set_property(GLOBAL PROPERTY USE_FOLDERS ON)

# IDEs:  Create a folder in the IDE with the JUCE Module code.
option(JUCE_ENABLE_MODULE_SOURCE_GROUPS "Show all module sources in IDE projects" ON)
################################################################################

set(JUCE_TAG "7.0.12")
set(SIGNALSMITH_DSP_TAG "v1.6.0")

set(EXTERNAL_DIR ${CMAKE_CURRENT_SOURCE_DIR}/external)

if (DEFINED ENV{GITHUB_ACTIONS})
    set(JUCE_TAG $ENV{JUCE_TAG})
    set(SIGNALSMITH_DSP_TAG $ENV{SIGNALSMITH_DSP_TAG})
    message("Running in GitHub Actions")
else ()
    if (WIN32)
        include("c:/vcpkg/scripts/buildsystems/vcpkg.cmake")
    else ()
        include("~/vcpkg/scripts/buildsystems/vcpkg.cmake")
    endif ()
endif ()

find_package(Git REQUIRED)
if (GIT_FOUND)
    execute_process(
        COMMAND ${GIT_EXECUTABLE} rev-parse --is-inside-work-tree
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
        OUTPUT_VARIABLE IS_GIT_REPO
        OUTPUT_STRIP_TRAILING_WHITESPACE
        ERROR_QUIET
    )

    if (IS_GIT_REPO STREQUAL "true")
        execute_process(
            COMMAND ${GIT_EXECUTABLE} describe --tags --abbrev=0
            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
            OUTPUT_VARIABLE GIT_LATEST_TAG
            OUTPUT_STRIP_TRAILING_WHITESPACE
        )

        if (NOT "${GIT_LATEST_TAG}" STREQUAL "")
            string(REGEX REPLACE "[^0-9.]" "" GIT_LATEST_TAG ${GIT_LATEST_TAG})
        endif ()

        if (NOT "${GIT_LATEST_TAG}" STREQUAL "")
            project(${PROJECT_NAME} VERSION ${GIT_LATEST_TAG} LANGUAGES C CXX)
        endif ()

        execute_process(
            COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive
            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
            RESULT_VARIABLE GIT_SUBMOD_RESULT
        )

    else ()
        execute_process(
            COMMAND ${GIT_EXECUTABLE} init .
            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
            RESULT_VARIABLE GIT_SUBMOD_RESULT
        )
    endif ()
endif ()
message("Project version: ${PROJECT_VERSION}")

if (NOT DEFINED BUILD_NUMBER)
    set(BUILD_NUMBER 0)
endif ()

if (NOT DEFINED GIT_TAG)
    set(GIT_TAG 0)
    set(BUILD_NUMBER 0)
endif ()

string(TIMESTAMP BUILD_DATE "%Y%m%d")

if (APPLE AND CMAKE_OSX_ARCHITECTURES MATCHES "i386")
    message("Building for 32-bit macOS")
    set(FILE_URL "https://releases.llvm.org/5.0.2/libcxx-5.0.2.src.tar.xz")
    set(FILE_PATH "${EXTERNAL_DIR}/libcxx-5.0.2.src.tar.xz")

    file(DOWNLOAD ${FILE_URL} ${FILE_PATH}
        STATUS status
        LOG log)

    execute_process(COMMAND tar -xf ${FILE_PATH} -C ${EXTERNAL_DIR}
        RESULT_VARIABLE result)

    file(COPY ${EXTERNAL_DIR}/libcxx-5.0.2.src/include/variant
        ${EXTERNAL_DIR}/libcxx-5.0.2.src/include/optional
        DESTINATION ${EXTERNAL_DIR}/libcxx-5.0.2.src)

    file(APPEND "./JUCE//CMakeLists.txt"
        "target_include_directories(juceaide INTERFACE \"../libcxx-5.0.2.src\")\n")

    file(READ "./JUCE//CMakeLists.txt" content)
    set(content "include_directories(BEFORE \"../libcxx-5.0.2.src\")\n${content}")
    file(WRITE "./JUCE//CMakeLists.txt" "${content}")

    execute_process(
        COMMAND bash -c "find ./JUCE/ -type f -name '*.h' -exec gsed -i '/Xcode 10.1\\+/d' {} \\;"
        RESULT_VARIABLE result
    )
endif ()


file(MAKE_DIRECTORY ${EXTERNAL_DIR}/signalsmith)

execute_process(
    COMMAND ${GIT_EXECUTABLE} submodule add https://github.com/Signalsmith-Audio/dsp
    WORKING_DIRECTORY ${EXTERNAL_DIR}/signalsmith
    ERROR_QUIET
)

execute_process(
    COMMAND ${GIT_EXECUTABLE} checkout ${SIGNALSMITH_DSP_TAG}
    WORKING_DIRECTORY ${EXTERNAL_DIR}/signalsmith/dsp
)

execute_process(
    COMMAND ${GIT_EXECUTABLE} submodule add https://github.com/juce-framework/JUCE.git
    WORKING_DIRECTORY ${EXTERNAL_DIR}
    ERROR_QUIET
)

execute_process(
    COMMAND ${GIT_EXECUTABLE} checkout ${JUCE_TAG}
    WORKING_DIRECTORY ${EXTERNAL_DIR}/JUCE
)

################################################################################

add_subdirectory(external/JUCE)

juce_add_plugin("${PROJECT_NAME}"
    FORMATS AU VST3 Standalone                  # The formats to build. Valid formats: Standalone Unity VST3 AU AUv3 AAX VST LV2.
    # AU and AUv3 plugins will only be enabled when building on macOS.
    PRODUCT_NAME "${PROJECT_NAME}"              # The name of the final executable, which can differ from the target name.
    PLUGIN_NAME "${PROJECT_NAME}"              # Name of the plugin that will be displayed in the DAW. Can differ from PRODUCT_NAME.

    # ICON_BIG                                  # ICON_* arguments specify a path to an image file to use as an icon for the Standalone.
    # ICON_SMALL
    COMPANY_NAME ak5k                           # The name of this target's author. The value is inherited from JUCE_COMPANY_NAME.
    # COMPANY_WEBSITE                           # The address of a website related to this target in some way.
    # The value is inherited from JUCE_COMPANY_WEBSITE.
    # COMPANY_EMAIL                             # An email address for this target's author. The value is inherited from JUCE_COMPANY_EMAIL.
    PLUGIN_MANUFACTURER_CODE Ak5k               # A four-character manufacturer id with at least one upper-case character.
    # GarageBand 10.3 requires the first letter to be upper-case, and the remaining letters to be lower-case.
    PLUGIN_CODE R1pu                            # A unique four-character plugin id with exactly one upper-case character.
    # GarageBand 10.3 requires the first letter to be upper-case, and the remaining letters to be lower-case.

    IS_SYNTH FALSE                              # Is this a synth or an effect?
    NEEDS_MIDI_INPUT FALSE                      # Does the plugin need midi input?
    NEEDS_MIDI_OUTPUT FALSE                     # Does the plugin need midi output?
    IS_MIDI_EFFECT FALSE                        # Is this plugin a MIDI effect?
    EDITOR_WANTS_KEYBOARD_FOCUS FALSE           # Does the editor need keyboard focus?

    VST3_CATEGORIES Dynamics                    # Should be one or more, separated by spaces, of the following:
    # Fx, Instrument, Analyzer, Delay, Distortion, Drum, Dynamics, EQ, External,
    # Filter, Generator, Mastering, Modulation, Mono, Network, NoOfflineProcess,
    # OnlyOfflineProcess, OnlyRT, Pitch Shift, Restoration, Reverb, Sampler, Spatial,
    # Stereo, Surround, Synth, Tools, Up-Downmix
    # AU_MAIN_TYPE                              # Should be one or more, separated by spaces, of the following:
    # kAudioUnitType_Effect, kAudioUnitType_FormatConverter, kAudioUnitType_Generator,
    # kAudioUnitType_MIDIProcessor, kAudioUnitType_Mixer, kAudioUnitType_MusicDevice,
    # kAudioUnitType_MusicEffect, kAudioUnitType_OfflineEffect, kAudioUnitType_Output,
    # kAudioUnitType_Panner
    AU_COPY_DIR "/Library/Audio/Plug-Ins/Components" # The subdirectory to copy the AU plugin into (macOS only)

    COPY_PLUGIN_AFTER_BUILD TRUE)               # Should the plugin be installed to a default location after building?
# NOTE: Writing to the default install locations might require administrator privileges on Windows.

juce_generate_juce_header(${PROJECT_NAME})

target_compile_definitions("${PROJECT_NAME}"
    PUBLIC
    # JUCE_WEB_BROWSER and JUCE_USE_CURL would be on by default, but you might not need them.
    JUCE_WEB_BROWSER=0  # If you remove this, add `NEEDS_WEB_BROWSER TRUE` to the `juce_add_plugin` call
    JUCE_USE_CURL=0     # If you remove this, add `NEEDS_CURL TRUE` to the `juce_add_plugin` call
    JUCE_SILENCE_XCODE_15_LINKER_WARNING=1
    JUCE_VST3_CAN_REPLACE_VST2=0)

target_link_libraries("${PROJECT_NAME}"
    PRIVATE
    # Assets                # If we'd created a binary data target, we'd link to it here
    juce::juce_audio_utils
    juce::juce_opengl
    juce::juce_dsp
    PUBLIC
    juce::juce_recommended_config_flags
    juce::juce_recommended_lto_flags
    juce::juce_recommended_warning_flags)

file(GLOB_RECURSE SOURCES CONFIGURE_DEPENDS
    ./Source/*.c
    ./Source/*.cpp
    ./Source/*.h
    ./Source/*.hpp
)

target_sources(${PROJECT_NAME}
    PRIVATE
    "${SOURCES}"
)

################################################################################

if (MSVC)
    if (CMAKE_BUILD_TYPE STREQUAL "Release")
        target_compile_options(${PROJECT_NAME} PUBLIC /Qpar /arch:AVX2)
    endif()
else ()
    string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" LOWERCASE_PROCESSOR)
    if (NOT APPLE AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
    if(NOT $ENV{ARCH} MATCHES "^(arm.*|aarch64.*)$")
        message("${LOWERCASE_PROCESSOR}")
        message("clang and not apple and not arm/aarch")
        target_compile_options(${PROJECT_NAME} PUBLIC -march=x86-64-v3
        )
    endif()
    endif()
    message("non-msvc compiler interface")
    set(MY_FLAGS
        -Wall
        -Wextra
        -Wno-float-conversion
        -Wno-implicit-int-float-conversion
        -Wno-shadow 
        -Wno-sign-compare
        -Wno-sign-conversion
        -Wno-shorten-64-to-32
        -Wno-unused-parameter
        -Wno-unused-private-field
        -Wno-unused-variable
    )
    string(JOIN " " MY_FLAGS_STR ${MY_FLAGS})
    set_source_files_properties(${SOURCES}
        PROPERTIES COMPILE_FLAGS
        "${MY_FLAGS_STR}"
    )
endif ()


target_include_directories(${PROJECT_NAME}
    SYSTEM PRIVATE
    "${EXTERNAL_DIR}"
)

if (APPLE AND CMAKE_OSX_ARCHITECTURES MATCHES "i386")
    target_include_directories(${PROJECT_NAME}
        SYSTEM PUBLIC
        "${EXTERNAL_DIR}/libcxx-5.0.2.src/"
    )
endif ()

################################################################################
# precompiled headers seem to be excluded from code analysis
# this may 'suppress all code analysis warnings' in the precompiled headers
file(GLOB_RECURSE HEADERS CONFIGURE_DEPENDS
    "${EXTERNAL_DIR}/signalsmith/*.h*"
)

message("")