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cmake_minimum_required (VERSION 3.0)
project(whisper.cpp VERSION 1.0.0)

set(CMAKE_EXPORT_COMPILE_COMMANDS "on")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")

if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
    set(WHISPER_STANDALONE ON)
else()
    set(WHISPER_STANDALONE OFF)
endif()

# options

option(WHISPER_ALL_WARNINGS            "whisper: enable all compiler warnings"                   ON)
option(WHISPER_ALL_WARNINGS_3RD_PARTY  "whisper: enable all compiler warnings in 3rd party libs" OFF)

option(WHISPER_SANITIZE_THREAD         "whisper: enable thread sanitizer"    OFF)
option(WHISPER_SANITIZE_ADDRESS        "whisper: enable address sanitizer"   OFF)
option(WHISPER_SANITIZE_UNDEFINED      "whisper: enable undefined sanitizer" OFF)

option(WHISPER_BUILD_TESTS             "whisper: build tests" ${WHISPER_STANDALONE})

option(WHISPER_SUPPORT_SDL2            "whisper: support for libSDL2" OFF)

option(WHISPER_PERF                    "whisper: enable perf timings"          OFF)
option(WHISPER_NO_ACCELERATE           "whisper: disable Accelerate framework" OFF)

# sanitizers

if (NOT MSVC)
    if (WHISPER_SANITIZE_THREAD)
        set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS} -fsanitize=thread")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread")
    endif()

    if (WHISPER_SANITIZE_ADDRESS)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}     -fsanitize=address -fno-omit-frame-pointer")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
    endif()

    if (WHISPER_SANITIZE_UNDEFINED)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}     -fsanitize=undefined")
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined")
    endif()
endif()

#set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffast-math")
#set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=native")

# dependencies

set(CMAKE_C_STANDARD   11)
set(CMAKE_CXX_STANDARD 20)

find_package(Threads REQUIRED)

# on APPLE - include Accelerate framework
if (APPLE AND NOT WHISPER_NO_ACCELERATE)
    find_library(ACCELERATE_FRAMEWORK Accelerate)
    if (ACCELERATE_FRAMEWORK)
        message(STATUS "Accelerate framework found")

        set(WHISPER_EXTRA_LIBS  ${WHISPER_EXTRA_LIBS}  ${ACCELERATE_FRAMEWORK})
        set(WHISPER_EXTRA_FLAGS ${WHISPER_EXTRA_FLAGS} -DGGML_USE_ACCELERATE)
    else()
        message(WARNING "Accelerate framework not found")
    endif()
endif()

if (WHISPER_SUPPORT_SDL2)
    # SDL2
    find_package(SDL2 REQUIRED)

    string(STRIP "${SDL2_LIBRARIES}" SDL2_LIBRARIES)

    message(STATUS "SDL2_INCLUDE_DIRS = ${SDL2_INCLUDE_DIRS}")
    message(STATUS "SDL2_LIBRARIES = ${SDL2_LIBRARIES}")
endif()

# compiler flags

if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
    set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "RelWithDebInfo")
endif ()

if (WHISPER_ALL_WARNINGS)
    if (NOT MSVC)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} \
            -Wall                           \
            -Wextra                         \
            -Wpedantic                      \
            -Wshadow                        \
            -Wcast-qual                     \
            -Wstrict-prototypes             \
            -Wpointer-arith                 \
        ")
    else()
        # todo : msvc
    endif()
endif()

if (NOT MSVC)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror=vla")
    #set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-math-errno -ffinite-math-only -funsafe-math-optimizations")
endif()

message(STATUS "CMAKE_SYSTEM_PROCESSOR: ${CMAKE_SYSTEM_PROCESSOR}")

if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "arm" OR ${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch64")
    message(STATUS "ARM detected")
else()
    message(STATUS "x86 detected")
    if (MSVC)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /arch:AVX2 /D_CRT_SECURE_NO_WARNINGS=1")
    else()
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx -mavx2 -mfma -mf16c")
    endif()
endif()

# whisper - this is the main library of the project

set(TARGET whisper)

add_library(${TARGET}
    ggml.c
    whisper.cpp
    )

target_include_directories(${TARGET} PUBLIC
    .
    )

target_link_libraries(${TARGET} PRIVATE m ${WHISPER_EXTRA_LIBS} ${CMAKE_THREAD_LIBS_INIT})

if (BUILD_SHARED_LIBS)
    target_link_libraries(${TARGET} PUBLIC
        ${CMAKE_DL_LIBS}
        )

    target_compile_definitions(${TARGET} PUBLIC
        WHISPER_SHARED
        )
endif()

target_compile_definitions(${TARGET} PUBLIC
    ${WHISPER_EXTRA_FLAGS}
    )

install(TARGETS ${TARGET}
    LIBRARY DESTINATION lib
    ARCHIVE DESTINATION lib/static
    )

# programs, examples and tests

if (WHISPER_STANDALONE)
    # main
    set(TARGET main)
    add_executable(${TARGET} main.cpp)
    target_link_libraries(${TARGET} PRIVATE whisper ${CMAKE_THREAD_LIBS_INIT})

    if (WHISPER_SUPPORT_SDL2)
        # stream
        set(TARGET stream)
        add_executable(${TARGET} stream.cpp)
        target_include_directories(${TARGET} PRIVATE ${SDL2_INCLUDE_DIRS})
        target_link_libraries(${TARGET} PRIVATE whisper ${SDL2_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
    endif ()

    if (WHISPER_BUILD_TESTS)
        enable_testing()
        add_subdirectory(tests)
    endif ()
endif ()