CMakeLists.txt

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)
    include(cmake/GitVars.cmake)
    include(cmake/BuildTypes.cmake)

    # configure project version
    if (EXISTS "${CMAKE_SOURCE_DIR}/bindings/ios/Makefile-tmpl")
        configure_file(${CMAKE_SOURCE_DIR}/bindings/ios/Makefile-tmpl ${CMAKE_SOURCE_DIR}/bindings/ios/Makefile @ONLY)
    endif()
else()
    set(WHISPER_STANDALONE OFF)
endif()

if (EMSCRIPTEN)
    set(BUILD_SHARED_LIBS_DEFAULT OFF)

    option(WHISPER_WASM_SINGLE_FILE "whisper: embed WASM inside the generated whisper.js" ON)
else()
    if (MINGW)
        set(BUILD_SHARED_LIBS_DEFAULT OFF)
    else()
        set(BUILD_SHARED_LIBS_DEFAULT ON)
    endif()
endif()

# options

option(BUILD_SHARED_LIBS               "whisper: build shared libs" ${BUILD_SHARED_LIBS_DEFAULT})

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_BUILD_EXAMPLES          "whisper: build examples" ${WHISPER_STANDALONE})

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

if (APPLE)
    option(WHISPER_NO_ACCELERATE       "whisper: disable Accelerate framework" OFF)
    option(WHISPER_NO_AVX              "whisper: disable AVX" OFF)
    option(WHISPER_NO_AVX2             "whisper: disable AVX2" OFF)
else()
    option(WHISPER_SUPPORT_OPENBLAS    "whisper: support for OpenBLAS" OFF)
endif()

option(WHISPER_PERF                    "whisper: enable perf timings" 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_OPENBLAS)
    find_library(OPENBLAS_LIB openblas)
    if (OPENBLAS_LIB)
        message(STATUS "OpenBLAS found")

        set(WHISPER_EXTRA_LIBS  ${WHISPER_EXTRA_LIBS}  ${OPENBLAS_LIB})
        set(WHISPER_EXTRA_FLAGS ${WHISPER_EXTRA_FLAGS} -DGGML_USE_OPENBLAS)
    else()
        message(WARNING "OpenBLAS not found")
    endif()
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 ${CMAKE_SYSTEM_PROCESSOR} MATCHES "aarch64")
    message(STATUS "ARM detected")
else()
    message(STATUS "x86 detected")
    if (MSVC)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:AVX2")
        set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /arch:AVX2")
    else()
        if (EMSCRIPTEN)
            # we require support for WASM SIMD 128-bit
            set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -pthread -msimd128")
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
        else()
            if(NOT WHISPER_NO_AVX)
                set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx")
            endif()
            if(NOT WHISPER_NO_AVX2)
                set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mavx2")
            endif()
            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfma -mf16c")
        endif()
    endif()
endif()

if (WHISPER_PERF)
    set(WHISPER_EXTRA_FLAGS ${WHISPER_EXTRA_FLAGS} -DGGML_PERF)
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
    .
    )

if (MSVC)
    target_link_libraries(${TARGET} PRIVATE ${WHISPER_EXTRA_LIBS} ${CMAKE_THREAD_LIBS_INIT})

    set(WHISPER_EXTRA_FLAGS ${WHISPER_EXTRA_FLAGS} -D_CRT_SECURE_NO_WARNINGS)
else()
    target_link_libraries(${TARGET} PRIVATE m ${WHISPER_EXTRA_LIBS} ${CMAKE_THREAD_LIBS_INIT})
endif()

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
    )

#
# bindings
#

add_subdirectory(bindings)

#
# programs, examples and tests
#

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

    if (WHISPER_BUILD_EXAMPLES)
        add_subdirectory(examples)
    endif()
endif ()