h264decoder/CMakeLists.txt at master · Faculty-of-Science-Technology/h264decoder · GitHub

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cmake_minimum_required(VERSION 3.60)
project(h264decoder)

set(CMAKE_BUILD_TYPE Debug)
set(CMAKE_EXPORT_COMPILE_COMMANDS TRUE)
set(BuildExamples False CACHE BOOL "Build the examples")
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
set(CMAKE_CXX_STANDARD 17)

if(NOT WIN32)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wpedantic -Wno-deprecated-declarations")
endif()

# Not working on Windows
#   find_package(PkgConfig REQUIRED)
#   pkg_check_modules(libswscale REQUIRED libswscale)
#   pkg_check_modules(libavutil REQUIRED libavutil)
#   pkg_check_modules(libavcodec REQUIRED libavcodec)
#
# Not on Ubuntu ...
# find_package(FFMPEG REQUIRED swscale avutil avcodec)
# So we do it more low level
find_path(AVCODEC_INCLUDE_DIR libavcodec/avcodec.h)
find_library(AVCODEC_LIBRARY avcodec)
find_path(AVUTIL_INCLUDE_DIR libavutil/avutil.h)
find_library(AVUTIL_LIBRARY avutil)
find_path(SWSCALE_INCLUDE_DIR libswscale/swscale.h)
find_library(SWSCALE_LIBRARY swscale)

set(FFMPEG_LIBRARIES ${AVCODEC_LIBRARY} ${AVUTIL_LIBRARY} ${SWSCALE_LIBRARY})
set(FFMPEG_INCLUDE_DIR ${AVCODEC_INCLUDE_DIR} ${AVUTIL_INCLUDE_DIR} ${SWSCALE_INCLUDE_DIR})

find_package(pybind11)
if(pybind11_FOUND)
    message("Using existing pybind11 v${pybind11_VERSION}")
else()
    message("Fetching pybind11")
    include(FetchContent)
    FetchContent_Declare(
        pybind11
        GIT_REPOSITORY https://github.com/pybind/pybind11
        GIT_TAG v2.13.6)
    FetchContent_MakeAvailable(pybind11)
endif()

add_library(h264decoderlib STATIC src/h264decoder.cpp src/h264decoder.hpp)
target_sources(h264decoderlib PUBLIC
    FILE_SET HEADERS
    BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/src
    FILES ${CMAKE_CURRENT_SOURCE_DIR}/src/h264decoder.hpp)
target_link_libraries(h264decoderlib PUBLIC ${FFMPEG_LIBRARIES})
target_include_directories(h264decoderlib PUBLIC ${FFMPEG_INCLUDE_DIR})
target_include_directories(h264decoderlib PUBLIC "src")

pybind11_add_module(h264decoder src/h264decoder_python.cpp)
target_link_libraries(h264decoder PRIVATE h264decoderlib)

if(BuildExamples)
    add_subdirectory(examples)
endif()