project('gst-libav', 'c', version : '1.21.90', meson_version : '>= 0.62', default_options : [ 'warning_level=1', 'buildtype=debugoptimized' ]) gst_version = meson.project_version() version_arr = gst_version.split('.') gst_version_major = version_arr[0].to_int() gst_version_minor = version_arr[1].to_int() gst_version_micro = version_arr[2].to_int() if version_arr.length() == 4 gst_version_nano = version_arr[3].to_int() else gst_version_nano = 0 endif gst_version_is_stable = gst_version_minor.is_even() gst_version_is_dev = gst_version_minor.is_odd() and gst_version_micro < 90 api_version = '1.0' libavfilter_dep = dependency('libavfilter', version: '>= 7.16.100', fallback: ['FFmpeg', 'libavfilter_dep']) libavformat_dep = dependency('libavformat', version: '>= 58.12.100', fallback: ['FFmpeg', 'libavformat_dep']) libavcodec_dep = dependency('libavcodec', version: '>= 58.18.100', fallback: ['FFmpeg', 'libavcodec_dep']) libavutil_dep = dependency('libavutil', version: '>= 56.14.100', fallback: ['FFmpeg', 'libavutil_dep']) libav_deps = [libavfilter_dep, libavformat_dep, libavcodec_dep, libavutil_dep] cc = meson.get_compiler('c') static_build = get_option('default_library') == 'static' check_ffmpeg_src = '''#include #if LIBAVCODEC_VERSION_MICRO >= 100 /* FFmpeg uses 100+ as its micro version */ #else #error libav provider should be FFmpeg #endif''' libav_deps_type_name = '' foreach dep: libav_deps if libav_deps_type_name != '' and dep.type_name() != libav_deps_type_name error('Libav deps must be either all internal or all external') endif libav_deps_type_name = dep.type_name() endforeach if dep.type_name() != 'internal' if not cc.compiles(check_ffmpeg_src, dependencies : libav_deps, name : 'libav is provided by FFmpeg') error('Uncompatible libavcodec found') endif endif cdata = configuration_data() cdata.set('LIBAV_SOURCE', '"system install"') cdata.set('PACKAGE_VERSION', '"@0@"'.format(gst_version)) cdata.set('PACKAGE', '"gst-libav"') # GStreamer package name and origin url gst_package_name = get_option('package-name') if gst_package_name == '' if gst_version_nano == 0 gst_package_name = 'GStreamer FFMPEG Plug-ins source release' elif gst_version_nano == 1 gst_package_name = 'GStreamer FFMPEG Plug-ins git' else gst_package_name = 'GStreamer FFMPEG Plug-ins prerelease' endif endif cdata.set_quoted('GST_PACKAGE_NAME', gst_package_name) cdata.set_quoted('GST_PACKAGE_ORIGIN', get_option('package-origin')) check_headers = [['unistd.h', 'HAVE_UNISTD_H']] foreach h : check_headers if cc.has_header(h.get(0)) cdata.set(h.get(1), 1) endif endforeach if gst_version_is_stable gst_req = '>= @0@.@1@.0'.format(gst_version_major, gst_version_minor) else gst_req = '>= ' + gst_version endif gst_dep = dependency('gstreamer-1.0', version : gst_req, fallback : ['gstreamer', 'gst_dep']) gstbase_dep = dependency('gstreamer-base-1.0', version : gst_req, fallback : ['gstreamer', 'gst_base_dep']) gstcheck_dep = dependency('gstreamer-check-1.0', version : gst_req, required : get_option('tests'), fallback : ['gstreamer', 'gst_check_dep']) gstvideo_dep = dependency('gstreamer-video-1.0', version : gst_req, fallback : ['gst-plugins-base', 'video_dep']) gstaudio_dep = dependency('gstreamer-audio-1.0', version : gst_req, fallback : ['gst-plugins-base', 'audio_dep']) gstpbutils_dep = dependency('gstreamer-pbutils-1.0', version : gst_req, fallback : ['gst-plugins-base', 'pbutils_dep']) libm = cc.find_library('m', required : false) gst_libav_args = ['-DHAVE_CONFIG_H'] if cc.get_id() == 'msvc' msvc_args = [ # Ignore several spurious warnings for things gstreamer does very commonly # If a warning is completely useless and spammy, use '/wdXXXX' to suppress it # If a warning is harmless but hard to fix, use '/woXXXX' so it's shown once # NOTE: Only add warnings here if you are sure they're spurious '/wd4018', # implicit signed/unsigned conversion '/wd4146', # unary minus on unsigned (beware INT_MIN) '/wd4244', # lossy type conversion (e.g. double -> int) '/wd4305', # truncating type conversion (e.g. double -> float) cc.get_supported_arguments(['/utf-8']), # set the input encoding to utf-8 ] if gst_version_is_dev # Enable some warnings on MSVC to match GCC/Clang behaviour msvc_args += cc.get_supported_arguments([ '/we4002', # too many actual parameters for macro 'identifier' '/we4003', # not enough actual parameters for macro 'identifier' '/we4013', # 'function' undefined; assuming extern returning int '/we4020', # 'function' : too many actual parameters '/we4027', # function declared without formal parameter list '/we4029', # declared formal parameter list different from definition '/we4033', # 'function' must return a value '/we4045', # 'array' : array bounds overflow '/we4047', # 'operator' : 'identifier1' differs in levels of indirection from 'identifier2' '/we4053', # one void operand for '?:' '/we4062', # enumerator 'identifier' in switch of enum 'enumeration' is not handled '/we4098', # 'function' : void function returning a value '/we4101', # 'identifier' : unreferenced local variable '/we4189', # 'identifier' : local variable is initialized but not referenced ]) endif add_project_arguments(msvc_args, language: ['c', 'cpp']) endif # glib doesn't support unloading, which means that unloading and reloading # any library that registers static types will fail if cc.has_link_argument('-Wl,-z,nodelete') add_project_link_arguments('-Wl,-z,nodelete', language: 'c') endif # Symbol visibility if cc.has_argument('-fvisibility=hidden') add_project_arguments('-fvisibility=hidden', language: 'c') endif # Don't export any symbols from static ffmpeg libraries if cc.has_link_argument('-Wl,--exclude-libs=ALL') add_project_link_arguments('-Wl,--exclude-libs=ALL', language: 'c') endif # Disable strict aliasing if cc.has_argument('-fno-strict-aliasing') add_project_arguments('-fno-strict-aliasing', language: 'c') endif if gst_dep.type_name() == 'internal' gst_proj = subproject('gstreamer') if not gst_proj.get_variable('gst_debug') message('GStreamer debug system is disabled') add_project_arguments('-Wno-unused', language: 'c') else message('GStreamer debug system is enabled') endif else # We can't check that in the case of subprojects as we won't # be able to build against an internal dependency (which is not built yet) if not cc.compiles(''' #include #ifdef GST_DISABLE_GST_DEBUG #error "debugging disabled, make compiler fail" #endif''' , dependencies: gst_dep) message('GStreamer debug system is disabled') add_project_arguments('-Wno-unused', language: 'c') else message('GStreamer debug system is enabled') endif endif warning_flags = [ '-Wmissing-declarations', '-Wmissing-prototypes', '-Wold-style-definition', '-Wredundant-decls', '-Wundef', '-Wwrite-strings', '-Wformat', '-Wformat-nonliteral', '-Wformat-security', '-Winit-self', '-Wmissing-include-dirs', '-Waddress', '-Wno-multichar', '-Waggregate-return', '-Wvla', '-Wpointer-arith', ] foreach extra_arg : warning_flags if cc.has_argument (extra_arg) add_project_arguments([extra_arg], language: 'c') endif endforeach configinc = include_directories('.') plugins_install_dir = '@0@/gstreamer-1.0'.format(get_option('libdir')) pkgconfig = import('pkgconfig') plugins_pkgconfig_install_dir = join_paths(plugins_install_dir, 'pkgconfig') if get_option('default_library') == 'shared' # If we don't build static plugins there is no need to generate pc files plugins_pkgconfig_install_dir = disabler() endif plugins = [] subdir('ext/libav') subdir('docs') subdir('tests') # Set release date if gst_version_nano == 0 extract_release_date = find_program('scripts/extract-release-date-from-doap-file.py') run_result = run_command(extract_release_date, gst_version, files('gst-libav.doap'), check: true) release_date = run_result.stdout().strip() cdata.set_quoted('GST_PACKAGE_RELEASE_DATETIME', release_date) message('Package release date: ' + release_date) endif configure_file(output: 'config.h', configuration: cdata) meson.add_dist_script('scripts/gen-changelog.py', meson.project_name(), '1.20.0', meson.project_version()) gst_plugins = [] foreach plugin: plugins pkgconfig.generate(plugin, install_dir: plugins_pkgconfig_install_dir) dep = declare_dependency(link_with: plugin, variables: {'full_path': plugin.full_path()}) meson.override_dependency(plugin.name(), dep) gst_plugins += [dep] endforeach