1 project('gst-libav', 'c',
3 meson_version : '>= 0.60',
4 default_options : [ 'warning_level=1',
5 'buildtype=debugoptimized' ])
7 gst_version = meson.project_version()
8 version_arr = gst_version.split('.')
9 gst_version_major = version_arr[0].to_int()
10 gst_version_minor = version_arr[1].to_int()
11 gst_version_micro = version_arr[2].to_int()
12 if version_arr.length() == 4
13 gst_version_nano = version_arr[3].to_int()
17 gst_version_is_stable = gst_version_minor.is_even()
18 gst_version_is_dev = gst_version_minor.is_odd() and gst_version_micro < 90
21 libavfilter_dep = dependency('libavfilter', version: '>= 7.16.100',
22 fallback: ['FFmpeg', 'libavfilter_dep'])
23 libavformat_dep = dependency('libavformat', version: '>= 58.12.100',
24 fallback: ['FFmpeg', 'libavformat_dep'])
25 libavcodec_dep = dependency('libavcodec', version: '>= 58.18.100',
26 fallback: ['FFmpeg', 'libavcodec_dep'])
27 libavutil_dep = dependency('libavutil', version: '>= 56.14.100',
28 fallback: ['FFmpeg', 'libavutil_dep'])
30 libav_deps = [libavfilter_dep, libavformat_dep, libavcodec_dep, libavutil_dep]
32 cc = meson.get_compiler('c')
34 check_ffmpeg_src = '''#include <libavcodec/avcodec.h>
35 #if LIBAVCODEC_VERSION_MICRO >= 100
36 /* FFmpeg uses 100+ as its micro version */
38 #error libav provider should be FFmpeg
41 libav_deps_type_name = ''
43 foreach dep: libav_deps
44 if libav_deps_type_name != '' and dep.type_name() != libav_deps_type_name
45 error('Libav deps must be either all internal or all external')
47 libav_deps_type_name = dep.type_name()
50 if dep.type_name() != 'internal'
51 if not cc.compiles(check_ffmpeg_src, dependencies : libav_deps, name : 'libav is provided by FFmpeg')
52 error('Uncompatible libavcodec found')
56 cdata = configuration_data()
57 cdata.set('LIBAV_SOURCE', '"system install"')
58 cdata.set('PACKAGE_VERSION', '"@0@"'.format(gst_version))
59 cdata.set('PACKAGE', '"gst-libav"')
61 # GStreamer package name and origin url
62 gst_package_name = get_option('package-name')
63 if gst_package_name == ''
64 if gst_version_nano == 0
65 gst_package_name = 'GStreamer FFMPEG Plug-ins source release'
66 elif gst_version_nano == 1
67 gst_package_name = 'GStreamer FFMPEG Plug-ins git'
69 gst_package_name = 'GStreamer FFMPEG Plug-ins prerelease'
72 cdata.set_quoted('GST_PACKAGE_NAME', gst_package_name)
73 cdata.set_quoted('GST_PACKAGE_ORIGIN', get_option('package-origin'))
76 check_headers = [['unistd.h', 'HAVE_UNISTD_H']]
78 foreach h : check_headers
79 if cc.has_header(h.get(0))
80 cdata.set(h.get(1), 1)
84 if gst_version_is_stable
85 gst_req = '>= @0@.@1@.0'.format(gst_version_major, gst_version_minor)
87 gst_req = '>= ' + gst_version
90 gst_dep = dependency('gstreamer-1.0', version : gst_req,
91 fallback : ['gstreamer', 'gst_dep'])
92 gstbase_dep = dependency('gstreamer-base-1.0', version : gst_req,
93 fallback : ['gstreamer', 'gst_base_dep'])
94 gstcheck_dep = dependency('gstreamer-check-1.0', version : gst_req,
95 required : get_option('tests'),
96 fallback : ['gstreamer', 'gst_check_dep'])
98 gstvideo_dep = dependency('gstreamer-video-1.0', version : gst_req,
99 fallback : ['gst-plugins-base', 'video_dep'])
100 gstaudio_dep = dependency('gstreamer-audio-1.0', version : gst_req,
101 fallback : ['gst-plugins-base', 'audio_dep'])
102 gstpbutils_dep = dependency('gstreamer-pbutils-1.0', version : gst_req,
103 fallback : ['gst-plugins-base', 'pbutils_dep'])
104 libm = cc.find_library('m', required : false)
106 gst_libav_args = ['-DHAVE_CONFIG_H']
107 if cc.get_id() == 'msvc'
109 # Ignore several spurious warnings for things gstreamer does very commonly
110 # If a warning is completely useless and spammy, use '/wdXXXX' to suppress it
111 # If a warning is harmless but hard to fix, use '/woXXXX' so it's shown once
112 # NOTE: Only add warnings here if you are sure they're spurious
113 '/wd4018', # implicit signed/unsigned conversion
114 '/wd4146', # unary minus on unsigned (beware INT_MIN)
115 '/wd4244', # lossy type conversion (e.g. double -> int)
116 '/wd4305', # truncating type conversion (e.g. double -> float)
117 cc.get_supported_arguments(['/utf-8']), # set the input encoding to utf-8
120 if gst_version_is_dev
121 # Enable some warnings on MSVC to match GCC/Clang behaviour
122 msvc_args += cc.get_supported_arguments([
123 '/we4002', # too many actual parameters for macro 'identifier'
124 '/we4003', # not enough actual parameters for macro 'identifier'
125 '/we4013', # 'function' undefined; assuming extern returning int
126 '/we4020', # 'function' : too many actual parameters
127 '/we4027', # function declared without formal parameter list
128 '/we4029', # declared formal parameter list different from definition
129 '/we4033', # 'function' must return a value
130 '/we4045', # 'array' : array bounds overflow
131 '/we4047', # 'operator' : 'identifier1' differs in levels of indirection from 'identifier2'
132 '/we4053', # one void operand for '?:'
133 '/we4062', # enumerator 'identifier' in switch of enum 'enumeration' is not handled
134 '/we4098', # 'function' : void function returning a value
135 '/we4101', # 'identifier' : unreferenced local variable
136 '/we4189', # 'identifier' : local variable is initialized but not referenced
139 add_project_arguments(msvc_args, language: ['c', 'cpp'])
143 if cc.has_argument('-fvisibility=hidden')
144 add_project_arguments('-fvisibility=hidden', language: 'c')
147 # Don't export any symbols from static ffmpeg libraries
148 if cc.has_link_argument('-Wl,--exclude-libs=ALL')
149 add_project_link_arguments('-Wl,--exclude-libs=ALL', language: 'c')
152 # Disable strict aliasing
153 if cc.has_argument('-fno-strict-aliasing')
154 add_project_arguments('-fno-strict-aliasing', language: 'c')
157 if gst_dep.type_name() == 'internal'
158 gst_proj = subproject('gstreamer')
160 if not gst_proj.get_variable('gst_debug')
161 message('GStreamer debug system is disabled')
162 add_project_arguments('-Wno-unused', language: 'c')
164 message('GStreamer debug system is enabled')
167 # We can't check that in the case of subprojects as we won't
168 # be able to build against an internal dependency (which is not built yet)
169 if not cc.compiles('''
170 #include <gst/gstconfig.h>
171 #ifdef GST_DISABLE_GST_DEBUG
172 #error "debugging disabled, make compiler fail"
173 #endif''' , dependencies: gst_dep)
174 message('GStreamer debug system is disabled')
175 add_project_arguments('-Wno-unused', language: 'c')
177 message('GStreamer debug system is enabled')
182 '-Wmissing-declarations',
183 '-Wmissing-prototypes',
184 '-Wold-style-definition',
189 '-Wformat-nonliteral',
192 '-Wmissing-include-dirs',
195 '-Waggregate-return',
196 '-Wdeclaration-after-statement',
201 foreach extra_arg : warning_flags
202 if cc.has_argument (extra_arg)
203 add_project_arguments([extra_arg], language: 'c')
207 configinc = include_directories('.')
208 plugins_install_dir = '@0@/gstreamer-1.0'.format(get_option('libdir'))
210 pkgconfig = import('pkgconfig')
211 plugins_pkgconfig_install_dir = join_paths(plugins_install_dir, 'pkgconfig')
212 if get_option('default_library') == 'shared'
213 # If we don't build static plugins there is no need to generate pc files
214 plugins_pkgconfig_install_dir = disabler()
223 if gst_version_nano == 0
224 extract_release_date = find_program('scripts/extract-release-date-from-doap-file.py')
225 run_result = run_command(extract_release_date, gst_version, files('gst-libav.doap'), check: true)
226 release_date = run_result.stdout().strip()
227 cdata.set_quoted('GST_PACKAGE_RELEASE_DATETIME', release_date)
228 message('Package release date: ' + release_date)
231 configure_file(output: 'config.h', configuration: cdata)