482 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			Meson
		
	
	
	
	
	
			
		
		
	
	
			482 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			Meson
		
	
	
	
	
	
| project('gstreamer-full', 'c',
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|   version : '1.21.0.1',
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|   meson_version : '>= 0.60.0',
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|   default_options : ['buildtype=debugoptimized',
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|                      # Needed due to https://github.com/mesonbuild/meson/issues/1889,
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|                      # but this can cause problems in the future. Remove it
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|                      # when it's no longer necessary.
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|                      'cpp_std=c++14'])
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| 
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| apiversion = '1.0'
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| gst_version = '>= @0@'.format(meson.project_version())
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| 
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| build_system = build_machine.system()
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| cc = meson.get_compiler('c')
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| 
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| fs = import('fs')
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| gnome = import('gnome')
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| pkgconfig = import('pkgconfig')
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| python3 = import('python').find_installation()
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| # Ensure that we're not being run from inside the development environment
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| # because that will confuse meson, and it might find the already-built
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| # gstreamer. It's fine if people run `ninja` as long as it doesn't run
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| # reconfigure because ninja doesn't care about the env.
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| ensure_not_devenv = '''
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| import os
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| assert('GST_ENV' not in os.environ)
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| '''
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| cmdres = run_command(python3, '-c', ensure_not_devenv, check: false)
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| if cmdres.returncode() != 0
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|   error('Do not run `ninja reconfigure` or `meson` for gst-build inside the development environment, you will run into problems')
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| endif
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| 
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| # Install gst-indent pre-commit hook
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| run_command(python3, '-c', 'import shutil; shutil.copy("scripts/git-hooks/multi-pre-commit.hook", ".git/hooks/pre-commit")', check: false)
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| 
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| # Ensure that the user does not have Strawberry Perl in PATH, since it ships
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| # with a pkg-config.bat and broken pkgconfig files for libffi and zlib. Will
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| # cause a build error, such as in
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| # https://gitlab.freedesktop.org/gstreamer/gst-build/-/issues/41
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| ensure_no_strawberry_perl = '''
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| import os
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| assert(r'Strawberry\perl\bin' not in os.environ['PATH'])
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| '''
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| if build_system == 'windows' and meson.version().version_compare('<0.60.0')
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|   cmdres = run_command(python3, '-c', ensure_no_strawberry_perl, check: false)
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|   if cmdres.returncode() != 0
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|     error('You have Strawberry Perl in PATH which is known to cause build issues with Meson < 0.60.0. Please remove it from PATH, uninstall it, or upgrade Meson.')
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|   endif
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| endif
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| 
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| documented_projects = ''
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| # Make it possible to use msys2 built zlib which fails
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| # when not using the mingw toolchain as it uses unistd.h
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| if not meson.is_subproject() and cc.get_id() == 'msvc'
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|   uname = find_program('uname', required: false)
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|   if uname.found()
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|     ret = run_command(uname, '-o', check: false)
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|     if ret.returncode() == 0 and ret.stdout().to_lower() == 'msys'
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|       ret = run_command(uname, '-r', check: false)
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|       # The kernel version returned by uname is actually the msys version
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|       if ret.returncode() == 0 and ret.stdout().startswith('2')
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|         # If a system zlib is found, disable UNIX features in zlib.h and zconf.h
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|         if cc.find_library('z').found()
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|           add_global_arguments('-DZ_SOLO', language: 'c')
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|         endif
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|       endif
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|     endif
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|   endif
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| endif
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| 
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| # Ensure that MSVC interprets all source code as UTF-8. Only do this when we're
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| # not a subproject, because subprojects are not allowed to call
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| # add_global_arguments().
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| if not meson.is_subproject() and cc.get_id() == 'msvc'
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|   add_global_arguments(
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|       cc.get_supported_arguments(['/utf-8']), # set the input encoding to utf-8
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|       language: ['c', 'cpp'])
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| endif
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| 
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| building_full = get_option('default_library') == 'static'
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| tools_option = 'tools=auto'
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| if building_full and not get_option('tools').disabled()
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|   # Do not build subprojects tools when we build them against gst-full
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|   tools_option = 'tools=disabled'
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| endif
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| 
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| # Ordered list of subprojects (dict has no ordering guarantees)
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| subprojects = [
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|   ['gstreamer', {'build-hotdoc': true, 'subproject_options': [tools_option]}],
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|   ['gst-plugins-base', {'option': get_option('base'), 'build-hotdoc': true}],
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|   ['gst-plugins-good', {'option': get_option('good'), 'build-hotdoc': true}],
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|   ['libnice', { 'option': get_option('libnice'), 'match_gst_version': false}],
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|   ['gst-plugins-bad', { 'option': get_option('bad'), 'build-hotdoc': true}],
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|   ['gst-plugins-ugly', { 'option': get_option('ugly'), 'build-hotdoc': true}],
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|   ['gst-libav', { 'option': get_option('libav'), 'build-hotdoc': true}],
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|   ['gst-rtsp-server', { 'option': get_option('rtsp_server'), 'build-hotdoc': true}],
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|   ['gst-devtools', { 'option': get_option('devtools'), 'build-hotdoc': true, 'subproject_options': [tools_option]}],
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|   ['gst-integration-testsuites', { 'option': get_option('devtools') }],
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|   ['gst-editing-services', { 'option': get_option('ges'), 'build-hotdoc': true, 'subproject_options': [tools_option]}],
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|   ['gstreamer-vaapi', { 'option': get_option('vaapi'), 'build-hotdoc': true}],
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|   ['gst-omx', { 'option': get_option('omx'), 'build-hotdoc': true}],
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|   ['gstreamer-sharp', { 'option': get_option('sharp') }],
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|   ['pygobject', { 'option': get_option('python'), 'match_gst_version': false, 'sysdep': 'pygobject-3.0', 'sysdep_version': '>= 3.8' }],
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|   ['gst-python', { 'option': get_option('python')}],
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|   ['gst-examples', { 'option': get_option('gst-examples'), 'match_gst_versions': false}],
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|   ['gst-plugins-rs', { 'option': get_option('rs'), 'match_gst_version': false}],
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| ]
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| 
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| symlink = '''
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| import os
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| 
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| os.symlink(os.path.join('@1@', 'subprojects', '@0@'),
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|   os.path.join('@1@', '@0@'))
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| '''
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| 
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| if build_system == 'windows'
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|   subproject('win-flex-bison-binaries')
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|   subproject('win-nasm')
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| elif build_system == 'darwin'
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|   subproject('macos-bison-binary')
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| endif
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| 
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| orc_subproject = subproject('orc', required: get_option('orc'))
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| 
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| foreach custom_subproj: get_option('custom_subprojects').split(',')
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|     if custom_subproj != ''
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|         message ('Adding custom subproject ' + custom_subproj)
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|         subprojects += [[custom_subproj, {'match_gst_version': false}]]
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|     endif
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| endforeach
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| 
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| 
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| subprojects_names = []
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| plugins_doc_caches = []
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| orc_update_targets = []
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| all_plugins = []
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| all_tools = {}
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| # Using a list and not a dict to keep the ordering to build the chain of `gir`
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| # dependencies
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| all_libraries = []
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| foreach sp : subprojects
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|   project_name = sp[0]
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|   build_infos = sp[1]
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|   is_required = build_infos.get('option', true)
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|   sysdep = build_infos.get('sysdep', '')
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|   sysdep_version = build_infos.get('sysdep_version', '')
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|   match_gst_version = build_infos.get('match_gst_version', true)
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|   default_options =  build_infos.get('subproject_options', [])
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| 
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|   if match_gst_version
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|     subproj = subproject(project_name, version: gst_version, required: is_required, default_options: default_options)
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|   elif sysdep != ''
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|       sysdep_dep = dependency(sysdep, version: sysdep_version, required: false, default_options: default_options)
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|       if not sysdep_dep.found()
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|         subproj = subproject(project_name, required: is_required, default_options: default_options)
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|       endif
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|   else
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|     subproj = subproject(project_name, required: is_required, default_options: default_options)
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|   endif
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| 
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|   if subproj.found()
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|     plugins = subproj.get_variable('plugins', [])
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|     all_plugins += plugins
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|     all_libraries += subproj.get_variable('libraries', [])
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|     if not get_option('tools').disabled()
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|       all_tools += subproj.get_variable('gst_tools', {})
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|     endif
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| 
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|     orc_update_targets += subproj.get_variable('orc_update_targets', [])
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| 
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|     subprojects_names += [project_name]
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| 
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|     if not meson.is_cross_build() and build_infos.get('build-hotdoc', false)
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|       if plugins.length() > 0
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|         plugins_doc_caches += [subproj.get_variable('plugins_doc_dep', [])]
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|       endif
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|       if documented_projects != ''
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|         documented_projects += ','
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|       endif
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|       documented_projects  += project_name
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|     endif
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|   endif
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| endforeach
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| 
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| # Check if we need to also build glib-networking for TLS modules
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| glib_dep = dependency('glib-2.0')
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| if glib_dep.type_name() == 'internal'
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|   subproject('glib-networking', required : get_option('tls'),
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|              default_options: ['gnutls=auto', 'openssl=auto'])
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| endif
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| 
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| plugins_doc_dep = custom_target('plugins-doc-cache',
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|   command: [python3, '-c', 'print("Built all doc caches")'],
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|   input: plugins_doc_caches,
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|   output: 'plugins_doc_caches',
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|   capture: true,
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| )
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| 
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| if meson.is_cross_build() or build_machine.system() == 'windows'
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|     if get_option('doc').enabled()
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|         error('Documentation enabled but building the doc while cross building or building on windows is not supported yet.')
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|     endif
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| 
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|     documented_projects = ''
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|     message('Documentation not built as building the documentation while cross building or building on windows is not supported yet.')
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| else
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|   hotdoc_p = find_program('hotdoc', required : get_option('doc'))
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|   if not hotdoc_p.found()
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|     documented_projects = ''
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|     message('Not building documentation as hotdoc was not found')
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|   endif
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| endif
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| 
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| write_file_contents = '''
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| import os
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| import sys
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| 
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| assert len(sys.argv) >= 3
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| fname = sys.argv[1]
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| contents = sys.argv[2]
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| 
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| with open(fname, 'w') as f:
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|     f.write(contents)
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| '''
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| 
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| configure_file(
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|   output : 'GstDocumentedSubprojects',
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|   command : [python3,
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|              '-c', write_file_contents,
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|              '@OUTPUT@',
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|              documented_projects]
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| )
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| 
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| if documented_projects != ''
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|   subproject('gst-docs', required: get_option('doc').enabled())
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|   message('Gst docs subprojects: ' + documented_projects)
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| endif
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| 
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| all_plugins_paths = []
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| all_plugins_dirs = []
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| foreach plugin: all_plugins
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|   all_plugins_paths += plugin.full_path()
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|   all_plugins_dirs += fs.parent(plugin.full_path())
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| endforeach
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| # Work around meson bug: https://github.com/mesonbuild/meson/pull/6770
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| pathsep = host_machine.system() == 'windows' ? ';' : ':'
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| all_plugins_paths = pathsep.join(all_plugins_paths)
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| 
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| devenv = environment()
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| devenv.prepend('GST_PLUGIN_PATH', all_plugins_dirs)
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| devenv.set('CURRENT_GST', meson.current_source_dir())
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| devenv.set('GST_VERSION', meson.project_version())
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| devenv.set('GST_ENV', 'gst-' + meson.project_version())
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| devenv.set('GST_REGISTRY', meson.current_build_dir() / 'registry.dat')
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| devenv.set('GST_PLUGIN_SYSTEM_PATH', '')
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| meson.add_devenv(devenv)
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| 
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| generate_plugins_paths = find_program('scripts/generate_plugins_path.py')
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| configure_file(
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|   output : 'GstPluginsPath.json',
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|   command : [generate_plugins_paths,
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|              '@OUTPUT@',
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|              all_plugins_paths]
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| )
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| 
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| if building_full
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|   cdata = configuration_data()
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|   cdata.set_quoted('GST_API_VERSION', apiversion)
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|   cdata.set_quoted('GETTEXT_PACKAGE', 'gstreamer-full-1.0')
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|   cdata.set_quoted('PACKAGE_VERSION', gst_version)
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|   cdata.set_quoted('GST_PACKAGE_ORIGIN', get_option('package-origin'))
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|   configure_file(output : 'config.h', configuration : cdata)
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|   configinc = include_directories('.')
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|   gst_c_args = ['-DHAVE_CONFIG_H']
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| 
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|   # Generate a .c file which declare and register all built plugins
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|   plugins_names = []
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|   foreach plugin: all_plugins
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|     plugins_names += plugin.full_path()
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|   endforeach
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|   all_plugin_names = ';'.join(plugins_names)
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| 
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|   static_plugins = get_option('gst-full-plugins')
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|   if static_plugins == '*'
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|     static_plugins = all_plugin_names
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|   endif
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|   generate_init_static_plugins = find_program('scripts/generate_init_static_plugins.py')
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|   init_static_plugins_c = configure_file(
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|     output: 'gstinitstaticplugins.c',
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|     command : [generate_init_static_plugins,
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|                '-o ' + '@OUTPUT@',
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|                '-p ' + static_plugins,
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|                '-e ' + get_option('gst-full-elements'),
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|                '-t ' + get_option('gst-full-typefind-functions'),
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|                '-d ' + get_option('gst-full-device-providers'),
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|                '-T ' + get_option('gst-full-dynamic-types')
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|                ]
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|   )
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| 
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|   gstfull_link_args = cc.get_supported_link_arguments(['-Wl,-Bsymbolic-functions'])
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| 
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|   # Get a list of libraries that needs to be exposed in the ABI.
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|   exposed_libs = []
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|   exposed_deps = []
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|   exposed_girs = []
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|   incdir_deps = []
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|   wanted_libs = ['gstreamer-1.0'] + get_option('gst-full-libraries')
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|   all_libs = '*' in wanted_libs
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| 
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|   foreach pkgname_library : all_libraries
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|     pkg_name = pkgname_library[0]
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|     lib_def = pkgname_library[1]
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| 
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|     if pkg_name in wanted_libs or all_libs
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|       if lib_def.has_key('lib')
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|         exposed_deps += dependency(pkg_name)
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|         incdir_deps += dependency(pkg_name).partial_dependency(includes: true, sources: true)
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|         exposed_libs += [lib_def['lib']]
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|       endif
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| 
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|       if lib_def.has_key('gir')
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|         exposed_girs += lib_def['gir']
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|       endif
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|     endif
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|   endforeach
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| 
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|   # glib and gobject are part of our public API. If we are using glib from the
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|   # system then our pkg-config file must require it. If we built it as
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|   # subproject then we need to link_whole it.
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|   glib_deps = []
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|   glib_dep = dependency('glib-2.0')
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|   gobject_dep = dependency('gobject-2.0')
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|   if gobject_dep.type_name() == 'internal'
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|     glib_subproject = subproject('glib')
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|     exposed_libs += glib_subproject.get_variable('libglib')
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|     exposed_libs += glib_subproject.get_variable('libgobject')
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|     incdir_deps += [
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|       glib_dep.partial_dependency(includes: true),
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|       gobject_dep.partial_dependency(includes: true),
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|     ]
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|   else
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|     glib_deps = [glib_dep, gobject_dep]
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|   endif
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| 
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|   link_deps = []
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|   if get_option('gst-full-version-script') != ''
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|     symbol_map = meson.current_source_dir() / get_option('gst-full-version-script')
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|     link_arg = '-Wl,--version-script=' + symbol_map
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|     if cc.has_link_argument(link_arg)
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|       gstfull_link_args += link_arg
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|       link_deps += symbol_map
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|     elif cc.get_id() == 'msvc'
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|       warning('FIXME: Provide a def file to publish the public symbols')
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|     else
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|       warning('FIXME: Linker does not support the supplied version script (' + symbol_map + '), please disable the "gst-full-version-script" option')
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|     endif
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|   endif
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| 
 | |
|   # Build both shared and static library
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|   gstfull = both_libraries('gstreamer-full-1.0',
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|     init_static_plugins_c,
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|     link_with : all_plugins,
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|     link_args: gstfull_link_args,
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|     link_whole : exposed_libs,
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|     dependencies : incdir_deps + glib_deps,
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|     link_depends : link_deps,
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|     install : true,
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|   )
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| 
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|   gst_full_dep = declare_dependency(link_with: gstfull.get_shared_lib(),
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|     dependencies : incdir_deps + glib_deps,
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|     include_directories: include_directories('.')
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|   )
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| 
 | |
|   gst_full_libs_private = cc.get_supported_link_arguments(['-Wl,--undefined=gst_init_static_plugins'])
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|   if gst_full_libs_private == []
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|     warning('The compiler does not support `-Wl,--undefined` linker flag. The method `gst_init_static_plugins` might be dropped during the link stage of an application using libgstreamer-full-1.0.a, preventing plugins registration.')
 | |
|   endif
 | |
| 
 | |
|   if not get_option('introspection').disabled()
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|     built_girs = {}
 | |
|     foreach gir: exposed_girs
 | |
|       includes = []
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|       foreach include: gir.get('includes', [])
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|         includes += [built_girs.get(include, include)]
 | |
|       endforeach
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| 
 | |
|       gir += {
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|         'includes': includes,
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|         'extra_args': gir.get('extra_args', []) + ['--add-include-path=' + meson.current_build_dir()],
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|         'install': true,
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|       }
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|       built_girs += {gir.get('namespace') + '-' + gir.get('nsversion'): gnome.generate_gir(gstfull, kwargs: gir)[0]}
 | |
|     endforeach
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|   endif
 | |
| 
 | |
|   pkgconfig.generate(gstfull,
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|     requires: glib_deps,
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|     libraries_private: gst_full_libs_private,
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|     subdirs : 'gstreamer-1.0')
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|   meson.override_dependency('gstreamer-full-1.0', gst_full_dep)
 | |
| 
 | |
|   if not get_option('tools').disabled()
 | |
|     foreach tool, data: all_tools
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|       exe_name = '@0@-@1@'.format(tool, apiversion)
 | |
|       extra_args = data.get('extra_c_args', [])
 | |
|       sources = data.get('files')
 | |
|       deps = []
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|       foreach d : data.get('deps', [])
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|         if d not in exposed_deps
 | |
|           deps += d
 | |
|         endif
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|       endforeach
 | |
| 
 | |
|       executable(exe_name,
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|         sources,
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|         install: true,
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|         include_directories : [configinc],
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|         dependencies : [gst_full_dep] + deps,
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|         c_args: extra_args + gst_c_args + ['-DG_LOG_DOMAIN="@0@"'.format(exe_name)],
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|       )
 | |
| 
 | |
|       if data.has_key('man_page')
 | |
|         install_man(data.get('man_page'))
 | |
|       endif
 | |
| 
 | |
|     endforeach
 | |
|   endif
 | |
| endif
 | |
| 
 | |
| message('Building subprojects: ' + ', '.join(subprojects_names))
 | |
| 
 | |
| setenv = find_program('gst-env.py')
 | |
| 
 | |
| devenv_cmd = [setenv, '--builddir=@0@'.format(meson.global_build_root()),
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|               '--srcdir=@0@'.format(meson.global_source_root())]
 | |
| 
 | |
| subdir('tests')
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| subdir('ci/fuzzing')
 | |
| 
 | |
| if meson.can_run_host_binaries() and build_machine.system() == 'linux' and host_machine.system() == 'windows'
 | |
|   # FIXME: Ideally we could get the wrapper directly from meson
 | |
|   devenv_cmd += ['--wine', host_machine.cpu_family() == 'x86_64' ? 'wine64' : 'wine32']
 | |
|   sysroot = meson.get_cross_property('sys_root')
 | |
|   if sysroot != ''
 | |
|     # Logic from meson
 | |
|     devenv_cmd += ['--winepath', 'Z:' + join_paths(sysroot, 'bin')]
 | |
|   endif
 | |
| endif
 | |
| 
 | |
| run_target('devenv', command : devenv_cmd)
 | |
| 
 | |
| if orc_subproject.found() and orc_update_targets.length() > 0
 | |
|   alias_target('update-orc-dist', orc_update_targets)
 | |
| endif
 | |
| 
 | |
| dotnet_format = find_program('dotnet-format', required: false)
 | |
| if dotnet_format.found()
 | |
|     run_target('csharp_format_check',
 | |
|         command: [join_paths(meson.current_source_dir(), 'scripts', 'format-csharp'),
 | |
|             '--check'
 | |
|         ],
 | |
|     )
 | |
|     run_target('csharp_format_apply',
 | |
|         command: [join_paths(meson.current_source_dir(), 'scripts', 'format-csharp'),
 | |
|         ],
 | |
|     )
 | |
| endif
 | |
| 
 | |
| summary({
 | |
|   'gstreamer-full library': building_full,
 | |
| }, section: 'Build options', bool_yn: true, list_sep: '  ')
 | |
| 
 | |
| gst_tools = []
 | |
| foreach tool, data: all_tools
 | |
|   gst_tools += tool
 | |
| endforeach
 | |
| 
 | |
| summary({
 | |
|     'Tools': gst_tools,
 | |
| }, section: 'Build options', list_sep: ', ')
 |