gstreamer/meson.build
Tim-Philipp Müller e87857a210 Back to development
2023-01-25 16:46:42 +00:00

525 lines
19 KiB
Meson

project('gstreamer-full', 'c',
version : '1.22.0.1',
meson_version : '>= 0.62.0',
default_options : ['buildtype=debugoptimized',
# Needed due to https://github.com/mesonbuild/meson/issues/1889,
# but this can cause problems in the future. Remove it
# when it's no longer necessary.
'cpp_std=c++14'])
apiversion = '1.0'
gst_version = '>= @0@'.format(meson.project_version())
build_system = build_machine.system()
cc = meson.get_compiler('c')
fs = import('fs')
gnome = import('gnome')
pkgconfig = import('pkgconfig')
python3 = import('python').find_installation()
# Ensure that we're not being run from inside the development environment
# because that will confuse meson, and it might find the already-built
# gstreamer. It's fine if people run `ninja` as long as it doesn't run
# reconfigure because ninja doesn't care about the env.
ensure_not_devenv = '''
import os
assert('GST_ENV' not in os.environ)
'''
cmdres = run_command(python3, '-c', ensure_not_devenv, check: false)
if cmdres.returncode() != 0
error('Do not run `ninja reconfigure` or `meson` for gst-build inside the development environment, you will run into problems')
endif
# Install gst-indent pre-commit hook
run_command(python3, '-c', 'import shutil; shutil.copy("scripts/git-hooks/multi-pre-commit.hook", ".git/hooks/pre-commit")', check: false)
# On macOS, you have to run "Install Certificates.command" otherwise Python
# doesn't have access to the latest SSL CA Certificates, and Meson will fail to
# download wrap files from websites that use, for example, Let's Encrypt.
# We already recommend this in the README, but add a warning here as well.
# Can't make this an error because the user might be using XCode's Python
# 3 which doesn't have this script.
if build_system == 'darwin'
python3_cacert_file = python3.get_path('data') / 'etc/openssl/cert.pem'
install_cert_cmd = '/Applications/Python @0@/Install Certificates.command'.format(python3.language_version())
if not fs.is_symlink(python3_cacert_file) and fs.is_file(install_cert_cmd)
warning('Please run "@0@" so that Python has access to the latest SSL certificates. Meson might fail to download some wraps without it.'.format(install_cert_cmd))
endif
endif
documented_projects = ''
# Make it possible to use msys2 built zlib which fails
# when not using the mingw toolchain as it uses unistd.h
if not meson.is_subproject() and cc.get_id() == 'msvc'
uname = find_program('uname', required: false)
if uname.found()
ret = run_command(uname, '-o', check: false)
if ret.returncode() == 0 and ret.stdout().to_lower() == 'msys'
ret = run_command(uname, '-r', check: false)
# The kernel version returned by uname is actually the msys version
if ret.returncode() == 0 and ret.stdout().startswith('2')
# If a system zlib is found, disable UNIX features in zlib.h and zconf.h
if cc.find_library('z').found()
add_global_arguments('-DZ_SOLO', language: 'c')
endif
endif
endif
endif
endif
# Ensure that MSVC interprets all source code as UTF-8. Only do this when we're
# not a subproject, because subprojects are not allowed to call
# add_global_arguments().
if not meson.is_subproject() and cc.get_id() == 'msvc'
add_global_arguments(
cc.get_supported_arguments(['/utf-8']), # set the input encoding to utf-8
language: ['c', 'cpp'])
endif
building_full = get_option('default_library') == 'static'
tools_option = []
if building_full and not get_option('tools').disabled()
# Do not build subprojects tools when we build them against gst-full
tools_option = ['tools=disabled']
endif
# Ordered list of subprojects (dict has no ordering guarantees)
subprojects = [
['gstreamer', {'build-hotdoc': true, 'subproject_options': tools_option}],
['gst-plugins-base', {'option': get_option('base'), 'build-hotdoc': true}],
['gst-plugins-good', {'option': get_option('good'), 'build-hotdoc': true}],
['libnice', { 'option': get_option('libnice'), 'match_gst_version': false}],
['gst-plugins-bad', { 'option': get_option('bad'), 'build-hotdoc': true}],
['gst-plugins-ugly', { 'option': get_option('ugly'), 'build-hotdoc': true}],
['gst-libav', { 'option': get_option('libav'), 'build-hotdoc': true}],
['gst-rtsp-server', { 'option': get_option('rtsp_server'), 'build-hotdoc': true}],
['gst-devtools', { 'option': get_option('devtools'), 'build-hotdoc': true, 'subproject_options': tools_option}],
['gst-integration-testsuites', { 'option': get_option('devtools') }],
['gst-editing-services', { 'option': get_option('ges'), 'build-hotdoc': true, 'subproject_options': tools_option}],
['gstreamer-vaapi', { 'option': get_option('vaapi'), 'build-hotdoc': true}],
['gst-omx', { 'option': get_option('omx'), 'build-hotdoc': true}],
['gstreamer-sharp', { 'option': get_option('sharp') }],
['pygobject', { 'option': get_option('python'), 'match_gst_version': false, 'sysdep': 'pygobject-3.0', 'sysdep_version': '>= 3.8' }],
['gst-python', { 'option': get_option('python')}],
['gst-examples', { 'option': get_option('gst-examples'), 'match_gst_versions': false}],
['gst-plugins-rs', { 'option': get_option('rs'), 'build-hotdoc': true, 'match_gst_version': false}],
]
if build_system == 'windows'
subproject('win-flex-bison-binaries')
subproject('win-nasm')
elif build_system == 'darwin'
subproject('macos-bison-binary')
endif
orc_option = get_option('orc')
# There is a check below to keep this in sync with subprojects/gst-plugins-base/meson.build
orc_req = '>= 0.4.24'
orc_source_option = get_option('orc-source')
orc_subproject = disabler()
if orc_option.allowed()
if orc_source_option == 'subproject'
orc_subproject = subproject('orc', required: orc_option)
else
dependency('orc-0.4', version: orc_req, required: orc_option,
allow_fallback: orc_source_option == 'auto')
endif
endif
foreach custom_subproj: get_option('custom_subprojects').split(',')
if custom_subproj != ''
message ('Adding custom subproject ' + custom_subproj)
subprojects += [[custom_subproj, {'match_gst_version': false}]]
endif
endforeach
subprojects_names = []
plugins_doc_caches = []
orc_update_targets = []
all_plugins = []
all_tools = {}
# Using a list and not a dict to keep the ordering to build the chain of `gir`
# dependencies
all_libraries = []
foreach sp : subprojects
project_name = sp[0]
build_infos = sp[1]
is_required = build_infos.get('option', true)
sysdep = build_infos.get('sysdep', '')
sysdep_version = build_infos.get('sysdep_version', '')
match_gst_version = build_infos.get('match_gst_version', true)
default_options = build_infos.get('subproject_options', [])
if match_gst_version
subproj = subproject(project_name, version: gst_version, required: is_required, default_options: default_options)
elif sysdep != ''
sysdep_dep = dependency(sysdep, version: sysdep_version, required: false, default_options: default_options)
if not sysdep_dep.found()
subproj = subproject(project_name, required: is_required, default_options: default_options)
endif
else
subproj = subproject(project_name, required: is_required, default_options: default_options)
endif
if project_name == 'gst-plugins-base'
gst_base_orc_req = subproj.get_variable('orc_req', '')
if gst_base_orc_req != orc_req
error('orc_req is "@0@" but it should be "@1@" from subprojects/gst-plugins-base/meson.build'
.format(orc_req, gst_base_orc_req))
endif
endif
if subproj.found()
plugins = subproj.get_variable('gst_plugins', [])
legacy_plugins = subproj.get_variable('plugins', [])
all_plugins += plugins
if plugins.length() == 0 and legacy_plugins.length() > 0
warning(f'DEPRECATED use of the `plugins` variable in @project_name@.')
warning('The variable should now be called `gst_plugins` and use:')
warning('`declare_dependency( link_with: <plugin_target>, variable: {\'full_path\': <plugin_target>.full_path()})` instead')
foreach plugin: legacy_plugins
all_plugins += [declare_dependency(link_with: plugin, variables: {'full_path': plugin.full_path()})]
endforeach
endif
all_libraries += subproj.get_variable('gst_libraries', [])
if not get_option('tools').disabled()
all_tools += subproj.get_variable('gst_tools', {})
endif
orc_update_targets += subproj.get_variable('orc_update_targets', [])
subprojects_names += [project_name]
if not meson.is_cross_build() and build_infos.get('build-hotdoc', false)
plugins_doc_caches += [subproj.get_variable('gst_plugins_doc_dep', [])]
if documented_projects != ''
documented_projects += ','
endif
documented_projects += project_name
endif
endif
endforeach
# Check if we need to also build glib-networking for TLS modules
giomodules = []
glib_dep = dependency('glib-2.0')
if glib_dep.type_name() == 'internal'
subp = subproject('glib-networking', required : get_option('tls'),
default_options: ['gnutls=auto', 'openssl=auto'])
if subp.found()
giomodules += subp.get_variable('giomodules', [])
endif
endif
gst_plugins_doc_dep = custom_target('plugins-doc-cache',
command: [python3, '-c', 'print("Built all doc caches")'],
input: plugins_doc_caches,
output: 'plugins_doc_caches',
capture: true,
)
if meson.is_cross_build() or build_machine.system() == 'windows'
if get_option('doc').enabled()
error('Documentation enabled but building the doc while cross building or building on windows is not supported yet.')
endif
documented_projects = ''
message('Documentation not built as building the documentation while cross building or building on windows is not supported yet.')
else
hotdoc_p = find_program('hotdoc', required : get_option('doc'))
if not hotdoc_p.found()
documented_projects = ''
message('Not building documentation as hotdoc was not found')
endif
endif
write_file_contents = '''
import os
import sys
assert len(sys.argv) >= 3
fname = sys.argv[1]
contents = sys.argv[2]
with open(fname, 'w') as f:
f.write(contents)
'''
configure_file(
output : 'GstDocumentedSubprojects',
command : [python3,
'-c', write_file_contents,
'@OUTPUT@',
documented_projects]
)
if documented_projects != ''
gst_doc = subproject('gst-docs', required: get_option('doc').enabled())
if gst_doc.found()
gst_doc_target = gst_doc.get_variable('gstreamer_doc')
alias_target('gst-doc', gst_doc_target)
endif
message('Gst docs subprojects: ' + documented_projects)
endif
all_plugins_paths = []
all_plugins_dirs = []
plugins_names = []
foreach plugin: all_plugins
plugin_path = plugin.get_variable('full_path')
all_plugins_paths += plugin_path
all_plugins_dirs += fs.parent(plugin_path)
plugins_names += fs.name(plugin_path)
endforeach
# Work around meson bug: https://github.com/mesonbuild/meson/pull/6770
pathsep = host_machine.system() == 'windows' ? ';' : ':'
all_plugins_paths = pathsep.join(all_plugins_paths)
devenv = environment()
if not building_full
devenv.prepend('GST_PLUGIN_PATH', all_plugins_dirs)
else
# Make sure the current build directory is first in PATH so we prefer tools
# built here that links on gst-full instead instead of those built in
# subprojects.
devenv.prepend('PATH', meson.current_build_dir())
endif
devenv.set('CURRENT_GST', meson.current_source_dir())
devenv.set('GST_VERSION', meson.project_version())
devenv.set('GST_ENV', 'gst-' + meson.project_version())
devenv.set('GST_REGISTRY', meson.current_build_dir() / 'registry.dat')
devenv.set('GST_PLUGIN_SYSTEM_PATH', '')
meson.add_devenv(devenv)
generate_plugins_paths = find_program('scripts/generate_plugins_path.py')
configure_file(
output : 'GstPluginsPath.json',
command : [generate_plugins_paths,
'@OUTPUT@',
all_plugins_paths]
)
if building_full
cdata = configuration_data()
cdata.set_quoted('GST_API_VERSION', apiversion)
cdata.set_quoted('GETTEXT_PACKAGE', 'gstreamer-full-1.0')
cdata.set_quoted('PACKAGE_VERSION', gst_version)
cdata.set_quoted('GST_PACKAGE_ORIGIN', get_option('package-origin'))
configure_file(output : 'config.h', configuration : cdata)
configinc = include_directories('.')
gst_c_args = ['-DHAVE_CONFIG_H']
# Generate a .c file which declare and register all built plugins
all_plugin_names = ';'.join(plugins_names)
static_plugins = get_option('gst-full-plugins')
if static_plugins == '*'
static_plugins = all_plugin_names
endif
generate_init_static_plugins = find_program('scripts/generate_init_static_plugins.py')
init_static_plugins_c = configure_file(
output: 'gstinitstaticplugins.c',
command : [generate_init_static_plugins,
'-o ' + '@OUTPUT@',
'-p ' + static_plugins,
'-e ' + get_option('gst-full-elements'),
'-t ' + get_option('gst-full-typefind-functions'),
'-d ' + get_option('gst-full-device-providers'),
'-T ' + get_option('gst-full-dynamic-types'),
'--giomodules', ';'.join(giomodules),
]
)
gstfull_link_args = cc.get_supported_link_arguments(['-Wl,-Bsymbolic-functions'])
# Get a list of libraries that needs to be exposed in the ABI.
exposed_libs = []
exposed_deps = []
exposed_girs = []
incdir_deps = []
wanted_libs = ['gstreamer-1.0'] + get_option('gst-full-libraries')
all_libs = '*' in wanted_libs
foreach pkgname_library : all_libraries
pkg_name = pkgname_library[0]
lib_def = pkgname_library[1]
if pkg_name in wanted_libs or all_libs
if lib_def.has_key('lib')
exposed_deps += dependency(pkg_name)
incdir_deps += dependency(pkg_name).partial_dependency(includes: true, sources: true)
exposed_libs += [lib_def['lib']]
endif
if lib_def.has_key('gir')
exposed_girs += lib_def['gir']
endif
endif
endforeach
# glib and gobject are part of our public API. If we are using glib from the
# system then our pkg-config file must require it. If we built it as
# subproject then we need to link_whole it.
glib_deps = []
glib_dep = dependency('glib-2.0')
gobject_dep = dependency('gobject-2.0')
if gobject_dep.type_name() == 'internal'
glib_subproject = subproject('glib')
exposed_libs += glib_subproject.get_variable('libglib')
exposed_libs += glib_subproject.get_variable('libgobject')
incdir_deps += [
glib_dep.partial_dependency(includes: true),
gobject_dep.partial_dependency(includes: true),
]
else
glib_deps = [glib_dep, gobject_dep]
endif
link_deps = []
if get_option('gst-full-version-script') != ''
symbol_map = meson.current_source_dir() / get_option('gst-full-version-script')
link_arg = '-Wl,--version-script=' + symbol_map
if cc.has_link_argument(link_arg)
gstfull_link_args += link_arg
link_deps += symbol_map
elif cc.get_id() == 'msvc'
warning('FIXME: Provide a def file to publish the public symbols')
else
warning('FIXME: Linker does not support the supplied version script (' + symbol_map + '), please disable the "gst-full-version-script" option')
endif
endif
giomodules_deps = []
foreach module : giomodules
giomodules_deps += dependency(module)
endforeach
# Build both shared and static library
gstfull = both_libraries('gstreamer-full-1.0',
init_static_plugins_c,
link_args: gstfull_link_args,
link_whole : exposed_libs,
dependencies : [incdir_deps, glib_deps, all_plugins, giomodules_deps],
link_depends : link_deps,
install : true,
)
gst_full_dep = declare_dependency(link_with: gstfull.get_shared_lib(),
dependencies : incdir_deps + glib_deps,
include_directories: include_directories('.')
)
gst_full_libs_private = cc.get_supported_link_arguments(['-Wl,--undefined=gst_init_static_plugins'])
if gst_full_libs_private == []
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()
built_girs = {}
foreach gir: exposed_girs
includes = []
foreach include: gir.get('includes', [])
includes += [built_girs.get(include, include)]
endforeach
gir += {
'includes': includes,
'extra_args': gir.get('extra_args', []) + ['--add-include-path=' + meson.current_build_dir()],
'install': true,
}
built_girs += {gir.get('namespace') + '-' + gir.get('nsversion'): gnome.generate_gir(gstfull, kwargs: gir)[0]}
endforeach
endif
pkgconfig.generate(gstfull,
requires: glib_deps,
libraries_private: gst_full_libs_private,
subdirs : 'gstreamer-1.0')
meson.override_dependency('gstreamer-full-1.0', gst_full_dep)
if not get_option('tools').disabled()
foreach tool, data: all_tools
exe_name = '@0@-@1@'.format(tool, apiversion)
extra_args = data.get('extra_c_args', [])
sources = data.get('files')
install_tag = data.get('install_tag', 'bin')
deps = []
foreach d : data.get('deps', [])
if d not in exposed_deps
deps += d
endif
endforeach
executable(exe_name,
sources,
install: true,
install_tag: install_tag,
include_directories : [configinc],
dependencies : [gst_full_dep] + deps,
c_args: extra_args + gst_c_args + ['-DG_LOG_DOMAIN="@0@"'.format(exe_name)],
)
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()),
'--srcdir=@0@'.format(meson.global_source_root())]
subdir('tests')
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
subdir('scripts')
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: ', ')