Add support for Meson as alternative/parallel build system

https://github.com/mesonbuild/meson

With contributions from:

Tim-Philipp Müller <tim@centricular.com>
Matej Knopp <matej.knopp@gmail.com>
Jussi Pakkanen <jpakkane@gmail.com> (original port)

Highlights of the features provided are:
* Faster builds on Linux (~40-50% faster)
* The ability to build with MSVC on Windows
* Generate Visual Studio project files
* Generate XCode project files
* Much faster builds on Windows (on-par with Linux)
* Seriously fast configure and building on embedded

... and many more. For more details see:

http://blog.nirbheek.in/2016/05/gstreamer-and-meson-new-hope.html
http://blog.nirbheek.in/2016/07/building-and-developing-gstreamer-using.html

Building with Meson should work on both Linux and Windows, but may
need a few more tweaks on other operating systems.

1 files changed, 350 insertions, 0 deletions

diff --git a/meson.build b/meson.build
new file mode 100644
index 000000000..a79b9129b
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,350 @@
+project('gst-plugins-bad', 'c', 'cpp',
+  version : '1.9.1.1',
+  meson_version : '>= 0.33.0',
+  default_options : [ 'warning_level=1',
+                      'c_std=gnu99',
+                      'buildtype=debugoptimized' ])
+
+gst_version = meson.project_version()
+version_arr = gst_version.split('.')
+gst_version_major = version_arr[0]
+gst_version_minor = version_arr[1]
+gst_version_micro = version_arr[2]
+if version_arr.length() == 4
+  gst_version_nano = version_arr[3]
+else
+  gst_version_nano = 0
+endif
+
+glib_req = '>= 2.40.0'
+gst_req = '>= @0@.@1@.0'.format(gst_version_major, gst_version_minor)
+
+api_version = '1.0'
+soversion = 0
+# maintaining compatibility with the previous libtool versioning
+# current = minor * 100 + micro
+libversion = '@0@.@1@.0'.format(soversion, gst_version_minor.to_int() * 100 + gst_version_micro.to_int())
+
+plugins_install_dir = '@0@/gstreamer-1.0'.format(get_option('libdir'))
+
+cc = meson.get_compiler('c')
+
+if cc.get_id() == 'msvc'
+  # 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
+  add_global_arguments('/wd4018', '/wd4244', '/wd4996', language : 'c')
+  # Disable SAFESEH with MSVC for plugins and libs that use external deps that
+  # are built with MinGW
+  noseh_link_args = ['/SAFESEH:NO']
+else
+  noseh_link_args = []
+endif
+
+cdata = configuration_data()
+check_headers = [
+  ['HAVE_DLFCN_H', 'dlfcn.h'],
+  ['HAVE_FCNTL_H', 'fcntl.h'],
+  ['HAVE_HIGHGUI_H', 'highgui.h'],
+  ['HAVE_INTTYPES_H', 'inttypes.h'],
+  ['HAVE_MEMORY_H', 'memory.h'],
+  ['HAVE_MSACM_H', 'msacm.h'],
+  ['HAVE_NETINET_IN_H', 'netinet/in.h'],
+  ['HAVE_NETINET_IP_H', 'netinet/ip.h'],
+  ['HAVE_NETINET_TCP_H', 'netinet/tcp.h'],
+  ['HAVE_OPENCV2_HIGHGUI_HIGHGUI_C_H', 'opencv2/highgui/highgui_c.h'],
+  ['HAVE_PTHREAD_H', 'pthread.h'],
+  ['HAVE_STDINT_H', 'stdint.h'],
+  ['HAVE_STDLIB_H', 'stdlib.h'],
+  ['HAVE_STRINGS_H', 'strings.h'],
+  ['HAVE_STRING_H', 'string.h'],
+  ['HAVE_SYS_PARAM_H', 'sys/param.h'],
+  ['HAVE_SYS_SOCKET_H', 'sys/socket.h'],
+  ['HAVE_SYS_STAT_H', 'sys/stat.h'],
+  ['HAVE_SYS_TIME_H', 'sys/time.h'],
+  ['HAVE_SYS_TYPES_H', 'sys/types.h'],
+  ['HAVE_SYS_UTSNAME_H', 'sys/utsname.h'],
+  ['HAVE_UNISTD_H', 'unistd.h'],
+  ['HAVE_WINDOWS_H', 'windows.h'],
+  ['HAVE_WININET_H', 'wininet.h'],
+  ['HAVE_WINSOCK2_H', 'winsock2.h'],
+  ['HAVE_WS2TCPIP_H', 'ws2tcpip.h'],
+]
+
+foreach h : check_headers
+  if cc.has_header(h.get(1))
+    cdata.set(h.get(0), 1)
+  endif
+endforeach
+
+check_functions = [
+# check token HAVE_ACM
+# check token HAVE_ANDROID_MEDIA
+# check token HAVE_APEXSINK
+# check token HAVE_APPLE_MEDIA
+# check token HAVE_ASSRENDER
+# check token HAVE_AVC
+# check token HAVE_AVFOUNDATION
+# check token HAVE_BLUEZ
+# check token HAVE_BZ2
+# check token HAVE_CFLOCALECOPYCURRENT
+# check token HAVE_CFPREFERENCESCOPYAPPVALUE
+# check token HAVE_CHROMAPRINT
+# check token HAVE_CPU_ALPHA
+# check token HAVE_CPU_ARM
+# check token HAVE_CPU_CRIS
+# check token HAVE_CPU_CRISV32
+# check token HAVE_CPU_HPPA
+# check token HAVE_CPU_I386
+# check token HAVE_CPU_IA64
+# check token HAVE_CPU_M68K
+# check token HAVE_CPU_MIPS
+# check token HAVE_CPU_PPC
+# check token HAVE_CPU_PPC64
+# check token HAVE_CPU_S390
+# check token HAVE_CPU_SPARC
+# check token HAVE_CPU_X86_64
+# check token HAVE_CURL
+# check token HAVE_DAALA
+# check token HAVE_DASH
+# check token HAVE_DC1394
+  ['HAVE_DCGETTEXT', 'dcgettext'],
+# check token HAVE_DECKLINK
+# check token HAVE_DIRECT3D
+# check token HAVE_DIRECTDRAW
+# check token HAVE_DIRECTFB
+# check token HAVE_DIRECTSOUND
+# check token HAVE_DOWHILE_MACROS
+# check token HAVE_DTS
+# check token HAVE_DVB
+# check token HAVE_EXPERIMENTAL
+# check token HAVE_EXTERNAL
+# check token HAVE_FAAC
+# check token HAVE_FAAD
+# check token HAVE_FBDEV
+# check token HAVE_FIONREAD_IN_SYS_FILIO
+# check token HAVE_FIONREAD_IN_SYS_IOCTL
+# check token HAVE_FLITE
+# check token HAVE_FLUIDSYNTH
+  ['HAVE_GETPAGESIZE', 'getpagesize'],
+# check token HAVE_GETTEXT
+# check token HAVE_GL
+# check token HAVE_GLCHAR
+# check token HAVE_GLEGLIMAGEOES
+# check token HAVE_GLINTPTR
+# check token HAVE_GLSIZEIPTR
+# check token HAVE_GME
+  ['HAVE_GMTIME_R', 'gmtime_r'],
+# check token HAVE_GRAPHENE
+# check token HAVE_GSETTINGS
+# check token HAVE_GSM
+# check token HAVE_GUDEV
+# check token HAVE_HLS
+# check token HAVE_ICONV
+# check token HAVE_IOS
+# check token HAVE_JPEG
+# check token HAVE_KATE
+# check token HAVE_LADSPA
+# check token HAVE_LIBGCRYPT
+# check token HAVE_LIBGME_ACCURACY
+# check token HAVE_LIBMMS
+# check token HAVE_LIBNSL
+# check token HAVE_LIBSOCKET
+# check token HAVE_LIBUSB
+# check token HAVE_LIBVISUAL
+# check token HAVE_LINSYS
+# check token HAVE_LRDF
+# check token HAVE_LV2
+# check token HAVE_MIMIC
+  ['HAVE_MMAP', 'mmap'],
+# check token HAVE_MODPLUG
+# check token HAVE_MPEG2ENC
+# check token HAVE_MPG123
+# check token HAVE_MPLEX
+# check token HAVE_MUSEPACK
+# check token HAVE_MYTHTV
+# check token HAVE_NAS
+# check token HAVE_NEON
+# check token HAVE_NETTLE
+# check token HAVE_OFA
+# check token HAVE_OPENAL
+# check token HAVE_OPENCV
+# check token HAVE_OPENEXR
+# check token HAVE_OPENJPEG
+# check token HAVE_OPENJPEG_1
+# check token HAVE_OPENNI2
+# check token HAVE_OPENSLES
+# check token HAVE_OPUS
+# check token HAVE_ORC
+# check token HAVE_OSX
+# check token HAVE_OSX_VIDEO
+# check token HAVE_PNG
+# check token HAVE_PVR
+# check token HAVE_QUICKTIME
+# check token HAVE_RDTSC
+# check token HAVE_RESINDVD
+# check token HAVE_RSVG
+# check token HAVE_RSVG_2_36_2
+# check token HAVE_RTMP
+# check token HAVE_SBC
+# check token HAVE_SCHRO
+# check token HAVE_SDL
+# check token HAVE_SHM
+# check token HAVE_SMOOTHSTREAMING
+# check token HAVE_SNDFILE
+# check token HAVE_SNDIO
+# check token HAVE_SOUNDTOUCH
+# check token HAVE_SOUNDTOUCH_1_4
+# check token HAVE_SPANDSP
+# check token HAVE_SPC
+# check token HAVE_SRTP
+# check token HAVE_SSH2
+# check token HAVE_TELETEXTDEC
+# check token HAVE_TIGER
+# check token HAVE_TIMIDITY
+# check token HAVE_UVCH264
+# check token HAVE_VALGRIND
+# check token HAVE_VCD
+# check token HAVE_VDPAU
+# check token HAVE_VIDEOTOOLBOX
+# check token HAVE_VIDEOTOOLBOX_10_9_6
+# check token HAVE_VOAACENC
+# check token HAVE_VOAMRWBENC
+# check token HAVE_WASAPI
+# check token HAVE_WAYLAND
+# check token HAVE_WEBP
+# check token HAVE_WILDMIDI
+# check token HAVE_WILDMIDI_0_2_2
+# check token HAVE_WIN32
+# check token HAVE_WININET
+# check token HAVE_WINKS
+# check token HAVE_WINSCREENCAP
+# check token HAVE_XVID
+# check token HAVE_ZBAR
+]
+
+foreach f : check_functions
+  if cc.has_function(f.get(1))
+    cdata.set(f.get(0), 1)
+  endif
+endforeach
+
+cdata.set('SIZEOF_CHAR', cc.sizeof('char'))
+cdata.set('SIZEOF_INT', cc.sizeof('int'))
+cdata.set('SIZEOF_LONG', cc.sizeof('long'))
+cdata.set('SIZEOF_SHORT', cc.sizeof('short'))
+cdata.set('SIZEOF_VOIDP', cc.sizeof('void*'))
+
+cdata.set('VERSION', '"@0@"'.format(gst_version))
+cdata.set('PACKAGE', '"gst-plugins-bad"')
+cdata.set('PACKAGE_VERSION', '"@0@"'.format(gst_version))
+cdata.set('PACKAGE_BUGREPORT', '"http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer"')
+cdata.set('PACKAGE_NAME', '"GStreamer Bad Plug-ins"')
+cdata.set('GETTEXT_PACKAGE', '"gst-plugins-bad-1.0"')
+cdata.set('GST_API_VERSION', '"@0@"'.format(api_version))
+cdata.set('GST_PACKAGE_NAME', '"GStreamer Bad Plug-ins"')
+cdata.set('GST_PACKAGE_ORIGIN', '"Unknown package origin"')
+cdata.set('GST_LICENSE', '"LGPL"')
+cdata.set('LIBDIR', '"@0@"'.format(get_option('libdir')))
+
+# FIXME: This should be exposed as a configuration option
+host_system = host_machine.system()
+if host_system == 'linux'
+  cdata.set('DEFAULT_VIDEOSRC', '"v4l2src"')
+elif host_system == 'osx'
+  cdata.set('DEFAULT_VIDEOSRC', '"avfvideosrc"')
+else
+  cdata.set('DEFAULT_VIDEOSRC', '"videotestsrc"')
+endif
+
+# Mandatory GST deps
+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'])
+gstnet_dep = dependency('gstreamer-net-1.0', version : gst_req,
+  fallback : ['gstreamer', 'gst_net_dep'])
+gstcheck_dep = dependency('gstreamer-check-1.0', version : gst_req,
+  fallback : ['gstreamer', 'gst_check_dep'])
+gstcontroller_dep = dependency('gstreamer-controller-1.0', version : gst_req,
+  fallback : ['gstreamer', 'gst_controller_dep'])
+
+gstpbutils_dep = dependency('gstreamer-pbutils-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'pbutils_dep'])
+gstallocators_dep = dependency('gstreamer-allocators-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'allocators_dep'])
+gstapp_dep = dependency('gstreamer-app-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'app_dep'])
+gstaudio_dep = dependency('gstreamer-audio-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'audio_dep'])
+gstfft_dep = dependency('gstreamer-fft-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'fft_dep'])
+gstriff_dep = dependency('gstreamer-riff-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'riff_dep'])
+gstrtp_dep = dependency('gstreamer-rtp-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'rtp_dep'])
+gstrtsp_dep = dependency('gstreamer-rtsp-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'rtsp_dep'])
+gstsdp_dep = dependency('gstreamer-sdp-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'sdp_dep'])
+gsttag_dep = dependency('gstreamer-tag-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'tag_dep'])
+gstvideo_dep = dependency('gstreamer-video-1.0', version : gst_req,
+    fallback : ['gst-plugins-base', 'video_dep'])
+
+libm = cc.find_library('m', required : false)
+glib_dep = dependency('glib-2.0', version : glib_req)
+gio_dep = dependency('gio-2.0', version : glib_req)
+gmodule_dep = dependency('gmodule-2.0', version : glib_req)
+x11_dep = dependency('x11', required : false)
+# Used by dtls and hls
+openssl_dep = dependency('openssl', version : '>= 1.0.1', required : false)
+
+if x11_dep.found()
+  cdata.set('HAVE_X11', 1)
+endif
+
+if host_machine.system() == 'windows'
+  winsock2 = [cc.find_library('ws2_32')]
+else
+  winsock2 = []
+endif
+
+have_orcc = false
+orcc_args = []
+if get_option('use_orc') != 'no'
+  need_orc = get_option('use_orc') == 'yes'
+  # Used by various libraries/elements that use Orc code
+  orc_dep = dependency('orc-0.4', required : need_orc)
+  orcc = find_program('orcc', required : need_orc)
+  if orc_dep.found() and orcc.found()
+    have_orcc = true
+    orcc_args = [orcc, '--include', 'glib.h']
+    cdata.set('HAVE_ORC', 1)
+  else
+    message('Orc Compiler not found, will use backup C code')
+    cdata.set('DISABLE_ORC', 1)
+  endif
+else
+  cdata.set('DISABLE_ORC', 1)
+endif
+
+configure_file(input : 'config.h.meson',
+  output : 'config.h',
+  configuration : cdata)
+
+gst_plugins_bad_args = ['-DHAVE_CONFIG_H']
+configinc = include_directories('.')
+libsinc = include_directories('gst-libs')
+
+vs_module_defs_dir = meson.source_root() + '/win32/common/'
+
+# Used by the *_mkenum.py helper scripts
+glib_mkenums = find_program('glib-mkenums')
+
+subdir('gst-libs')
+subdir('gst')
+subdir('sys')
+subdir('ext')
+subdir('pkgconfig')