> > In a comparison with current autotools build system, meson/ninja > provides a huge improvement in build speed, while keeping the same > functionalities currently available and being considered more user > friendly. > > The new system coexists within the same repository with the current one, > so we can do more extensive testing of its functionality before deciding > if the old system can be removed, or for some reason, has to stay for > good. > > - Meson: https://mesonbuild.com > > This is the equivalent of autogen/configure step in autotools. It > generates the files that will be used by ninja to actually build the > source code. > > The project has received lots of traction recently, with many GNOME > projects willing to move to this new build system. The following wiki > page has more details of the status of the many projects being ported: > > https://wiki.gnome.org/Initiatives/GnomeGoals/MesonPorting > > Meson has a python-like syntax, easy to read, and the documentation > on the project is very complete, with a dedicated page on how to port > from autotools, explaining how most common use cases can be > implemented using meson. > > http://mesonbuild.com/Porting-from-autotools.html > > Other important sources of information: > > http://mesonbuild.com/howtox.html > http://mesonbuild.com/Syntax.html > http://mesonbuild.com/Reference-manual.html > > - Ninja: https://ninja-build.org > > Ninja is the equivalent of make in an autotools setup, which actually > builds the source code. It has being used by large and complex > projects such as Google Chrome, Android and LLVM. There is not much to > say about ninja (other than it is much faster than make) because we > won't interact directly with it as much, as meson does the middle man > job here. The reasoning for creating ninja in the first place is > explained on the following post: > > http://neugierig.org/software/chromium/notes/2011/02/ninja.html > > Also its manual provides more in-depth information about the design > principles: > > https://ninja-build.org/manual.html > > - Basic workflow: > > Meson package is available for most if not all distros, so, taking > Fedora as an example, we only need to run: > > # dnf -y install meson ninja-build. > > With Meson, building in-tree is not possible at all, so we need to > pass a directory as argument to meson where we want the build to be > done. This has the advantage of creating builds with different options > under the same parent directory, e.g.: > > $ meson ./build --prefix=/usr > $ meson ./build-extra -Dextra-checks=true -Dalignment-checks=true > > After configuration is done, we call ninja to actually do the build. > > $ ninja -C ./build > $ ninja -C ./build install > > Ninja defaults to parallel builds, and this can be changed with the -j > flag. > > $ ninja -j 10 -C ./build > > - Hacking: > > * meson.build: Mandatory for the project root and usually found under > each directory you want something to be built. > > * meson_options.txt: Options that can interfere with the result of the > build. > > Signed-off-by: Eduardo Lima (Etrunko) <etrunko@xxxxxxxxxx> > Signed-off-by: Christophe Fergeau <cfergeau@xxxxxxxxxx> > Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx> Does not build for me: $ ninja -C build -j1 ninja: Entering directory `build' [1/50] Linking target server/libspice-server.so.1.12.4. FAILED: server/libspice-server.so.1.12.4 ccache cc -o server/libspice-server.so.1.12.4 'server/server@@spice-server@sha/meson-generated_.._spice-server-enums.c.o' 'server/server@@spice-server@sha/agent-msg-filter.c.o' 'server/server@@spice-server@sha/char-device.c.o' 'server/server@@spice-server@sha/common-graphics-channel.c.o' 'server/server@@spice-server@sha/cursor-channel.c.o' 'server/server@@spice-server@sha/cursor-channel-client.c.o' 'server/server@@spice-server@sha/dcc.c.o' 'server/server@@spice-server@sha/dcc-send.c.o' 'server/server@@spice-server@sha/dispatcher.c.o' 'server/server@@spice-server@sha/display-channel.c.o' 'server/server@@spice-server@sha/event-loop.c.o' 'server/server@@spice-server@sha/glz-encoder.c.o' 'server/server@@spice-server@sha/glz-encoder-dict.c.o' 'server/server@@spice-server@sha/image-cache.c.o' 'server/server@@spice-server@sha/image-encoders.c.o' 'server/server@@spice-server@sha/inputs-channel.c.o' 'server/server@@spice-server@sha/inputs-channel-client.c.o' 'server/server@@spice-server@sha/jpeg-encoder.c.o' 'server/server@@spice-server@sha/main-channel.c.o' 'server/server@@spice-server@sha/main-channel-client.c.o' 'server/server@@spice-server@sha/main-dispatcher.c.o' 'server/server@@spice-server@sha/memslot.c.o' 'server/server@@spice-server@sha/mjpeg-encoder.c.o' 'server/server@@spice-server@sha/net-utils.c.o' 'server/server@@spice-server@sha/pixmap-cache.c.o' 'server/server@@spice-server@sha/red-channel.c.o' 'server/server@@spice-server@sha/red-channel-capabilities.c.o' 'server/server@@spice-server@sha/red-channel-client.c.o' 'server/server@@spice-server@sha/red-client.c.o' 'server/server@@spice-server@sha/red-parse-qxl.c.o' 'server/server@@spice-server@sha/red-pipe-item.c.o' 'server/server@@spice-server@sha/red-qxl.c.o' 'server/server@@spice-server@sha/red-record-qxl.c.o' 'server/server@@spice-server@sha/red-replay-qxl.c.o' 'server/server@@spice-server@sha/reds.c.o' 'server/server@@spice-server@sha/red-stream.c.o' 'server/server@@spice-server@sha/red-worker.c.o' 'server/server@@spice-server@sha/sound.c.o' 'server/serv er@@spice-server@sha/spice-bitmap-utils.c.o' 'server/server@@spice-server@sha/spicevmc.c.o' 'server/server@@spice-server@sha/stat-file.c.o' 'server/server@@spice-server@sha/stream-channel.c.o' 'server/server@@spice-server@sha/red-stream-device.c.o' 'server/server@@spice-server@sha/sw-canvas.c.o' 'server/server@@spice-server@sha/tree.c.o' 'server/server@@spice-server@sha/utils.c.o' 'server/server@@spice-server@sha/video-stream.c.o' 'server/server@@spice-server@sha/zlib-encoder.c.o' 'server/server@@spice-server@sha/lz4-encoder.c.o' 'server/server@@spice-server@sha/smartcard.c.o' 'server/server@@spice-server@sha/smartcard-channel-client.c.o' 'server/server@@spice-server@sha/gstreamer-encoder.c.o' -Wl,--no-undefined -Wl,--as-needed -shared -fPIC -Wl,--start-group -Wl,-soname,libspice-server.so.1 subprojects/spice-common/common/libspice-common-server.a subprojects/spice-common/common/libspice-common.a -Wl,--no-copy-dt-needed-entries -Wl,-z,relro -Wl,-z,now -Wl,--version-script=/home/freddy/work/spice-server/server/spice-server.syms -lm -Wl,--end-group /usr/lib64/libglib-2.0.so /usr/lib64/libgio-2.0.so /usr/lib64/libgobject-2.0.so /usr/lib64/libgthread-2.0.so -pthread /usr/lib64/libpixman-1.so /usr/lib64/libssl.so /usr/lib64/libcrypto.so /usr/lib64/libcelt051.so /usr/lib64/libm.so /usr/lib64/libopus.so /home/freddy/install/lib/libcacard.so /usr/lib64/libssl3.so /usr/lib64/libsmime3.so /usr/lib64/libnss3.so /usr/lib64/libnssutil3.so /usr/lib64/libplds4.so /usr/lib64/libplc4.so /usr/lib64/libnspr4.so /usr/lib64/libpthread.so /usr/lib64/libdl.so /usr/lib64/libjpeg.so /usr/lib64/libz.so /usr/lib64/librt.so /usr/lib64/libgstreamer-1.0.so /usr/lib64/libgstbase-1.0.so /usr/lib64/libgstapp-1.0.so /usr/lib64/libgstvideo-1.0.so /usr/lib64/liborc-0.4.so /usr/lib64/liblz4.so /usr/lib64/libsasl2.so -lm -pthread -lm -pthread server/server@@spice-server@sha/dcc.c.o: In function `display_channel_client_class_init': /home/freddy/work/spice-server/build/../server/dcc.c:139: undefined reference to `spice_image_compression_t_spice_image_compression_t_get_type' /home/freddy/work/spice-server/build/../server/dcc.c:149: undefined reference to `spice_wan_compression_t_spice_wan_compression_t_get_type' /home/freddy/work/spice-server/build/../server/dcc.c:159: undefined reference to `spice_wan_compression_t_spice_wan_compression_t_get_type' collect2: error: ld returned 1 exit status ninja: build stopped: subcommand failed. 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