Why bother, and why would we want this? │~ First it's written in python, which means the potential developer base is massive. And it provides a recursive view for humans, but a non-recursive view for the system. This is the best of both worlds, humans can organize the build system in a way that makes sense, and the machine gets a non-recursive build system. It also uses ninja rather than make, and ninja is faster than make inherently. Meson is also a simpler syntax than autotools or cmake it's not Turing Complete by design nor does it expose python, again, by design. This allows meson itself to be reimplemented in a another language if python becomes a dead-end or a bottle-neck. It also makes it much easier to understand what the build system is doing. What's different about using meson? Well, apart from a faster builds and less magic in the build system? The configure flags are different, it uses -D<opt>=<value> more like cmake than the --enable or --with flags of autotools, although oddly it uses --prefix and friends when calling meson, but not with mesonconf, there's a bug opened on this. Meson also doesn't support in-tree builds at all; all builds are done out of tree. It also doesn't provide a "make dist" target, fortunately there's this awesome tool called git, and it provides a "git archive" command that does much the same thing. Did I mention it's fast? Here are the performance numbers I see on a 2 core 4 thread SKL, without initial configuration, and building out of tree (using zsh): For meson the command line is: time (meson build -Dmanpages=true && ninja -C build) For autotools the command line is: time (mdkir build && cd build && ../autotools && make -j5 -l4)<Paste> meson (cold ccache): 13.37s user 1.74s system 255% cpu 5.907 total autotools (cold ccache): 26.50s user 1.71s system 129% cpu 21.835 total meson (hot ccache): 2.13s user 0.39s system 154% cpu 1.633 total autotools (hot ccache): 13.93s user 0.73s system 102% cpu 14.259 total That's ~4x faster for a cold build and ~10x faster for a hot build. For a make clean && make style build with a hot cache: meson: 4.64s user 0.33s system 334% cpu 1.486 total autotools: 7.93s user 0.32s system 167% cpu 4.920 total Why bother with libdrm? It's a simple build system, that could be completely (or mostly completely) be ported in a very short time, and could serve as a tech demo for the advantages of using meson to garner feedback for embarking on a larger project, like mesa (which is what I'm planning to work on next). tl;dr I wrote this as practice for porting Mesa, and figured I might as well send it out since I wrote it. It is very likely that neither of these large patches will show up on the mailing list, but this is available at my github: https://github.com/dcbaker/libdrm wip/meson Dylan Baker (2): Port build system to meson remove autotools build .editorconfig | 2 +- .gitignore | 82 +----- Makefile.am | 144 +-------- Makefile.sources | 41 +-- README | 21 +- amdgpu/Makefile.am | 47 +--- amdgpu/Makefile.sources | 15 +- amdgpu/libdrm_amdgpu.pc.in | 11 +- amdgpu/meson.build | 57 +++- autogen.sh | 20 +- configure.ac | 568 +-------------------------------- etnaviv/Makefile.am | 26 +- etnaviv/Makefile.sources | 12 +- etnaviv/libdrm_etnaviv.pc.in | 11 +- etnaviv/meson.build | 56 +++- exynos/Makefile.am | 27 +-- exynos/libdrm_exynos.pc.in | 11 +- exynos/meson.build | 52 +++- freedreno/Makefile.am | 30 +-- freedreno/Makefile.sources | 26 +- freedreno/libdrm_freedreno.pc.in | 11 +- freedreno/meson.build | 72 ++++- include/drm/meson.build | 48 +++- intel/Makefile.am | 73 +---- intel/Makefile.sources | 15 +- intel/intel_bufmgr_gem.c | 8 +- intel/libdrm_intel.pc.in | 11 +- intel/meson.build | 55 +++- libdrm.pc.in | 10 +- libkms/Makefile.am | 43 +-- libkms/Makefile.sources | 23 +- libkms/libkms.pc.in | 11 +- libkms/meson.build | 71 ++++- m4/.gitignore | 5 +- man/Makefile.am | 62 +--- man/meson.build | 119 +++++++- meson.build | 288 ++++++++++++++++- meson_config.h.in | 24 +- meson_options.txt | 16 +- nouveau/Makefile.am | 33 +-- nouveau/Makefile.sources | 9 +- nouveau/libdrm_nouveau.pc.in | 11 +- nouveau/meson.build | 63 ++++- omap/Makefile.am | 24 +- omap/libdrm_omap.pc.in | 11 +- omap/meson.build | 48 +++- radeon/Makefile.am | 47 +--- radeon/Makefile.sources | 21 +- radeon/libdrm_radeon.pc.in | 11 +- radeon/meson.build | 62 +++- tegra/Makefile.am | 25 +- tegra/libdrm_tegra.pc.in | 11 +- tegra/meson.build | 50 +++- tests/Makefile.am | 47 +--- tests/amdgpu/Makefile.am | 29 +-- tests/amdgpu/meson.build | 30 ++- tests/etnaviv/Makefile.am | 41 +-- tests/etnaviv/meson.build | 49 +++- tests/exynos/Makefile.am | 47 +--- tests/exynos/meson.build | 43 ++- tests/kms/Makefile.am | 36 +-- tests/kms/meson.build | 46 +++- tests/kmstest/Makefile.am | 25 +- tests/kmstest/meson.build | 28 ++- tests/meson.build | 87 +++++- tests/modeprint/Makefile.am | 18 +- tests/modeprint/meson.build | 27 ++- tests/modetest/Makefile.am | 24 +- tests/modetest/Makefile.sources | 6 +- tests/modetest/meson.build | 27 ++- tests/nouveau/Makefile.am | 16 +- tests/nouveau/meson.build | 30 ++- tests/proptest/Makefile.am | 21 +- tests/proptest/Makefile.sources | 2 +- tests/proptest/meson.build | 27 ++- tests/radeon/Makefile.am | 14 +- tests/radeon/meson.build | 27 ++- tests/tegra/Makefile.am | 13 +- tests/tegra/meson.build | 27 ++- tests/ttmtest/Makefile.am | 1 +- tests/ttmtest/src/Makefile.am | 8 +- tests/util/Makefile.am | 13 +- tests/util/Makefile.sources | 8 +- tests/util/meson.build | 35 ++- tests/vbltest/Makefile.am | 19 +- tests/vbltest/meson.build | 27 ++- vc4/Makefile.am | 34 +-- vc4/Makefile.sources | 3 +- vc4/libdrm_vc4.pc.in | 9 +- vc4/meson.build | 28 ++- xf86atomic.h | 4 +- 91 files changed, 1634 insertions(+), 1992 deletions(-) delete mode 100644 Makefile.am delete mode 100644 Makefile.sources delete mode 100644 amdgpu/Makefile.am delete mode 100644 amdgpu/Makefile.sources delete mode 100644 amdgpu/libdrm_amdgpu.pc.in create mode 100644 amdgpu/meson.build delete mode 100755 autogen.sh delete mode 100644 configure.ac delete mode 100644 etnaviv/Makefile.am delete mode 100644 etnaviv/Makefile.sources delete mode 100644 etnaviv/libdrm_etnaviv.pc.in create mode 100644 etnaviv/meson.build delete mode 100644 exynos/Makefile.am delete mode 100644 exynos/libdrm_exynos.pc.in create mode 100644 exynos/meson.build delete mode 100644 freedreno/Makefile.am delete mode 100644 freedreno/Makefile.sources delete mode 100644 freedreno/libdrm_freedreno.pc.in create mode 100644 freedreno/meson.build create mode 100644 include/drm/meson.build delete mode 100644 intel/Makefile.am delete mode 100644 intel/Makefile.sources delete mode 100644 intel/libdrm_intel.pc.in create mode 100644 intel/meson.build delete mode 100644 libdrm.pc.in delete mode 100644 libkms/Makefile.am delete mode 100644 libkms/Makefile.sources delete mode 100644 libkms/libkms.pc.in create mode 100644 libkms/meson.build delete mode 100644 m4/.gitignore delete mode 100644 man/Makefile.am create mode 100644 man/meson.build create mode 100644 meson.build create mode 100644 meson_config.h.in create mode 100644 meson_options.txt delete mode 100644 nouveau/Makefile.am delete mode 100644 nouveau/Makefile.sources delete mode 100644 nouveau/libdrm_nouveau.pc.in create mode 100644 nouveau/meson.build delete mode 100644 omap/Makefile.am delete mode 100644 omap/libdrm_omap.pc.in create mode 100644 omap/meson.build delete mode 100644 radeon/Makefile.am delete mode 100644 radeon/Makefile.sources delete mode 100644 radeon/libdrm_radeon.pc.in create mode 100644 radeon/meson.build delete mode 100644 tegra/Makefile.am delete mode 100644 tegra/libdrm_tegra.pc.in create mode 100644 tegra/meson.build delete mode 100644 tests/Makefile.am delete mode 100644 tests/amdgpu/Makefile.am create mode 100644 tests/amdgpu/meson.build delete mode 100644 tests/etnaviv/Makefile.am create mode 100644 tests/etnaviv/meson.build delete mode 100644 tests/exynos/Makefile.am create mode 100644 tests/exynos/meson.build delete mode 100644 tests/kms/Makefile.am create mode 100644 tests/kms/meson.build delete mode 100644 tests/kmstest/Makefile.am create mode 100644 tests/kmstest/meson.build create mode 100644 tests/meson.build delete mode 100644 tests/modeprint/Makefile.am create mode 100644 tests/modeprint/meson.build delete mode 100644 tests/modetest/Makefile.am delete mode 100644 tests/modetest/Makefile.sources create mode 100644 tests/modetest/meson.build delete mode 100644 tests/nouveau/Makefile.am create mode 100644 tests/nouveau/meson.build delete mode 100644 tests/proptest/Makefile.am delete mode 100644 tests/proptest/Makefile.sources create mode 100644 tests/proptest/meson.build delete mode 100644 tests/radeon/Makefile.am create mode 100644 tests/radeon/meson.build delete mode 100644 tests/tegra/Makefile.am create mode 100644 tests/tegra/meson.build delete mode 100644 tests/ttmtest/Makefile.am delete mode 100644 tests/ttmtest/src/Makefile.am delete mode 100644 tests/util/Makefile.am delete mode 100644 tests/util/Makefile.sources create mode 100644 tests/util/meson.build delete mode 100644 tests/vbltest/Makefile.am create mode 100644 tests/vbltest/meson.build delete mode 100644 vc4/Makefile.am delete mode 100644 vc4/Makefile.sources delete mode 100644 vc4/libdrm_vc4.pc.in create mode 100644 vc4/meson.build base-commit: 19c4cfc54918d361f2535aec16650e9f0be667cd -- git-series 0.9.1
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