Optimize builds times for llvm
Build in more threads and do not build some backends for ARM
- In x86, the builds go from 3 hours to 1.5 hour
- This is a special improvement for ARM, where the builds go from more than 10hours to 2hours
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One thing that can improve build time a lot is to build shared instead of static. I use that right now to build images faster. We have planned to use llvm 6 as shared. We could. Using LLVM 5 shared is in theory problematic, but in practice it is not and many distribution have it shared. LLVM 6 will be safe.
@valentindavid yep, I tried doing that but then I read is not really supported yet. Lets do it when we upgrade to llvm6; in the meantime, are you ok with the changes in this MR? There is an ARM build running at https://gitlab.com/freedesktop-sdk/freedesktop-sdk/-/jobs/47313699 as well in case you want to check
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master - 36cd904f - sdk/elements/desktop/llvm5.bst: Do not build AMDGPU backend in ARM
- a7181b5b - sdk/elements/desktop/llvm5.bst: Do not build the NVPTX (nvidia) backend in ARM
- 78378d7a - sdk/elements/desktop/llvm5.bst: Do not restrict the amount of build threads
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- e84d18d2 - Force buildstream to enable colors when running on gitlab
- a2b060cd - Add dconf
- a5499f46 - Update to gtk+ 3.22.26
- 7e05ef47 - Add "have-intel-gpu" check to VAAPI extension
- 9f344303 - Add "active-gtk-theme" download check to Gtk3 theme extension point
- e4d0a4ac - sdk: bump meson to 0.44
- b050b6be - sdk/elements/desktop/llvm5.bst: Do not build AMDGPU backend in ARM
- bcb90b24 - sdk/elements/desktop/llvm5.bst: Do not build the NVPTX (nvidia) backend in ARM
- 9dbc8b7b - sdk/elements/desktop/llvm5.bst: Do not restrict the amount of build threads
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master - 481c5bd3 - sdk/elements/desktop/llvm5.bst: Do not build AMDGPU backend in ARM
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- 2e242a13 - sdk/elements/desktop/llvm5.bst: Do not restrict the amount of build threads
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mentioned in merge request !54 (merged)
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master - 552deccb - Update bst version
- bbb72c58 - sdk/elements/desktop/llvm5.bst: Do not build AMDGPU backend in ARM
- 9f8546c2 - sdk/elements/desktop/llvm5.bst: Do not build the NVPTX (nvidia) backend in ARM
- c5ac5352 - sdk/elements/desktop/llvm5.bst: Do not restrict the amount of build threads
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- b6e9e1bf - sdk/elements/desktop/llvm5.bst: Restrict number of build threads to 6, instead 2
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- 72bb3b1d - Move installation of usercustomize.py into its own package in order to avoid…
- 91560a11 - sdk/elements/desktop/llvm5.bst: Do not build AMDGPU backend in ARM
- 9815af93 - sdk/elements/desktop/llvm5.bst: Do not build the NVPTX (nvidia) backend in ARM
- c8de60fd - sdk/elements/desktop/llvm5.bst: Restrict number of build threads to 6, instead 2
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- 9169478c - sdk/elements/desktop/llvm5.bst: Restrict number of build threads to 5, instead 2
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master - f521e167 - sdk/elements/desktop/libdrm.bst: Update to 2.4.89
- e8dda6d9 - sdk/elements/desktop/llvm5.bst: Do not build AMDGPU backend in ARM
- 17684ffe - sdk/elements/desktop/llvm5.bst: Do not build the NVPTX (nvidia) backend in ARM
- d1aa13d1 - sdk/elements/desktop/llvm5.bst: Restrict number of build threads to 4, instead 2
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