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readme: document ./build -s
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@@ -5195,9 +5195,13 @@ if you make any changes to that package after the initial build: <<rebuild>>
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If you are comparing two versions of have a package that takes considerable time to build, one on each branch, you may want to keep two builds around to make things even faster.
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One simple approach is to simply use two checkouts of this repository.
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One simple approach is to simply use two checkouts of this repository, or to use the `-s` option:
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While <<ccache>> does help with this, it still does not necessarily make compilation instantaneous due to configuration file reading.
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....
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./build -s mybranch
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....
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While <<ccache>> does help to speed up the full rebuild, it still does not necessarily make compilation instantaneous due to configuration file reading.
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One alternative is to do:
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@@ -28,6 +28,10 @@
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|`-p` | |Pass extra arguments to the `rootfs_post_build_script`.
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|`-S` | |Don't build QEMU with SDL support.
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Graphics such as X11 won't work, only the terminal.
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|`-s` | |Add a custom suffix to the build.
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E.g., doing `./build -s mysuf` puts all the build output
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into `out/x86_64-mysuf`. This allows keep multiple builds around
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when you checkout between branches.
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|`-v` | |Do a verbose build.
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|===
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