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add INSTALL sections for faster builds and NODEP

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garak 2018-08-11 21:13:37 -04:00
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INSTALL.md
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@ -65,3 +65,31 @@ cd ../pokeemerald
``` ```
And build the ROM with `make -j4`. And build the ROM with `make -j4`.
# Faster builds
After the first build, subsequent builds are faster. You can further speed up the build:
## Parallel build
This significantly speeds up the build on modern machines.
By default `make` only runs a single thread. You can tell `make` to run on multiple threads with `make -j`. See the manfile for usage (`man make`).
The optimal value for `-j` is the number of logical cores on your machine. You can run `nproc` to see the exact number.
$ nproc
8
If you have 8 cores, run:
make -j8
`-j` on its own will spawn a new thread for each job. A clean build will have thousands of jobs, which will be slower than not using -j at all.
## Disable the dependency scanning
If you've only changed `.c` or `.s` files, you can turn off the dependency scanning temporarily. Changes to any other files will be ignored, and the build will either fail or not reflect those changes.
make NODEP=1