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Document more Makefile variables

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Rebecca Turner 2023-12-18 13:34:08 -08:00
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doc/manual/src/contributing/hacking.md
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@ -66,13 +66,24 @@ You can also build Nix for one of the [supported platforms](#platforms).
## Makefile variables ## Makefile variables
You may need `profiledir=$out/etc/profile.d` and `sysconfdir=$out/etc` to run
`make install`.
You may want to set `MAKEFLAGS="-e -j $NIX_BUILD_CORES"` to allow environment
variables to override `Makefile` variables.
- `ENABLE_BUILD=yes` to enable building the C++ code. - `ENABLE_BUILD=yes` to enable building the C++ code.
- `ENABLE_DOC_GEN=yes` to enable building the documentation (manual, man pages, etc.). - `ENABLE_DOC_GEN=yes` to enable building the documentation (manual, man pages, etc.).
The docs can take a while to build, so you may want to disable this for local development.
- `ENABLE_FUNCTIONAL_TESTS=yes` to enable building the functional tests. - `ENABLE_FUNCTIONAL_TESTS=yes` to enable building the functional tests.
- `ENABLE_UNIT_TESTS=yes` to enable building the unit tests. - `ENABLE_UNIT_TESTS=yes` to enable building the unit tests.
- `OPTIMIZE=1` to enable optimizations. - `OPTIMIZE=1` to enable optimizations.
- `libraries=libutil programs=` to only build a specific library (this will
The docs can take a while to build, so you may want to disable this for local development. fail in the linking phase if you don't have the other libraries built, but is
useful for checking types).
- `libraries= programs=nix` to only build a specific program (this will not, in
general, work, because the programs need the libraries).
## Building Nix ## Building Nix