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Merge pull request #9792 from fricklerhandwerk/move-section 

move section on make variables
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Robert Hensing 2024-01-19 00:55:33 +01:00 committed by GitHub
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doc/manual/src/contributing/hacking.md
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@ -67,27 +67,6 @@ $ nix build
You can also build Nix for one of the [supported platforms](#platforms).
## 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_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_UNIT_TESTS=yes` to enable building the unit tests.
- `OPTIMIZE=1` to enable optimizations.
- `libraries=libutil programs=` to only build a specific library (this will
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
To build all dependencies and start a shell in which all environment variables are set up so that those dependencies can be found:
@ -132,6 +111,26 @@ $ nix-build
You can also build Nix for one of the [supported platforms](#platforms).
## Makefile variables
You may need `profiledir=$out/etc/profile.d` and `sysconfdir=$out/etc` to run `make install`.
Run `make` with [`-e` / `--environment-overrides`](https://www.gnu.org/software/make/manual/make.html#index-_002de) to allow environment variables to override `Makefile` variables:
- `ENABLE_BUILD=yes` to enable building the C++ code.
- `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_UNIT_TESTS=yes` to enable building the unit tests.
- `OPTIMIZE=1` to enable optimizations.
- `libraries=libutil programs=` to only build a specific library.
This will fail in the linking phase if the other libraries haven't been built, but is useful for checking types.
- `libraries= programs=nix` to only build a specific program.
This will not work in general, because the programs need the libraries.
## Platforms
Nix can be built for various platforms, as specified in [`flake.nix`]: