Add parser and config support for toolchains. A toolchain is a configured
string alias applied at parse time. When parsing the '%' sigil the parser
will match the token after the sigil to any toolchain name, and if there is
a match it will replace the sigil and following token with the tokens for
the associated string.
For example, the following config allows for the user to enforce usage of
clang for c/cxx and gcc for fortran with a single option `%my_toolchain`
toolchains:
my_toolchain: ^[when=%c virtuals=c ]clang ^[when=%cxx virtuals=cxx ]clang ^[when=%fortran virtuals=fortran ]gcc
Note that the space before the ']' symbol is required for proper parsing. This
is considered a bug and will be fixed when possible.
Signed-off-by: Gregory Becker <becker33@llnl.gov>
This PR modifies the parser, so that `%` is parsed as a `DEPENDENCY`, and all
node properties that follow are associated to the name after the `%`. e.g.,
in `foo %gcc +binutils` the `+binutils` refers to `gcc` and not to `foo`.
`%` is still parsed as a build-type dependency, at the moment.
Environments, config files and `package.py` files from before Spack v1.0 may have
spec strings with package variants, targets, etc. *after* a build dependency, and these
will need to be updated. You can use the `spack style --spec-strings` command to do this.
To see what strings will be parsed differently under Spack v1.0, run:
```
spack style --spec-strings FILES
```
where `FILES` is a list of filenames that may contain old specs. To update these spec
strings so that they parse correctly under both Spack 1.0 and Spack 0.x, you can run:
```
spack style --fix --spec-strings FILES
```
In the example above, `foo %gcc +binutils` would be rewritten as `foo +binutils %gcc`,
which parses the same in any Spack version.
In addition, this PR fixes several issues with `%` dependencies:
- [x] Ensure we can still constrain compilers on reuse
- [x] Ensure we can reuse a compiler by hash
- [x] Add tests
---------
Signed-off-by: Massimiliano Culpo <massimiliano.culpo@gmail.com>
The "magic" globals `std_cmake_args`, `std_pip_args` and `std_meson_args` were deprecated in Spack 0.23 and removed in this commit, because they are no longer static and don't make sense to be defined for packages that do not depend on cmake, pip or meson.
Additionally, removing them ensures that `build_environment.py` no longer depends on builders, which will soon be moved out of `spack` into the `spack_repo` package.
The audit that scans whether these globals are used is not removed.
oneAPI env setup was prematurely removed in compilers-as-nodes update
(#45189 - removed from the compiler class but not added to the
associated compiler package): restore it.
