It turns out none of this stuff is needed. The docs aren't evenly built
properly anyways so the build trivially succeeds either way, due to what
looks like upstream misunderstanding automake. If I try to build the
docs manually in a cross shell (before and after this change), there's a
make rule error such that some HTML files aren't even attempted to be
built and then a copy fails.
Even if this was all fixed, these been a good number of cross fixes
upstream getting them to use CC_FOR_BUILD and other good stuff, so I
doubt such hacks would be needed.
Progress towards #40531 and #33302.
And there's more reverts too. The previous commmit
d838afbc9376bdadb8c690eb00b425f3eeccdf2d to gnu-config finally solves
it!
This reverts commit 3ed545ab31.
This build is compatible with PINE A64-LTS.
[dezgeg changed the original device tree patch to v4 of the patch series
"sunxi: sync H3, H5, A64 DTs from mainline Linux" submitted to the
upstream mailing list by Andre Przywara. Also install the
u-boot-sunxi-with-spl.bin binary similar to 32-bit boards
since it's now being built by the upstream build system.]
(cherry picked from commit 2ff31f71ae)
(cherry picked from commit 176d151f4d)
These derivations have not seen any updates since they were created in 2010,
and some of their sources have disappeared. There are upstream configs for
these boards, so these are now used, and they build correctly. I have no way
of testing them, and I don't if anyone even uses either board with Nix anymore.
(cherry picked from commit 01020b3263)
(cherry picked from commit 48ade50d8e)
ARM ABIs now have a float field. This is used as a fallback to lessen
our use of `platform.gcc.float`. I didn't know what the MIPs convention
is so I kept using `platform.gcc.float` in that case.
Following legacy packing conventions, `isArm` was defined just for
32-bit ARM instruction set. This is confusing to non packagers though,
because Aarch64 is an ARM instruction set.
The official ARM overview for ARMv8[1] is surprisingly not confusing,
given the overall state of affairs for ARM naming conventions, and
offers us a solution. It divides the nomenclature into three levels:
```
ISA: ARMv8 {-A, -R, -M}
/ \
Mode: Aarch32 Aarch64
| / \
Encoding: A64 A32 T32
```
At the top is the overall v8 instruction set archicture. Second are the
two modes, defined by bitwidth but differing in other semantics too, and
buttom are the encodings, (hopefully?) isomorphic if they encode the
same mode.
The 32 bit encodings are mostly backwards compatible with previous
non-Thumb and Thumb encodings, and if so we can pun the mode names to
instead mean "sets of compatable or isomorphic encodings", and then
voilà we have nice names for 32-bit and 64-bit arm instruction sets
which do not use the word ARM so as to not confused either laymen or
experienced ARM packages.
[1]: https://developer.arm.com/products/architecture/a-profile
(cherry picked from commit ba52ae5048)
Also fix numberous bugs, such as:
- Not getting confused on more flags taking file arguments.
- Ensuring children reexport their children, but the original
binary/library doesn't.
- Not spawning children when it turns out we just dynamically link
under the threshold but our total number of inputs exceeeds it.
- Children were always named `libunnamed-*`, when that name was
supposed to be the last resort only.
ld-wrapper's own RPATH check hardcodes `.so`, but darwin uses `.dylib`
*and* (in practice due to lousy build systems) `.so`. We don't care
however because we never inject `--rpath` like that in practice on
Darwin. Hopefully someday we won't on linux either.
Source master rebase of my [PR #34].
Eventually, we might consider doing something for GNU binutils too, in
order that we switch (the normal) ld-wrapper to always use this to
leverage ld to resolve libraries, rather than faking it in bash.
[PR #34]: https://github.com/tpoechtrager/cctools-port/pull/34
Instead of intersecting system strings, we filter with the sort of
patterns used in `meta.platforms`.
Indicating this change `forTheseSystems` has been renamed to
`forMatchingSystems`, since the given list is now patterns to match, and
not the systems themselves. [Just as with `meta.platforms`, systems
strings are also supported for backwards compatibility.]
This is more flexible, and makes the `forMatchingSystems` and
packagePlatforms` cases more analogous.
First, we need check against the host platform, not the build platform.
That's simple enough.
Second, we move away from exahustive finite case analysis (i.e.
exhaustively listing all platforms the package builds on). That only
work in a closed-world setting, where we know all platforms we might
build one. But with cross compilation, we may be building for arbitrary
platforms, So we need fancier filters. This is the closed world to open
world change.
The solution is instead of having a list of systems (strings in the form
"foo-bar"), we have a list of of systems or "patterns", i.e. attributes
that partially match the output of the parsers in `lib.systems.parse`.
The "check meta" logic treats the systems strings as an exact whitelist
just as before, but treats the patterns as a fuzzy whitelist,
intersecting the actual `hostPlatform` with the pattern and then
checking for equality. (This is done using `matchAttrs`).
The default convenience lists for `meta.platforms` are now changed to be
lists of patterns (usually a single pattern) in
`lib/systems/for-meta.nix` for maximum flexibility under this new
system.
Fixes#30902
Negative reasoning like `allBut` is a bad idea with an open world of
platforms. Concretely, if we add a new, quite different sort of
platform, existing packages with `allBut` will claim they work on it
even though they probably won't.
