- Pass --with-multilib-list=m4,m4-nofpu for SH4 so the kernel can use
-m4-nofpu. Move libraries out of !m4/ multilib subdirectory in
postInstall before moveToOutput.
- Generate sysroot-suffix.h for SH4 in the standalone libgcc builder.
- Add linux-kernel.target = "vmlinux" and installTarget for SH4.
All changes scoped to isSh4 to avoid rebuilds on other platforms.
Add sh4 CPU type (32-bit, little-endian, family "sh"), isSh4 predicate,
"sh4-linux" system double, cross-compilation example (sh4-unknown-linux-gnu),
linuxArch mapping to "sh", and test entry.
Add arc CPU type (32-bit, little-endian, family "arc"), isArc
predicate, arc-linux double, arc cross example with
arc-unknown-linux-gnu triple, and release-cross job.
ARC has glibc support and uses the "arc" Linux kernel arch, which
matches the CPU name so no explicit linuxArch mapping is needed.
Use lib.filter and lib.attrNames instead of builtins.* directly,
consistent with the rest of the file's style.
Follow-up to #506588, incorporating review feedback from #507232.
`qemuArch` returned "aarch64" for both LE and BE, causing binfmt to
register `qemu-aarch64` for `aarch64_be` binaries. QEMU ships separate
`qemu-aarch64` and `qemu-aarch64_be` binaries, so the wrong interpreter
was used, failing with "Invalid ELF image for this architecture".
Since QEMU distinguishes endianness in the binary name, this adds the
"_be" suffix via `isBigEndian`, which is similar to the approach MIPS
uses a few lines below.
- concrete types start with uppercase: Int, String, Bool, Derivation,
etc.
- type variables start with lowercase: a, b, etc.
- list:
- use `[x]` for homogeneous lists instead of `List x` or `[ x ]`
- use `List` for heterogeneous lists (not that common in `lib`)
- attr:
- use `AttrSet` for a generic attribute set type
- use `{ key1 :: Type1; key2 :: Type2; ... }` for adding signatures
for known attribute names and types
- use `{ key1 = value1; key2 = value2; ... }` for adding attributes
with known literals
- end with an ellipsis (`...`) if the set can contain unknown
attributes
- use `{ [String] :: x }` if all the attributes has the same type `x`
- prefer `Any` over `a` if the latter is not reused
Make rustcTargetSpec the primary entrypoint for setting a custom target,
and wire up all the other stuff so they are hopefully as working and as
broken as before.
In particular, to specify a custom target, the user now just specifies
rust.rustcTargetSpec. rust.platform and rust.cargoShortTarget are
populated from rust.rustcTargetSpec now. In addition, rust.rustcTarget
defaults to rust.cargoShortTarget. (rust.rustcTarget and
rust.cargoShortTarget really should always be the same, but I think we
can deal with that later).
This allows the user to more easily control the basename of
rust.rustcTargetSpec by passing e.g.
"${./rust}/mips64el_mips3-unknown-linux-gnuabi64.json", which allows
cc-rs and in turn std to work.
Rust does not know how to parse "gnuabielfv{1,2}", so simplify those down to just "gnu".
This obsoletes the manual rustcTarget fix in the ppc64-elfv1 example.
The old cygwin support used -pc-windows-cygnus as the config. This is
supported by LLVM, but not by GNU. This will change it to -pc-cygwin,
which is more generally supported.
Because the kernel is now 'cygwin' rather than 'windows', isWindows will
return false. There are lots of different reasons isWindows is used in
nixpkgs, but in my experience they often have to do with posix
compatibility and don't apply to cygwin.
Co-authored-by: Brian McKenna <brian@brianmckenna.org>
