Instead of treating them as OSes, we treat them as their own category.
This is modeled on what LLVM does with its `ObjectFormatType` enum [1],
advancing my long-running project of trying to nudge GNU config and LLVM
towards each other, taking the best ideas of both.
Currently, my emphasis is just on code cleanup. There are just a few
tests for newly supported changes that fall out of this. But down the
road, this also opens the door to parsing configs with more than 4
components, like [2].
[1]: https://llvm.org/doxygen/classllvm_1_1Triple.html#a83e907e55fa50e093caa96a0aff96201
[2]: a18266473b/llvm/unittests/TargetParser/TripleTest.cpp (L1873C50-L1873C77)
added in
28b82bc39e
* config.sub: Save machine code format name separately from the OS name.
* doc/config.sub.1: Regenerate.
* testsuite/config-sub.data (arm-unknown-none-aout,
arm-unknown-none-pe): New entries.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
GNU binutils support the selection of the default MIPS subtarget via the
configuration triplet, e.g. `mips64octeon+el-unknown-linux-gnu' builds a
Linux/GNU 64-bit MIPS (n32 ABI) little-endian configuration with the CPU
set to Octeon+ by default. However `config.sub' rejects such a triplet
and indeed it only lets through a random choice of ones people submitted
changes for to support.
There is a large number of MIPS CPU configurations, 118 at the moment,
that GNU binutils know, so rather than adding them individually and then
hoping it will be kept up to date from now on accept any `mips*' pattern
for the machine part, just as we already do for a few of other targets.
* config.sub: Allow any `mips*' CPU rather than listing a choice
individually.
* doc/config.sub.1: Regenerate.
* testsuite/config-sub.data: Add test cases.
These are distinct from "ios". They are also technically Darwin, so while
something like "aarch64-apple-darwin" could be used when targeting these,
on Apple-silicon based systems there could be cases where `--host` and
`--build` have the same value, and a ./configure script may determine that
we are not cross building, causing it to try to execute test programs for
the target OS that will not run on macOS.
These are functionally equivalent to iOS, and targets with "-tvos" and
"-watchos" are already used by clang.
* config.sub (tvos*, watchos*): Recognize.
* testsuite/config-sub.data (arm64-apple-tvos, arm64-apple-tvos10.0.0,
arm64-apple-watchos, arm64-apple-watchos5.0): New tests.
* doc/config.sub.1: Regenerate.
These are not real OSes, they are object file formats. There is a
longstanding tradition of using them for embedded/freestanding
programming, so it makes sense to parse them with `kernel=none`.
(I have a WIP future patch that systematizes parsing these non-OSes a
bit more. That also opens the door to parsing a 5th component as LLVM
can do.)
This change unblocks an issue we've been having with Nixpkgs (see
https://github.com/NixOS/nixpkgs/issues/165836 for the longer version).
* config.sub (none-coff*, none-elf*): Recognize.
* testsuite/config-sub.data (arm-unknown-none-coff,
arm-unknown-none-elf, riscv64-company-none-elf): New tests.
* doc/config.sub.1: Regenerate.
In older times, MinGW (GCC toolchain with modified windows headers) was
the only free software toolchain for Windows. But now, LLVM has support
both for MinGW ABI and Microsoft's own. The distinction matters for C++
more than C.
LLVM[1], Rust[2], and other projects have taken to differentiating these
two as `...windows-gnu` vs `...windows-msvc`. I think that makes a lot
of sense, as it correctly identifiers both their commonalities and their
differences.
A lot of MinGW-supporting software, most notably GCC itself, will
presumably continue to use configs like x86_64-pc-mingw32 and
i686-pc-mingw32. That's fine; this patch doesn't normalize them away
(like LLVM does) or remove them! If and when that software wants to
support the MSVC ABI without requiring MSVC itself, they can switch to
these newer configurations.
[1]: a18266473b/llvm/unittests/TargetParser/TripleTest.cpp (L1907-L1951)
[2]: 36fb58e433/compiler/rustc_target/src/spec/mod.rs (L1255-L1271)
Note: currently, there's no detection method for linux-mlibc in
config.guess, since there's no decided way to detect mlibc.
Signed-off-by: Arsen Arsenović <arsen@aarsen.me>
* config.sub (linux-mlibc*): Recognize.
* testsuite/config-sub.data (aarch64-linux-mlibc, riscv-linux-mlibc,
x86_64-linux-mlibc): New tests.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
ALT uses armh as an alias for armv7l-alt-linux-gnueabihf since 2012.
* config.sub (armh-unknown|armh-alt): Set cpu, vendor, and basic_os.
(timestamp): Update.
* doc/config.sub.1: Regenerate.
* testsuite/config-sub.data (armh, armh-alt-linux-gnueabihf): New tests.
Complement binutils commit ae52f4830604 ("Add MIPS r3 and r5 support.")
and recognize MIPS CPU patterns for the R3 and R5 ISA levels, used by
GAS to set defaults.
* config.sub (mipsisa32r3, mipsisa32r3el, mipsisa32r5, mipsisa32r5el,
mipsisa64r3, mipsisa64r3el, mipsisa64r5, mipsisa64r5el): Recognize.
* doc/config.sub.1: Regenerate.
* testsuite/config-sub.data: Add test cases.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Commit 5e531d391852 broke powerpc-eabivle:
$ ./config.sub powerpc-eabivle
Invalid configuration `powerpc-eabivle': OS `eabivle' not recognized
Also powerpc-eabisim and probably some arm configurations.
* config.sub: Accept OS of eabi* and gnueabi*.
* testsuite/config-sub.data: Add powerpc-eabisim and powerpc-eabivle.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Recently RISC-V community got patches big-endian support for binutils,
and we'd like to accept that, however before accepting that I think it
would be better to upstream config.sub and config.guess change here :)
It's my check result on Ubuntu 18.04:
$ make check
cd testsuite && bash config-guess.sh && rm uname
PASS: config.guess checks (131 tests)
cd testsuite && bash config-sub.sh
PASS: config.sub checks (830 tests)
PASS: config.sub idempotency checks (767 tests)
PASS: config.sub canonicalise each config.guess testcase (131 tests)
* config.guess (riscv32be:Linux:*:*, riscv64be:Linux:*:*): Recognize.
* config.sub (riscv32be, riscv64be): Likewise.
* doc/config.guess.1: Regenerate.
* doc/config.sub.1: Likewise.
* testsuite/config-guess.data: Add test cases for riscv32be, and riscv64be.
* testsuite/config-sub.data (riscv32be, riscv64be): Add test cases.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
* Makefile (sort): Add dependencies, sort in C locale using "sort -u".
* testsuite/config-guess.data: Make the data sorted.
* testsuite/config-sub.data: Likewise.
overrides.
Previously, 'ibm' was forced, which caused problems when someone
wanted to use 'busybox' as a vendor and cross-compile with a slightly
different toolchain. The fix changed behaviour such that without any
vendor, it would use to 'unknown' rather than 'ibm' as before.
This patch aims to compromise between the old and new behaviour by
making 'ibm' a default for those CPUs when no vendor is specified, but
if the user explicitly provides a vendor that is used instead. This
sort of "vendor defaulting" has plenty of precedent in config.sub, so
it seemed like a good approach.
Signed-off-by: Ben Elliston <bje@gnu.org>
