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rust: Introduce arch_to_rust_arch()

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On modern Power systems `uname -m` yields 'ppc64le' while the toolchain
knows the architecture as 'powerpc64le'. Provide a mapping from one to
the other to integrate with the existing architecture configuration
flags.

arch_to_rust_arch() only exists to map the OE *_ARCH variables before
any further processing, unlike arch_to_rust_target_arch() which is
specific to the internal triple handling of rust.

On Linux ppc64le systems the changes give the following config:

```
$ cat ./tmp/work/ppc64le-linux/rust-native/1.58.0-r0/targets/ppc64le-linux.json
{
    "llvm-target": "powerpc64le-unknown-linux-gnu",
    "data-layout": "e-m:e-i64:64-n32:64-v256:256:256-v512:512:512",
    "max-atomic-width": 64,
    "target-pointer-width": "64",
    "target-c-int-width": "64",
    "target-endian": "little",
    "arch": "powerpc64",
    "os": "linux",
    "env": "gnu",
    "vendor": "unknown",
    "target-family": "unix",
    "linker": "gcc",
    "cpu": "generic",
    "dynamic-linking": true,
    "executables": true,
    "linker-is-gnu": true,
    "linker-flavor": "gcc",
    "has-rpath": true,
    "has-elf-tls": true,
    "position-independent-executables": true,
    "panic-strategy": "unwind"
}
```

Change-Id: Ief0c01189185d7d4da31d307270bec4e1de674ca
(From OE-Core rev: 9ab61e3cfef0157393cb870d606c2f362e190889)

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Andrew Jeffery
2022-03-01 01:09:46 +10:30
committed by Richard Purdie
parent 39aec4ac7f
commit 102e4c029e
4 changed files with 12 additions and 5 deletions
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2
meta/classes/base.bbclass
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@@ -12,7 +12,7 @@ inherit logging
OE_EXTRA_IMPORTS ?= ""
OE_IMPORTS += "os sys time oe.path oe.utils oe.types oe.package oe.packagegroup oe.sstatesig oe.lsb oe.cachedpath oe.license oe.qa oe.reproducible ${OE_EXTRA_IMPORTS}"
OE_IMPORTS += "os sys time oe.path oe.utils oe.types oe.package oe.packagegroup oe.sstatesig oe.lsb oe.cachedpath oe.license oe.qa oe.reproducible oe.rust ${OE_EXTRA_IMPORTS}"
OE_IMPORTS[type] = "list"
PACKAGECONFIG_CONFARGS ??= ""

2
meta/classes/rust-common.bbclass
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@@ -65,7 +65,7 @@ def rust_base_triple(d, thing):
if thing == "TARGET" and target_is_armv7(d):
arch = "armv7"
else:
arch = d.getVar('{}_ARCH'.format(thing))
arch = oe.rust.arch_to_rust_arch(d.getVar('{}_ARCH'.format(thing)))
# All the Yocto targets are Linux and are 'unknown'
vendor = "-unknown"

5
meta/lib/oe/rust.py Normal file
View File

@@ -0,0 +1,5 @@
# Handle mismatches between `uname -m`-style output and Rust's arch names
def arch_to_rust_arch(arch):
if arch == "ppc64le":
return "powerpc64le"
return arch

8
meta/recipes-devtools/rust/rust-common.inc
View File

@@ -313,10 +313,12 @@ def rust_gen_target(d, thing, wd, features, cpu, arch, abi=""):
sys = sys_for(d, thing)
prefix = prefix_for(d, thing)
rust_arch = oe.rust.arch_to_rust_arch(arch)
if abi:
arch_abi = "{}-{}".format(arch, abi)
arch_abi = "{}-{}".format(rust_arch, abi)
else:
arch_abi = arch
arch_abi = rust_arch
features = features or d.getVarFlag('FEATURES', arch_abi) or ""
features = features.strip()
@@ -329,7 +331,7 @@ def rust_gen_target(d, thing, wd, features, cpu, arch, abi=""):
tspec['target-pointer-width'] = d.getVarFlag('TARGET_POINTER_WIDTH', arch_abi)
tspec['target-c-int-width'] = d.getVarFlag('TARGET_C_INT_WIDTH', arch_abi)
tspec['target-endian'] = d.getVarFlag('TARGET_ENDIAN', arch_abi)
tspec['arch'] = arch_to_rust_target_arch(arch)
tspec['arch'] = arch_to_rust_target_arch(rust_arch)
tspec['os'] = "linux"
if "musl" in tspec['llvm-target']:
tspec['env'] = "musl"