Promote powerpc64le-unknown-linux-musl to tier 2 with host tools

MCP: rust-lang/compiler-team#803

Signed-off-by: Jens Reidel <adrian@travitia.xyz>

Author: Gelbpunkt

compiler/rustc_target/src/spec/targets/powerpc64le_unknown_linux_musl.rs

@@ -11,9 +11,9 @@ pub(crate) fn target() -> Target {
         llvm_target: "powerpc64le-unknown-linux-musl".into(),
         metadata: crate::spec::TargetMetadata {
             description: Some("64-bit PowerPC Linux with musl 1.2.3, Little Endian".into()),
-            tier: Some(3),
-            host_tools: Some(false),
-            std: None, // ?
+            tier: Some(2),
+            host_tools: Some(true),
+            std: Some(true),
         },
         pointer_width: 64,
         data_layout: "e-m:e-Fn32-i64:64-n32:64-S128-v256:256:256-v512:512:512".into(),

src/bootstrap/configure.py

@@ -130,6 +130,8 @@ def v(*args):
   "mips64-unknown-linux-muslabi64 install directory")
 v("musl-root-mips64el", "target.mips64el-unknown-linux-muslabi64.musl-root",
   "mips64el-unknown-linux-muslabi64 install directory")
+v("musl-root-powerpc64le", "target.powerpc64le-unknown-linux-musl.musl-root",
+  "powerpc64le-unknown-linux-musl install directory")
 v("musl-root-riscv32gc", "target.riscv32gc-unknown-linux-musl.musl-root",
   "riscv32gc-unknown-linux-musl install directory")
 v("musl-root-riscv64gc", "target.riscv64gc-unknown-linux-musl.musl-root",

src/bootstrap/src/core/build_steps/llvm.rs

@@ -217,6 +217,7 @@ pub(crate) fn is_ci_llvm_available(config: &Config, asserts: bool) -> bool {
         ("powerpc-unknown-linux-gnu", false),
         ("powerpc64-unknown-linux-gnu", false),
         ("powerpc64le-unknown-linux-gnu", false),
+        ("powerpc64le-unknown-linux-musl", false),
         ("riscv64gc-unknown-linux-gnu", false),
         ("s390x-unknown-linux-gnu", false),
         ("x86_64-unknown-freebsd", false),

src/ci/docker/host-x86_64/dist-powerpc64le-linux/Dockerfile

@@ -3,23 +3,46 @@ FROM ubuntu:22.04
 COPY scripts/cross-apt-packages.sh /scripts/
 RUN sh /scripts/cross-apt-packages.sh
 
+COPY scripts/crosstool-ng-git.sh /scripts/
+RUN sh /scripts/crosstool-ng-git.sh
+
 COPY scripts/rustbuild-setup.sh /scripts/
 RUN sh /scripts/rustbuild-setup.sh
+
 WORKDIR /tmp
 
+COPY scripts/crosstool-ng-build.sh /scripts/
+COPY host-x86_64/dist-powerpc64le-linux/powerpc64le-unknown-linux-musl.defconfig /tmp/crosstool.defconfig
+RUN /scripts/crosstool-ng-build.sh
+
+WORKDIR /build
+
 RUN apt-get install -y --no-install-recommends rpm2cpio cpio
-COPY host-x86_64/dist-powerpc64le-linux/shared.sh host-x86_64/dist-powerpc64le-linux/build-powerpc64le-toolchain.sh /tmp/
+COPY host-x86_64/dist-powerpc64le-linux/shared.sh host-x86_64/dist-powerpc64le-linux/build-powerpc64le-toolchain.sh /build/
 RUN ./build-powerpc64le-toolchain.sh
 
 COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
+ENV PATH=$PATH:/x-tools/powerpc64le-unknown-linux-musl/bin
+
 ENV \
     AR_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-ar \
     CC_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-gcc \
-    CXX_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-g++
+    CXX_powerpc64le_unknown_linux_gnu=powerpc64le-linux-gnu-g++ \
+    AR_powerpc64le_unknown_linux_musl=powerpc64le-unknown-linux-musl-ar \
+    CC_powerpc64le_unknown_linux_musl=powerpc64le-unknown-linux-musl-gcc \
+    CXX_powerpc64le_unknown_linux_musl=powerpc64le-unknown-linux-musl-g++
+
+ENV HOSTS=powerpc64le-unknown-linux-gnu,powerpc64le-unknown-linux-musl
 
-ENV HOSTS=powerpc64le-unknown-linux-gnu
+ENV RUST_CONFIGURE_ARGS \
+    --enable-extended \
+    --enable-full-tools \
+    --enable-profiler \
+    --enable-sanitizers \
+    --disable-docs \
+    --set target.powerpc64le-unknown-linux-musl.crt-static=false \
+    --musl-root-powerpc64le=/x-tools/powerpc64le-unknown-linux-musl/powerpc64le-unknown-linux-musl/sysroot/usr
 
-ENV RUST_CONFIGURE_ARGS --enable-extended --enable-profiler --disable-docs
 ENV SCRIPT python3 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/host-x86_64/dist-powerpc64le-linux/powerpc64le-unknown-linux-musl.defconfig

@@ -0,0 +1,16 @@
+CT_CONFIG_VERSION="4"
+CT_EXPERIMENTAL=y
+CT_PREFIX_DIR="/x-tools/${CT_TARGET}"
+CT_USE_MIRROR=y
+CT_MIRROR_BASE_URL="https://ci-mirrors.rust-lang.org/rustc"
+CT_ARCH_POWERPC=y
+CT_ARCH_LE=y
+CT_ARCH_64=y
+# CT_DEMULTILIB is not set
+CT_ARCH_ARCH="powerpc64le"
+CT_KERNEL_LINUX=y
+CT_LINUX_V_4_19=y
+CT_LIBC_MUSL=y
+CT_MUSL_V_1_2_3=y
+CT_CC_LANG_CXX=y
+CT_GETTEXT_NEEDED=y

src/doc/rustc/src/SUMMARY.md

@@ -66,6 +66,7 @@
     - [powerpc-unknown-openbsd](platform-support/powerpc-unknown-openbsd.md)
     - [powerpc-unknown-linux-muslspe](platform-support/powerpc-unknown-linux-muslspe.md)
     - [powerpc64-ibm-aix](platform-support/aix.md)
+    - [powerpc64le-unknown-linux-musl](platform-support/powerpc64-unknown-linux-musl.md)
     - [riscv32e*-unknown-none-elf](platform-support/riscv32e-unknown-none-elf.md)
     - [riscv32i*-unknown-none-elf](platform-support/riscv32-unknown-none-elf.md)
     - [riscv32im-risc0-zkvm-elf](platform-support/riscv32im-risc0-zkvm-elf.md)

src/doc/rustc/src/platform-support.md

@@ -97,6 +97,7 @@ target | notes
 `powerpc-unknown-linux-gnu` | PowerPC Linux (kernel 3.2, glibc 2.17)
 `powerpc64-unknown-linux-gnu` | PPC64 Linux (kernel 3.2, glibc 2.17)
 `powerpc64le-unknown-linux-gnu` | PPC64LE Linux (kernel 3.10, glibc 2.17)
+[`powerpc64le-unknown-linux-musl`](platform-support/powerpc64le-unknown-linux-musl.md) | PPC64LE Linux (kernel 4.19, musl 1.2.3)
 [`riscv64gc-unknown-linux-gnu`](platform-support/riscv64gc-unknown-linux-gnu.md) | RISC-V Linux (kernel 4.20, glibc 2.29)
 [`riscv64gc-unknown-linux-musl`](platform-support/riscv64gc-unknown-linux-musl.md) | RISC-V Linux (kernel 4.20, musl 1.2.3)
 [`s390x-unknown-linux-gnu`](platform-support/s390x-unknown-linux-gnu.md) | S390x Linux (kernel 3.2, glibc 2.17)
@@ -348,7 +349,6 @@ target | std | host | notes
 `powerpc-unknown-freebsd` |   |   | PowerPC FreeBSD
 `powerpc64-unknown-linux-musl` | ? |  | 64-bit PowerPC Linux with musl 1.2.3
 [`powerpc64-wrs-vxworks`](platform-support/vxworks.md) | ✓ |  |
-`powerpc64le-unknown-linux-musl` | ? |  | 64-bit PowerPC Linux with musl 1.2.3, Little Endian
 [`powerpc64-unknown-openbsd`](platform-support/openbsd.md) | ✓ | ✓ | OpenBSD/powerpc64
 [`powerpc64-ibm-aix`](platform-support/aix.md) | ? |  | 64-bit AIX (7.2 and newer)
 `riscv32gc-unknown-linux-gnu` |   |   | RISC-V Linux (kernel 5.4, glibc 2.33)

src/doc/rustc/src/platform-support/powerpc64le-unknown-linux-musl.md

@@ -0,0 +1,48 @@
+# riscv64gc-unknown-linux-musl
+
+**Tier: 2**
+
+Target for 64-bit little endian PowerPC Linux programs using musl libc.
+
+## Target maintainers
+
+- [@Gelbpunkt](https://github.com/Gelbpunkt)
+- [@famfo](https://github.com/famfo)
+- [@neuschaefer](https://github.com/neuschaefer)
+
+## Requirements
+
+Building the target itself requires a 64-bit little endian PowerPC compiler that is supported by `cc-rs`.
+
+## Building the target
+
+The target can be built by enabling it for a `rustc` build.
+
+```toml
+[build]
+target = ["powerpc64le-unknown-linux-musl"]
+```
+
+Make sure your C compiler is included in `$PATH`, then add it to the `config.toml`:
+
+```toml
+[target.powerpc64le-unknown-linux-musl]
+cc = "powerpc64le-linux-musl-gcc"
+cxx = "powerpc64le-linux-musl-g++"
+ar = "powerpc64le-linux-musl-ar"
+linker = "powerpc64le-linux-musl-gcc"
+```
+
+## Building Rust programs
+
+This target are distributed through `rustup`, and otherwise require no
+special configuration.
+
+## Cross-compilation
+
+This target can be cross-compiled from any host.
+
+## Testing
+
+This target can be tested as normal with `x.py` on a 64-bit little endian
+PowerPC host or via QEMU emulation.

src/tools/build-manifest/src/main.rs

@@ -37,6 +37,7 @@ static HOSTS: &[&str] = &[
     "powerpc-unknown-linux-gnu",
     "powerpc64-unknown-linux-gnu",
     "powerpc64le-unknown-linux-gnu",
+    "powerpc64le-unknown-linux-musl",
     "riscv64gc-unknown-linux-gnu",
     "s390x-unknown-linux-gnu",
     "x86_64-apple-darwin",
@@ -131,6 +132,7 @@ static TARGETS: &[&str] = &[
     "powerpc-unknown-linux-gnu",
     "powerpc64-unknown-linux-gnu",
     "powerpc64le-unknown-linux-gnu",
+    "powerpc64le-unknown-linux-musl",
     "riscv32i-unknown-none-elf",
     "riscv32im-risc0-zkvm-elf",
     "riscv32im-unknown-none-elf",