Add armv7-unknown-linux-musleabihf host tools to CI

src/ci/docker/host-x86_64/dist-armv7-linux-musl/Dockerfile

@@ -0,0 +1,37 @@
+FROM ubuntu:22.04
+
+COPY scripts/cross-apt-packages.sh /scripts/
+RUN sh /scripts/cross-apt-packages.sh
+
+COPY scripts/crosstool-ng.sh /scripts/
+RUN sh /scripts/crosstool-ng.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-armv7-linux-musl/armv7-unknown-linux-musleabihf.defconfig /tmp/crosstool.defconfig
+RUN /scripts/crosstool-ng-build.sh
+
+COPY scripts/sccache.sh /scripts/
+RUN sh /scripts/sccache.sh
+
+ENV PATH=$PATH:/x-tools/armv7-unknown-linux-musleabihf/bin
+
+ENV CC_armv7_unknown_linux_musleabihf=armv7-unknown-linux-musleabihf-gcc \
+    AR_armv7_unknown_linux_musleabihf=armv7-unknown-linux-musleabihf-ar \
+    CXX_armv7_unknown_linux_musleabihf=armv7-unknown-linux-musleabihf-g++
+
+ENV HOSTS=armv7-unknown-linux-musleabihf
+
+ENV RUST_CONFIGURE_ARGS \
+      --enable-extended \
+      --enable-full-tools \
+      --enable-profiler \
+      --enable-sanitizers \
+      --disable-docs \
+      --set target.armv7-unknown-linux-musleabihf.crt-static=false \
+      --musl-root-armv7hf=/x-tools/armv7-unknown-linux-musleabihf/armv7-unknown-linux-musleabihf/sysroot/usr
+
+ENV SCRIPT python3 ../x.py dist --host $HOSTS --target $HOSTS

src/ci/docker/host-x86_64/dist-armv7-linux-musl/armv7-unknown-linux-musleabihf.defconfig

@@ -0,0 +1,17 @@
+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_ARM=y
+CT_ARCH_ARM_MODE_THUMB=y
+CT_ARCH_SUFFIX="v7"
+CT_ARCH_ARCH="armv7-a"
+CT_ARCH_FPU="vfpv3-d16"
+CT_ARCH_FLOAT_HW=y
+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/ci/docker/host-x86_64/dist-various-1/Dockerfile

@@ -73,11 +73,7 @@ RUN env \
     env \
     CC=arm-linux-gnueabihf-gcc CFLAGS="-march=armv6 -marm -mfpu=vfp" \
     CXX=arm-linux-gnueabihf-g++ CXXFLAGS="-march=armv6 -marm -mfpu=vfp" \
-    bash musl.sh armhf && \
-    env \
-    CC=arm-linux-gnueabihf-gcc CFLAGS="-march=armv7-a+fp" \
-    CXX=arm-linux-gnueabihf-g++ CXXFLAGS="-march=armv7-a+fp" \
-    bash musl.sh armv7hf
+    bash musl.sh armhf
 
 ENV RUN_MAKE_TARGETS=thumbv6m-none-eabi
 ENV RUN_MAKE_TARGETS=$RUN_MAKE_TARGETS,thumbv7m-none-eabi
@@ -89,7 +85,7 @@ ENV TARGETS=$TARGETS,arm-unknown-linux-musleabi
 ENV TARGETS=$TARGETS,arm-unknown-linux-musleabihf
 ENV TARGETS=$TARGETS,armv5te-unknown-linux-gnueabi
 ENV TARGETS=$TARGETS,armv5te-unknown-linux-musleabi
-ENV TARGETS=$TARGETS,armv7-unknown-linux-musleabihf
+
 ENV TARGETS=$TARGETS,aarch64-unknown-none
 ENV TARGETS=$TARGETS,aarch64-unknown-none-softfloat
 ENV TARGETS=$TARGETS,sparc64-unknown-linux-gnu
@@ -121,7 +117,7 @@ ENV TARGETS=$TARGETS,x86_64-pc-windows-gnullvm
 ENV CFLAGS_armv5te_unknown_linux_musleabi="-march=armv5te -marm -mfloat-abi=soft" \
     CFLAGS_arm_unknown_linux_musleabi="-march=armv6 -marm" \
     CFLAGS_arm_unknown_linux_musleabihf="-march=armv6 -marm -mfpu=vfp" \
-    CFLAGS_armv7_unknown_linux_musleabihf="-march=armv7-a+fp" \
+
     CC_sparc64_unknown_linux_gnu=sparc64-linux-gnu-gcc \
     CC_x86_64_unknown_redox=x86_64-unknown-redox-gcc \
     CC_thumbv7neon_unknown_linux_gnueabihf=arm-linux-gnueabihf-gcc \
@@ -157,7 +153,7 @@ ENV RUST_CONFIGURE_ARGS \
       --musl-root-armv5te=/musl-armv5te \
       --musl-root-arm=/musl-arm \
       --musl-root-armhf=/musl-armhf \
-      --musl-root-armv7hf=/musl-armv7hf \
+
       --disable-docs
 
 ENV SCRIPT \

src/ci/github-actions/jobs.yml

@@ -198,6 +198,9 @@ auto:
   - name: dist-armv7-linux
     <<: *job-linux-4c
 
+  - name: dist-armv7-linux-musl
+    <<: *job-linux-4c
+
   - name: dist-i586-gnu-i586-i686-musl
     <<: *job-linux-4c