Add CI for mips64(el)-unknown-linux-musl

.travis.yml

@@ -185,8 +185,12 @@ matrix:
       stage: tier2
     - env: TARGET=mips64-unknown-linux-gnuabi64
       stage: tier2
+    - env: TARGET=mips64-unknown-linux-musl
+      stage: tier2
     - env: TARGET=mips64el-unknown-linux-gnuabi64
       stage: tier2
+    - env: TARGET=mips64el-unknown-linux-musl
+      stage: tier2
     - env: TARGET=mipsel-unknown-linux-musl
       stage: tier2
     - env: TARGET=powerpc-unknown-linux-gnu
@@ -237,6 +241,9 @@ matrix:
       - env: TARGET=wasm32-wasi
       - env: TARGET=powerpc-unknown-linux-gnu
       - env: TARGET=s390x-unknown-linux-gnu
+      # FIXME(#1449): remove this once the corresponding rust-lang/rust PR lands
+      - env: TARGET=mips64-unknown-linux-musl
+      - env: TARGET=mips64el-unknown-linux-musl
 
 install: travis_retry rustup target add $TARGET
 

ci/docker/mips64-unknown-linux-musl/Dockerfile

@@ -0,0 +1,15 @@
+FROM ubuntu:19.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  gcc make libc6-dev git curl ca-certificates \
+  gcc-mips64-linux-gnuabi64 qemu-user
+
+COPY install-musl.sh /
+RUN sh /install-musl.sh mips64
+
+# FIXME: shouldn't need the `-lgcc` here, shouldn't that be in libstd?
+ENV PATH=$PATH:/musl-mips64/bin:/rust/bin \
+    CC_mips64_unknown_linux_musl=musl-gcc \
+    RUSTFLAGS='-Clink-args=-lgcc' \
+    CARGO_TARGET_MIPS64_UNKNOWN_LINUX_MUSL_LINKER=musl-gcc \
+    CARGO_TARGET_MIPS64_UNKNOWN_LINUX_MUSL_RUNNER="qemu-mips64 -L /musl-mips64"

ci/docker/mips64el-unknown-linux-musl/Dockerfile

@@ -0,0 +1,15 @@
+FROM ubuntu:19.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  gcc make libc6-dev git curl ca-certificates \
+  gcc-mips64el-linux-gnuabi64 qemu-user
+
+COPY install-musl.sh /
+RUN sh /install-musl.sh mips64el
+
+# FIXME: shouldn't need the `-lgcc` here, shouldn't that be in libstd?
+ENV PATH=$PATH:/musl-mips64el/bin:/rust/bin \
+    CC_mips64el_unknown_linux_musl=musl-gcc \
+    RUSTFLAGS='-Clink-args=-lgcc' \
+    CARGO_TARGET_MIPS64EL_UNKNOWN_LINUX_MUSL_LINKER=musl-gcc \
+    CARGO_TARGET_MIPS64EL_UNKNOWN_LINUX_MUSL_RUNNER="qemu-mips64el -L /musl-mips64el"

ci/install-musl.sh

@@ -46,6 +46,20 @@ case ${1} in
         ./configure --prefix="/musl-${musl_arch}"
         make install -j4
         ;;
+    mips64)
+        musl_arch=mips64
+        kernel_arch=mips
+        CC=mips64-linux-gnuabi64-gcc CFLAGS="-march=mips64r2 -mabi=64" \
+          ./configure --prefix="/musl-${musl_arch}" --enable-wrapper=yes
+        make install -j4
+        ;;
+    mips64el)
+        musl_arch=mips64el
+        kernel_arch=mips
+        CC=mips64el-linux-gnuabi64-gcc CFLAGS="-march=mips64r2 -mabi=64" \
+          ./configure --prefix="/musl-${musl_arch}" --enable-wrapper=yes
+        make install -j4
+        ;;
     *)
         echo "Unknown target arch: \"${1}\""
         exit 1