Fix riscv64gc-unknown-linux-gnu target (#1525)

Fix #1423

.changes/1525.json

@@ -0,0 +1,5 @@
+{
+    "description": "Fix riscv64gc-unknown-linux-gnu target",
+    "issues": [1423],
+    "type": "fixed"
+}

README.md

@@ -236,7 +236,7 @@ terminate.
 | `powerpc-unknown-linux-gnu`            | 2.31   | 9.4.0  | ✓   | 6.1.0 |   ✓    |
 | `powerpc64-unknown-linux-gnu`          | 2.31   | 9.4.0  | ✓   | 6.1.0 |   ✓    |
 | `powerpc64le-unknown-linux-gnu`        | 2.31   | 9.4.0  | ✓   | 6.1.0 |   ✓    |
-| `riscv64gc-unknown-linux-gnu`          | 2.31   | 9.4.0  | ✓   | 6.1.0 |   ✓    |
+| `riscv64gc-unknown-linux-gnu`          | 2.35   | 11.4.0 | ✓   | 8.2.2 |   ✓    |
 | `s390x-unknown-linux-gnu`              | 2.31   | 9.4.0  | ✓   | 6.1.0 |   ✓    |
 | `sparc64-unknown-linux-gnu`            | 2.31   | 9.4.0  | ✓   | 6.1.0 |   ✓    |
 | `sparcv9-sun-solaris`                  | 1.22.7 | 8.4.0  | ✓   | N/A   |        |

ci/test.sh

@@ -48,10 +48,6 @@ main() {
         # don't use xargo: should have native support just from rustc
         rustup toolchain add nightly
         CROSS+=("+nightly")
-    elif [[ "${TARGET}" == "riscv64gc-unknown-linux-gnu" ]]; then
-        # FIXME: riscv64gc-unknown-linux-gnu is broken on rustc 1.75, see https://github.com/cross-rs/cross/issues/1423
-        rustup toolchain add 1.70
-        CROSS+=("+1.70")
     fi
 
     if (( ${STD:-0} )); then

docker/Dockerfile.riscv64gc-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:20.04 as cross-base
+FROM ubuntu:22.04 as cross-base
 ENV DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/lib.sh

@@ -54,6 +54,18 @@ if_ubuntu() {
     fi
 }
 
+if_ubuntu_ge() {
+    if grep -q -i ubuntu /etc/os-release; then
+        local ver
+        ver="$(source /etc/os-release; echo $VERSION_ID)"
+        if dpkg --compare-versions "$ver" "ge" "$1"; then
+            shift
+            eval "${@}"
+        fi
+    fi
+}
+
+
 GNU_MIRRORS=(
     "https://ftp.gnu.org/gnu/"
     "https://ftpmirror.gnu.org/"

docker/linux-image.sh

@@ -137,9 +137,7 @@ main() {
         ;;
     riscv64)
         kernel='6.*-riscv64'
-        debsource="deb http://ftp.ports.debian.org/debian-ports unstable main"
-        debsource="${debsource}\ndeb http://ftp.ports.debian.org/debian-ports unreleased main"
-        debsource="${debsource}\ndeb http://deb.debian.org/debian unstable main"
+        debsource="deb http://deb.debian.org/debian unstable main"
         deps=(libcrypt1:"${arch}")
         ;;
     s390x)
@@ -365,6 +363,7 @@ mkdir /dev/pts
 mount -t devpts none /dev/pts/
 
 # some archs does not have virtio modules
+# fscache is builtin on riscv64
 insmod /modules/failover.ko || insmod /modules/failover.ko.xz || true
 insmod /modules/net_failover.ko || insmod /modules/net_failover.ko.xz || true
 insmod /modules/virtio.ko || insmod /modules/virtio.ko.xz || true
@@ -375,7 +374,7 @@ insmod /modules/virtio_pci_modern_dev.ko || insmod /modules/virtio_pci_modern_de
 insmod /modules/virtio_pci.ko || insmod /modules/virtio_pci.ko.xz || true
 insmod /modules/virtio_net.ko || insmod /modules/virtio_net.ko.xz || true
 insmod /modules/netfs.ko || insmod /modules/netfs.ko.xz || true
-insmod /modules/fscache.ko || insmod /modules/fscache.ko.xz
+insmod /modules/fscache.ko || insmod /modules/fscache.ko.xz || true
 insmod /modules/9pnet.ko || insmod /modules/9pnet.ko.xz
 insmod /modules/9pnet_virtio.ko || insmod /modules/9pnet_virtio.ko.xz || true
 insmod /modules/9p.ko || insmod /modules/9p.ko.xz
@@ -390,6 +389,12 @@ mount -t 9p -o trans=virtio target /target -oversion=9p2000.u || true
 exec dropbear -F -E -B
 EOF
 
+    if [[ "${arch}" == "riscv64" ]]; then
+        # Symlink dynamic loader to /lib/ld-linux-riscv64-lp64d.so.1
+        mkdir -p "${root}/lib"
+        ln -s /usr/lib/riscv64-linux-gnu/ld-linux-riscv64-lp64d.so.1 "${root}/lib/ld-linux-riscv64-lp64d.so.1"
+    fi
+
     chmod +x "${root}/init"
     cd "${root}"
     find . | cpio --create --format='newc' --quiet | gzip >../initrd.gz

docker/qemu.sh

@@ -29,6 +29,10 @@ build_static_libffi () {
 build_static_libmount () {
     local version_spec=2.23.2
     local version=2.23
+
+    if_ubuntu_ge 22.04 version_spec=2.37.2
+    if_ubuntu_ge 22.04 version=2.37
+
     local td
     td="$(mktemp -d)"
 
@@ -191,6 +195,9 @@ main() {
         libselinux1-dev \
         zlib1g-dev
 
+    # ubuntu no longer provides statically linked libmount
+    if_ubuntu_ge 22.04 build_static_libmount
+
     # if we have python3.6+, we can install qemu 7.0.0, which needs ninja-build
     # ubuntu 16.04 only provides python3.5, so remove when we have a newer qemu.
     is_ge_python36=$(python3 -c "import sys; print(int(sys.version_info >= (3, 6)))")

xtask/src/target_info.sh

@@ -288,6 +288,9 @@ case "${target}" in
             libc=$(max_glibc_version "${libdir}")
         fi
         ;;
+    riscv64gc-unknown-linux-gnu)
+        libc="$(dpkg-query --showformat='${Version}' --show libc6-riscv64-cross | cut -d- -f1)"
+        ;;
     *-*-linux-gnu*)
         toolchain_prefix="${!cc_var//-gcc/}"
         libdir="/usr/${toolchain_prefix}/lib"