Enable building of RV64 distribution file

Author: rui314

common/Dockerfile

@@ -1,17 +1,16 @@
 # This dockerfile creates a reproducible build environment for mold.
 #
 # $ docker buildx create --use
-# $ docker buildx build --platform x86_64,aarch64,arm,ppc64le,s390x -t rui314/mold-builder:latest --push .
+# $ docker buildx build --platform x86_64,aarch64,arm,ppc64le,s390x -t rui314/mold-builder:latest --push - < common/Dockerfile
 
 FROM ubuntu:18.04
-ENV TZ=Europe/London
 RUN apt-get update && \
   apt-get install -y --no-install-recommends software-properties-common && \
   add-apt-repository -y ppa:ubuntu-toolchain-r/test && \
   apt-get update && \
-  apt-get install -y --no-install-recommends build-essential wget libstdc++-11-dev zlib1g-dev gcc-10 g++-10 python3 libssl-dev && \
+  DEBIAN_FRONTEND=noninteractive TZ=UTC apt-get install -y --no-install-recommends build-essential wget libstdc++-11-dev gcc-10 g++-10 python3 libssl-dev && \
   \
   mkdir /cmake && cd /cmake && \
   wget -O- -q https://github.com/Kitware/CMake/releases/download/v3.24.2/cmake-3.24.2.tar.gz | tar --strip-components=1 -xzf - && \
   ./bootstrap --parallel=$(nproc) && make -j$(nproc) && make -j$(nproc) install && \
-  rm -rf /var/lib/apt/lists/* /cmake
+  rm -rf /var/lib/apt/lists /cmake

common/Dockerfile.riscv64

@@ -0,0 +1,8 @@
+# This dockerfile creates a reproducible build environment for mold.
+#
+# $ docker build --platform riscv64 -t rui314/mold-builder-riscv64:latest --push - < common/Dockerfile.riscv64
+
+FROM riscv64/ubuntu:20.04
+RUN apt-get update && \
+  DEBIAN_FRONTEND=noninteractive TZ=UTC apt-get install -y --no-install-recommends build-essential gcc-10 g++-10 cmake && \
+  rm -rf /var/lib/apt/lists

dist.sh

@@ -16,22 +16,28 @@ case $# in
   arch="$1"
   ;;
 *)
-  echo "Usage: $0 [ x86_64 | aarch64 | arm | ppc64le | s390x ]"
+  echo "Usage: $0 [ x86_64 | aarch64 | arm | riscv64 | ppc64le | s390x ]"
   exit 1
 esac
 
-echo "$arch" | grep -Eq '^(x86_64|aarch64|arm|ppc64le|s390x)$' || \
+echo "$arch" | grep -Eq '^(x86_64|aarch64|arm|riscv64|ppc64le|s390x)$' || \
   { echo "Error: no docker image for $arch"; exit 1; }
 
 version=$(sed -n 's/^project(mold VERSION \(.*\))/\1/p' $(dirname $0)/CMakeLists.txt)
 dest=mold-$version-$arch-linux
 set -e -x
 
+if [ $arch = riscv64 ]; then
+  image=rui314/mold-builder-riscv64
+else
+  image=rui314/mold-builder
+fi
+
 docker run --platform linux/$arch -i --rm -v "$(pwd):/mold" \
-  -e "OWNER=$(id -u):$(id -g)" rui314/mold-builder:latest \
-  bash -c "mkdir /tmp/build &&
-cd /tmp/build &&
-cmake -DCMAKE_C_COMPILER=gcc-10 -DCMAKE_CXX_COMPILER=g++-10 -DMOLD_MOSTLY_STATIC=On -DCMAKE_BUILD_TYPE=Release /mold &&
+  -e "OWNER=$(id -u):$(id -g)" $image:latest \
+  bash -c "mkdir /build &&
+cd /build &&
+cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=gcc-10 -DCMAKE_CXX_COMPILER=g++-10 -DMOLD_MOSTLY_STATIC=On /mold &&
 cmake --build . -j\$(nproc) &&
 [ $arch = arm ] || ctest -j\$(nproc) &&
 cmake --install . --prefix $dest --strip &&