From 15de97e33f462434272f13e1ec3aa9cd5387441b Mon Sep 17 00:00:00 2001
From: Meng Zhuo <mzh@golangcn.org>
Date: Thu, 30 May 2024 19:20:21 +0800
Subject: [PATCH] Add linux.riscv64 precompiled support

---
 .github/workflows/build.yml    |  2 +-
 .multi_arch_docker             |  1 +
 CHANGELOG.md                   |  1 +
 build/linux.riscv64/Dockerfile | 47 ++++++++++++++++++++++++++++++++++
 build/linux.riscv64/build      | 15 +++++++++++
 build/linux.riscv64/tag        |  1 +
 6 files changed, 66 insertions(+), 1 deletion(-)
 create mode 100644 build/linux.riscv64/Dockerfile
 create mode 100755 build/linux.riscv64/build
 create mode 100644 build/linux.riscv64/tag

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c49b25a3f..e30b2ac8f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -47,7 +47,7 @@ jobs:
     needs: package_source
     strategy:
       matrix:
-        build: [linux.x86_64, linux.aarch64, linux.armv6hf, darwin.x86_64, darwin.aarch64, windows.x86_64]
+        build: [linux.x86_64, linux.aarch64, linux.armv6hf, linux.riscv64, darwin.x86_64, darwin.aarch64, windows.x86_64]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
diff --git a/.multi_arch_docker b/.multi_arch_docker
index 1c5d32b9e..81048a229 100755
--- a/.multi_arch_docker
+++ b/.multi_arch_docker
@@ -80,6 +80,7 @@ function multi_arch_docker::main() {
   export DOCKER_PLATFORMS='linux/amd64'
   DOCKER_PLATFORMS+=' linux/arm64'
   DOCKER_PLATFORMS+=' linux/arm/v6'
+  DOCKER_PLATFORMS+=' linux/riscv64'
 
   multi_arch_docker::install_docker_buildx
   multi_arch_docker::login_to_docker_hub
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ae176d01..43db00cbb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - SC2327/SC2328: Warn about capturing the output of redirected commands.
 - SC2329: Warn when (non-escaping) functions are never invoked.
 - SC2330: Warn about unsupported glob matches with [[ .. ]] in BusyBox.
+- Precompiled binaries for Linux riscv64 (linux.riscv64)
 ### Changed
 - SC2015 about `A && B || C` no longer triggers when B is a test command.
 ### Fixed
diff --git a/build/linux.riscv64/Dockerfile b/build/linux.riscv64/Dockerfile
new file mode 100644
index 000000000..648ef2da5
--- /dev/null
+++ b/build/linux.riscv64/Dockerfile
@@ -0,0 +1,47 @@
+FROM ubuntu:22.04
+
+ENV TARGETNAME linux.riscv64
+ENV TARGET riscv64-linux-gnu
+
+USER root
+ENV DEBIAN_FRONTEND noninteractive
+
+# Init base
+RUN apt update -y
+
+# Install qemu
+RUN apt install -y --no-install-recommends build-essential ninja-build python3 pkg-config libglib2.0-dev libpixman-1-dev curl ca-certificates python3-virtualenv
+WORKDIR /qemu
+RUN curl -Lv "https://download.qemu.org/qemu-9.0.0.tar.xz" | tar xJ --strip-components=1
+RUN ./configure --target-list=riscv64-linux-user --static --disable-system --disable-pie
+RUN cd build && ninja qemu-riscv64
+ENV QEMU_EXECVE 1
+
+
+# Set up a riscv64 userspace
+RUN apt install -y --no-install-recommends debootstrap
+RUN debootstrap --arch=riscv64 --foreign jammy /rvfs http://ports.ubuntu.com/ubuntu-ports
+RUN cp /qemu/build/qemu-riscv64 /rvfs/usr/bin/qemu-riscv64-static
+
+RUN printf > /bin/rv '%s\n' '#!/bin/sh' 'chroot /rvfs /usr/bin/qemu-riscv64-static /usr/bin/env "$@"'
+RUN chmod +x /bin/rv
+RUN [ ! -e /rvfs/debootstrap ] || rv '/debootstrap/debootstrap' --second-stage
+
+# Install deps in the chroot
+RUN printf > /rvfs/etc/apt/sources.list '%s\n' 'deb http://ports.ubuntu.com/ubuntu-ports jammy main universe'
+RUN rv apt update -y
+RUN rv apt install -y --no-install-recommends ghc cabal-install
+
+# Finally we can build the current dependencies. This takes hours.
+# jobs must be 1, GHS riscv will use about 40G memory
+RUN rv cabal update
+RUN IFS=";" && rv cabal install --dependencies-only --jobs=1 ShellCheck
+RUN IFS=';' && rv cabal install --lib --jobs=1 fgl
+
+# Clean up
+RUN rm -rf /qemu
+
+# Copy the build script
+WORKDIR /rvfs/scratch
+COPY build /rvfs/usr/bin/build
+ENTRYPOINT ["/bin/rv", "/usr/bin/build"]
diff --git a/build/linux.riscv64/build b/build/linux.riscv64/build
new file mode 100755
index 000000000..19cb143c3
--- /dev/null
+++ b/build/linux.riscv64/build
@@ -0,0 +1,15 @@
+#!/bin/sh
+set -xe
+{
+  tar xzv --strip-components=1
+  chmod +x striptests && ./striptests
+  mkdir "$TARGETNAME"
+  cabal update
+  ( IFS=';'; cabal build --enable-executable-static )
+  find . -name shellcheck -type f -exec mv {} "$TARGETNAME/" \;
+  ls -l "$TARGETNAME"
+  "$TARGET-strip" -s "$TARGETNAME/shellcheck"
+  ls -l "$TARGETNAME"
+  qemu-riscv64-static "$TARGETNAME/shellcheck" --version
+} >&2
+tar czv "$TARGETNAME"
diff --git a/build/linux.riscv64/tag b/build/linux.riscv64/tag
new file mode 100644
index 000000000..901eaaa2b
--- /dev/null
+++ b/build/linux.riscv64/tag
@@ -0,0 +1 @@
+koalaman/scbuilder-linux-riscv64