From a962b181b54e8f57f1470bca8bb2db9a562d7827 Mon Sep 17 00:00:00 2001
From: ee7 <45465154+ee7@users.noreply.github.com>
Date: Thu, 17 Aug 2023 10:59:26 +0200
Subject: [PATCH] .github: cross-compile riscv64 Linux asset (#798)

Continue the recent `zig cc` work [1], such that the next configlet
release will have two new release assets:

    configlet_4.0.0-beta.14_linux_riscv64.tar.gz
    configlet_4.0.0-beta.14_linux_riscv64.tar.gz.minisig

where the archive contains the executable:

    $ file ./configlet
    ./configlet: ELF 64-bit LSB executable, UCB RISC-V, RVC, double-float ABI, version 1 (SYSV), statically linked, stripped

The riscv64-linux-musl target will have Tier 1 Zig support [2].

Refs: #24

[1] 0e8d6659e43d, ".github, config: use Zig to cross-compile arm64 Linux asset", 2023-08-13
[2] https://ziglang.org/download/0.11.0/release-notes.html#Support-Table
---
 .github/bin/cross-compile   | 10 +++++++++-
 .github/workflows/build.yml |  3 +++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/.github/bin/cross-compile b/.github/bin/cross-compile
index d175d43c..b1c12a4d 100755
--- a/.github/bin/cross-compile
+++ b/.github/bin/cross-compile
@@ -8,7 +8,15 @@ zig_target="${ZIG_TARGET}"
 
 cross_compile() {
   local target="$1"
-  local arch='arm64'
+
+  local zig_arch
+  zig_arch="$(cut -d'-' -f1 <<< "${target}")"
+  local arch
+  case "${zig_arch}" in
+    aarch64) arch='arm64'       ;;
+    *)       arch="${zig_arch}" ;;
+  esac
+
   local os
   os="$(cut -d'-' -f2 <<< "${target}")"
   local nim_os
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 27bf092f..7c063d55 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -81,6 +81,9 @@ jobs:
           - runs-on: ubuntu-22.04
             zig_target: aarch64-linux-musl
 
+          - runs-on: ubuntu-22.04
+            zig_target: riscv64-linux-musl
+
           - runs-on: macos-12
             zig_target: aarch64-macos-none