From 3f4b72634826552bb2554a5782977143f6daa61d Mon Sep 17 00:00:00 2001
From: Luca Boccassi <luca.boccassi@gmail.com>
Date: Fri, 29 May 2026 18:17:25 +0100
Subject: [PATCH] ci: add build coverage for riscv64

This is already a primary architecture in Ubuntu, and more distributions
are adding support for it. It's too slow for emulation, but we can at
least verify that compilation works.

Use the arm worker, for two reasons:

- it is already set up with ports.ubuntu.com so we don't have to muck
  with apt sources manually
- it is used a lot less than the x86 worker
---
 .github/workflows/build-test.sh     |  3 +++
 .github/workflows/build-test.yml    |  3 +++
 .github/workflows/riscv64-gcc.cross | 21 +++++++++++++++++++++
 3 files changed, 27 insertions(+)
 create mode 100644 .github/workflows/riscv64-gcc.cross

diff --git a/.github/workflows/build-test.sh b/.github/workflows/build-test.sh
index 784340ec45..9c3d2e7338 100755
--- a/.github/workflows/build-test.sh
+++ b/.github/workflows/build-test.sh
@@ -96,6 +96,9 @@ if [[ -n "$CROSS_ARCH" ]]; then
         armhf)
             triplet=arm-linux-gnueabihf
             ;;
+        riscv64)
+            triplet=riscv64-linux-gnu
+            ;;
         *)
             fatal "Unsupported cross architecture: $CROSS_ARCH"
             ;;
diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 2596b3edb5..a5b2027139 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -42,6 +42,9 @@ jobs:
           - env: { COMPILER: "gcc",   COMPILER_VERSION: "13", LINKER: "bfd", CROSS_ARCH: "armhf"  }
             runner: [ ubuntu-24.04-arm ]
             python-version: ''
+          - env: { COMPILER: "gcc",   COMPILER_VERSION: "13", LINKER: "bfd", CROSS_ARCH: "riscv64"  }
+            runner: [ ubuntu-24.04-arm ]
+            python-version: ''
           - env: { COMPILER: "clang", COMPILER_VERSION: "18", LINKER: "lld"  }
             runner: [ ubuntu-24.04-s390x ]
             python-version: ''
diff --git a/.github/workflows/riscv64-gcc.cross b/.github/workflows/riscv64-gcc.cross
new file mode 100644
index 0000000000..8096e45192
--- /dev/null
+++ b/.github/workflows/riscv64-gcc.cross
@@ -0,0 +1,21 @@
+[binaries]
+c = 'riscv64-linux-gnu-gcc'
+cpp = 'riscv64-linux-gnu-g++'
+ar = 'riscv64-linux-gnu-gcc-ar'
+nm = 'riscv64-linux-gnu-gcc-nm'
+strip = 'riscv64-linux-gnu-strip'
+pkgconfig = 'pkg-config'
+
+[properties]
+needs_exe_wrapper = true
+pkg_config_libdir = '/usr/lib/riscv64-linux-gnu/pkgconfig:/usr/share/pkgconfig'
+c_args = ['-O2', '-pipe', '-g', '-feliminate-unused-debug-types']
+c_link_args = ['-fuse-ld=bfd', '-Wl,-O1', '-Wl,--hash-style=gnu', '-Wl,--as-needed', '-Wl,-z,relro,-z,now,-z,noexecstack']
+cpp_args = []
+cpp_link_args = ['-fuse-ld=bfd', '-Wl,-O1', '-Wl,--hash-style=gnu', '-Wl,--as-needed', '-Wl,-z,relro,-z,now,-z,noexecstack']
+
+[host_machine]
+system = 'linux'
+cpu_family = 'riscv64'
+cpu = 'riscv64'
+endian = 'little'