Build armv7 deltachat-rpc-server binaries without NDK

.github/workflows/deltachat-rpc-server.yml

@@ -35,22 +35,29 @@ jobs:
           path: target/x86_64-unknown-linux-musl/release/deltachat-rpc-server
           if-no-files-found: error
 
-  build_aarch64_linux:
-    name: Cross-compile deltachat-rpc-server for aarch64 Linux
+  build_linux:
+    name: Cross-compile deltachat-rpc-server for aarch64 and armv7 Linux
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3
 
       - name: Build
-        run: sh scripts/aarch64-unknown-linux-musl.sh
+        run: sh scripts/zig-rpc-server.sh
 
-      - name: Upload binary
+      - name: Upload aarch64 binary
         uses: actions/upload-artifact@v3
         with:
           name: deltachat-rpc-server-aarch64
           path: target/aarch64-unknown-linux-musl/release/deltachat-rpc-server
           if-no-files-found: error
 
+      - name: Upload armv7 binary
+        uses: actions/upload-artifact@v3
+        with:
+          name: deltachat-rpc-server-armv7
+          path: target/armv7-unknown-linux-musleabihf/release/deltachat-rpc-server
+          if-no-files-found: error
+
   build_android:
     name: Cross-compile deltachat-rpc-server for Android (armeabi-v7a, arm64-v8a, x86 and x86_64)
     runs-on: ubuntu-22.04

scripts/README.md

@@ -20,7 +20,9 @@ and an own build machine.
 
 - `run_all.sh` builds Python wheels
 
-- `aarch64-unknown-linux-musl.sh` cross-compiles static `deltachat-rpc-server` for aarch64
+- `zig-rpc-server.sh` compiles binaries of `deltachat-rpc-server` using Zig toolchain statically linked against musl libc.
+
+- `android-rpc-server.sh` compiles binaries of `deltachat-rpc-server` using Android NDK.
 
 ## Triggering runs on the build machine locally (fast!)
 

scripts/aarch64-unknown-linux-musl.sh

@@ -1,18 +0,0 @@
-#!/bin/sh
-#
-# Build statically linked deltachat-rpc-server for aarch64-unknown-linux-musl.
-
-set -x
-set -e
-
-# Download Zig
-rm -fr zig-linux-x86_64-0.10.1 zig-linux-x86_64-0.10.1.tar.xz
-wget https://ziglang.org/download/0.10.1/zig-linux-x86_64-0.10.1.tar.xz
-tar xf zig-linux-x86_64-0.10.1.tar.xz
-export PATH="$PATH:$PWD/zig-linux-x86_64-0.10.1"
-
-cargo install cargo-zigbuild
-
-rustup target add aarch64-unknown-linux-musl
-
-cargo zigbuild --release --target aarch64-unknown-linux-musl -p deltachat-rpc-server --features vendored

scripts/zig-rpc-server.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+#
+# Build statically linked deltachat-rpc-server using cargo-zigbuild.
+
+set -x
+set -e
+
+unset RUSTFLAGS
+
+ZIG_VERSION=0.11.0-dev.1935+1d96a17af
+
+# Download Zig
+rm -fr "$ZIG_VERSION" "ZIG_VERSION.tar.xz"
+wget "https://ziglang.org/builds/zig-linux-x86_64-$ZIG_VERSION.tar.xz"
+tar xf "zig-linux-x86_64-$ZIG_VERSION.tar.xz"
+export PATH="$PWD/zig-linux-x86_64-$ZIG_VERSION:$PATH"
+
+cargo install cargo-zigbuild
+
+for TARGET in aarch64-unknown-linux-musl armv7-unknown-linux-musleabihf; do
+	rustup target add "$TARGET"
+	cargo zigbuild --release --target "$TARGET" -p deltachat-rpc-server --features vendored
+done