WonderInventions · ignatiusreza · Jul 7, 2026
diff --git a/README.md b/README.md
@@ -36,13 +36,14 @@ still be able to [build from source](docs/build-from-source.md).
   <thead>
     <tr>
       <td colspan="2" rowspan="2"></td>
-      <th colspan="2">Linux</th>
+      <th colspan="3">Linux</th>
       <th colspan="2">macOS</th>
       <th>Windows</th>
     </tr>
     <tr>
       <th>x64</th>
       <th>arm64</th>
+      <th>arm</th>
       <th>x64</th>
       <th>arm64</th>
       <th>x64</th>
@@ -57,6 +58,7 @@ still be able to [build from source](docs/build-from-source.md).
       <td align="center">✓</td>
       <td align="center">✓</td>
       <td align="center">✓</td>
+      <td align="center">✓</td>
     </tr>
     <tr>
       <th>22</th>
@@ -65,6 +67,7 @@ still be able to [build from source](docs/build-from-source.md).
       <td align="center">✓</td>
       <td align="center">✓</td>
       <td align="center">✓</td>
+      <td align="center">✓</td>
     </tr>
   </tbody>
 </table>

diff --git a/docs/build-from-source.md b/docs/build-from-source.md
@@ -50,10 +50,11 @@ The supported cross-compilation directions are:
 - MacOS arm64 ➡️ MacOS x64
 - MacOS x64 ➡️ ️MacOS arm64
 - Linux x64 ➡️ Linux arm64
+- Linux x64 ➡️ Linux arm (32-bit, e.g. Raspberry Pi 3B+)
 
 To run e.g. that that cross-compilation:
 
-1. Set `TARGET_ARCH` to "arm64"
+1. Set `TARGET_ARCH` to "arm64" (or "arm" for 32-bit ARM)
 2. Re-run `npm run build`
 
 ### Debug Builds

diff --git a/package.json b/package.json
@@ -27,6 +27,7 @@
   "optionalDependencies": {
     "@roamhq/wrtc-darwin-arm64": "0.10.0",
     "@roamhq/wrtc-darwin-x64": "0.10.0",
+    "@roamhq/wrtc-linux-arm": "0.10.0",
     "@roamhq/wrtc-linux-arm64": "0.10.0",
     "@roamhq/wrtc-linux-x64": "0.10.0",
     "@roamhq/wrtc-win32-x64": "0.10.0",

diff --git a/prebuilds/linux-arm/README.md b/prebuilds/linux-arm/README.md
@@ -0,0 +1,4 @@
+# wrtc
+
+This is the Linux 32-bit ARM binary build for @roamhq/wrtc.
+See https://github.com/WonderInventions/node-webrtc for details.
diff --git a/prebuilds/linux-arm/index.js b/prebuilds/linux-arm/index.js
@@ -0,0 +1,2 @@
+"use strict";
+module.exports = require("./wrtc.node");
diff --git a/prebuilds/linux-arm/package.json b/prebuilds/linux-arm/package.json
@@ -0,0 +1,16 @@
+{
+  "name": "@roamhq/wrtc-linux-arm",
+  "version": "0.10.0",
+  "description": "The Linux 32-bit ARM binary for @roamhq/wrtc.",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/WonderInventions/node-webrtc.git"
+  },
+  "license": "BSD-2-Clause",
+  "os": [
+    "linux"
+  ],
+  "cpu": [
+    "arm"
+  ]
+}
diff --git a/shell.nix b/shell.nix
@@ -23,8 +23,11 @@ let
         nativeBuildInputs =
           (with pkgs; [
             cmake
+            curl
+            git
             ninja
             nodejs_22
+            perl
             pkg-config
             zlib
             # For stripping binaries for release
@@ -41,6 +44,7 @@ let
           ])
           ++ (lib.optionals (!is-darwin) [
             (llvm pkgs.pkgsCross.aarch64-multiplatform.buildPackages).clang
+            (llvm pkgs.pkgsCross.armv7l-hf-multiplatform.buildPackages).clang
           ]);
         # Build variables based on documentation from https://github.com/timniederhausen/gn-build/blob/01c96fd9981b111a3a028356284968acd77fa435/README.md
         shellHook =

diff --git a/toolchains/linux-arm.toolchain b/toolchains/linux-arm.toolchain
@@ -0,0 +1,5 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR arm)
+
+set(CMAKE_C_COMPILER armv7l-unknown-linux-gnueabihf-clang)
+set(CMAKE_CXX_COMPILER armv7l-unknown-linux-gnueabihf-clang++)
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		"use strict";
		module.exports = require("./wrtc.node");