From 269a7a6f55d0c532793417ed0ae7f0713a2a43e0 Mon Sep 17 00:00:00 2001
From: Lisa Marie Maginnis <lisa.maginnis.ext@wire.com>
Date: Tue, 22 Oct 2024 21:47:24 +0200
Subject: [PATCH] Added the ablity to select target architechture for linux
 builds via the enviormental variable `$ARCH`. Defaults to if ARCH not
 provided`x64`.

Updated the README to reflect new build options.
---
 README.md                          | 11 +++++++++++
 bin/build-tools/lib/build-linux.ts | 10 +++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 03483738079..afd419a4324 100644
--- a/README.md
+++ b/README.md
@@ -99,6 +99,17 @@ export ENABLE_ASAR="false"
 yarn build:linux
 ```
 
+### Other architectures
+
+To build for another architecture such as `arm64` run the following command:
+
+```shell
+export ARCH=<target>
+yarn build:linux
+```
+
+Replace `<target>` with your desired target (e.g. `arm64`). Have a look at the [documentation for `electron-builder`](https://www.electron.build/electron-builder.enumeration.arch) for the available target architectures. Only one architecture may be specified at a time.
+
 ### Troubleshooting
 
 If you are having troubles building Wire for Desktop, then [our troubleshooting page](https://github.com/wireapp/wire-desktop/wiki/Troubleshooting) might be of help.
diff --git a/bin/build-tools/lib/build-linux.ts b/bin/build-tools/lib/build-linux.ts
index 6ae6f490d0a..4ea09d0a457 100755
--- a/bin/build-tools/lib/build-linux.ts
+++ b/bin/build-tools/lib/build-linux.ts
@@ -130,7 +130,15 @@ export async function buildLinuxWrapper(
   packageJsonPath: string,
   wireJsonPath: string,
   envFilePath: string,
-  architecture: electronBuilder.Arch = electronBuilder.Arch.x64,
+  architecture: electronBuilder.Arch = (() => {
+    const archMap: { [key: string]: electronBuilder.Arch } = {
+      'arm64': electronBuilder.Arch.arm64,
+      'armv7l': electronBuilder.Arch.armv7l,
+      'ia32': electronBuilder.Arch.ia32,
+      'x64': electronBuilder.Arch.x64
+    };
+    return archMap[process.env.ARCH?.toLowerCase() || 'x64'];
+  })(),
 ): Promise<void> {
   const wireJsonResolved = path.resolve(wireJsonPath);
   const packageJsonResolved = path.resolve(packageJsonPath);