Arch Linux User Repository

I've created a package fvm-sourcebuild for those who want to build the engine from sources. It will cache build artifacts in the same place as flutter-engine (~/.cache/flutter-engine).

@djmattyg007 Will update.

@arslaanpathan Will add arm to package. But in future, please use a pastebin if you must send patches. However, doesn't make sense to post 44 lines when only one is needed. Also, your choice, but usually not good to feed the spam bots.

The license field is outdated. The project was converted to the Apache 2.0 license a couple of years ago.

I just tested this on aarch64/arm64 (Apple M2, Asahi Arch Linux ARM) by modifying the PKGBUILD. It works perfectly, you just need to apply the following patch.

I'd suggest applying this patch so that other users don't have to modify the PKGBUILD themselves.

From 5260b8f953e3f17c31ff8d42e38d821567bb217e Mon Sep 17 00:00:00 2001
From: Arslaan Pathan <arslaan@arslaancodes.com>
Date: Sat, 14 Feb 2026 14:41:17 +1300
Subject: [PATCH] Fix PKGBUILD to work on aarch64

---
 PKGBUILD | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/PKGBUILD b/PKGBUILD
index 0544140..556f3a8 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -15,7 +15,7 @@ pkgrel=2
 pkgdesc="An open source cross-platform alternative to AirDrop"
 url="https://github.com/localsend/localsend"
 license=('MIT')
-arch=('x86_64')
+arch=('x86_64' 'aarch64')

 depends=(
   'libayatana-appindicator'
@@ -38,6 +38,8 @@ _pkgsrc="$_pkgname-$pkgver"
 _pkgext="tar.gz"
 source=("$_pkgsrc.$_pkgext"::"$url/archive/refs/tags/v$pkgver.$_pkgext")
 sha256sums=('921c5843947580ae1b64d0d3a6edeefb9e07e8a917d0830af6a47d42e40de264')
+_arch="x64"
+[[ $CARCH == "aarch64" ]] && _arch="arm64"

 prepare() {
   sed -E 's&^(channel) = .*$&\1 = "stable"&' -i "$_pkgsrc/app/rust-toolchain.toml"
@@ -58,7 +60,7 @@ build() (
 )

 package() {
-  cd "$_pkgsrc/app/build/linux/x64/release/bundle"
+  cd "$_pkgsrc/app/build/linux/${_arch}/release/bundle"

   # files
   install -Dm755 "localsend_app" "$pkgdir/$_install_path/$_pkgname/$_pkgname"
-- 
2.53.0

@eXpansiiVe Upstream requires rustup. If you don't want to change packages installed on your system, build in a clean chroot.

When trying to install this package, I get this "error". Am I doing something wrong? rustup-1.28.2-3 and rust-1:1.90.0-3 are in conflict. Remove rust? [y/N]

I found out why: I was caching build output specifically for flutter packages since they need to download a bajillion things when I want to compile flutter from source. It compile fine after clearing it.

It doesn't solve my problem but I noticed that the build() function is using parenthesis instead of {}.

I am. I'm stumped, for some reason it is ignoring CXXFLAGS when I'm compiling in my containers but not outside. I tested with fvm package so it's not a fvm-sourcebuild problem. I echo $CXXFLAGS right before fvm build and the flag is there.