From e6da6fa11fbff4af155c02e34b3b0cd7efd14d88 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Tue, 26 May 2026 21:55:58 -0500
Subject: [PATCH] Enable LTO for AppImage builds

---
 .github/workflows/build-appimage.yml | 4 ++--
 scripts/build-appimage.sh            | 5 +++++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build-appimage.yml b/.github/workflows/build-appimage.yml
index 2228a768..3b834c9a 100644
--- a/.github/workflows/build-appimage.yml
+++ b/.github/workflows/build-appimage.yml
@@ -48,7 +48,7 @@ jobs:
       - name: Build SDL3
         working-directory: deps/SDL
         run: |
-          cmake -DSDL_KMSDRM=OFF -DSDL_TEST_LIBRARY=OFF -DSDL_INSTALL_DOCS=OFF -S . -B build
+          cmake -DSDL_KMSDRM=OFF -DSDL_TEST_LIBRARY=OFF -DSDL_INSTALL_DOCS=OFF -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -S . -B build
           cmake --build build -j
           sudo cmake --install build
 
@@ -62,7 +62,7 @@ jobs:
       - name: Build sdl2-compat
         working-directory: deps/sdl2-compat
         run: |
-          cmake -DSDL2COMPAT_TESTS=OFF -S . -B build
+          cmake -DSDL2COMPAT_TESTS=OFF -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -S . -B build
           cmake --build build -j
           sudo cmake --install build
 
diff --git a/scripts/build-appimage.sh b/scripts/build-appimage.sh
index e959c555..c7d9c53f 100755
--- a/scripts/build-appimage.sh
+++ b/scripts/build-appimage.sh
@@ -32,6 +32,11 @@ mkdir $BUILD_FOLDER
 mkdir $DEPLOY_FOLDER
 mkdir $INSTALLER_FOLDER
 
+# Enable LTO for official builds
+export CFLAGS=-flto=auto
+export CXXFLAGS=-flto=auto
+export LDFLAGS=-flto=auto
+
 echo Configuring the project
 pushd $BUILD_FOLDER
 # Building with Wayland support will cause linuxdeploy to include libwayland-client.so in the AppImage.