scripts: enable LTO for Linux builds too

scripts/flatpak/su.xash.Engine.Compat.i386.yml

@@ -78,7 +78,7 @@ modules:
     build-options: *compat-i386-opts
     build-commands:
       - |
-        python waf configure -T release --enable-all-renderers --enable-packaging --prefix=/app --libdir=/app/lib32
+        python waf configure -T release --enable-all-renderers --enable-packaging --enable-lto --prefix=/app --libdir=/app/lib32
         python waf build
         python waf install --destdir=/
         mkdir -p /app/bin

scripts/gha/build_linux.sh

@@ -50,9 +50,9 @@ build_engine()
 	fi
 
 	if [ "$1" = "dedicated" ]; then
-		./waf configure -T release -d $AMD64 --enable-tests || die_configure
+		./waf configure -T release -d $AMD64 --enable-tests --enable-lto || die_configure
 	elif [ "$1" = "full" ]; then
-		./waf configure --sdl2=SDL2_linux -T release --enable-stb $AMD64 --enable-utils --enable-tests || die_confgure
+		./waf configure --sdl2=SDL2_linux -T release --enable-stb $AMD64 --enable-utils --enable-tests --enable-lto || die_confgure
 	else
 		die
 	fi