Update LTO configuration and enable Clang plugin for Linux builds

.github/workflows/linux-release-build.yml

@@ -128,6 +128,10 @@ jobs:
         continue-on-error: true
         run: |
           export SURFER_PLATFORM="linux"
+          if test "${{ matrix.arch }}" = "x86_64-v3"; then
+            # TODO: Fix this!
+            export ZEN_DISABLE_LTO=1
+          fi
           sh .github/workflows/src/release-build.sh
 
       - name: Build again if it failed

configs/common/mozconfig

@@ -54,8 +54,8 @@ if test "$ZEN_RELEASE"; then
   ac_add_options --disable-default-browser-agent
 
   if ! test "$ZEN_DISABLE_LTO"; then
-    export MOZ_LTO=cross,full
-    ac_add_options --enable-lto=cross,full
+    export MOZ_LTO=cross,thin
+    ac_add_options --enable-lto=cross,thin
   fi
 
   ac_add_options --enable-jemalloc

configs/linux/mozconfig

@@ -8,7 +8,6 @@ else
 fi
 
 if test "$SURFER_COMPAT" = "x86_64"; then
-    ac_add_options --enable-clang-plugin
     ac_add_options --target=x86_64-pc-linux
     ac_add_options --enable-eme=widevine
 
@@ -25,7 +24,6 @@ if test "$SURFER_COMPAT" = "x86_64"; then
     export LDFLAGS="$LDFLAGS -Wl,-O3 -Wl,-mllvm,-fp-contract=fast -march=x86-64"
     export RUSTFLAGS="$RUSTFLAGS -C target-cpu=x86-64 -C codegen-units=1 -Clink-args=--icf=safe"
 elif test "$SURFER_COMPAT" = "aarch64"; then
-    ac_add_options --enable-clang-plugin
     ac_add_options --target=aarch64-linux-gnu
 
     ac_add_options --enable-optimize="-O3"
@@ -63,6 +61,7 @@ ac_add_options --enable-alsa
 ac_add_options --enable-pulseaudio
 
 if test "$ZEN_RELEASE"; then
+    ac_add_options --enable-clang-plugin
 
     # Disable DMD and ELF hacks, enable linker lld
     ac_add_options --disable-dmd