-STAGE2_CFLAGS += -fwhopr=jobserver -fuse-linker-plugin -frandom-seed=1
-STAGE3_CFLAGS += -fwhopr=jobserver -fuse-linker-plugin -frandom-seed=1
-
-# Ada fails to build with LTO, turn it off for now.
-BOOT_ADAFLAGS += -fno-lto
+STAGE2_CFLAGS += -flto=jobserver -frandom-seed=1
+STAGE3_CFLAGS += -flto=jobserver -frandom-seed=1
+STAGEprofile_CFLAGS += -fno-lto