diff --git a/lib/efi/Makefile b/lib/efi/Makefile
index 5ee344c..4bc67f0 100644
--- a/lib/efi/Makefile
+++ b/lib/efi/Makefile
@@ -5,3 +5,12 @@
 #
 
 obj-$(CONFIG_EFI_APP) += efi_app.o efi.o
+
+CFLAGS_REMOVE_efi_stub.o := -mregparm=3 \
+	$(if $(CONFIG_EFI_STUB_64BIT),-march=i386 -m32)
+CFLAGS_efi_stub.o := -fpic -fshort-wchar
+CFLAGS_REMOVE_efi.o := -mregparm=3 \
+	$(if $(CONFIG_EFI_STUB_64BIT),-march=i386 -m32)
+CFLAGS_efi.o := -fpic -fshort-wchar
+
+extra-$(CONFIG_EFI_STUB) += efi_stub.o efi.o