package/grub: fix build issues under 64bit FreeBSD

SVN-Revision: 23162

package/grub/Makefile

@@ -37,10 +37,6 @@ MY_CONFIGURE_ARGS += \
 	--disable-hercules \
 	--without-curses \
 
-ifeq ($(HOST_OS),FreeBSD)
-  MY_CONFIGURE_ARGS += --build=$(GNU_HOST_NAME) --host=$(GNU_TARGET_NAME) --target=$(GNU_TARGET_NAME)
-endif
-
 MY_CONFIGURE_VARS += \
 	grub_cv_prog_objcopy_absolute=yes \
 
@@ -53,6 +49,14 @@ ifeq ($(HOST_OS),Darwin)
   HOST_CFLAGS += $(call host-cc-option,-fnested-functions)
 endif
 
+ifeq ($(HOST_OS),FreeBSD)
+  ifeq ($(HOST_ARCH),amd64)
+    HOST_CFLAGS += $(call host-cc-option,-m32)
+    HOST_CFLAGS += $(call host-cc-option,-B/usr/lib32)
+    HOST_CFLAGS += $(call host-cc-option,-L/usr/lib32)
+  endif
+endif
+
 HOST_CFLAGS += $(call host-cc-option,-fno-stack-protector)
 HOST_CFLAGS += $(call host-cc-option,-U_FORTIFY_SOURCE)