--- drivers/atm/Makefile.0	2004-04-04 05:36:15.000000000 +0200
+++ drivers/atm/Makefile	2004-10-12 09:22:04.569674328 +0200
@@ -39,7 +39,8 @@ ifeq ($(CONFIG_ATM_FORE200E_PCA),y)
   fore_200e-objs		+= fore200e_pca_fw.o
   # guess the target endianess to choose the right PCA-200E firmware image
   ifeq ($(CONFIG_ATM_FORE200E_PCA_DEFAULT_FW),y)
-    CONFIG_ATM_FORE200E_PCA_FW = $(shell if test -n "`$(CC) -E -dM $(src)/../../include/asm/byteorder.h | grep ' __LITTLE_ENDIAN '`"; then echo $(obj)/pca200e.bin; else echo $(obj)/pca200e_ecd.bin2; fi)
+    byteorder.h                 := include$(if $(patsubst $(srctree),,$(objtree)),2)/asm/byteorder.h
+    CONFIG_ATM_FORE200E_PCA_FW  := $(obj)/pca200e$(if $(shell $(CC) -E -dM $(byteorder.h) | grep ' __LITTLE_ENDIAN '),.bin,_ecd.bin2)
   endif
 endif