pull $CROSS_COMPILE from env. if present

Simple patch to pull CROSS_COMPILE from the environment if it's present, which makes it easier to compile the kernel with different compiler versions and such.

Thanks,
Jesse

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas:
# ChangeSet 1.1093 -> 1.1094
# Makefile 1.406 -> 1.407
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 03/05/19 [email protected] 1.1094

# make CROSS_COMPILE come from an env. variable if present
# --------------------------------------------
#
diff -Nru a/Makefile b/Makefile
--- a/Makefile	Mon May 19 12:49:12 2003
+++ b/Makefile	Mon May 19 12:49:12 2003
@@ -53,7 +53,7 @@
 HOSTCFLAGS	= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 HOSTCXXFLAGS	= -O2

-CROSS_COMPILE =
+CROSS_COMPILE ?=

# That's our default target when none is given on the command line
# Note that 'modules' will be added as a prerequisite as well,

I like it, but...

If we do it for CROSS_COMPILE we should do it for ARCH as well. Something like
ifeq ($(origin ARCH), undefined)
ARCH := $(SUBARCH)
endif

And then group ARCH and CROSS_COMPILE togeher in the Makefile, and provide a few meaningful comments.
I will test it tomorrow if you do not beat me in it.

Sam

That's a good idea too, I used that awhile back when all my ia64 compiles were x86->ia64 cross-compiles...

Thanks,
Jesse