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-rw-r--r--Rules.mak24
1 files changed, 11 insertions, 13 deletions
diff --git a/Rules.mak b/Rules.mak
index dfc2777ef..3ee323527 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -34,23 +34,23 @@ BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z")
# to something more interesting... Target architecture is determined
# by asking the CC compiler what arch it compiles things for, so unless
# your compiler is broken, you should not need to specify TARGET_ARCH
-CROSS =$(subst ",, $(strip $(CROSS_COMPILER_PREFIX)))
+CROSS ?=$(subst ",, $(strip $(CROSS_COMPILER_PREFIX)))
#CROSS =/usr/i386-linux-uclibc/bin/i386-uclibc-
-CC = $(CROSS)gcc
-AR = $(CROSS)ar
-AS = $(CROSS)as
-LD = $(CROSS)ld
-NM = $(CROSS)nm
-STRIP = $(CROSS)strip
-CPP = $(CC) -E
+CC ?= $(CROSS)gcc
+AR ?= $(CROSS)ar
+AS ?= $(CROSS)as
+LD ?= $(CROSS)ld
+NM ?= $(CROSS)nm
+STRIP ?= $(CROSS)strip
+CPP ?= $(CC) -E
MAKEFILES = $(TOPDIR).config
# What OS are you compiling busybox for? This allows you to include
# OS specific things, syscall overrides, etc.
-TARGET_OS=linux
+TARGET_OS?=linux
# Select the compiler needed to build binaries for your development system
-HOSTCC = gcc
+HOSTCC ?= gcc
HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
@@ -86,8 +86,7 @@ ARFLAGS=-r
#--------------------------------------------------------
export VERSION BUILDTIME TOPDIR HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP
-ifeq ($(strip $(TARGET_ARCH)),)
-TARGET_ARCH=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
+TARGET_ARCH?=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
-e 's/i.86/i386/' \
-e 's/sparc.*/sparc/' \
-e 's/arm.*/arm/g' \
@@ -99,7 +98,6 @@ TARGET_ARCH=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
-e 's/mipsel-.*/mipsel/' \
-e 's/cris.*/cris/' \
)
-endif
# Pull in the user's busybox configuration
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)