uclibc-ng/extra/gcc-uClibc/Makefile

TOPDIR = ../../
include $(TOPDIR)Rules.mak

UCLIBC_DIR = $(shell (cd ../.. ; /bin/pwd))
GCC_BIN = $(CC)
GCC_LIB = $(shell $(CC) -print-libgcc-file-name )
#GCCINCDIR inherited from Rules.mak

NATIVE_ARCH = $(shell uname -m | sed -e 's/i.86/i386/' -e 's/sparc.*/sparc/' -e 's/arm.*/arm/g')
GCC_UCLIBC = gcc-uClibc-cross
ifeq ($(TARGET_ARCH), $(NATIVE_ARCH))
	GCC_UCLIBC = gcc-uClibc-native
endif

all: $(GCC_UCLIBC)

clean:
	rm -f gcc-uClibc.h gcc-uClibc-*

gcc-uClibc.h: clean
	echo "/* this file is created by make */" > gcc-uClibc.h
	echo "#define UCLIBC_DIR " \"$(UCLIBC_DIR)/\" >> gcc-uClibc.h
	echo "#define GCC_BIN " \"$(GCC_BIN)\" >> gcc-uClibc.h
	echo "#define GCC_LIB " \"$(GCC_LIB)\" >> gcc-uClibc.h
	echo "#define GCC_INCDIR " \"-I$(GCCINCDIR)/\" >> gcc-uClibc.h
	echo "#define TARGET_ARCH " \"$(TARGET_ARCH)\" >> gcc-uClibc.h

gcc-uClibc-native: gcc-uClibc.h gcc-uClibc.c
	# uClibc built for native environment, so why not use it ;-)
	$(CC) $(CFLAGS) -nostdinc -I$(UCLIBC_DIR)/include -I$(GCC_INC) \
		-Wl,-static gcc-uClibc.c \
		$(UCLIBC_DIR)/sysdeps/linux/$(TARGET_ARCH)/_start.o \
		-nostdlib $(GCC_LIB) $(UCLIBC_DIR)/libc.a \
		-s -o gcc-uClibc-$(TARGET_ARCH) #-DDEBUG

gcc-uClibc-cross: gcc-uClibc.h gcc-uClibc.c
	# don't use CFLAGS since may not be appropriate
	gcc -s gcc-uClibc.c -o gcc-uClibc-$(TARGET_ARCH)