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all: start.o dietlibc.a
ARCH=$(shell uname -m | sed 's/i[4-9]86/i386/')
CFLAGS=-pipe
CROSS=
VPATH=syscalls.c
SYSCALLOBJ=$(patsubst syscalls.s/%.S,%.o,$(wildcard syscalls.s/*.S))
LIBOBJ=$(patsubst lib/%.c,%.o,$(wildcard lib/*.c))
include $(ARCH)/Makefile.add
ifeq ($(CFLAGS),-pipe)
CFLAGS+=-O -fomit-frame-pointer
endif
#CFLAGS += -g
CFLAGS += -Wall
.SUFFIXES:
.SUFFIXES: .S .c
%.o: %.S
$(CROSS)gcc -I. -Iinclude $(CFLAGS) -c $<
%.o: %.c
$(CROSS)gcc -I. -Iinclude $(CFLAGS) -c $<
# $(CROSS)strip -x -R .comment -R .note $@
dietlibc.a: $(SYSCALLOBJ) $(LIBOBJ) __longjmp.o longjmp.o setjmp.o \
start.o unified.o mmap.o
$(CROSS)ar cru dietlibc.a $^
libdietc.so: dietlibc.a
$(CROSS)ld -whole-archive -shared -o $@ $^
$(SYSCALLOBJ): syscalls.h
djb: compile load
compile:
echo 'exec gcc $(CFLAGS) -I$(HOME)/projects/dietlibc/include -c $${1+"$$@"}' > $@
chmod 755 $@
load:
echo 'main="$$1"; shift; exec gcc -nostdlib -o "$$main" $(HOME)/projects/dietlibc/start.o "$$main".o $${1+"$$@"} $(HOME)/projects/dietlibc/dietlibc.a -lgcc' > $@
chmod 755 $@
clean:
rm -f *.o *.a t t1 compile load exports mapfile libdietc.so
tar: clean
cd .. && tar cvvf dietlibc.tar.bz2 dietlibc --use=bzip2
exports: dietlibc.a
nm -g dietlibc.a | grep -w T | awk '{ print $$3 }' | sort -u > exports
.PHONY: t t1
t:
$(CROSS)gcc -g $(CFLAGS) -fno-builtin -nostdlib -Iinclude -o t t.c start.o dietlibc.a -lgcc -Wl,-Map,mapfile
t1:
$(CROSS)gcc -g -o t1 t.c
install:
cp start.o $(prefix)/lib/dietstart.o
cp dietlibc.a $(prefix)/lib/libdietc.a
.PHONY: sparc ppc mips arm alpha i386
sparc ppc alpha i386:
$(MAKE) ARCH=$@ CROSS=$@-linux- all t libdietc.so
mips arm:
$(MAKE) ARCH=$@ CROSS=$@-linux-gnu- all t libdietc.so
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