uclibc-ng/libc/Makefile

# Makefile for uClibc
#
# Copyright (C) 2000 by Lineo, inc.
# Copyright (C) 2000,2001 Erik Andersen <andersen@uclibc.org>
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU Library General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option) any
# later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
# details.
#
# You should have received a copy of the GNU Library General Public License
# along with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Derived in part from the Linux-8086 C library, the GNU C Library, and several
# other sundry sources.  Files within this library are copyright by their
# respective copyright holders.

#--------------------------------------------------------
#
#There are a number of configurable options in "Config"
#
#--------------------------------------------------------

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

ifeq ($(strip $(UCLIBC_CTOR_DTOR)),y)
CRTOBJS=../../lib/crti.o ../../lib/crt0.o ../../lib/crtn.o
else
CRTOBJS=../../lib/crt0.o
endif

ifeq ($(strip $(ADD_LIBGCC_FUNCTIONS)),y)
LIBGCC_NEED=./tmp/libgcc-need.a
else
LIBGCC=
endif

DIRS = misc pwd_grp stdio string termios inet signal stdlib sysdeps unistd

# Check if the target architecture has a version script for
# libc, and if so, include it when linking.
VERSION_SCRIPT:=${shell if [ -f sysdeps/linux/$(TARGET_ARCH)/libc.map ] ; then \
        echo "--version-script sysdeps/linux/$(TARGET_ARCH)/libc.map"; fi}

all: halfclean subdirs $(LIBNAME) $(DO_SHARED)

ar-target:
	$(CROSS)ranlib $(LIBNAME)
	$(INSTALL) -d $(TOPDIR)lib
	rm -f $(TOPDIR)lib/$(LIBNAME)
	$(INSTALL) -m 644 $(LIBNAME) $(TOPDIR)lib

$(LIBNAME): subdirs ar-target


shared: $(TOPDIR)lib/$(LIBNAME) $(LIBGCC_NEED)
	$(LD) $(LDFLAGS) $(VERSION_SCRIPT) -soname=$(SHARED_MAJORNAME) -o $(SHARED_FULLNAME) \
		--whole-archive $(LIBGCC_NEED) $(LIBNAME) \
		$(TOPDIR)/libc/misc/internals/interp.o --no-whole-archive \
		-init __uClibc_init $(LIBGCC)
	@true #rm -rf tmp
	$(INSTALL) -d $(TOPDIR)lib
	rm -f $(TOPDIR)lib/$(SHARED_FULLNAME)
	$(INSTALL) -m 644 $(SHARED_FULLNAME) $(TOPDIR)lib
	(cd ../lib && ln -sf $(SHARED_FULLNAME) libc.so);
	(cd ../lib && ln -sf $(SHARED_FULLNAME) $(SHARED_MAJORNAME));

$(LIBGCC_NEED): $(TOPDIR)lib/$(LIBNAME)
	@rm -rf tmp
	@mkdir tmp
	$(AR) rv $@
	(cd tmp && CC="$(CC)" LD="$(LD)" LDFLAGS="$(CPU_LDFLAGS-y)" \
		NM="$(NM)" AR="$(AR)" LIBGCC="$(LIBGCC)" CRTOBJS="$(CRTOBJS)" \
		/bin/sh $(TOPDIR)../extra/scripts/get-needed-libgcc-objects.sh)

halfclean:
	@rm -f $(LIBNAME) uClibc_config.h
	@rm -f $(SHARED_FULLNAME) $(SHARED_MAJORNAME) uClibc-0.* libc.so*

tags:
	ctags -R

clean: subdirs_clean halfclean
	@rm -rf tmp
	rm -f include/asm include/linux include/bits

subdirs: $(patsubst %, _dir_%, $(DIRS))
subdirs_clean: $(patsubst %, _dirclean_%, $(DIRS))

$(patsubst %, _dir_%, $(DIRS)) : dummy
	$(MAKE) -C $(patsubst _dir_%, %, $@)

$(patsubst %, _dirclean_%, $(DIRS)) : dummy
	$(MAKE) -C $(patsubst _dirclean_%, %, $@) clean

.PHONY: dummy subdirs