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# 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 $(TOPDIR)Rules.mak
DIRS = misc pwd_grp stdio string termios inet signal stdlib sysdeps unistd
# Check if the target architecture has a version script for
# libc, and if so, include it when linking.
VERSION_SCRIPT:=${shell if [ -f sysdeps/linux/$(TARGET_ARCH)/libc.map ] ; then \
echo "--version-script sysdeps/linux/$(TARGET_ARCH)/libc.map"; fi}
# we have SHARED_MAJORNAME=libc.so.$(MAJOR_VERSION) defined in Rules.mak
LIB_NAME=libc
AR_LIB_NAME=$(TOPDIR)lib/$(LIB_NAME).a
SO_LIB_NAME=$(TOPDIR)lib/$(LIB_NAME).so
SO_FULL_NAME=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
ifeq ($(strip $(HAVE_SHARED)),y)
all: $(SO_LIB_NAME)
else
all: $(AR_LIB_NAME)
endif
# Some functions are duplicated across subdirs, and when you pass $(AR)
# the same object file more than once, it'll add it to the archive multiple
# times (boo!). So what we do here is:
# - import all the objects (thus we may have dupes)
# - delete all the dupes
# - re-import certain objects based upon preference
# - the sysdeps dir should override all other symbols for example
# We need to use shell globbing with obj.* because if we use make's wildcard,
# the wildcard will be evaluated when `make` is run instead of when the make
# target is evaluated. That means if you run `rm obj.* ; make`, the wildcard
# will evaluate to no files :(.
shared_$(LIB_NAME).a: subdirs
$(RM) shared_$(LIB_NAME).a obj.pthread.*
objs=`cat obj.*` ; \
$(AR) $(ARFLAGS) shared_$(LIB_NAME).a $$objs && \
$(AR) dN 2 shared_$(LIB_NAME).a $$objs && \
$(AR) dN 2 shared_$(LIB_NAME).a $$objs
@for objfile in obj.signal \
obj.string.generic obj.string.$(TARGET_ARCH) obj.string \
obj.sysdeps.common obj.sysdeps.$(TARGET_ARCH) ; do \
if [ -e $$objfile ] ; then \
if [ "$(MAKE_IS_SILENT)" = "n" ] ; then \
echo $(AR) $(ARFLAGS) shared_$(LIB_NAME).a $$objfile ; \
fi ; \
objs=`cat $$objfile` ; \
fi ; \
$(AR) $(ARFLAGS) shared_$(LIB_NAME).a $$objs || exit 1 ; \
done
$(AR_LIB_NAME): shared_$(LIB_NAME).a
$(INSTALL) -d $(TOPDIR)lib
$(RM) $(AR_LIB_NAME)
cp shared_$(LIB_NAME).a $(AR_LIB_NAME)
$(AR) $(ARFLAGS) $(AR_LIB_NAME) `cat nonshared_obj.*`
ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
$(MAKE) -C $(TOPDIR)libpthread/nptl obj.pthread.ar
$(AR) $(ARFLAGS) $(AR_LIB_NAME) `cat obj.pthread.ar`
endif
$(SO_LIB_NAME): $(AR_LIB_NAME)
$(RM) $(TOPDIR)lib/$(SO_FULL_NAME) $(TOPDIR)lib/$(SHARED_MAJORNAME) $(SO_LIB_NAME)
ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
$(MAKE) -C $(TOPDIR)libpthread/nptl obj.pthread.so
$(AR) $(ARFLAGS) shared_$(LIB_NAME).a `cat obj.pthread.so`
endif
$(LD) $(LDFLAGS) $(VERSION_SCRIPT) -soname=$(SHARED_MAJORNAME) \
-o $(TOPDIR)lib/$(SO_FULL_NAME) --whole-archive shared_$(LIB_NAME).a \
--no-whole-archive $(TOPDIR)libc/misc/internals/interp.o \
-init __uClibc_init $(TOPDIR)lib/$(UCLIBC_LDSO) $(LDADD_LIBFLOAT) $(LIBGCC)
$(LN) -sf $(SO_FULL_NAME) $(TOPDIR)lib/$(SHARED_MAJORNAME)
$(RM) $(TOPDIR)lib/$(NONSHARED_LIBNAME)
$(AR) $(ARFLAGS) $(TOPDIR)lib/$(NONSHARED_LIBNAME) `cat nonshared_obj.*`
echo "/* GNU ld script" > $(SO_LIB_NAME)
echo " * Use the shared library, but some functions are only in" >> $(SO_LIB_NAME)
echo " * the static library, so try that secondarily. */" >> $(SO_LIB_NAME)
#OUT_FORMAT:=$(shell $(LD) --verbose | grep OUTPUT_FORMAT | awk -F '"' '{print $2}')
#echo "OUTPUT_FORMAT($(OUT_FORMAT))" >> $(SO_LIB_NAME)
ifeq ($(strip $(COMPAT_ATEXIT)),y)
echo "GROUP ( $(TOPDIR)lib/$(NONSHARED_LIBNAME) $(TOPDIR)lib/$(SHARED_MAJORNAME) )" >> $(SO_LIB_NAME)
else
echo "GROUP ( $(TOPDIR)lib/$(SHARED_MAJORNAME) $(TOPDIR)lib/$(NONSHARED_LIBNAME) )" >> $(SO_LIB_NAME)
endif
tags:
ctags -R
clean: subdirs_clean
$(RM) *.a obj.* nonshared_obj.*
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
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