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# Makefile for uClibc
#
# Copyright (C) 2000 by Lineo, inc.
# Copyright (C) 2000-2002 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.
TOPDIR=../../
include $(TOPDIR)Rules.mak
LDSO_FULLNAME=ld-uClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
# Enable this to enable all the code needed to support traditional ldd
# (i.e. where the shared library loader does all the heavy lifting)
# Since this currently only saves about 300 bytes, I'm going to leave
# it enabled...
XXFLAGS+= -DLD_TRACE
# Enable this to enable all the code needed for debugging the runtime
# linking of an application using the LD_DEBUG environment variable:
# LD_DEBUG=token1,token2,.. prog
# enables diagnostics to the stderr.
# For now there are these tokens possible:
# bindings displays the resolve processing (function calls); detail shows the relocation patch
# detail provide more information for some options
# move display copy processings
# reloc display relocation processing; detail shows the relocation patch
# symbols display symbol table processing
#
# The additional environment variable:
# LD_DEBUG_OUTPUT=file
# redirects the diagnostics to an output file created using
# the specified name and the process id as a suffix.
#
# try this
# $ LD_DEBUG=binding,move,symbols,reloc,detail LD_DEBUG_OUTPUT=appname ./appname
#
#XXFLAGS+= -DSUPPORT_LD_DEBUG
# Enable this for the very very early debugging. Really only useful
# for people porting to new architectures.
#XXFLAGS+= -DLD_DEBUG
# Enable this to never actually fixup symbols...
#XXFLAGS+= -DLD_NEVER_FIXUP_SYMBOLS
XXFLAGS+=-DUCLIBC_TARGET_PREFIX=\"$(TARGET_PREFIX)\" \
-DUCLIBC_DEVEL_PREFIX=\"$(DEVEL_PREFIX)\" \
-DUCLIBC_BUILD_DIR=\"$(shell cd $(TOPDIR) && pwd)\"
LDFLAGS=-shared --warn-common --export-dynamic --sort-common \
-z combreloc --discard-locals --discard-all
CSRC= ldso.c #hash.c readelflib1.c $(TARGET_ARCH)/elfinterp.c
COBJS=$(patsubst %.c,%.o, $(CSRC))
ASRC=$(shell ls $(TARGET_ARCH)/*.S)
AOBJS=$(patsubst %.S,%.o, $(ASRC))
OBJS=$(AOBJS) $(COBJS)
ifeq ($(strip $(TARGET_ARCH)),cris)
LDFLAGS+=-mcrislinux
endif
ifneq ($(strip $(DODEBUG)),true)
LDFLAGS+=-s
endif
all: lib
lib:: ldso.h $(OBJS) $(DLINK_OBJS)
$(LD) $(LDFLAGS) -e _dl_boot -soname=$(UCLIBC_LDSO) \
-o $(LDSO_FULLNAME) $(OBJS) $(LIBGCC);
install -d $(TOPDIR)lib
install -m 755 $(LDSO_FULLNAME) $(TOPDIR)lib
(cd $(TOPDIR)lib && ln -sf $(LDSO_FULLNAME) $(UCLIBC_LDSO))
ldso.h: Makefile
echo "const char *_dl_progname=\""$(UCLIBC_LDSO)"\";" > ldso.h
echo "#include \"$(TARGET_ARCH)/elfinterp.c\"" >> ldso.h
$(COBJS): %.o : %.c
$(CC) $(CFLAGS) $(XXFLAGS) -I. -I./$(TARGET_ARCH) -I../libdl -c $< -o $@
$(STRIPTOOL) -x -R .note -R .comment $*.o
$(AOBJS): %.o : %.S
$(CC) $(CFLAGS) -I. -I./$(TARGET_ARCH) -I../libdl -c $< -o $@
$(STRIPTOOL) -x -R .note -R .comment $*.o
ldso.o: ldso.c hash.c readelflib1.c $(TARGET_ARCH)/elfinterp.c \
ld_hash.h ld_string.h ld_syscall.h ldso.h linuxelf.h
clean::
$(RM) -f $(UCLIBC_LDSO)* $(OBJS) $(LDSO_FULLNAME)* core *.o *.a *.s *.i ldso.h *~
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