3 # Copyright (C) 2000 by Lineo, inc.
4 # Copyright (C) 2000-2002 Erik Andersen <andersen@uclibc.org>
6 # This program is free software; you can redistribute it and/or modify it under
7 # the terms of the GNU Library General Public License as published by the Free
8 # Software Foundation; either version 2 of the License, or (at your option) any
11 # This program is distributed in the hope that it will be useful, but WITHOUT
12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 # FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
16 # You should have received a copy of the GNU Library General Public License
17 # along with this program; if not, write to the Free Software Foundation, Inc.,
18 # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 # Derived in part from the Linux-8086 C library, the GNU C Library, and several
21 # other sundry sources. Files within this library are copyright by their
22 # respective copyright holders.
26 include $(TOPDIR)Rules.mak
27 LDSO_FULLNAME=ld-uClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
29 # Enable this to enable all the code needed to support traditional ldd
30 # (i.e. where the shared library loader does all the heavy lifting)
31 # Since this currently only saves about 300 bytes, I'm going to leave
35 # Enable this to enable all the code needed for debugging the runtime
36 # linking of an application using the LD_DEBUG environment variable:
37 # LD_DEBUG=token1,token2,.. prog
38 # enables diagnostics to the stderr.
39 # For now there are these tokens possible:
40 # bindings displays the resolve processing (function calls); detail shows the relocation patch
41 # detail provide more information for some options
42 # move display copy processings
43 # reloc display relocation processing; detail shows the relocation patch
44 # symbols display symbol table processing
46 # The additional environment variable:
47 # LD_DEBUG_OUTPUT=file
48 # redirects the diagnostics to an output file created using
49 # the specified name and the process id as a suffix.
52 # $ LD_DEBUG=binding,move,symbols,reloc,detail LD_DEBUG_OUTPUT=appname ./appname
54 #XXFLAGS+= -DSUPPORT_LD_DEBUG
56 # Enable this for the very very early debugging. Really only useful
57 # for people porting to new architectures.
60 # Enable this to never actually fixup symbols...
61 #XXFLAGS+= -DLD_NEVER_FIXUP_SYMBOLS
63 XXFLAGS+=-DUCLIBC_TARGET_PREFIX=\"$(TARGET_PREFIX)\" \
64 -DUCLIBC_DEVEL_PREFIX=\"$(DEVEL_PREFIX)\" \
65 -DUCLIBC_BUILD_DIR=\"$(shell cd $(TOPDIR) && pwd)\"
66 LDFLAGS=-shared --warn-common --export-dynamic --sort-common \
67 -z combreloc --discard-locals --discard-all
68 CSRC= ldso.c #hash.c readelflib1.c $(TARGET_ARCH)/elfinterp.c
69 COBJS=$(patsubst %.c,%.o, $(CSRC))
70 ASRC=$(shell ls $(TARGET_ARCH)/*.S)
71 AOBJS=$(patsubst %.S,%.o, $(ASRC))
72 OBJS=$(AOBJS) $(COBJS)
74 ifeq ($(strip $(TARGET_ARCH)),cris)
78 ifneq ($(strip $(DODEBUG)),true)
84 lib:: ldso.h $(OBJS) $(DLINK_OBJS)
85 $(LD) $(LDFLAGS) -e _dl_boot -soname=$(UCLIBC_LDSO) \
86 -o $(LDSO_FULLNAME) $(OBJS) $(LIBGCC);
87 install -d $(TOPDIR)lib
88 install -m 755 $(LDSO_FULLNAME) $(TOPDIR)lib
89 (cd $(TOPDIR)lib && ln -sf $(LDSO_FULLNAME) $(UCLIBC_LDSO))
92 echo "const char *_dl_progname=\""$(UCLIBC_LDSO)"\";" > ldso.h
93 echo "#include \"$(TARGET_ARCH)/elfinterp.c\"" >> ldso.h
97 $(CC) $(CFLAGS) $(XXFLAGS) -I. -I./$(TARGET_ARCH) -I../libdl -c $< -o $@
98 $(STRIPTOOL) -x -R .note -R .comment $*.o
101 $(CC) $(CFLAGS) -I. -I./$(TARGET_ARCH) -I../libdl -c $< -o $@
102 $(STRIPTOOL) -x -R .note -R .comment $*.o
104 ldso.o: ldso.c hash.c readelflib1.c $(TARGET_ARCH)/elfinterp.c \
105 ld_hash.h ld_string.h ld_syscall.h ldso.h linuxelf.h
108 $(RM) -f $(UCLIBC_LDSO)* $(OBJS) $(LDSO_FULLNAME)* core *.o *.a *.s *.i ldso.h *~