1 # Makefile for elf subdirectory of GNU C Library.
3 # Copyright (C) 1995 Free Software Foundation, Inc.
4 # This file is part of the GNU C Library.
6 # The GNU C Library is free software; you can redistribute it and/or
7 # modify it under the terms of the GNU Library General Public License as
8 # published by the Free Software Foundation; either version 2 of the
9 # License, or (at your option) any later version.
11 # The GNU C Library is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # Library General Public License for more details.
16 # You should have received a copy of the GNU Library General Public
17 # License along with the GNU C Library; see the file COPYING.LIB. If
18 # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
19 # Cambridge, MA 02139, USA.
23 headers := elf.h libelf.h link.h dlfcn.h
24 routines := init-first
26 extra-libs = libelf libdl
27 libelf-routines := elf_hash
28 libdl-routines := dlopen dlclose dlsym dlerror
29 libdl-inhibit-o = $(filter-out .so,$(object-suffixes)) # Build only shared.
31 rtld-routines := rtld $(addprefix dl-,minimal load lookup object reloc \
32 runtime sysdep error init fini)
33 distribute = $(rtld-routines:=.c) dynamic-link.h do-rel.h \
34 soinit.c sofini.c ldd.sh.in linux-compat.c
36 all: # Make this the default target; it will be defined in Rules.
40 ifeq (yes,$(build-shared))
41 extra-objs = $(rtld-routines:=.so) soinit.so sofini.so
42 generated = librtld.so
43 install-others = $(slibdir)/$(rtld-installed-name)
46 ifneq (,$(filter linux%,$(config-os)))
47 extra-objs += linux-compat.so
48 install-others += $(slibdir)/ld-linux.so.1
55 # Link together the dynamic linker into a single relocatable object.
56 # We use this to produce both the ABI-compliant and Linux-compatible
57 # dynamic linker shared objects below.
58 $(objpfx)librtld.so: $(rtld-routines:%=$(objpfx)%.so) \
59 $(patsubst %,$(common-objpfx)lib%_pic.a,\
60 elf c $(LDLIBS-c.so:-l%=%))
61 $(LINK.o) -nostdlib -nostartfiles -r -o $@ \
62 '-Wl,-(' $^ -lgcc '-Wl,-)'
64 $(objpfx)ld.so: $(objpfx)librtld.so
65 $(rtld-link) -Wl,-soname=$(rtld-installed-name)
66 $(objpfx)ld-linux.so.1: $(objpfx)librtld.so
67 $(rtld-link) -Wl,-soname=ld-linux.so.1
70 $(LINK.o) -nostdlib -nostartfiles -shared -o $@ \
71 -Wl,-rpath=$(default-rpath) $^
74 # The Linux-compatible dynamic linker shared object is just the same
75 # with one object file of compatibility initialization code added.
76 $(objpfx)ld-linux.so.1: $(objpfx)linux-compat.so
79 $(objpfx)libdl.so: $(objpfx)libdl_pic.a $(common-objpfx)libc.so $(objpfx)ld.so
80 $(patsubst %/,cd %;,$(objpfx)) \
81 $(LINK.o) -shared -o $(@:$(objpfx)%=%) \
82 $(LDFLAGS.so) $(LDFLAGS-dl.so) \
83 -Wl,--whole-archive $(^:$(objpfx)%=%)
85 $(slibdir)/$(rtld-installed-name): $(objpfx)ld.so; $(do-install-program)
86 $(slibdir)/ld-linux.so.1: $(objpfx)ld-linux.so.1; $(do-install-program)
88 $(objpfx)ldd: ldd.sh.in
89 sed 's%@RTLD@%$(libdir)/$(rtld-installed-name)%g' < $< > $@.new