1 # Makefile for elf subdirectory of GNU C Library.
3 # Copyright (C) 1995, 1996 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 dl-allobjs.so
43 install-others
= $(slibdir
)/$(rtld-installed-name
)
46 # Make sure this is built in the `make lib' pass so it can be used
47 # to run programs during the `make others' pass.
48 subdir_lib
: $(objpfx
)ld.so
50 ifneq (,$(filter linux
%,$(config-os
)))
51 extra-objs
+= linux-compat.so
52 install-others
+= $(slibdir
)/ld-linux.so
.1
53 subdir_lib
: $(objpfx
)ld-linux.so
.1
60 # Command to link into a larger single relocatable object.
61 reloc-link
= $(LINK.o
) -nostdlib
-nostartfiles
-r
-o
$@
63 $(objpfx
)dl-allobjs.so
: $(rtld-routines
:%=$(objpfx
)%.so
)
66 # Link together the dynamic linker into a single relocatable object.
67 # We use this to produce both the ABI-compliant and Linux-compatible
68 # dynamic linker shared objects below.
69 $(objpfx
)librtld.so
: $(objpfx
)dl-allobjs.so \
70 $(patsubst %,$(common-objpfx
)lib
%_pic.a
,\
71 elf c
$(LDLIBS-c.so
:-l
%=%))
72 $(reloc-link
) '-Wl,-(' $^
-lgcc
'-Wl,-)'
74 $(objpfx
)ld.so
: $(objpfx
)librtld.so
75 $(rtld-link
) -Wl
,-soname
=$(rtld-installed-name
)
76 $(objpfx
)ld-linux.so
.1: $(objpfx
)librtld.so
77 $(rtld-link
) -Wl
,-soname
=ld-linux.so
.1
80 $(LINK.o
) -nostdlib
-nostartfiles
-shared
-o
$@ \
81 -Wl
,-rpath
=$(default-rpath
) $^
84 # The Linux-compatible dynamic linker shared object is just the same
85 # with one object file of compatibility initialization code added.
86 $(objpfx
)ld-linux.so
.1: $(objpfx
)linux-compat.so
89 $(objpfx
)libdl.so
: $(objpfx
)libdl_pic.a
$(common-objpfx
)libc.so
$(objpfx
)ld.so
90 $(patsubst %/,cd
%;,$(objpfx
)) \
91 $(LINK.o
) -shared
-o
$(@
:$(objpfx
)%=%) \
92 $(LDFLAGS.so
) $(LDFLAGS-dl.so
) \
93 -Wl
,--whole-archive
$(^
:$(objpfx
)%=%) $(no-whole-archive
)
95 $(slibdir
)/$(rtld-installed-name
): $(objpfx
)ld.so
; $(do-install-program
)
96 $(slibdir
)/ld-linux.so
.1: $(objpfx
)ld-linux.so
.1; $(do-install-program
)
98 $(objpfx
)ldd
: ldd.sh.in Makefile
99 sed
's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' < $< > $@.new