1 # Makefile for elf subdirectory of GNU C Library.
3 # Copyright (C) 1995, 1996, 1997 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 not,
18 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 # Boston, MA 02111-1307, USA.
23 headers
= elf.h elfclass.h link.h dlfcn.h
24 routines
= $(dl-routines
) dl-open dl-close dl-symbol dl-support \
27 # The core dynamic linking functions are in libc for the static and
29 dl-routines
= $(addprefix dl-
,load cache lookup object reloc deps \
30 runtime error init fini debug
)
31 # But they are absent from the shared libc, because that code is in ld.so.
32 elide-routines.so
= $(dl-routines
) dl-support enbl-secure
34 # ld.so uses those routines, plus some special stuff for being the program
35 # interpreter and operating independent of libc.
36 rtld-routines
:= rtld
$(dl-routines
) dl-sysdep dl-minimal
37 distribute
= $(rtld-routines
:=.c
) dynamic-link.h do-rel.h dl-machine.h \
38 soinit.c sofini.c ldd.sh.in ldd.bash.in eval.c
41 extra-libs-others
= $(extra-libs
)
42 libdl-routines
:= dlopen dlclose dlsym dlerror dladdr
44 before-compile
= $(objpfx
)trusted-dirs.h
47 all: # Make this the default target; it will be defined in Rules.
51 ifeq (yes
,$(build-shared
))
52 extra-objs
= $(rtld-routines
:=.so
) soinit.so sofini.so eval.so
53 generated
= librtld.so dl-allobjs.so
54 install-others
= $(slibdir
)/$(rtld-installed-name
)
61 ifeq (yes
, $(build-shared
))
62 # Make sure these things are built in the `make lib' pass so they can be used
63 # to run programs during the `make others' pass.
64 lib-noranlib
: $(objpfx
)$(rtld-installed-name
) \
65 $(addprefix $(objpfx
),$(extra-objs
))
68 # Command to link into a larger single relocatable object.
69 reloc-link
= $(LINK.o
) -nostdlib
-nostartfiles
-r
-o
$@
71 $(objpfx
)dl-allobjs.so
: $(rtld-routines
:%=$(objpfx
)%.so
)
74 # Link together the dynamic linker into a single relocatable object.
75 $(objpfx
)librtld.so
: $(objpfx
)dl-allobjs.so
$(common-objpfx
)libc_pic.a
76 $(reloc-link
) '-Wl,-(' $^
-lgcc
'-Wl,-)'
78 $(objpfx
)ld.so
: $(objpfx
)librtld.so
79 $(rtld-link
) -Wl
,-soname
=$(rtld-installed-name
)
82 $(LINK.o
) -nostdlib
-nostartfiles
-shared
-o
$@ \
83 -Wl
,-rpath
=$(default-rpath
) $^
86 # The dl code in the static libc needs a default library path.
87 CFLAGS-dl-support.c
= -D
'DEFAULT_RPATH="$(default-rpath)"'
89 ifneq (ld.so
, $(rtld-installed-name
))
90 # Make sure ld.so.1 exists in the build directory so we can link
92 $(objpfx
)$(rtld-installed-name
): $(objpfx
)ld.so
97 # Build a file mentioning all trustworthy directories to look for shared
98 # libraries when using LD_LIBRARY_PATH in a setuid program. The user can
99 # add directories to the list by defining $(user-defined-trusted-dirs)
100 # before starting make.
101 $(objpfx
)trusted-dirs.h
: Makefile
102 (for
dir in
`echo "$(default-rpath) $(user-defined-trusted-dirs)" | \
104 echo
" \"$$dir\","; \
107 CFLAGS-dl-load.c
= -I
$(objdir
)/$(subdir
)
109 # Specify the dependencies of libdl.so; its commands come from the generic
110 # rule to build a shared library.
111 $(objpfx
)libdl.so
: $(objpfx
)libdl_pic.a
$(common-objpfx
)libc.so
$(objpfx
)ld.so
113 $(slibdir
)/$(rtld-installed-name
): $(objpfx
)ld.so
; $(do-install-program
)
115 ifneq ($(have-bash2
),yes
)
116 $(objpfx
)ldd
: ldd.sh.in
$(common-objpfx
)version.mk \
117 $(common-objpfx
)soversions.mk
$(common-objpfx
)config.make
118 sed
-e
's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
119 -e
's%@VERSION@%$(version)%g' < $< > $@.new
123 $(objpfx
)ldd
: ldd.bash.in
$(common-objpfx
)version.mk \
124 $(common-objpfx
)soversions.mk
$(common-objpfx
)config.make
125 sed
-e
's%@BASH@%$(BASH)%g' \
126 -e
's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
127 -e
's%@VERSION@%$(version)%g' \
128 -e
's%@TEXTDOMAINDIR@%$(localedir)%g' < $< > $@.new
135 LDFLAGS-dl.so
= -Wl
,-dynamic-linker
,$(slibdir
)/$(rtld-installed-name
)
136 $(objpfx
)libdl.so
: $(objpfx
)eval.so