1 # Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
4 # The GNU C Library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Library General Public License as
6 # published by the Free Software Foundation; either version 2 of the
7 # License, or (at your option) any later version.
9 # The GNU C Library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Library General Public License for more details.
14 # You should have received a copy of the GNU Library General Public
15 # License along with the GNU C Library; see the file COPYING.LIB. If not,
16 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 # Boston, MA 02111-1307, USA.
19 # Makefile for elf subdirectory of GNU C Library.
23 headers = elf.h bits/elfclass.h bits/dlfcn.h link.h dlfcn.h
24 routines = $(dl-routines) dl-open dl-close dl-symbol dl-support \
25 dl-addr enbl-secure dl-profstub dl-origin
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 misc \
32 # But they are absent from the shared libc, because that code is in ld.so.
33 elide-routines.os = $(dl-routines) dl-support enbl-secure
35 # ld.so uses those routines, plus some special stuff for being the program
36 # interpreter and operating independent of libc.
37 rtld-routines := rtld $(dl-routines) dl-sysdep dl-environ dl-minimal
38 distribute = $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \
39 dl-hash.h soinit.c sofini.c ldd.bash.in eval.c \
40 genrtldtbl.awk atomicity.h dl-procinfo.h ldsodefs.h \
41 dl-librecon.h interp.c sln.c dl-origin.h hp-timing.h \
42 testobj1.c testobj2.c testobj3.c testobj4.c testobj5.c \
43 testobj6.c testobj1_1.c failobj.c do-lookup.h
48 extra-libs-others = $(extra-libs)
49 libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr
50 ifeq ($(versioning),yes)
51 libdl-routines += dlopenold
52 libdl-shared-only-routines := dlopenold
55 before-compile = $(objpfx)trusted-dirs.h
57 ifeq ($(versioning),yes)
58 ld-map = $(common-objpfx)ld.so.map
61 ifeq (yes,$(build-shared))
62 extra-objs = $(rtld-routines:=.os) soinit.os sofini.os eval.os interp.os
63 generated = librtld.os dl-allobjs.os ld.so trusted-dirs.h trusted-dirs.st
64 install-others = $(inst_slibdir)/$(rtld-installed-name)
72 install-rootsbin = sln
74 ifeq (yes,$(has-ldconfig))
75 others-static += ldconfig
77 install-rootsbin += ldconfig
80 ifeq (yes,$(build-shared))
81 tests = loadtest restest1 preloadtest loadfail multiload origtest
83 modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
85 extra-objs += $(modules-names:=.os)
87 ifeq ($(build-shared),yes)
88 libdl = $(objpfx)libdl.so$(libdl.so-version)
90 libdl = $(objpfx)libdl.a
96 ifeq (yes,$(build-shared))
97 # Make sure these things are built in the `make lib' pass so they can be used
98 # to run programs during the `make others' pass.
99 lib-noranlib: $(objpfx)$(rtld-installed-name) \
100 $(addprefix $(objpfx),$(extra-objs))
103 # Command to link into a larger single relocatable object.
104 reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@
106 $(objpfx)dl-allobjs.os: $(rtld-routines:%=$(objpfx)%.os)
109 # Link together the dynamic linker into a single relocatable object.
110 $(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
111 $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
113 # Do we need a linker script?
114 rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
116 ifneq (,$(rtld-ldscript-in))
117 rtld-ldscript = $(objpfx)rtld-ldscript
118 generated += rtld-ldscript
120 LDFLAGS-rtld = -T $(rtld-ldscript)
121 before-compile += $(rtld-ldscript)
123 rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
124 include $(rtld-parms)
126 $(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms)
127 sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
128 -e 's#@@rtld-arch@@#$(rtld-arch)#' \
129 -e 's#@@rtld-entry@@#$(rtld-entry)#' \
130 -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
133 $(objpfx)ld.so: $(objpfx)librtld.os $(addprefix $(objpfx),$(rtld-ldscript)) \
135 $(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \
136 $(filter-out $(rtld-ldscript) $(map-file),$^) \
137 $(load-map-file) -Wl,-soname=$(rtld-installed-name)
139 # interp.c exists just to get this string into the libraries.
140 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
142 ifneq (ld.so,$(rtld-installed-name))
143 # Make sure ld.so.1 exists in the build directory so we can link
145 $(objpfx)$(rtld-installed-name): $(objpfx)ld.so
148 generated += $(rtld-installed-name)
151 # Build a file mentioning all trustworthy directories to look for shared
152 # libraries when using LD_LIBRARY_PATH in a setuid program. The user can
153 # add directories to the list by defining $(user-defined-trusted-dirs)
154 # before starting make.
155 $(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @:
156 $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
157 $(make-target-directory)
158 echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))" \
159 | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
160 $(move-if-change) ${@:st=T} ${@:st=h}
162 CPPFLAGS-dl-load.c = -I$(objpfx).
163 CFLAGS-dl-load.c += -Wno-uninitialized
165 # Specify the dependencies of libdl.so; its commands come from the generic
166 # rule to build a shared library.
167 $(objpfx)libdl.so: $(objpfx)libdl_pic.a $(common-objpfx)libc.so $(objpfx)ld.so
169 ifeq (yes,$(build-shared))
170 $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
171 $(do-install-program)
173 $(inst_slibdir)/$(rtld-installed-name): \
174 $(inst_slibdir)/$(rtld-version-installed-name)
177 # Special target called by parent to install just the dynamic linker.
179 ldso_install: $(inst_slibdir)/$(rtld-installed-name)
183 common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
184 -e 's%@VERSION@%$(version)%g'
185 sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g'
186 bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \
187 -e 's%@TEXTDOMAINDIR@%$(localedir)%g'
189 ifneq ($(have-bash2),yes)
195 ifeq ($(ldd-rewrite-script),no)
197 sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new
201 sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new
205 $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
206 $(common-objpfx)config.make
212 $(objpfx)sprof: $(libdl)
214 test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(modules-names)))
215 generated += $(addsuffix .so,$(modules-names))
217 $(objpfx)testobj1.so: $(libdl)
218 $(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl)
219 $(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl)
220 $(objpfx)testobj3.so: $(libdl)
221 $(objpfx)testobj4.so: $(libdl)
222 $(objpfx)testobj5.so: $(libdl)
223 $(objpfx)testobj6.so: $(libdl)
224 $(objpfx)failobj.so: $(objpfx)testobj6.so
226 $(test-modules): $(objpfx)%.so: $(objpfx)%.os
229 $(objpfx)loadtest: $(libdl)
230 LDFLAGS-loadtest = -rdynamic
232 $(objpfx)loadtest.out: $(test-modules)
234 $(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl)
235 LDFLAGS-restest1 = -rdynamic
237 $(objpfx)restest1.out: $(test-modules)
239 preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5
240 $(objpfx)preloadtest: $(objpfx)testobj6.so
241 LDFLAGS-preloadtest = -rdynamic
242 $(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so)
244 LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so)))
246 $(objpfx)loadfail: $(libdl)
247 LDFLAGS-loadfail = -rdynamic
249 $(objpfx)loadfail.out: $(objpfx)failobj.so
251 $(objpfx)multiload: $(libdl)
252 LDFLAGS-multiload = -rdynamic
253 CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
255 $(objpfx)multiload.out: $(objpfx)testobj1.so
257 $(objpfx)origtest: $(libdl)
258 $(objpfx)origtest.out: $(objpfx)testobj1.so
262 LDFLAGS-dl.so = -Wl,-dynamic-linker,$(slibdir)/$(rtld-installed-name)
263 $(objpfx)libdl.so: $(objpfx)eval.os