elf/Makefile

   1 # Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   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.
   8
   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.
  13
  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.
  18
  19 # Makefile for elf subdirectory of GNU C Library.
  20
  21 subdir          := elf
  22
  23 headers         = elf.h bits/elfclass.h link.h
  24 routines        = $(dl-routines) dl-open dl-close dl-symbol dl-support \
  25                   dl-addr enbl-secure dl-profstub dl-origin dl-libc dl-sym
  26
  27 # The core dynamic linking functions are in libc for the static and
  28 # profiled libraries.
  29 dl-routines     = $(addprefix dl-,load cache lookup object reloc deps \
  30                                   runtime error init fini debug misc \
  31                                   version profile)
  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
  34
  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-cache.h dl-hash.h soinit.c sofini.c ldd.bash.in \
  40                    genrtldtbl.awk atomicity.h dl-procinfo.h ldsodefs.h \
  41                    dl-librecon.h interp.c sln.c dl-dst.h hp-timing.h \
  42                    do-lookup.h dl-lookupcfg.h sprof.c gen-trusted-dirs.awk \
  43                    testobj1.c testobj2.c testobj3.c testobj4.c testobj5.c \
  44                    testobj6.c testobj1_1.c failobj.c \
  45                    ldconfig.h ldconfig.c cache.c readlib.c readelflib.c \
  46                    dep1.c dep2.c dep3.c dep4.c dl-dtprocnum.h \
  47                    vismain.c vismod1.c vismod2.c vismod3.c \
  48                    constload2.c constload3.c
  49
  50 include ../Makeconfig
  51
  52 before-compile = $(objpfx)trusted-dirs.h
  53
  54 ifeq ($(versioning),yes)
  55 ld-map          = $(common-objpfx)ld.map
  56 endif
  57
  58 ifeq (yes,$(build-shared))
  59 extra-objs      = $(rtld-routines:=.os) soinit.os sofini.os interp.os
  60 generated       = librtld.os dl-allobjs.os ld.so trusted-dirs.h trusted-dirs.st
  61 install-others  = $(inst_slibdir)/$(rtld-installed-name)
  62 install-bin     = ldd
  63 generated      += ldd
  64 endif
  65
  66 others          = sprof sln
  67 install-bin     += sprof
  68 others-static   = sln
  69 install-rootsbin = sln
  70
  71 ifeq (yes,$(use-ldconfig))
  72 ifeq (yes,$(build-shared))
  73 others-static   += ldconfig
  74 others          += ldconfig
  75 install-rootsbin += ldconfig
  76
  77 ldconfig-modules := cache readlib xmalloc xstrdup
  78 extra-objs      += $(ldconfig-modules:=.o)
  79
  80 # To find xmalloc.c and xstrdup.c
  81 vpath %.c ../locale/programs
  82
  83 endif
  84 endif
  85
  86 ifeq (yes,$(build-shared))
  87 tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
  88         constload1 order $(tests-vis-$(have-protected))
  89 tests-vis-yes = vismain
  90 endif
  91 modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
  92                 testobj1_1 failobj constload2 constload3 \
  93                 dep1 dep2 dep3 dep4 $(modules-vis-$(have-protected))
  94 modules-vis-yes = vismod1 vismod2 vismod3
  95 extra-objs += $(addsuffix .os,$(strip $(modules-names)))
  96
  97 include ../Rules
  98
  99 ifeq (yes,$(build-shared))
 100 # Make sure these things are built in the `make lib' pass so they can be used
 101 # to run programs during the `make others' pass.
 102 lib-noranlib: $(objpfx)$(rtld-installed-name) \
 103               $(addprefix $(objpfx),$(extra-objs))
 104 endif
 105
 106 # Command to link into a larger single relocatable object.
 107 reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@
 108
 109 $(objpfx)dl-allobjs.os: $(rtld-routines:%=$(objpfx)%.os)
 110         $(reloc-link) $^
 111
 112 # Link together the dynamic linker into a single relocatable object.
 113 $(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
 114         $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
 115
 116 # Do we need a linker script?
 117 rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
 118
 119 ifneq (,$(rtld-ldscript-in))
 120 rtld-ldscript = $(objpfx)rtld-ldscript
 121 generated += rtld-ldscript
 122
 123 LDFLAGS-rtld = -T $(rtld-ldscript)
 124 before-compile += $(rtld-ldscript)
 125
 126 rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
 127 include $(rtld-parms)
 128
 129 $(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms)
 130         sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
 131             -e 's#@@rtld-arch@@#$(rtld-arch)#' \
 132             -e 's#@@rtld-entry@@#$(rtld-entry)#' \
 133             -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
 134 endif
 135
 136 $(objpfx)ld.so: $(objpfx)librtld.os $(rtld-ldscript) $(ld-map)
 137         $(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \
 138                   $(filter-out $(rtld-ldscript) $(map-file),$^)         \
 139                   $(load-map-file) -Wl,-soname=$(rtld-installed-name)
 140
 141 # interp.c exists just to get this string into the libraries.
 142 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
 143
 144 ifneq (ld.so,$(rtld-installed-name))
 145 # Make sure ld.so.1 exists in the build directory so we can link
 146 # against it.
 147 $(objpfx)$(rtld-installed-name): $(objpfx)ld.so
 148         rm -f $@
 149         ln -s $(<F) $@
 150 generated += $(rtld-installed-name)
 151 endif
 152
 153 # Build a file mentioning all trustworthy directories to look for shared
 154 # libraries when using LD_LIBRARY_PATH in a setuid program.  The user can
 155 # add directories to the list by defining $(user-defined-trusted-dirs)
 156 # before starting make.
 157 $(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @:
 158 $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
 159         $(make-target-directory)
 160         echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))"    \
 161         | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
 162         $(move-if-change) ${@:st=T} ${@:st=h}
 163         touch $@
 164 CPPFLAGS-dl-load.c = -I$(objpfx).
 165
 166 ifeq (yes,$(build-shared))
 167 $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 168         $(make-target-directory)
 169         $(INSTALL_PROGRAM) $< $@.new
 170
 171 $(inst_slibdir)/$(rtld-installed-name): \
 172   $(inst_slibdir)/$(rtld-version-installed-name) \
 173   $(inst_slibdir)/libc-$(version).so
 174         rm -f $@ $<
 175         $(symbolic-link-prog) $<.new $@
 176         ln $<.new $<
 177         rm -f $@
 178         $(symbolic-link-prog) $(<F) $@
 179         rm -f $<.new
 180
 181 # Special target called by parent to install just the dynamic linker.
 182 .PHONY: ldso_install
 183 ldso_install: $(inst_slibdir)/$(rtld-installed-name)
 184 endif
 185
 186
 187 common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
 188                      -e 's%@VERSION@%$(version)%g'
 189 sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g'
 190 bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \
 191                    -e 's%@TEXTDOMAINDIR@%$(msgcatdir)%g'
 192
 193 ifneq ($(have-bash2),yes)
 194 ldd-shell = sh
 195 else
 196 ldd-shell = bash
 197 endif
 198
 199 ifeq ($(ldd-rewrite-script),no)
 200 define gen-ldd
 201 sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new
 202 endef
 203 else
 204 define gen-ldd
 205 sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new
 206 endef
 207 endif
 208
 209 $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
 210               $(common-objpfx)config.make
 211         $(gen-ldd)
 212         chmod 555 $@.new
 213         mv -f $@.new $@
 214
 215 $(objpfx)sprof: $(libdl)
 216
 217 $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
 218
 219 test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names))))
 220 generated += $(addsuffix .so,$(strip $(modules-names)))
 221
 222 $(objpfx)testobj1.so: $(libdl)
 223 $(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl)
 224 $(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl)
 225 $(objpfx)testobj3.so: $(libdl)
 226 $(objpfx)testobj4.so: $(libdl)
 227 $(objpfx)testobj5.so: $(libdl)
 228 $(objpfx)testobj6.so: $(libdl)
 229 $(objpfx)failobj.so: $(objpfx)testobj6.so
 230 $(objpfx)dep1.so: $(objpfx)dep2.so $(objpfx)dep4.so
 231 $(objpfx)dep2.so: $(objpfx)dep3.so $(objpfx)dep4.so
 232 $(objpfx)dep4.so: $(objpfx)dep3.so
 233
 234 $(test-modules): $(objpfx)%.so: $(objpfx)%.os
 235         $(build-module)
 236
 237 $(objpfx)loadtest: $(libdl)
 238 LDFLAGS-loadtest = -rdynamic
 239
 240 $(objpfx)loadtest.out: $(test-modules)
 241
 242 $(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl)
 243 LDFLAGS-restest1 = -rdynamic
 244
 245 $(objpfx)restest1.out: $(test-modules)
 246
 247 preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5
 248 $(objpfx)preloadtest: $(objpfx)testobj6.so
 249 LDFLAGS-preloadtest = -rdynamic
 250 $(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so)
 251 preloadtest-ENV = \
 252   LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so)))
 253
 254 $(objpfx)loadfail: $(libdl)
 255 LDFLAGS-loadfail = -rdynamic
 256
 257 $(objpfx)loadfail.out: $(objpfx)failobj.so
 258
 259 $(objpfx)multiload: $(libdl)
 260 LDFLAGS-multiload = -rdynamic
 261 CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
 262
 263 $(objpfx)multiload.out: $(objpfx)testobj1.so
 264
 265 $(objpfx)origtest: $(libdl)
 266 $(objpfx)origtest.out: $(objpfx)testobj1.so
 267
 268 ifeq ($(have-thread-library),yes)
 269 $(objpfx)resolvfail: $(libdl) $(shared-thread-library)
 270 else
 271 $(objpfx)resolvfail: $(libdl)
 272 endif
 273
 274 $(objpfx)constload1: $(libdl)
 275 $(objpfx)constload1.out: $(objpfx)constload2.so $(objpfx)constload3.so
 276
 277 $(objpfx)order: $(addprefix $(objpfx),dep4.so dep3.so dep2.so dep1.so)
 278
 279 $(objpfx)order.out: $(objpfx)order
 280         $(elf-objpfx)$(rtld-installed-name) \
 281           --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
 282           $(objpfx)order > $@
 283         (echo "0123456789" | cmp $@ -) > /dev/null
 284
 285 $(objpfx)vismain: $(addprefix $(objpfx),vismod1.so vismod2.so)
 286 $(objpfx)vismain.out: $(addprefix $(objpfx),vismod3.so)
 287 vismain-ENV = LD_PRELOAD=$(addprefix $(objpfx),vismod3.so)