elf/Makefile

   1 # Copyright (C) 1995-1999, 2000, 2001 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-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 all-dl-routines = $(dl-routines) $(sysdep-dl-routines)
  33 # But they are absent from the shared libc, because that code is in ld.so.
  34 elide-routines.os = $(all-dl-routines) dl-support enbl-secure
  35
  36 # ld.so uses those routines, plus some special stuff for being the program
  37 # interpreter and operating independent of libc.
  38 rtld-routines   := rtld $(dl-routines) dl-sysdep dl-environ dl-minimal
  39 all-rtld-routines = $(rtld-routines) $(sysdep-rtld-routines)
  40
  41 distribute      := $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \
  42                    dl-cache.h dl-hash.h soinit.c sofini.c ldd.bash.in \
  43                    genrtldtbl.awk atomicity.h dl-procinfo.h ldsodefs.h \
  44                    dl-librecon.h interp.c sln.c dl-dst.h hp-timing.h \
  45                    do-lookup.h dl-lookupcfg.h sprof.c gen-trusted-dirs.awk \
  46                    testobj1.c testobj2.c testobj3.c testobj4.c testobj5.c \
  47                    testobj6.c testobj1_1.c failobj.c unloadmod.c \
  48                    ldconfig.h ldconfig.c cache.c readlib.c readelflib.c \
  49                    chroot_canon.c gccframe.h \
  50                    dep1.c dep2.c dep3.c dep4.c dl-dtprocnum.h unsecvars.h \
  51                    vismain.c vismod1.c vismod2.c vismod3.c \
  52                    constload2.c constload3.c filtmod1.c filtmod2.c \
  53                    nodlopenmod.c nodelete.c nodelmod1.c nodelmod2.c \
  54                    nodelmod3.c nodelmod4.c nodlopen.c dl-osinfo.h \
  55                    reldepmod1.c reldepmod2.c reldepmod3.c reldepmod4.c \
  56                    reldep4mod1.c reldep4mod2.c reldep4mod3.c reldep4mod4.c \
  57                    nextmod1.c nextmod2.c pathoptobj.c tst-pathopt.sh \
  58                    neededobj1.c neededobj2.c neededobj3.c neededobj4.c \
  59                    neededobj5.c neededobj6.c firstobj.c \
  60                    unload2mod.c unload2dep.c ltglobmod1.c ltglobmod2.c \
  61                    testobj.h vismod.h globalmod1.c
  62
  63 include ../Makeconfig
  64
  65 before-compile  = $(objpfx)trusted-dirs.h
  66 generated       := trusted-dirs.h trusted-dirs.st for-renamed/renamed.so
  67 generated-dirs  := for-renamed
  68
  69 ifeq ($(versioning),yes)
  70 ld-map          = $(common-objpfx)ld.map
  71 endif
  72
  73 ifeq (yes,$(build-shared))
  74 extra-objs      = $(all-rtld-routines:%=%.os) soinit.os sofini.os interp.os
  75 generated       += librtld.os dl-allobjs.os ld.so ldd
  76 install-others  = $(inst_slibdir)/$(rtld-installed-name)
  77 install-bin     = ldd
  78 endif
  79
  80 others          = sprof sln
  81 install-bin     += sprof
  82 others-static   = sln
  83 install-rootsbin = sln
  84
  85 ifeq (yes,$(use-ldconfig))
  86 ifeq (yes,$(build-shared))
  87 others-static   += ldconfig
  88 others          += ldconfig
  89 install-rootsbin += ldconfig
  90
  91 ldconfig-modules := cache readlib xmalloc xstrdup chroot_canon
  92 extra-objs      += $(ldconfig-modules:=.o)
  93
  94 # To find xmalloc.c and xstrdup.c
  95 vpath %.c ../locale/programs
  96
  97 endif
  98 endif
  99
 100 ifeq (yes,$(build-shared))
 101 tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
 102         constload1 order $(tests-vis-$(have-protected)) noload filter unload \
 103         reldep reldep2 reldep3 reldep4 next $(tests-nodelete-$(have-z-nodelete)) \
 104         $(tests-nodlopen-$(have-z-nodlopen)) neededtest neededtest2 \
 105         neededtest3 neededtest4 unload2 lateglobal initfirst global \
 106         restest2
 107 test-srcs = tst-pathopt
 108 tests-vis-yes = vismain
 109 tests-nodelete-yes = nodelete
 110 tests-nodlopen-yes = nodlopen
 111 endif
 112 modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
 113                 testobj1_1 failobj constload2 constload3 unloadmod \
 114                 dep1 dep2 dep3 dep4 $(modules-vis-$(have-protected)) \
 115                 $(modules-nodelete-$(have-z-nodelete)) \
 116                 $(modules-nodlopen-$(have-z-nodlopen)) filtmod1 filtmod2 \
 117                 reldepmod1 reldepmod2 reldepmod3 reldepmod4 nextmod1 nextmod2 \
 118                 reldep4mod1 reldep4mod2 reldep4mod3 reldep4mod4 \
 119                 neededobj1 neededobj2 neededobj3 neededobj4 \
 120                 neededobj5 neededobj6 firstobj globalmod1 \
 121                 unload2mod unload2dep ltglobmod1 ltglobmod2 pathoptobj
 122 modules-vis-yes = vismod1 vismod2 vismod3
 123 modules-nodelete-yes = nodelmod1 nodelmod2 nodelmod3 nodelmod4
 124 modules-nodlopen-yes = nodlopenmod
 125 extra-objs += $(addsuffix .os,$(strip $(modules-names)))
 126
 127 include ../Rules
 128
 129 ifeq (yes,$(build-shared))
 130 # Make sure these things are built in the `make lib' pass so they can be used
 131 # to run programs during the `make others' pass.
 132 lib-noranlib: $(objpfx)$(rtld-installed-name) \
 133               $(addprefix $(objpfx),$(extra-objs))
 134 endif
 135
 136 # Command to link into a larger single relocatable object.
 137 reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@
 138
 139 $(objpfx)dl-allobjs.os: $(all-rtld-routines:%=$(objpfx)%.os)
 140         $(reloc-link) $^
 141
 142 # Link together the dynamic linker into a single relocatable object.
 143 $(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
 144         $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
 145
 146 # Do we need a linker script?
 147 rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
 148
 149 ifneq (,$(rtld-ldscript-in))
 150 rtld-ldscript = $(objpfx)rtld-ldscript
 151 generated += rtld-ldscript
 152
 153 LDFLAGS-rtld = -T $(rtld-ldscript)
 154 before-compile += $(rtld-ldscript)
 155
 156 rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
 157 include $(rtld-parms)
 158
 159 $(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms)
 160         sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
 161             -e 's#@@rtld-arch@@#$(rtld-arch)#' \
 162             -e 's#@@rtld-entry@@#$(rtld-entry)#' \
 163             -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
 164 endif
 165
 166 $(objpfx)ld.so: $(objpfx)librtld.os $(rtld-ldscript) $(ld-map)
 167         $(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \
 168                   $(filter-out $(rtld-ldscript) $(map-file),$^)         \
 169                   $(load-map-file) -Wl,-soname=$(rtld-installed-name)
 170
 171 # interp.c exists just to get this string into the libraries.
 172 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
 173
 174 ifneq (ld.so,$(rtld-installed-name))
 175 # Make sure ld.so.1 exists in the build directory so we can link
 176 # against it.
 177 $(objpfx)$(rtld-installed-name): $(objpfx)ld.so
 178         rm -f $@
 179         ln -s $(<F) $@
 180 generated += $(rtld-installed-name)
 181 endif
 182
 183 # Build a file mentioning all trustworthy directories to look for shared
 184 # libraries when using LD_LIBRARY_PATH in a setuid program.  The user can
 185 # add directories to the list by defining $(user-defined-trusted-dirs)
 186 # before starting make.
 187 $(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @:
 188 $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
 189         $(make-target-directory)
 190         echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))"    \
 191         | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
 192         $(move-if-change) ${@:st=T} ${@:st=h}
 193         touch $@
 194 CPPFLAGS-dl-load.c = -I$(objpfx). -I$(csu-objpfx).
 195
 196 ifeq (yes,$(build-shared))
 197 $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 198         $(make-target-directory)
 199         $(do-install-program)
 200
 201 $(inst_slibdir)/$(rtld-installed-name): \
 202   $(inst_slibdir)/$(rtld-version-installed-name) \
 203   $(inst_slibdir)/libc-$(version).so
 204         $(make-shlib-link)
 205
 206 # Special target called by parent to install just the dynamic linker.
 207 .PHONY: ldso_install
 208 ldso_install: $(inst_slibdir)/$(rtld-installed-name)
 209 endif
 210
 211
 212 common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
 213                      -e 's%@VERSION@%$(version)%g'
 214 sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g'
 215 bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \
 216                    -e 's%@TEXTDOMAINDIR@%$(msgcatdir)%g'
 217
 218 ifneq ($(have-bash2),yes)
 219 ldd-shell = sh
 220 else
 221 ldd-shell = bash
 222 endif
 223
 224 ifeq ($(ldd-rewrite-script),no)
 225 define gen-ldd
 226 sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new
 227 endef
 228 else
 229 define gen-ldd
 230 sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new
 231 endef
 232 endif
 233
 234 $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
 235               $(common-objpfx)config.make
 236         $(gen-ldd)
 237         chmod 555 $@.new
 238         mv -f $@.new $@
 239
 240 $(objpfx)sprof: $(libdl)
 241
 242 $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
 243 SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
 244 CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' -D'SLIBDIR="$(slibdir)"'
 245 CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
 246 CFLAGS-cache.c = $(SYSCONF-FLAGS)
 247
 248 test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names))))
 249 generated += $(addsuffix .so,$(strip $(modules-names)))
 250
 251 ifeq (yes,$(build-shared))
 252 ifeq ($(cross-compiling),no)
 253 tests: $(objpfx)tst-pathopt.out
 254 endif
 255 endif
 256
 257 $(objpfx)testobj1.so: $(libdl)
 258 $(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl)
 259 $(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl)
 260 $(objpfx)testobj3.so: $(libdl)
 261 $(objpfx)testobj4.so: $(libdl)
 262 $(objpfx)testobj5.so: $(libdl)
 263 $(objpfx)testobj6.so: $(objpfx)testobj1.so $(objpfx)testobj2.so $(libdl)
 264 $(objpfx)failobj.so: $(objpfx)testobj6.so
 265 $(objpfx)dep1.so: $(objpfx)dep2.so $(objpfx)dep4.so
 266 $(objpfx)dep2.so: $(objpfx)dep3.so $(objpfx)dep4.so
 267 $(objpfx)dep4.so: $(objpfx)dep3.so
 268 $(objpfx)nodelmod3.so: $(objpfx)nodelmod4.so
 269 $(objpfx)nextmod1.so: $(libdl)
 270 $(objpfx)neededobj1.so: $(libdl)
 271 $(objpfx)neededobj2.so: $(objpfx)neededobj1.so $(libdl)
 272 $(objpfx)neededobj3.so: $(objpfx)neededobj1.so $(objpfx)neededobj2.so $(libdl)
 273 $(objpfx)neededobj4.so: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 274                         $(objpfx)neededobj3.so $(libdl)
 275 $(objpfx)neededobj6.so: $(objpfx)neededobj5.so
 276 $(objpfx)unload2mod.so: $(objpfx)unload2dep.so
 277 $(objpfx)ltglobmod2.so: $(libdl)
 278 $(objpfx)firstobj.so: $(shared-thread-library)
 279 $(objpfx)globalmod1.so: $(libdl)
 280 $(objpfx)reldep4mod1.so: $(objpfx)reldep4mod3.so
 281 $(objpfx)reldep4mod2.so: $(objpfx)reldep4mod4.so
 282
 283 # filtmod1.so has a special rule
 284 $(filter-out $(objpfx)filtmod1.so, $(test-modules)): $(objpfx)%.so: $(objpfx)%.os
 285         $(build-module)
 286
 287 $(objpfx)loadtest: $(libdl)
 288 LDFLAGS-loadtest = -rdynamic
 289
 290 $(objpfx)loadtest.out: $(test-modules)
 291
 292 $(objpfx)neededtest: $(libdl)
 293 $(objpfx)neededtest.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 294                          $(objpfx)neededobj3.so
 295
 296 $(objpfx)neededtest2: $(libdl)
 297 $(objpfx)neededtest2.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 298                           $(objpfx)neededobj3.so
 299
 300 $(objpfx)neededtest3: $(libdl)
 301 $(objpfx)neededtest3.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 302                           $(objpfx)neededobj3.so $(objpfx)neededobj4.so
 303
 304 neededtest4-ENV = LC_ALL=C LANGUAGE=C
 305 $(objpfx)neededtest4: $(libdl) $(objpfx)neededobj1.so
 306 $(objpfx)neededtest4.out: $(objpfx)neededobj5.so $(objpfx)neededobj6.so
 307
 308 $(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl)
 309 LDFLAGS-restest1 = -rdynamic
 310
 311 $(objpfx)restest2: $(libdl)
 312 LDFLAGS-restest2 = -rdynamic
 313
 314 $(objpfx)restest1.out: $(test-modules)
 315
 316 preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5
 317 $(objpfx)preloadtest: $(objpfx)testobj6.so
 318 LDFLAGS-preloadtest = -rdynamic
 319 $(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so)
 320 preloadtest-ENV = \
 321   LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so)))
 322
 323 $(objpfx)loadfail: $(libdl)
 324 LDFLAGS-loadfail = -rdynamic
 325
 326 $(objpfx)loadfail.out: $(objpfx)failobj.so
 327
 328 $(objpfx)multiload: $(libdl)
 329 LDFLAGS-multiload = -rdynamic
 330 CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
 331
 332 $(objpfx)multiload.out: $(objpfx)testobj1.so
 333
 334 $(objpfx)origtest: $(libdl)
 335 LDFLAGS-origtest = -rdynamic
 336 $(objpfx)origtest.out: $(objpfx)testobj1.so
 337
 338 ifeq ($(have-thread-library),yes)
 339 $(objpfx)resolvfail: $(libdl) $(shared-thread-library)
 340 else
 341 $(objpfx)resolvfail: $(libdl)
 342 endif
 343
 344 $(objpfx)constload1: $(libdl)
 345 $(objpfx)constload1.out: $(objpfx)constload2.so $(objpfx)constload3.so
 346
 347 $(objpfx)order: $(addprefix $(objpfx),dep4.so dep3.so dep2.so dep1.so)
 348
 349 $(objpfx)order.out: $(objpfx)order
 350         $(elf-objpfx)$(rtld-installed-name) \
 351           --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
 352           $(objpfx)order > $@
 353         (echo "0123456789" | cmp $@ -) > /dev/null
 354
 355 $(objpfx)vismain: $(addprefix $(objpfx),vismod1.so vismod2.so)
 356 $(objpfx)vismain.out: $(addprefix $(objpfx),vismod3.so)
 357 vismain-ENV = LD_PRELOAD=$(addprefix $(objpfx),vismod3.so)
 358
 359 $(objpfx)noload: $(objpfx)testobj1.so
 360 LDFLAGS-noload = -rdynamic
 361 $(objpfx)noload.out: $(objpfx)testobj5.so
 362
 363 LDFLAGS-nodelete = -rdynamic
 364 LDFLAGS-nodelmod1.so = -Wl,--enable-new-dtags,-z,nodelete
 365 LDFLAGS-nodelmod4.so = -Wl,--enable-new-dtags,-z,nodelete
 366 $(objpfx)nodelete: $(libdl)
 367 $(objpfx)nodelete.out: $(objpfx)nodelmod1.so $(objpfx)nodelmod2.so \
 368                        $(objpfx)nodelmod3.so
 369
 370 LDFLAGS-nodlopenmod.so = -Wl,--enable-new-dtags,-z,nodlopen
 371 $(objpfx)nodlopen: $(libdl)
 372 $(objpfx)nodlopen.out: $(objpfx)nodlopenmod.so
 373
 374 $(objpfx)filtmod1.so: $(objpfx)filtmod1.os $(objpfx)filtmod2.so
 375         $(LINK.o) -shared -o $@ -B$(csu-objpfx) $(LDFLAGS.so) \
 376                   -L$(subst :, -L,$(rpath-link)) \
 377                   -Wl,-rpath-link=$(rpath-link) \
 378                   $< -Wl,-F,$(objpfx)filtmod2.so
 379 $(objpfx)filter: $(objpfx)filtmod1.so
 380
 381 $(objpfx)unload: $(libdl)
 382 $(objpfx)unload.out: $(objpfx)unloadmod.so
 383
 384 $(objpfx)reldep: $(libdl)
 385 $(objpfx)reldep.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod2.so
 386
 387 $(objpfx)reldep2: $(libdl)
 388 $(objpfx)reldep2.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod3.so
 389
 390 $(objpfx)reldep3: $(libdl)
 391 $(objpfx)reldep3.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod4.so
 392
 393 $(objpfx)reldep4: $(libdl)
 394 $(objpfx)reldep4.out: $(objpfx)reldep4mod1.so $(objpfx)reldep4mod2.so
 395
 396 $(objpfx)next: $(objpfx)nextmod1.so $(objpfx)nextmod2.so $(libdl)
 397
 398 $(objpfx)unload2: $(libdl)
 399 $(objpfx)unload2.out: $(objpfx)unload2mod.so $(objpfx)unload2dep.so
 400
 401 $(objpfx)lateglobal: $(libdl)
 402 $(objpfx)lateglobal.out: $(objpfx)ltglobmod1.so $(objpfx)ltglobmod2.so
 403
 404 $(objpfx)tst-pathopt: $(libdl)
 405 $(objpfx)tst-pathopt.out: tst-pathopt.sh $(objpfx)tst-pathopt \
 406                           $(objpfx)pathoptobj.so
 407         $(SHELL) -e $< $(common-objpfx)
 408
 409 $(objpfx)initfirst: $(libdl)
 410 $(objpfx)initfirst.out: $(objpfx)firstobj.so
 411
 412 $(objpfx)global: $(objpfx)globalmod1.so
 413 $(objpfx)global.out: $(objpfx)reldepmod1.so