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