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 Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the 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 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, write to the Free
  16 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17 # 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 dl-iteratephdr \
  25                   dl-iteratephdr-static dl-addr enbl-secure dl-profstub \
  26                   dl-origin dl-libc dl-sym
  27
  28 # The core dynamic linking functions are in libc for the static and
  29 # profiled libraries.
  30 dl-routines     = $(addprefix dl-,load cache lookup object reloc deps \
  31                                   runtime error init fini debug misc \
  32                                   version profile)
  33 all-dl-routines = $(dl-routines) $(sysdep-dl-routines)
  34 # But they are absent from the shared libc, because that code is in ld.so.
  35 elide-routines.os = $(all-dl-routines) dl-support enbl-secure \
  36                     dl-iteratephdr-static
  37
  38 # ld.so uses those routines, plus some special stuff for being the program
  39 # interpreter and operating independent of libc.
  40 rtld-routines   := rtld $(dl-routines) dl-sysdep dl-environ dl-minimal
  41 all-rtld-routines = $(rtld-routines) $(sysdep-rtld-routines)
  42
  43 distribute      := $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \
  44                    dl-cache.h dl-hash.h soinit.c sofini.c ldd.bash.in \
  45                    genrtldtbl.awk atomicity.h dl-procinfo.h ldsodefs.h \
  46                    dl-librecon.h interp.c sln.c dl-dst.h hp-timing.h \
  47                    do-lookup.h dl-lookupcfg.h sprof.c gen-trusted-dirs.awk \
  48                    testobj1.c testobj2.c testobj3.c testobj4.c testobj5.c \
  49                    testobj6.c testobj1_1.c failobj.c unloadmod.c \
  50                    ldconfig.h ldconfig.c cache.c readlib.c readelflib.c \
  51                    chroot_canon.c gccframe.h \
  52                    dep1.c dep2.c dep3.c dep4.c dl-dtprocnum.h unsecvars.h \
  53                    vismain.c vismod1.c vismod2.c vismod3.c \
  54                    constload2.c constload3.c filtmod1.c filtmod2.c \
  55                    nodlopenmod.c nodelete.c nodelmod1.c nodelmod2.c \
  56                    nodelmod3.c nodelmod4.c nodlopen.c dl-osinfo.h \
  57                    reldepmod1.c reldepmod2.c reldepmod3.c reldepmod4.c \
  58                    reldep4mod1.c reldep4mod2.c reldep4mod3.c reldep4mod4.c \
  59                    nextmod1.c nextmod2.c pathoptobj.c tst-pathopt.sh \
  60                    neededobj1.c neededobj2.c neededobj3.c neededobj4.c \
  61                    neededobj5.c neededobj6.c firstobj.c \
  62                    unload2mod.c unload2dep.c ltglobmod1.c ltglobmod2.c \
  63                    testobj.h vismod.h globalmod1.c
  64
  65 include ../Makeconfig
  66
  67 before-compile  = $(objpfx)trusted-dirs.h
  68 generated       := trusted-dirs.h trusted-dirs.st for-renamed/renamed.so
  69 generated-dirs  := for-renamed
  70
  71 ifeq ($(versioning),yes)
  72 ld-map          = $(common-objpfx)ld.map
  73 endif
  74
  75 ifeq (yes,$(build-shared))
  76 extra-objs      = $(all-rtld-routines:%=%.os) soinit.os sofini.os interp.os
  77 generated       += librtld.os dl-allobjs.os ld.so ldd
  78 install-others  = $(inst_slibdir)/$(rtld-installed-name)
  79 install-bin     = ldd
  80 endif
  81
  82 others          = sprof sln
  83 install-bin     += sprof
  84 others-static   = sln
  85 install-rootsbin = sln
  86
  87 ifeq (yes,$(use-ldconfig))
  88 ifeq (yes,$(build-shared))
  89 others-static   += ldconfig
  90 others          += ldconfig
  91 install-rootsbin += ldconfig
  92
  93 ldconfig-modules := cache readlib xmalloc xstrdup chroot_canon
  94 extra-objs      += $(ldconfig-modules:=.o)
  95
  96 # To find xmalloc.c and xstrdup.c
  97 vpath %.c ../locale/programs
  98
  99 endif
 100 endif
 101
 102 ifeq (yes,$(build-shared))
 103 tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
 104         constload1 order $(tests-vis-$(have-protected)) noload filter unload \
 105         reldep reldep2 reldep3 reldep4 next $(tests-nodelete-$(have-z-nodelete)) \
 106         $(tests-nodlopen-$(have-z-nodlopen)) neededtest neededtest2 \
 107         neededtest3 neededtest4 unload2 lateglobal initfirst global \
 108         restest2
 109 test-srcs = tst-pathopt
 110 tests-vis-yes = vismain
 111 tests-nodelete-yes = nodelete
 112 tests-nodlopen-yes = nodlopen
 113 endif
 114 modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
 115                 testobj1_1 failobj constload2 constload3 unloadmod \
 116                 dep1 dep2 dep3 dep4 $(modules-vis-$(have-protected)) \
 117                 $(modules-nodelete-$(have-z-nodelete)) \
 118                 $(modules-nodlopen-$(have-z-nodlopen)) filtmod1 filtmod2 \
 119                 reldepmod1 reldepmod2 reldepmod3 reldepmod4 nextmod1 nextmod2 \
 120                 reldep4mod1 reldep4mod2 reldep4mod3 reldep4mod4 \
 121                 neededobj1 neededobj2 neededobj3 neededobj4 \
 122                 neededobj5 neededobj6 firstobj globalmod1 \
 123                 unload2mod unload2dep ltglobmod1 ltglobmod2 pathoptobj
 124 modules-vis-yes = vismod1 vismod2 vismod3
 125 modules-nodelete-yes = nodelmod1 nodelmod2 nodelmod3 nodelmod4
 126 modules-nodlopen-yes = nodlopenmod
 127 extra-objs += $(addsuffix .os,$(strip $(modules-names)))
 128
 129 include ../Rules
 130
 131 ifeq (yes,$(build-shared))
 132 # Make sure these things are built in the `make lib' pass so they can be used
 133 # to run programs during the `make others' pass.
 134 lib-noranlib: $(objpfx)$(rtld-installed-name) \
 135               $(addprefix $(objpfx),$(extra-objs))
 136 endif
 137
 138 # Command to link into a larger single relocatable object.
 139 reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@
 140
 141 $(objpfx)dl-allobjs.os: $(all-rtld-routines:%=$(objpfx)%.os)
 142         $(reloc-link) $^
 143
 144 # Link together the dynamic linker into a single relocatable object.
 145 $(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
 146         $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
 147
 148 # Do we need a linker script?
 149 rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
 150
 151 ifneq (,$(rtld-ldscript-in))
 152 rtld-ldscript = $(objpfx)rtld-ldscript
 153 generated += rtld-ldscript
 154
 155 LDFLAGS-rtld = -T $(rtld-ldscript)
 156 before-compile += $(rtld-ldscript)
 157
 158 rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
 159 include $(rtld-parms)
 160
 161 $(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms)
 162         sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
 163             -e 's#@@rtld-arch@@#$(rtld-arch)#' \
 164             -e 's#@@rtld-entry@@#$(rtld-entry)#' \
 165             -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
 166 endif
 167
 168 $(objpfx)ld.so: $(objpfx)librtld.os $(rtld-ldscript) $(ld-map)
 169         $(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \
 170                   $(filter-out $(rtld-ldscript) $(map-file),$^)         \
 171                   $(load-map-file) -Wl,-soname=$(rtld-installed-name)
 172
 173 # interp.c exists just to get this string into the libraries.
 174 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
 175
 176 ifneq (ld.so,$(rtld-installed-name))
 177 # Make sure ld.so.1 exists in the build directory so we can link
 178 # against it.
 179 $(objpfx)$(rtld-installed-name): $(objpfx)ld.so
 180         rm -f $@
 181         ln -s $(<F) $@
 182 generated += $(rtld-installed-name)
 183 endif
 184
 185 # Build a file mentioning all trustworthy directories to look for shared
 186 # libraries when using LD_LIBRARY_PATH in a setuid program.  The user can
 187 # add directories to the list by defining $(user-defined-trusted-dirs)
 188 # before starting make.
 189 $(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @:
 190 $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
 191         $(make-target-directory)
 192         echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))"    \
 193         | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
 194         $(move-if-change) ${@:st=T} ${@:st=h}
 195         touch $@
 196 CPPFLAGS-dl-load.c = -I$(objpfx). -I$(csu-objpfx).
 197
 198 ifeq (yes,$(build-shared))
 199 $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 200         $(make-target-directory)
 201         $(do-install-program)
 202
 203 $(inst_slibdir)/$(rtld-installed-name): \
 204   $(inst_slibdir)/$(rtld-version-installed-name) \
 205   $(inst_slibdir)/libc-$(version).so
 206         $(make-shlib-link)
 207
 208 # Special target called by parent to install just the dynamic linker.
 209 .PHONY: ldso_install
 210 ldso_install: $(inst_slibdir)/$(rtld-installed-name)
 211 endif
 212
 213
 214 common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
 215                      -e 's%@VERSION@%$(version)%g'
 216 sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g'
 217 bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \
 218                    -e 's%@TEXTDOMAINDIR@%$(msgcatdir)%g'
 219
 220 ifneq ($(have-bash2),yes)
 221 ldd-shell = sh
 222 else
 223 ldd-shell = bash
 224 endif
 225
 226 ifeq ($(ldd-rewrite-script),no)
 227 define gen-ldd
 228 sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new
 229 endef
 230 else
 231 define gen-ldd
 232 sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new
 233 endef
 234 endif
 235
 236 $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
 237               $(common-objpfx)config.make
 238         $(gen-ldd)
 239         chmod 555 $@.new
 240         mv -f $@.new $@
 241
 242 $(objpfx)sprof: $(libdl)
 243
 244 $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
 245 SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
 246 CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' -D'SLIBDIR="$(slibdir)"'
 247 CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
 248 CFLAGS-cache.c = $(SYSCONF-FLAGS)
 249
 250 test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names))))
 251 generated += $(addsuffix .so,$(strip $(modules-names)))
 252
 253 ifeq (yes,$(build-shared))
 254 ifeq ($(cross-compiling),no)
 255 tests: $(objpfx)tst-pathopt.out
 256 endif
 257 endif
 258
 259 $(objpfx)testobj1.so: $(libdl)
 260 $(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl)
 261 $(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl)
 262 $(objpfx)testobj3.so: $(libdl)
 263 $(objpfx)testobj4.so: $(libdl)
 264 $(objpfx)testobj5.so: $(libdl)
 265 $(objpfx)testobj6.so: $(objpfx)testobj1.so $(objpfx)testobj2.so $(libdl)
 266 $(objpfx)failobj.so: $(objpfx)testobj6.so
 267 $(objpfx)dep1.so: $(objpfx)dep2.so $(objpfx)dep4.so
 268 $(objpfx)dep2.so: $(objpfx)dep3.so $(objpfx)dep4.so
 269 $(objpfx)dep4.so: $(objpfx)dep3.so
 270 $(objpfx)nodelmod3.so: $(objpfx)nodelmod4.so
 271 $(objpfx)nextmod1.so: $(libdl)
 272 $(objpfx)neededobj1.so: $(libdl)
 273 $(objpfx)neededobj2.so: $(objpfx)neededobj1.so $(libdl)
 274 $(objpfx)neededobj3.so: $(objpfx)neededobj1.so $(objpfx)neededobj2.so $(libdl)
 275 $(objpfx)neededobj4.so: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 276                         $(objpfx)neededobj3.so $(libdl)
 277 $(objpfx)neededobj6.so: $(objpfx)neededobj5.so
 278 $(objpfx)unload2mod.so: $(objpfx)unload2dep.so
 279 $(objpfx)ltglobmod2.so: $(libdl)
 280 $(objpfx)firstobj.so: $(shared-thread-library)
 281 $(objpfx)globalmod1.so: $(libdl)
 282 $(objpfx)reldep4mod1.so: $(objpfx)reldep4mod3.so
 283 $(objpfx)reldep4mod2.so: $(objpfx)reldep4mod4.so
 284
 285 # filtmod1.so has a special rule
 286 $(filter-out $(objpfx)filtmod1.so, $(test-modules)): $(objpfx)%.so: $(objpfx)%.os
 287         $(build-module)
 288
 289 $(objpfx)loadtest: $(libdl)
 290 LDFLAGS-loadtest = -rdynamic
 291
 292 $(objpfx)loadtest.out: $(test-modules)
 293
 294 $(objpfx)neededtest: $(libdl)
 295 $(objpfx)neededtest.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 296                          $(objpfx)neededobj3.so
 297
 298 $(objpfx)neededtest2: $(libdl)
 299 $(objpfx)neededtest2.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 300                           $(objpfx)neededobj3.so
 301
 302 $(objpfx)neededtest3: $(libdl)
 303 $(objpfx)neededtest3.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 304                           $(objpfx)neededobj3.so $(objpfx)neededobj4.so
 305
 306 neededtest4-ENV = LC_ALL=C LANGUAGE=C
 307 $(objpfx)neededtest4: $(libdl) $(objpfx)neededobj1.so
 308 $(objpfx)neededtest4.out: $(objpfx)neededobj5.so $(objpfx)neededobj6.so
 309
 310 $(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl)
 311 LDFLAGS-restest1 = -rdynamic
 312
 313 $(objpfx)restest2: $(libdl)
 314 LDFLAGS-restest2 = -rdynamic
 315
 316 $(objpfx)restest1.out: $(test-modules)
 317
 318 preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5
 319 $(objpfx)preloadtest: $(objpfx)testobj6.so
 320 LDFLAGS-preloadtest = -rdynamic
 321 $(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so)
 322 preloadtest-ENV = \
 323   LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so)))
 324
 325 $(objpfx)loadfail: $(libdl)
 326 LDFLAGS-loadfail = -rdynamic
 327
 328 $(objpfx)loadfail.out: $(objpfx)failobj.so
 329
 330 $(objpfx)multiload: $(libdl)
 331 LDFLAGS-multiload = -rdynamic
 332 CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
 333
 334 $(objpfx)multiload.out: $(objpfx)testobj1.so
 335
 336 $(objpfx)origtest: $(libdl)
 337 LDFLAGS-origtest = -rdynamic
 338 $(objpfx)origtest.out: $(objpfx)testobj1.so
 339
 340 ifeq ($(have-thread-library),yes)
 341 $(objpfx)resolvfail: $(libdl) $(shared-thread-library)
 342 else
 343 $(objpfx)resolvfail: $(libdl)
 344 endif
 345
 346 $(objpfx)constload1: $(libdl)
 347 $(objpfx)constload1.out: $(objpfx)constload2.so $(objpfx)constload3.so
 348
 349 $(objpfx)order: $(addprefix $(objpfx),dep4.so dep3.so dep2.so dep1.so)
 350
 351 $(objpfx)order.out: $(objpfx)order
 352         $(elf-objpfx)$(rtld-installed-name) \
 353           --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
 354           $(objpfx)order > $@
 355         (echo "0123456789" | cmp $@ -) > /dev/null
 356
 357 $(objpfx)vismain: $(addprefix $(objpfx),vismod1.so vismod2.so)
 358 $(objpfx)vismain.out: $(addprefix $(objpfx),vismod3.so)
 359 vismain-ENV = LD_PRELOAD=$(addprefix $(objpfx),vismod3.so)
 360
 361 $(objpfx)noload: $(objpfx)testobj1.so
 362 LDFLAGS-noload = -rdynamic
 363 $(objpfx)noload.out: $(objpfx)testobj5.so
 364
 365 LDFLAGS-nodelete = -rdynamic
 366 LDFLAGS-nodelmod1.so = -Wl,--enable-new-dtags,-z,nodelete
 367 LDFLAGS-nodelmod4.so = -Wl,--enable-new-dtags,-z,nodelete
 368 $(objpfx)nodelete: $(libdl)
 369 $(objpfx)nodelete.out: $(objpfx)nodelmod1.so $(objpfx)nodelmod2.so \
 370                        $(objpfx)nodelmod3.so
 371
 372 LDFLAGS-nodlopenmod.so = -Wl,--enable-new-dtags,-z,nodlopen
 373 $(objpfx)nodlopen: $(libdl)
 374 $(objpfx)nodlopen.out: $(objpfx)nodlopenmod.so
 375
 376 $(objpfx)filtmod1.so: $(objpfx)filtmod1.os $(objpfx)filtmod2.so
 377         $(LINK.o) -shared -o $@ -B$(csu-objpfx) $(LDFLAGS.so) \
 378                   -L$(subst :, -L,$(rpath-link)) \
 379                   -Wl,-rpath-link=$(rpath-link) \
 380                   $< -Wl,-F,$(objpfx)filtmod2.so
 381 $(objpfx)filter: $(objpfx)filtmod1.so
 382
 383 $(objpfx)unload: $(libdl)
 384 $(objpfx)unload.out: $(objpfx)unloadmod.so
 385
 386 $(objpfx)reldep: $(libdl)
 387 $(objpfx)reldep.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod2.so
 388
 389 $(objpfx)reldep2: $(libdl)
 390 $(objpfx)reldep2.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod3.so
 391
 392 $(objpfx)reldep3: $(libdl)
 393 $(objpfx)reldep3.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod4.so
 394
 395 $(objpfx)reldep4: $(libdl)
 396 $(objpfx)reldep4.out: $(objpfx)reldep4mod1.so $(objpfx)reldep4mod2.so
 397
 398 $(objpfx)next: $(objpfx)nextmod1.so $(objpfx)nextmod2.so $(libdl)
 399
 400 $(objpfx)unload2: $(libdl)
 401 $(objpfx)unload2.out: $(objpfx)unload2mod.so $(objpfx)unload2dep.so
 402
 403 $(objpfx)lateglobal: $(libdl)
 404 $(objpfx)lateglobal.out: $(objpfx)ltglobmod1.so $(objpfx)ltglobmod2.so
 405
 406 $(objpfx)tst-pathopt: $(libdl)
 407 $(objpfx)tst-pathopt.out: tst-pathopt.sh $(objpfx)tst-pathopt \
 408                           $(objpfx)pathoptobj.so
 409         $(SHELL) -e $< $(common-objpfx)
 410
 411 $(objpfx)initfirst: $(libdl)
 412 $(objpfx)initfirst.out: $(objpfx)firstobj.so
 413
 414 $(objpfx)global: $(objpfx)globalmod1.so
 415 $(objpfx)global.out: $(objpfx)reldepmod1.so