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 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                    dep1.c dep2.c dep3.c dep4.c dl-dtprocnum.h \
  50                    vismain.c vismod1.c vismod2.c vismod3.c \
  51                    constload2.c constload3.c filtmod1.c filtmod2.c \
  52                    nodlopenmod.c nodelete.c nodelmod1.c nodelmod2.c \
  53                    nodelmod3.c nodelmod4.c nodlopen.c dl-osinfo.h \
  54                    reldepmod1.c reldepmod2.c reldepmod3.c reldepmod4.c \
  55                    nextmod1.c nextmod2.c
  56
  57 include ../Makeconfig
  58
  59 before-compile  = $(objpfx)trusted-dirs.h
  60 generated       := trusted-dirs.h trusted-dirs.st
  61
  62 ifeq ($(versioning),yes)
  63 ld-map          = $(common-objpfx)ld.map
  64 endif
  65
  66 ifeq (yes,$(build-shared))
  67 extra-objs      = $(all-rtld-routines:%=%.os) soinit.os sofini.os interp.os
  68 generated       += librtld.os dl-allobjs.os ld.so ldd
  69 install-others  = $(inst_slibdir)/$(rtld-installed-name)
  70 install-bin     = ldd
  71 endif
  72
  73 others          = sprof sln
  74 install-bin     += sprof
  75 others-static   = sln
  76 install-rootsbin = sln
  77
  78 ifeq (yes,$(use-ldconfig))
  79 ifeq (yes,$(build-shared))
  80 others-static   += ldconfig
  81 others          += ldconfig
  82 install-rootsbin += ldconfig
  83
  84 ldconfig-modules := cache readlib xmalloc xstrdup
  85 extra-objs      += $(ldconfig-modules:=.o)
  86
  87 # To find xmalloc.c and xstrdup.c
  88 vpath %.c ../locale/programs
  89
  90 endif
  91 endif
  92
  93 ifeq (yes,$(build-shared))
  94 tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
  95         constload1 order $(tests-vis-$(have-protected)) noload filter unload \
  96         reldep reldep2 reldep3 next $(tests-nodelete-$(have-z-nodelete)) \
  97         $(tests-nodlopen-$(have-z-nodlopen))
  98 tests-vis-yes = vismain
  99 tests-nodelete-yes = nodelete
 100 tests-nodlopen-yes = nodlopen
 101 endif
 102 modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
 103                 testobj1_1 failobj constload2 constload3 unloadmod \
 104                 dep1 dep2 dep3 dep4 $(modules-vis-$(have-protected)) \
 105                 $(modules-nodelete-$(have-z-nodelete)) \
 106                 $(modules-nodlopen-$(have-z-nodlopen)) filtmod1 filtmod2 \
 107                 reldepmod1 reldepmod2 reldepmod3 reldepmod4 nextmod1 nextmod2
 108 modules-vis-yes = vismod1 vismod2 vismod3
 109 modules-nodelete-yes = nodelmod1 nodelmod2 nodelmod3 nodelmod4
 110 modules-nodlopen-yes = nodlopenmod
 111 extra-objs += $(addsuffix .os,$(strip $(modules-names)))
 112
 113 include ../Rules
 114
 115 ifeq (yes,$(build-shared))
 116 # Make sure these things are built in the `make lib' pass so they can be used
 117 # to run programs during the `make others' pass.
 118 lib-noranlib: $(objpfx)$(rtld-installed-name) \
 119               $(addprefix $(objpfx),$(extra-objs))
 120 endif
 121
 122 # Command to link into a larger single relocatable object.
 123 reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@
 124
 125 $(objpfx)dl-allobjs.os: $(all-rtld-routines:%=$(objpfx)%.os)
 126         $(reloc-link) $^
 127
 128 # Link together the dynamic linker into a single relocatable object.
 129 $(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
 130         $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
 131
 132 # Do we need a linker script?
 133 rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
 134
 135 ifneq (,$(rtld-ldscript-in))
 136 rtld-ldscript = $(objpfx)rtld-ldscript
 137 generated += rtld-ldscript
 138
 139 LDFLAGS-rtld = -T $(rtld-ldscript)
 140 before-compile += $(rtld-ldscript)
 141
 142 rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
 143 include $(rtld-parms)
 144
 145 $(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms)
 146         sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
 147             -e 's#@@rtld-arch@@#$(rtld-arch)#' \
 148             -e 's#@@rtld-entry@@#$(rtld-entry)#' \
 149             -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
 150 endif
 151
 152 $(objpfx)ld.so: $(objpfx)librtld.os $(rtld-ldscript) $(ld-map)
 153         $(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \
 154                   $(filter-out $(rtld-ldscript) $(map-file),$^)         \
 155                   $(load-map-file) -Wl,-soname=$(rtld-installed-name)
 156
 157 # interp.c exists just to get this string into the libraries.
 158 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
 159
 160 ifneq (ld.so,$(rtld-installed-name))
 161 # Make sure ld.so.1 exists in the build directory so we can link
 162 # against it.
 163 $(objpfx)$(rtld-installed-name): $(objpfx)ld.so
 164         rm -f $@
 165         ln -s $(<F) $@
 166 generated += $(rtld-installed-name)
 167 endif
 168
 169 # Build a file mentioning all trustworthy directories to look for shared
 170 # libraries when using LD_LIBRARY_PATH in a setuid program.  The user can
 171 # add directories to the list by defining $(user-defined-trusted-dirs)
 172 # before starting make.
 173 $(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @:
 174 $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
 175         $(make-target-directory)
 176         echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))"    \
 177         | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
 178         $(move-if-change) ${@:st=T} ${@:st=h}
 179         touch $@
 180 CPPFLAGS-dl-load.c = -I$(objpfx).
 181
 182 ifeq (yes,$(build-shared))
 183 $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 184         $(make-target-directory)
 185         $(do-install-program)
 186
 187 $(inst_slibdir)/$(rtld-installed-name): \
 188   $(inst_slibdir)/$(rtld-version-installed-name) \
 189   $(inst_slibdir)/libc-$(version).so
 190         $(make-shlib-link)
 191
 192 # Special target called by parent to install just the dynamic linker.
 193 .PHONY: ldso_install
 194 ldso_install: $(inst_slibdir)/$(rtld-installed-name)
 195 endif
 196
 197
 198 common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
 199                      -e 's%@VERSION@%$(version)%g'
 200 sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g'
 201 bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \
 202                    -e 's%@TEXTDOMAINDIR@%$(msgcatdir)%g'
 203
 204 ifneq ($(have-bash2),yes)
 205 ldd-shell = sh
 206 else
 207 ldd-shell = bash
 208 endif
 209
 210 ifeq ($(ldd-rewrite-script),no)
 211 define gen-ldd
 212 sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new
 213 endef
 214 else
 215 define gen-ldd
 216 sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new
 217 endef
 218 endif
 219
 220 $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
 221               $(common-objpfx)config.make
 222         $(gen-ldd)
 223         chmod 555 $@.new
 224         mv -f $@.new $@
 225
 226 $(objpfx)sprof: $(libdl)
 227
 228 $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
 229 SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
 230 CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' -D'SLIBDIR="$(slibdir)"'
 231 CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
 232 CFLAGS-cache.c = $(SYSCONF-FLAGS)
 233
 234 test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names))))
 235 generated += $(addsuffix .so,$(strip $(modules-names)))
 236
 237 $(objpfx)testobj1.so: $(libdl)
 238 $(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl)
 239 $(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl)
 240 $(objpfx)testobj3.so: $(libdl)
 241 $(objpfx)testobj4.so: $(libdl)
 242 $(objpfx)testobj5.so: $(libdl)
 243 $(objpfx)testobj6.so: $(libdl)
 244 $(objpfx)failobj.so: $(objpfx)testobj6.so
 245 $(objpfx)dep1.so: $(objpfx)dep2.so $(objpfx)dep4.so
 246 $(objpfx)dep2.so: $(objpfx)dep3.so $(objpfx)dep4.so
 247 $(objpfx)dep4.so: $(objpfx)dep3.so
 248 $(objpfx)nodelmod3.so: $(objpfx)nodelmod4.so
 249 $(objpfx)nextmod1.so: $(libdl)
 250
 251 # filtmod1.so has a special rule
 252 $(filter-out $(objpfx)filtmod1.so, $(test-modules)): $(objpfx)%.so: $(objpfx)%.os
 253         $(build-module)
 254
 255 $(objpfx)loadtest: $(libdl)
 256 LDFLAGS-loadtest = -rdynamic
 257
 258 $(objpfx)loadtest.out: $(test-modules)
 259
 260 $(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl)
 261 LDFLAGS-restest1 = -rdynamic
 262
 263 $(objpfx)restest1.out: $(test-modules)
 264
 265 preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5
 266 $(objpfx)preloadtest: $(objpfx)testobj6.so
 267 LDFLAGS-preloadtest = -rdynamic
 268 $(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so)
 269 preloadtest-ENV = \
 270   LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so)))
 271
 272 $(objpfx)loadfail: $(libdl)
 273 LDFLAGS-loadfail = -rdynamic
 274
 275 $(objpfx)loadfail.out: $(objpfx)failobj.so
 276
 277 $(objpfx)multiload: $(libdl)
 278 LDFLAGS-multiload = -rdynamic
 279 CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
 280
 281 $(objpfx)multiload.out: $(objpfx)testobj1.so
 282
 283 $(objpfx)origtest: $(libdl)
 284 LDFLAGS-origtest = -rdynamic
 285 $(objpfx)origtest.out: $(objpfx)testobj1.so
 286
 287 ifeq ($(have-thread-library),yes)
 288 $(objpfx)resolvfail: $(libdl) $(shared-thread-library)
 289 else
 290 $(objpfx)resolvfail: $(libdl)
 291 endif
 292
 293 $(objpfx)constload1: $(libdl)
 294 $(objpfx)constload1.out: $(objpfx)constload2.so $(objpfx)constload3.so
 295
 296 $(objpfx)order: $(addprefix $(objpfx),dep4.so dep3.so dep2.so dep1.so)
 297
 298 $(objpfx)order.out: $(objpfx)order
 299         $(elf-objpfx)$(rtld-installed-name) \
 300           --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
 301           $(objpfx)order > $@
 302         (echo "0123456789" | cmp $@ -) > /dev/null
 303
 304 $(objpfx)vismain: $(addprefix $(objpfx),vismod1.so vismod2.so)
 305 $(objpfx)vismain.out: $(addprefix $(objpfx),vismod3.so)
 306 vismain-ENV = LD_PRELOAD=$(addprefix $(objpfx),vismod3.so)
 307
 308 $(objpfx)noload: $(objpfx)testobj1.so
 309 LDFLAGS-noload = -rdynamic
 310 $(objpfx)noload.out: $(objpfx)testobj5.so
 311
 312 LDFLAGS-nodelete = -rdynamic
 313 LDFLAGS-nodelmod1.so = -Wl,--enable-new-dtags,-z,nodelete
 314 LDFLAGS-nodelmod4.so = -Wl,--enable-new-dtags,-z,nodelete
 315 $(objpfx)nodelete: $(libdl)
 316 $(objpfx)nodelete.out: $(objpfx)nodelmod1.so $(objpfx)nodelmod2.so \
 317                        $(objpfx)nodelmod3.so
 318
 319 LDFLAGS-nodlopenmod.so = -Wl,--enable-new-dtags,-z,nodlopen
 320 $(objpfx)nodlopen: $(libdl)
 321 $(objpfx)nodlopen.out: $(objpfx)nodlopenmod.so
 322
 323 $(objpfx)filtmod1.so: $(objpfx)filtmod1.os $(objpfx)filtmod2.so
 324         $(LINK.o) -shared -o $@ -B$(csu-objpfx) $(LDFLAGS.so) \
 325                   -L$(subst :, -L,$(rpath-link)) \
 326                   -Wl,-rpath-link=$(rpath-link) \
 327                   $< -Wl,-F,$(objpfx)filtmod2.so
 328 $(objpfx)filter: $(objpfx)filtmod1.so
 329
 330 $(objpfx)unload: $(libdl)
 331 $(objpfx)unload.out: $(objpfx)unloadmod.so
 332
 333 $(objpfx)reldep: $(libdl)
 334 $(objpfx)reldep.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod2.so
 335
 336 $(objpfx)reldep2: $(libdl)
 337 $(objpfx)reldep2.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod3.so
 338
 339 $(objpfx)reldep3: $(libdl)
 340 $(objpfx)reldep3.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod4.so
 341
 342 $(objpfx)next: $(objpfx)nextmod1.so $(objpfx)nextmod2.so $(libdl)