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