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 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
  47
  48 include ../Makeconfig
  49
  50 before-compile = $(objpfx)trusted-dirs.h
  51
  52 ifeq ($(versioning),yes)
  53 ld-map          = $(common-objpfx)ld.so.map
  54 endif
  55
  56 ifeq (yes,$(build-shared))
  57 extra-objs      = $(rtld-routines:=.os) soinit.os sofini.os interp.os
  58 generated       = librtld.os dl-allobjs.os ld.so trusted-dirs.h trusted-dirs.st
  59 install-others  = $(inst_slibdir)/$(rtld-installed-name)
  60 install-bin     = ldd
  61 generated      += ldd
  62 endif
  63
  64 others          = sprof sln
  65 install-bin     += sprof
  66 others-static   = sln
  67 install-rootsbin = sln
  68
  69 ifeq (yes,$(use-ldconfig))
  70 others-static   += ldconfig
  71 others          += ldconfig
  72 install-rootsbin += ldconfig
  73
  74 ldconfig-modules := cache readlib xmalloc xstrdup
  75 extra-objs      += $(ldconfig-modules:=.o)
  76
  77 # To find xmalloc.c and xstrdup.c
  78 vpath %.c ../locale/programs
  79
  80 endif
  81
  82 ifeq (yes,$(build-shared))
  83 tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
  84         constload1 order
  85 endif
  86 modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
  87                 testobj1_1 failobj constload2 constload3 \
  88                 dep1 dep2 dep3 dep4
  89 extra-objs += $(modules-names:=.os)
  90
  91 include ../Rules
  92
  93 ifeq (yes,$(build-shared))
  94 # Make sure these things are built in the `make lib' pass so they can be used
  95 # to run programs during the `make others' pass.
  96 lib-noranlib: $(objpfx)$(rtld-installed-name) \
  97               $(addprefix $(objpfx),$(extra-objs))
  98 endif
  99
 100 # Command to link into a larger single relocatable object.
 101 reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@
 102
 103 $(objpfx)dl-allobjs.os: $(rtld-routines:%=$(objpfx)%.os)
 104         $(reloc-link) $^
 105
 106 # Link together the dynamic linker into a single relocatable object.
 107 $(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
 108         $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
 109
 110 # Do we need a linker script?
 111 rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
 112
 113 ifneq (,$(rtld-ldscript-in))
 114 rtld-ldscript = $(objpfx)rtld-ldscript
 115 generated += rtld-ldscript
 116
 117 LDFLAGS-rtld = -T $(rtld-ldscript)
 118 before-compile += $(rtld-ldscript)
 119
 120 rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
 121 include $(rtld-parms)
 122
 123 $(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms)
 124         sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
 125             -e 's#@@rtld-arch@@#$(rtld-arch)#' \
 126             -e 's#@@rtld-entry@@#$(rtld-entry)#' \
 127             -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
 128 endif
 129
 130 $(objpfx)ld.so: $(objpfx)librtld.os $(rtld-ldscript) $(ld-map)
 131         $(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \
 132                   $(filter-out $(rtld-ldscript) $(map-file),$^)         \
 133                   $(load-map-file) -Wl,-soname=$(rtld-installed-name)
 134
 135 # interp.c exists just to get this string into the libraries.
 136 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
 137
 138 ifneq (ld.so,$(rtld-installed-name))
 139 # Make sure ld.so.1 exists in the build directory so we can link
 140 # against it.
 141 $(objpfx)$(rtld-installed-name): $(objpfx)ld.so
 142         rm -f $@
 143         ln -s $(<F) $@
 144 generated += $(rtld-installed-name)
 145 endif
 146
 147 # Build a file mentioning all trustworthy directories to look for shared
 148 # libraries when using LD_LIBRARY_PATH in a setuid program.  The user can
 149 # add directories to the list by defining $(user-defined-trusted-dirs)
 150 # before starting make.
 151 $(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @:
 152 $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
 153         $(make-target-directory)
 154         echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))"    \
 155         | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
 156         $(move-if-change) ${@:st=T} ${@:st=h}
 157         touch $@
 158 CPPFLAGS-dl-load.c = -I$(objpfx).
 159
 160 ifeq (yes,$(build-shared))
 161 $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 162         $(make-target-directory)
 163         $(INSTALL_PROGRAM) $< $@.new
 164
 165 $(inst_slibdir)/$(rtld-installed-name): \
 166   $(inst_slibdir)/$(rtld-version-installed-name) \
 167   $(inst_slibdir)/libc-$(version).so
 168         rm -f $@ $<
 169         $(symbolic-link-prog) $<.new $@
 170         ln $<.new $<
 171         rm -f $@
 172         $(symbolic-link-prog) $(<F) $@
 173         rm -f $<.new
 174
 175 # Special target called by parent to install just the dynamic linker.
 176 .PHONY: ldso_install
 177 ldso_install: $(inst_slibdir)/$(rtld-installed-name)
 178 endif
 179
 180
 181 common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
 182                      -e 's%@VERSION@%$(version)%g'
 183 sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g'
 184 bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \
 185                    -e 's%@TEXTDOMAINDIR@%$(msgcatdir)%g'
 186
 187 ifneq ($(have-bash2),yes)
 188 ldd-shell = sh
 189 else
 190 ldd-shell = bash
 191 endif
 192
 193 ifeq ($(ldd-rewrite-script),no)
 194 define gen-ldd
 195 sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new
 196 endef
 197 else
 198 define gen-ldd
 199 sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new
 200 endef
 201 endif
 202
 203 $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
 204               $(common-objpfx)config.make
 205         $(gen-ldd)
 206         chmod 555 $@.new
 207         mv -f $@.new $@
 208
 209 $(objpfx)sprof: $(libdl)
 210
 211 $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
 212
 213 test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(modules-names)))
 214 generated += $(addsuffix .so,$(modules-names))
 215
 216 $(objpfx)testobj1.so: $(libdl)
 217 $(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl)
 218 $(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl)
 219 $(objpfx)testobj3.so: $(libdl)
 220 $(objpfx)testobj4.so: $(libdl)
 221 $(objpfx)testobj5.so: $(libdl)
 222 $(objpfx)testobj6.so: $(libdl)
 223 $(objpfx)failobj.so: $(objpfx)testobj6.so
 224 $(objpfx)dep1.so: $(objpfx)dep2.so $(objpfx)dep4.so
 225 $(objpfx)dep2.so: $(objpfx)dep3.so $(objpfx)dep4.so
 226 $(objpfx)dep4.so: $(objpfx)dep3.so
 227
 228 $(test-modules): $(objpfx)%.so: $(objpfx)%.os
 229         $(build-module)
 230
 231 $(objpfx)loadtest: $(libdl)
 232 LDFLAGS-loadtest = -rdynamic
 233
 234 $(objpfx)loadtest.out: $(test-modules)
 235
 236 $(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl)
 237 LDFLAGS-restest1 = -rdynamic
 238
 239 $(objpfx)restest1.out: $(test-modules)
 240
 241 preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5
 242 $(objpfx)preloadtest: $(objpfx)testobj6.so
 243 LDFLAGS-preloadtest = -rdynamic
 244 $(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so)
 245 preloadtest-ENV = \
 246   LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so)))
 247
 248 $(objpfx)loadfail: $(libdl)
 249 LDFLAGS-loadfail = -rdynamic
 250
 251 $(objpfx)loadfail.out: $(objpfx)failobj.so
 252
 253 $(objpfx)multiload: $(libdl)
 254 LDFLAGS-multiload = -rdynamic
 255 CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
 256
 257 $(objpfx)multiload.out: $(objpfx)testobj1.so
 258
 259 $(objpfx)origtest: $(libdl)
 260 $(objpfx)origtest.out: $(objpfx)testobj1.so
 261
 262 ifeq ($(have-thread-library),yes)
 263 $(objpfx)resolvfail: $(libdl) $(shared-thread-library)
 264 else
 265 $(objpfx)resolvfail: $(libdl)
 266 endif
 267
 268 $(objpfx)constload1: $(libdl)
 269 $(objpfx)constload1.out: $(objpfx)constload2.so $(objpfx)constload3.so
 270
 271 $(objpfx)order: $(addprefix $(objpfx),dep4.so dep3.so dep2.so dep1.so)
 272
 273 $(objpfx)order.out: $(objpfx)order
 274         $(elf-objpfx)$(rtld-installed-name) \
 275           --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
 276           $(objpfx)order > $@
 277         (echo "0123456789" | cmp $@ -) > /dev/null