elf/Makefile

   1 # Copyright (C) 1995, 1996, 1997, 1998, 1999 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 preinit)
  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
  46 include ../Makeconfig
  47
  48 before-compile = $(objpfx)trusted-dirs.h
  49
  50 ifeq ($(versioning),yes)
  51 ld-map          = $(common-objpfx)ld.so.map
  52 endif
  53
  54 ifeq (yes,$(build-shared))
  55 extra-objs      = $(rtld-routines:=.os) soinit.os sofini.os interp.os
  56 generated       = librtld.os dl-allobjs.os ld.so trusted-dirs.h trusted-dirs.st
  57 install-others  = $(inst_slibdir)/$(rtld-installed-name)
  58 install-bin     = ldd
  59 generated      += ldd
  60 endif
  61
  62 others          = sprof sln
  63 install-bin     += sprof
  64 others-static   = sln
  65 install-rootsbin = sln
  66
  67 ifeq (yes,$(has-ldconfig))
  68 others-static   += ldconfig
  69 others          += ldconfig
  70 install-rootsbin += ldconfig
  71 endif
  72
  73 ifeq (yes,$(build-shared))
  74 tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail
  75 endif
  76 modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
  77                 testobj1_1 failobj
  78 extra-objs += $(modules-names:=.os)
  79
  80 include ../Rules
  81
  82 ifeq (yes,$(build-shared))
  83 # Make sure these things are built in the `make lib' pass so they can be used
  84 # to run programs during the `make others' pass.
  85 lib-noranlib: $(objpfx)$(rtld-installed-name) \
  86               $(addprefix $(objpfx),$(extra-objs))
  87 endif
  88
  89 # Command to link into a larger single relocatable object.
  90 reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@
  91
  92 $(objpfx)dl-allobjs.os: $(rtld-routines:%=$(objpfx)%.os)
  93         $(reloc-link) $^
  94
  95 # Link together the dynamic linker into a single relocatable object.
  96 $(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
  97         $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
  98
  99 # Do we need a linker script?
 100 rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
 101
 102 ifneq (,$(rtld-ldscript-in))
 103 rtld-ldscript = $(objpfx)rtld-ldscript
 104 generated += rtld-ldscript
 105
 106 LDFLAGS-rtld = -T $(rtld-ldscript)
 107 before-compile += $(rtld-ldscript)
 108
 109 rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
 110 include $(rtld-parms)
 111
 112 $(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms)
 113         sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
 114             -e 's#@@rtld-arch@@#$(rtld-arch)#' \
 115             -e 's#@@rtld-entry@@#$(rtld-entry)#' \
 116             -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
 117 endif
 118
 119 $(objpfx)ld.so: $(objpfx)librtld.os $(rtld-ldscript) $(ld-map)
 120         $(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \
 121                   $(filter-out $(rtld-ldscript) $(map-file),$^)         \
 122                   $(load-map-file) -Wl,-soname=$(rtld-installed-name)
 123
 124 # interp.c exists just to get this string into the libraries.
 125 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
 126
 127 ifneq (ld.so,$(rtld-installed-name))
 128 # Make sure ld.so.1 exists in the build directory so we can link
 129 # against it.
 130 $(objpfx)$(rtld-installed-name): $(objpfx)ld.so
 131         rm -f $@
 132         ln -s $(<F) $@
 133 generated += $(rtld-installed-name)
 134 endif
 135
 136 # Build a file mentioning all trustworthy directories to look for shared
 137 # libraries when using LD_LIBRARY_PATH in a setuid program.  The user can
 138 # add directories to the list by defining $(user-defined-trusted-dirs)
 139 # before starting make.
 140 $(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @:
 141 $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
 142         $(make-target-directory)
 143         echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))"    \
 144         | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
 145         $(move-if-change) ${@:st=T} ${@:st=h}
 146         touch $@
 147 CPPFLAGS-dl-load.c = -I$(objpfx).
 148 CFLAGS-dl-load.c += -Wno-uninitialized
 149
 150 ifeq (yes,$(build-shared))
 151 $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 152         $(do-install-program)
 153
 154 $(inst_slibdir)/$(rtld-installed-name): \
 155   $(inst_slibdir)/$(rtld-version-installed-name)
 156         $(make-shlib-link)
 157
 158 # Special target called by parent to install just the dynamic linker.
 159 .PHONY: ldso_install
 160 ldso_install: $(inst_slibdir)/$(rtld-installed-name)
 161 endif
 162
 163
 164 common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
 165                      -e 's%@VERSION@%$(version)%g'
 166 sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g'
 167 bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \
 168                    -e 's%@TEXTDOMAINDIR@%$(msgcatdir)%g'
 169
 170 ifneq ($(have-bash2),yes)
 171 ldd-shell = sh
 172 else
 173 ldd-shell = bash
 174 endif
 175
 176 ifeq ($(ldd-rewrite-script),no)
 177 define gen-ldd
 178 sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new
 179 endef
 180 else
 181 define gen-ldd
 182 sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new
 183 endef
 184 endif
 185
 186 $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
 187               $(common-objpfx)config.make
 188         $(gen-ldd)
 189         chmod 555 $@.new
 190         mv -f $@.new $@
 191
 192 $(objpfx)sprof: $(libdl)
 193
 194 test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(modules-names)))
 195 generated += $(addsuffix .so,$(modules-names))
 196
 197 $(objpfx)testobj1.so: $(libdl)
 198 $(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl)
 199 $(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl)
 200 $(objpfx)testobj3.so: $(libdl)
 201 $(objpfx)testobj4.so: $(libdl)
 202 $(objpfx)testobj5.so: $(libdl)
 203 $(objpfx)testobj6.so: $(libdl)
 204 $(objpfx)failobj.so: $(objpfx)testobj6.so
 205
 206 $(test-modules): $(objpfx)%.so: $(objpfx)%.os
 207         $(build-module)
 208
 209 $(objpfx)loadtest: $(libdl)
 210 LDFLAGS-loadtest = -rdynamic
 211
 212 $(objpfx)loadtest.out: $(test-modules)
 213
 214 $(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl)
 215 LDFLAGS-restest1 = -rdynamic
 216
 217 $(objpfx)restest1.out: $(test-modules)
 218
 219 preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5
 220 $(objpfx)preloadtest: $(objpfx)testobj6.so
 221 LDFLAGS-preloadtest = -rdynamic
 222 $(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so)
 223 preloadtest-ENV = \
 224   LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so)))
 225
 226 $(objpfx)loadfail: $(libdl)
 227 LDFLAGS-loadfail = -rdynamic
 228
 229 $(objpfx)loadfail.out: $(objpfx)failobj.so
 230
 231 $(objpfx)multiload: $(libdl)
 232 LDFLAGS-multiload = -rdynamic
 233 CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
 234
 235 $(objpfx)multiload.out: $(objpfx)testobj1.so
 236
 237 $(objpfx)origtest: $(libdl)
 238 $(objpfx)origtest.out: $(objpfx)testobj1.so
 239
 240 ifeq ($(have-thread-library),yes)
 241 $(objpfx)resolvfail: $(libdl) $(shared-thread-library)
 242 else
 243 $(objpfx)resolvfail: $(libdl)
 244 endif