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      := $(rtld-routines:=.c) dynamic-link.h do-rel.h dl-machine.h \
  44                    dl-cache.h dl-hash.h soinit.c sofini.c ldd.bash.in \
  45                    genrtldtbl.awk atomicity.h dl-procinfo.h ldsodefs.h \
  46                    dl-librecon.h interp.c sln.c dl-dst.h hp-timing.h \
  47                    do-lookup.h dl-lookupcfg.h sprof.c gen-trusted-dirs.awk \
  48                    testobj1.c testobj2.c testobj3.c testobj4.c testobj5.c \
  49                    testobj6.c testobj1_1.c failobj.c unloadmod.c \
  50                    ldconfig.h ldconfig.c cache.c readlib.c readelflib.c \
  51                    chroot_canon.c gccframe.h \
  52                    dep1.c dep2.c dep3.c dep4.c dl-dtprocnum.h unsecvars.h \
  53                    vismain.c vismod1.c vismod2.c vismod3.c \
  54                    constload2.c constload3.c filtmod1.c filtmod2.c \
  55                    nodlopenmod.c nodelete.c nodelmod1.c nodelmod2.c \
  56                    nodelmod3.c nodelmod4.c nodlopen.c dl-osinfo.h \
  57                    reldepmod1.c reldepmod2.c reldepmod3.c reldepmod4.c \
  58                    reldepmod5.c reldepmod6.c \
  59                    reldep4mod1.c reldep4mod2.c reldep4mod3.c reldep4mod4.c \
  60                    nextmod1.c nextmod2.c pathoptobj.c tst-pathopt.sh \
  61                    neededobj1.c neededobj2.c neededobj3.c neededobj4.c \
  62                    neededobj5.c neededobj6.c firstobj.c \
  63                    unload2mod.c unload2dep.c ltglobmod1.c ltglobmod2.c \
  64                    testobj.h vismod.h globalmod1.c \
  65                    dblloadmod1.c dblloadmod2.c dblloadmod3.c
  66
  67 include ../Makeconfig
  68
  69 ifeq ($(unwind-find-fde),yes)
  70 routines += unwind-dw2-fde
  71 shared-only-routines = unwind-dw2-fde
  72 endif
  73
  74 before-compile  = $(objpfx)trusted-dirs.h
  75 generated       := trusted-dirs.h trusted-dirs.st for-renamed/renamed.so
  76 generated-dirs  := for-renamed
  77
  78 ifeq ($(versioning),yes)
  79 ld-map          = $(common-objpfx)ld.map
  80 endif
  81
  82 ifeq (yes,$(build-shared))
  83 extra-objs      = $(all-rtld-routines:%=%.os) soinit.os sofini.os interp.os
  84 generated       += librtld.os dl-allobjs.os ld.so ldd
  85 install-others  = $(inst_slibdir)/$(rtld-installed-name)
  86 install-bin-script = ldd
  87 endif
  88
  89 others          = sprof sln
  90 install-bin     = sprof
  91 others-static   = sln
  92 install-rootsbin = sln
  93
  94 ifeq (yes,$(use-ldconfig))
  95 ifeq (yes,$(build-shared))
  96 others-static   += ldconfig
  97 others          += ldconfig
  98 install-rootsbin += ldconfig
  99
 100 ldconfig-modules := cache readlib xmalloc xstrdup chroot_canon
 101 extra-objs      += $(ldconfig-modules:=.o)
 102
 103 # To find xmalloc.c and xstrdup.c
 104 vpath %.c ../locale/programs
 105
 106 endif
 107 endif
 108
 109 ifeq (yes,$(build-shared))
 110 tests = loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
 111         constload1 order $(tests-vis-$(have-protected)) noload filter unload \
 112         reldep reldep2 reldep3 reldep4 $(tests-nodelete-$(have-z-nodelete)) \
 113         $(tests-nodlopen-$(have-z-nodlopen)) neededtest neededtest2 \
 114         neededtest3 neededtest4 unload2 lateglobal initfirst global \
 115         restest2 next dblload dblunload reldep5 reldep6
 116 test-srcs = tst-pathopt
 117 tests-vis-yes = vismain
 118 tests-nodelete-yes = nodelete
 119 tests-nodlopen-yes = nodlopen
 120 endif
 121 modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
 122                 testobj1_1 failobj constload2 constload3 unloadmod \
 123                 dep1 dep2 dep3 dep4 $(modules-vis-$(have-protected)) \
 124                 $(modules-nodelete-$(have-z-nodelete)) \
 125                 $(modules-nodlopen-$(have-z-nodlopen)) filtmod1 filtmod2 \
 126                 reldepmod1 reldepmod2 reldepmod3 reldepmod4 nextmod1 nextmod2 \
 127                 reldep4mod1 reldep4mod2 reldep4mod3 reldep4mod4 \
 128                 neededobj1 neededobj2 neededobj3 neededobj4 \
 129                 neededobj5 neededobj6 firstobj globalmod1 \
 130                 unload2mod unload2dep ltglobmod1 ltglobmod2 pathoptobj \
 131                 dblloadmod1 dblloadmod2 dblloadmod3 reldepmod5 reldepmod6 \
 132                 reldep6mod0 reldep6mod1 reldep6mod2 reldep6mod3 reldep6mod4
 133 modules-vis-yes = vismod1 vismod2 vismod3
 134 modules-nodelete-yes = nodelmod1 nodelmod2 nodelmod3 nodelmod4
 135 modules-nodlopen-yes = nodlopenmod
 136 extra-objs += $(addsuffix .os,$(strip $(modules-names)))
 137
 138 include ../Rules
 139
 140 ifeq (yes,$(build-shared))
 141 # Make sure these things are built in the `make lib' pass so they can be used
 142 # to run programs during the `make others' pass.
 143 lib-noranlib: $(objpfx)$(rtld-installed-name) \
 144               $(addprefix $(objpfx),$(extra-objs))
 145 endif
 146
 147 # Command to link into a larger single relocatable object.
 148 reloc-link = $(LINK.o) -nostdlib -nostartfiles -r -o $@
 149
 150 $(objpfx)dl-allobjs.os: $(all-rtld-routines:%=$(objpfx)%.os)
 151         $(reloc-link) $^
 152
 153 # Link together the dynamic linker into a single relocatable object.
 154 $(objpfx)librtld.os: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
 155         $(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
 156
 157 # Do we need a linker script?
 158 rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
 159
 160 ifneq (,$(rtld-ldscript-in))
 161 rtld-ldscript = $(objpfx)rtld-ldscript
 162 generated += rtld-ldscript
 163
 164 LDFLAGS-rtld = -T $(rtld-ldscript)
 165 before-compile += $(rtld-ldscript)
 166
 167 rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
 168 include $(rtld-parms)
 169
 170 $(rtld-ldscript): $(rtld-ldscript-in) $(rtld-parms)
 171         sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
 172             -e 's#@@rtld-arch@@#$(rtld-arch)#' \
 173             -e 's#@@rtld-entry@@#$(rtld-entry)#' \
 174             -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
 175 endif
 176
 177 $(objpfx)ld.so: $(objpfx)librtld.os $(rtld-ldscript) $(ld-map)
 178         $(LINK.o) -nostdlib -nostartfiles -shared -o $@ $(LDFLAGS-rtld) \
 179                   $(filter-out $(rtld-ldscript) $(map-file),$^)         \
 180                   $(load-map-file) -Wl,-soname=$(rtld-installed-name)
 181
 182 # interp.c exists just to get this string into the libraries.
 183 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"'
 184
 185 ifneq (ld.so,$(rtld-installed-name))
 186 # Make sure ld.so.1 exists in the build directory so we can link
 187 # against it.
 188 $(objpfx)$(rtld-installed-name): $(objpfx)ld.so
 189         rm -f $@
 190         ln -s $(<F) $@
 191 generated += $(rtld-installed-name)
 192 endif
 193
 194 # Build a file mentioning all trustworthy directories to look for shared
 195 # libraries when using LD_LIBRARY_PATH in a setuid program.  The user can
 196 # add directories to the list by defining $(user-defined-trusted-dirs)
 197 # before starting make.
 198 $(objpfx)trusted-dirs.h: $(objpfx)trusted-dirs.st; @:
 199 $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
 200         $(make-target-directory)
 201         echo "$(subst :, ,$(default-rpath) $(user-defined-trusted-dirs))"    \
 202         | $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
 203         $(move-if-change) ${@:st=T} ${@:st=h}
 204         touch $@
 205 CPPFLAGS-dl-load.c = -I$(objpfx). -I$(csu-objpfx).
 206
 207 ifeq (yes,$(build-shared))
 208 $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 209         $(make-target-directory)
 210         $(do-install-program)
 211
 212 $(inst_slibdir)/$(rtld-installed-name): \
 213   $(inst_slibdir)/$(rtld-version-installed-name) \
 214   $(inst_slibdir)/libc-$(version).so
 215         $(make-shlib-link)
 216
 217 # Special target called by parent to install just the dynamic linker.
 218 .PHONY: ldso_install
 219 ldso_install: $(inst_slibdir)/$(rtld-installed-name)
 220 endif
 221
 222
 223 common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
 224                      -e 's%@VERSION@%$(version)%g'
 225 sh-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%/bin/sh%g;s/\$$"/"/g'
 226 bash-ldd-rewrite = $(common-ldd-rewrite) -e 's%@BASH@%$(BASH)%g' \
 227                    -e 's%@TEXTDOMAINDIR@%$(msgcatdir)%g'
 228
 229 ifneq ($(have-bash2),yes)
 230 ldd-shell = sh
 231 else
 232 ldd-shell = bash
 233 endif
 234
 235 ifeq ($(ldd-rewrite-script),no)
 236 define gen-ldd
 237 sed $($(ldd-shell)-ldd-rewrite) < $< > $@.new
 238 endef
 239 else
 240 define gen-ldd
 241 sed $($(ldd-shell)-ldd-rewrite) < $< | sed -f $(ldd-rewrite-script) > $@.new
 242 endef
 243 endif
 244
 245 $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
 246               $(common-objpfx)config.make
 247         $(gen-ldd)
 248         chmod 555 $@.new
 249         mv -f $@.new $@
 250
 251 $(objpfx)sprof: $(libdl)
 252
 253 $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
 254 SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
 255 CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' -D'SLIBDIR="$(slibdir)"'
 256 CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
 257 CFLAGS-cache.c = $(SYSCONF-FLAGS)
 258
 259 test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names))))
 260 generated += $(addsuffix .so,$(strip $(modules-names)))
 261
 262 ifeq (yes,$(build-shared))
 263 ifeq ($(cross-compiling),no)
 264 tests: $(objpfx)tst-pathopt.out
 265 endif
 266 endif
 267
 268 $(objpfx)testobj1.so: $(libdl)
 269 $(objpfx)testobj1_1.so: $(objpfx)testobj1.so $(libdl)
 270 $(objpfx)testobj2.so: $(objpfx)testobj1.so $(libdl)
 271 $(objpfx)testobj3.so: $(libdl)
 272 $(objpfx)testobj4.so: $(libdl)
 273 $(objpfx)testobj5.so: $(libdl)
 274 $(objpfx)testobj6.so: $(objpfx)testobj1.so $(objpfx)testobj2.so $(libdl)
 275 $(objpfx)failobj.so: $(objpfx)testobj6.so
 276 $(objpfx)dep1.so: $(objpfx)dep2.so $(objpfx)dep4.so
 277 $(objpfx)dep2.so: $(objpfx)dep3.so $(objpfx)dep4.so
 278 $(objpfx)dep4.so: $(objpfx)dep3.so
 279 $(objpfx)nodelmod3.so: $(objpfx)nodelmod4.so
 280 $(objpfx)nextmod1.so: $(libdl)
 281 $(objpfx)neededobj1.so: $(libdl)
 282 $(objpfx)neededobj2.so: $(objpfx)neededobj1.so $(libdl)
 283 $(objpfx)neededobj3.so: $(objpfx)neededobj1.so $(objpfx)neededobj2.so $(libdl)
 284 $(objpfx)neededobj4.so: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 285                         $(objpfx)neededobj3.so $(libdl)
 286 $(objpfx)neededobj6.so: $(objpfx)neededobj5.so
 287 $(objpfx)unload2mod.so: $(objpfx)unload2dep.so
 288 $(objpfx)ltglobmod2.so: $(libdl)
 289 $(objpfx)firstobj.so: $(shared-thread-library)
 290 $(objpfx)globalmod1.so: $(libdl)
 291 $(objpfx)reldep4mod1.so: $(objpfx)reldep4mod3.so
 292 $(objpfx)reldep4mod2.so: $(objpfx)reldep4mod4.so
 293 $(objpfx)dblloadmod1.so: $(objpfx)dblloadmod3.so
 294 $(objpfx)dblloadmod2.so: $(objpfx)dblloadmod3.so
 295 $(objpfx)reldepmod5.so: $(objpfx)reldepmod2.so
 296 $(objpfx)reldepmod6.so: $(objpfx)reldepmod2.so
 297 $(objpfx)reldep6mod1.so: $(objpfx)reldep6mod0.so
 298 $(objpfx)reldep6mod2.so: $(objpfx)reldep6mod1.so
 299 $(objpfx)reldep6mod3.so: $(objpfx)reldep6mod2.so
 300 $(objpfx)reldep6mod4.so: $(objpfx)reldep6mod1.so
 301
 302 # filtmod1.so has a special rule
 303 $(filter-out $(objpfx)filtmod1.so, $(test-modules)): $(objpfx)%.so: $(objpfx)%.os
 304         $(build-module)
 305
 306 $(objpfx)loadtest: $(libdl)
 307 LDFLAGS-loadtest = -rdynamic
 308
 309 $(objpfx)loadtest.out: $(test-modules)
 310
 311 $(objpfx)neededtest: $(libdl)
 312 $(objpfx)neededtest.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 313                          $(objpfx)neededobj3.so
 314
 315 $(objpfx)neededtest2: $(libdl)
 316 $(objpfx)neededtest2.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 317                           $(objpfx)neededobj3.so
 318
 319 $(objpfx)neededtest3: $(libdl)
 320 $(objpfx)neededtest3.out: $(objpfx)neededobj1.so $(objpfx)neededobj2.so \
 321                           $(objpfx)neededobj3.so $(objpfx)neededobj4.so
 322
 323 neededtest4-ENV = LC_ALL=C LANGUAGE=C
 324 $(objpfx)neededtest4: $(libdl) $(objpfx)neededobj1.so
 325 $(objpfx)neededtest4.out: $(objpfx)neededobj5.so $(objpfx)neededobj6.so
 326
 327 $(objpfx)restest1: $(objpfx)testobj1.so $(objpfx)testobj1_1.so $(libdl)
 328 LDFLAGS-restest1 = -rdynamic
 329
 330 $(objpfx)restest2: $(libdl)
 331 LDFLAGS-restest2 = -rdynamic
 332
 333 $(objpfx)restest1.out: $(test-modules)
 334
 335 preloadtest-preloads = testobj1 testobj2 testobj3 testobj4 testobj5
 336 $(objpfx)preloadtest: $(objpfx)testobj6.so
 337 LDFLAGS-preloadtest = -rdynamic
 338 $(objpfx)preloadtest.out: $(preloadtest-preloads:%=$(objpfx)%.so)
 339 preloadtest-ENV = \
 340   LD_PRELOAD=$(subst $(empty) ,:,$(strip $(preloadtest-preloads:=.so)))
 341
 342 $(objpfx)loadfail: $(libdl)
 343 LDFLAGS-loadfail = -rdynamic
 344
 345 $(objpfx)loadfail.out: $(objpfx)failobj.so
 346
 347 $(objpfx)multiload: $(libdl)
 348 LDFLAGS-multiload = -rdynamic
 349 CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
 350
 351 $(objpfx)multiload.out: $(objpfx)testobj1.so
 352
 353 $(objpfx)origtest: $(libdl)
 354 LDFLAGS-origtest = -rdynamic
 355 $(objpfx)origtest.out: $(objpfx)testobj1.so
 356
 357 ifeq ($(have-thread-library),yes)
 358 $(objpfx)resolvfail: $(libdl) $(shared-thread-library)
 359 else
 360 $(objpfx)resolvfail: $(libdl)
 361 endif
 362
 363 $(objpfx)constload1: $(libdl)
 364 $(objpfx)constload1.out: $(objpfx)constload2.so $(objpfx)constload3.so
 365
 366 $(objpfx)order: $(addprefix $(objpfx),dep4.so dep3.so dep2.so dep1.so)
 367
 368 $(objpfx)order.out: $(objpfx)order
 369         $(elf-objpfx)$(rtld-installed-name) \
 370           --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
 371           $(objpfx)order > $@
 372         (echo "0123456789" | cmp $@ -) > /dev/null
 373
 374 $(objpfx)vismain: $(addprefix $(objpfx),vismod1.so vismod2.so)
 375 $(objpfx)vismain.out: $(addprefix $(objpfx),vismod3.so)
 376 vismain-ENV = LD_PRELOAD=$(addprefix $(objpfx),vismod3.so)
 377
 378 $(objpfx)noload: $(objpfx)testobj1.so
 379 LDFLAGS-noload = -rdynamic
 380 $(objpfx)noload.out: $(objpfx)testobj5.so
 381
 382 LDFLAGS-nodelete = -rdynamic
 383 LDFLAGS-nodelmod1.so = -Wl,--enable-new-dtags,-z,nodelete
 384 LDFLAGS-nodelmod4.so = -Wl,--enable-new-dtags,-z,nodelete
 385 $(objpfx)nodelete: $(libdl)
 386 $(objpfx)nodelete.out: $(objpfx)nodelmod1.so $(objpfx)nodelmod2.so \
 387                        $(objpfx)nodelmod3.so
 388
 389 LDFLAGS-nodlopenmod.so = -Wl,--enable-new-dtags,-z,nodlopen
 390 $(objpfx)nodlopen: $(libdl)
 391 $(objpfx)nodlopen.out: $(objpfx)nodlopenmod.so
 392
 393 $(objpfx)filtmod1.so: $(objpfx)filtmod1.os $(objpfx)filtmod2.so
 394         $(LINK.o) -shared -o $@ -B$(csu-objpfx) $(LDFLAGS.so) \
 395                   -L$(subst :, -L,$(rpath-link)) \
 396                   -Wl,-rpath-link=$(rpath-link) \
 397                   $< -Wl,-F,$(objpfx)filtmod2.so
 398 $(objpfx)filter: $(objpfx)filtmod1.so
 399
 400 $(objpfx)unload: $(libdl)
 401 $(objpfx)unload.out: $(objpfx)unloadmod.so
 402
 403 $(objpfx)reldep: $(libdl)
 404 $(objpfx)reldep.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod2.so
 405
 406 $(objpfx)reldep2: $(libdl)
 407 $(objpfx)reldep2.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod3.so
 408
 409 $(objpfx)reldep3: $(libdl)
 410 $(objpfx)reldep3.out: $(objpfx)reldepmod1.so $(objpfx)reldepmod4.so
 411
 412 $(objpfx)reldep4: $(libdl)
 413 $(objpfx)reldep4.out: $(objpfx)reldep4mod1.so $(objpfx)reldep4mod2.so
 414
 415 $(objpfx)next: $(objpfx)nextmod1.so $(objpfx)nextmod2.so $(libdl)
 416
 417 $(objpfx)unload2: $(libdl)
 418 $(objpfx)unload2.out: $(objpfx)unload2mod.so $(objpfx)unload2dep.so
 419
 420 $(objpfx)lateglobal: $(libdl)
 421 $(objpfx)lateglobal.out: $(objpfx)ltglobmod1.so $(objpfx)ltglobmod2.so
 422
 423 $(objpfx)tst-pathopt: $(libdl)
 424 $(objpfx)tst-pathopt.out: tst-pathopt.sh $(objpfx)tst-pathopt \
 425                           $(objpfx)pathoptobj.so
 426         $(SHELL) -e $< $(common-objpfx)
 427
 428 $(objpfx)initfirst: $(libdl)
 429 $(objpfx)initfirst.out: $(objpfx)firstobj.so
 430
 431 $(objpfx)global: $(objpfx)globalmod1.so
 432 $(objpfx)global.out: $(objpfx)reldepmod1.so
 433
 434 $(objpfx)dblload: $(libdl)
 435 $(objpfx)dblload.out: $(objpfx)dblloadmod1.so $(objpfx)dblloadmod2.so
 436
 437 $(objpfx)dblunload: $(libdl)
 438 $(objpfx)dblunload.out: $(objpfx)dblloadmod1.so $(objpfx)dblloadmod2.so
 439
 440 $(objpfx)reldep5: $(libdl)
 441 $(objpfx)reldep5.out: $(objpfx)reldepmod5.so $(objpfx)reldepmod5.so
 442
 443 $(objpfx)reldep6: $(libdl)
 444 $(objpfx)reldep6.out: $(objpfx)reldep6mod3.so $(objpfx)reldep6mod4.so