config-ml.in

   1 # Configure fragment invoked in the post-target section for subdirs
   2 # wanting multilib support.
   3 #
   4 # It is advisable to support a few --enable/--disable options to let the
   5 # user select which libraries s/he really wants.
   6 #
   7 # Subdirectories wishing to use multilib should put the following lines
   8 # in the "post-target" section of configure.in.
   9 #
  10 # if [ "${srcdir}" = "." ] ; then
  11 #   if [ "${with_target_subdir}" != "." ] ; then
  12 #     . ${with_multisrctop}../../config-ml.in
  13 #   else
  14 #     . ${with_multisrctop}../config-ml.in
  15 #   fi
  16 # else
  17 #   . ${srcdir}/../config-ml.in
  18 # fi
  19 #
  20 # See librx/configure.in in the libg++ distribution for an example of how
  21 # to handle autoconf'd libraries.
  22 #
  23 # Things are complicated because 6 separate cases must be handled:
  24 # 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
  25 #
  26 # srcdir=. is special.  It must handle make programs that don't handle VPATH.
  27 # To implement this, a symlink tree is built for each library and for each
  28 # multilib subdir.
  29 #
  30 # The build tree is layed out as
  31 #
  32 # ./
  33 #   libg++
  34 #   newlib
  35 #   m68020/
  36 #          libg++
  37 #          newlib
  38 #          m68881/
  39 #                 libg++
  40 #                 newlib
  41 #
  42 # The nice feature about this arrangement is that inter-library references
  43 # in the build tree work without having to care where you are.  Note that
  44 # inter-library references also work in the source tree because symlink trees
  45 # are built when srcdir=.
  46 #
  47 # Unfortunately, trying to access the libraries in the build tree requires
  48 # the user to manually choose which library to use as GCC won't be able to
  49 # find the right one.  This is viewed as the lesser of two evils.
  50 #
  51 # Configure variables:
  52 # ${with_target_subdir} = "." for native, or ${target_alias} for cross.
  53 # Set by top level Makefile.
  54 # ${with_multisrctop} = how many levels of multilibs there are in the source
  55 # tree.  It exists to handle the case of configuring in the source tree:
  56 # ${srcdir} is not constant.
  57 # ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
  58 #
  59 # Makefile variables:
  60 # MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
  61 # (FIXME: note that this is different than ${with_multisrctop}.  Check out.).
  62 # MULTIBUILDTOP = number of multilib levels in build tree
  63 # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
  64 # (only defined in each library's main Makefile).
  65 # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
  66 # (only defined in each multilib subdir).
  67
  68 # FIXME: Multilib is currently disabled by default for everything other than
  69 # newlib.  It is up to each target to turn on multilib support for the other
  70 # libraries as desired.
  71
  72 # We have to handle being invoked by both Cygnus configure and Autoconf.
  73 #
  74 # Cygnus configure incoming variables:
  75 # srcdir, subdir, target, arguments
  76 #
  77 # Autoconf incoming variables:
  78 # srcdir, target, ac_configure_args
  79 #
  80 # We *could* figure srcdir and target out, but we'd have to do work that
  81 # our caller has already done to figure them out and requiring these two
  82 # seems reasonable.
  83
  84 if [ -n "${ac_configure_args}" ]; then
  85   Makefile=${ac_file-Makefile}
  86   ml_config_shell=${CONFIG_SHELL-/bin/sh}
  87   ml_arguments="${ac_configure_args}"
  88   ml_realsrcdir=${srcdir}
  89 else
  90   Makefile=${Makefile-Makefile}
  91   ml_config_shell=${config_shell-/bin/sh}
  92   ml_arguments="${arguments}"
  93   if [ -n "${subdir}" -a "${subdir}" != "." ] ; then
  94     ml_realsrcdir=${srcdir}/${subdir}
  95   else
  96     ml_realsrcdir=${srcdir}
  97   fi
  98 fi
  99
 100 # Scan all the arguments and set all the ones we need.
 101
 102 for option in ${ml_arguments}
 103 do
 104   case $option in
 105   --*) ;;
 106   -*) option=-$option ;;
 107   esac
 108
 109   case $option in
 110   --*=*)
 111         optarg=`echo $option | sed -e 's/^[^=]*=//'`
 112         ;;
 113   esac
 114
 115   case $option in
 116   --disable-*)
 117         enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
 118         eval $enableopt=no
 119         ;;
 120   --enable-*)
 121         case "$option" in
 122         *=*)    ;;
 123         *)      optarg=yes ;;
 124         esac
 125         enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 126         eval $enableopt="$optarg"
 127         ;;
 128   --norecursion | --no*)
 129         ml_norecursion=yes
 130         ;;
 131   --verbose | --v | --verb*)
 132         ml_verbose=--verbose
 133         ;;
 134   --with-*)
 135         case "$option" in
 136         *=*)    ;;
 137         *)      optarg=yes ;;
 138         esac
 139         withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 140         eval $withopt="$optarg"
 141         ;;
 142   --without-*)
 143         withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
 144         eval $withopt=no
 145         ;;
 146   esac
 147 done
 148
 149 # Only do this if --enable-multilib.
 150 if [ "${enable_multilib}" = yes ]; then
 151
 152 # Compute whether this is the library's top level directory
 153 # (ie: not a multilib subdirectory, and not a subdirectory like libg++/src).
 154 # ${with_multisubdir} tells us we're in the right branch, but we could be
 155 # in a subdir of that.
 156 # ??? The previous version could void this test by separating the process into
 157 # two files: one that only the library's toplevel configure.in ran (to
 158 # configure the multilib subdirs), and another that all configure.in's ran to
 159 # update the Makefile.  It seemed reasonable to collapse all multilib support
 160 # into one file, but it does leave us with having to perform this test.
 161 ml_toplevel_p=no
 162 if [ -z "${with_multisubdir}" ]; then
 163   if [ "${srcdir}" = "." ]; then
 164     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 165     # ${with_target_subdir} = "." for native, otherwise target alias.
 166     if [ "${with_target_subdir}" = "." ]; then
 167       if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 168         ml_toplevel_p=yes
 169       fi
 170     else
 171       if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
 172         ml_toplevel_p=yes
 173       fi
 174     fi
 175   else
 176     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 177     if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 178       ml_toplevel_p=yes
 179     fi
 180   fi
 181 fi
 182
 183 # If this is the library's top level directory, set multidirs to the
 184 # multilib subdirs to support.  This lives at the top because we need
 185 # `multidirs' set right away.
 186
 187 if [ "${ml_toplevel_p}" = yes ]; then
 188
 189 multidirs=
 190 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 191   dir=`echo $i | sed -e 's/;.*$//'`
 192   if [ "${dir}" = "." ]; then
 193     true
 194   else
 195     if [ -z "${multidirs}" ]; then
 196       multidirs="${dir}"
 197     else
 198       multidirs="${multidirs} ${dir}"
 199     fi
 200   fi
 201 done
 202
 203 case "${target}" in
 204 # start-sanitize-arc
 205 arc-sbp-elf*)
 206         if [ x$enable_biendian != xyes ]
 207         then
 208           old_multidirs=${multidirs}
 209           multidirs=
 210           for x in ${old_multidirs}; do
 211             case "${x}" in
 212               *be*) ;;
 213               *) if [ x"$multidirs" = x ]; then
 214                    multidirs="$x";
 215                  else
 216                    multidirs="${multidirs} ${x}";
 217                  fi
 218                  ;;
 219             esac
 220           done
 221         fi
 222         ;;
 223 # end-sanitize-arc
 224 mips*-*-*)
 225         if [ x$enable_single_float = xno ]
 226         then
 227           old_multidirs="${multidirs}"
 228           multidirs=""
 229           for x in ${old_multidirs}; do
 230             case "$x" in
 231               *single* ) : ;;
 232               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 233             esac
 234           done
 235         fi
 236         if [ x$enable_biendian = xno ]
 237         then
 238           old_multidirs="${multidirs}"
 239           multidirs=""
 240           for x in ${old_multidirs}; do
 241             case "$x" in
 242               *el* ) : ;;
 243               *eb* ) : ;;
 244               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 245             esac
 246           done
 247         fi
 248         if [ x$enable_softfloat = xno ]
 249         then
 250           old_multidirs="${multidirs}"
 251           multidirs=""
 252           for x in ${old_multidirs}; do
 253             case "$x" in
 254               *soft-float* ) : ;;
 255               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 256             esac
 257           done
 258         fi
 259         ;;
 260 powerpc*-*-* | rs6000*-*-*)
 261         if [ x$enable_softfloat = xno ]
 262         then
 263           old_multidirs="${multidirs}"
 264           multidirs=""
 265           for x in ${old_multidirs}; do
 266             case "$x" in
 267               *soft-float* ) : ;;
 268               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 269             esac
 270           done
 271         fi
 272         if [ x$enable_commoncpu = xno ]
 273         then
 274           old_multidirs="${multidirs}"
 275           multidirs=""
 276           for x in ${old_multidirs}; do
 277             case "$x" in
 278               *common* ) : ;;
 279               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 280             esac
 281           done
 282         fi
 283         if [ x$enable_powercpu = xno ]
 284         then
 285           old_multidirs="${multidirs}"
 286           multidirs=""
 287           for x in ${old_multidirs}; do
 288             case "$x" in
 289               power | */power | */power/* ) : ;;
 290               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 291             esac
 292           done
 293         fi
 294         if [ x$enable_power2cpu = xno ]
 295         then
 296           old_multidirs="${multidirs}"
 297           multidirs=""
 298           for x in ${old_multidirs}; do
 299             case "$x" in
 300               *power2* ) : ;;
 301               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 302             esac
 303           done
 304         fi
 305         if [ x$enable_powerpccpu = xno ]
 306         then
 307           old_multidirs="${multidirs}"
 308           multidirs=""
 309           for x in ${old_multidirs}; do
 310             case "$x" in
 311               *powerpc* ) : ;;
 312               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 313             esac
 314           done
 315         fi
 316         if [ x$enable_601cpu = xno ]
 317         then
 318           old_multidirs="${multidirs}"
 319           multidirs=""
 320           for x in ${old_multidirs}; do
 321             case "$x" in
 322               *601* ) : ;;
 323               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 324             esac
 325           done
 326         fi
 327         if [ x$enable_biendian = xno ]
 328         then
 329           old_multidirs="${multidirs}"
 330           multidirs=""
 331           for x in ${old_multidirs}; do
 332             case "$x" in
 333               *endian* ) : ;;
 334               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 335             esac
 336           done
 337         fi
 338         if [ x$enable_relocatable = xno ]
 339         then
 340           old_multidirs="${multidirs}"
 341           multidirs=""
 342           for x in ${old_multidirs}; do
 343             case "$x" in
 344               *relocatable* ) : ;;
 345               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 346             esac
 347           done
 348         fi
 349         if [ x$enable_sysv = xno ]
 350         then
 351           old_multidirs="${multidirs}"
 352           multidirs=""
 353           for x in ${old_multidirs}; do
 354             case "$x" in
 355               *sysv* ) : ;;
 356               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 357             esac
 358           done
 359         fi
 360         if [ x$enable_aix = xno ]
 361         then
 362           old_multidirs="${multidirs}"
 363           multidirs=""
 364           for x in ${old_multidirs}; do
 365             case "$x" in
 366               *aix* ) : ;;
 367               *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
 368             esac
 369           done
 370         fi
 371         ;;
 372 esac
 373
 374 # Add code to library's top level makefile to handle building the multilib
 375 # subdirs.
 376
 377 cat > Multi.tem <<\EOF
 378
 379 # FIXME: There should be an @-sign in front of the `if'.
 380 # Leave out until this is tested a bit more.
 381 multi-do:
 382         if [ -z "$(MULTIDIRS)" ]; then \
 383           true; \
 384         else \
 385           rootpre=`pwd`/; export rootpre; \
 386           srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
 387           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 388           compiler="$(CC)"; \
 389           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
 390             dir=`echo $$i | sed -e 's/;.*$$//'`; \
 391             if [ "$${dir}" = "." ]; then \
 392               true; \
 393             else \
 394               if [ -d ../$${dir}/$${lib} ]; then \
 395                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
 396                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
 397                                 CFLAGS="$(CFLAGS) $${flags}" \
 398                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 399                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 400                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 401                                 $(DO)); then \
 402                   true; \
 403                 else \
 404                   exit 1; \
 405                 fi; \
 406               else true; \
 407               fi; \
 408             fi; \
 409           done; \
 410         fi
 411
 412 # FIXME: There should be an @-sign in front of the `if'.
 413 # Leave out until this is tested a bit more.
 414 multi-clean:
 415         if [ -z "$(MULTIDIRS)" ]; then \
 416           true; \
 417         else \
 418           lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
 419           for dir in Makefile $(MULTIDIRS); do \
 420             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 421               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 422               then true; \
 423               else exit 1; \
 424               fi; \
 425             else true; \
 426             fi; \
 427           done; \
 428         fi
 429 EOF
 430
 431 cat ${Makefile} Multi.tem > Makefile.tem
 432 rm -f ${Makefile} Multi.tem
 433 mv Makefile.tem ${Makefile}
 434
 435 fi # ${ml_toplevel_p} = yes
 436
 437 if [ "${ml_verbose}" = --verbose ]; then
 438   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
 439   if [ "${ml_toplevel_p}" = yes ]; then
 440     echo "multidirs=${multidirs}"
 441   fi
 442   echo "with_multisubdir=${with_multisubdir}"
 443 fi
 444
 445 if [ "${srcdir}" = "." ]; then
 446   if [ "${with_target_subdir}" != "." ]; then
 447     ml_srcdotdot="../"
 448   else
 449     ml_srcdotdot=""
 450   fi
 451 else
 452   ml_srcdotdot=""
 453 fi
 454
 455 if [ -z "${with_multisubdir}" ]; then
 456   ml_subdir=
 457   ml_builddotdot=
 458   : # ml_srcdotdot= # already set
 459 else
 460   ml_subdir="/${with_multisubdir}"
 461   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 462   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 463   if [ "$srcdir" = "." ]; then
 464     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 465   else
 466     : # ml_srcdotdot= # already set
 467   fi
 468 fi
 469
 470 if [ "${ml_toplevel_p}" = yes ]; then
 471   ml_do='$(MAKE)'
 472   ml_clean='$(MAKE)'
 473 else
 474   ml_do=true
 475   ml_clean=true
 476 fi
 477
 478 # TOP is used by newlib and should not be used elsewhere for this purpose.
 479 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 480 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 481 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 482 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 483 # of course.
 484 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 485 # and lists the subdirectories to recurse into.
 486 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 487 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 488 # a leading '/'.
 489 # MULTIDO is used for targets like all, install, and check where
 490 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 491 # MULTICLEAN is used for the *clean targets.
 492 #
 493 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 494 # currently kept separate because we don't want the *clean targets to require
 495 # the existence of the compiler (which MULTIDO currently requires) and
 496 # therefore we'd have to record the directory options as well as names
 497 # (currently we just record the names and use --print-multi-lib to get the
 498 # options).
 499
 500 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 501     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 502     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 503     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 504     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 505     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 506     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 507         ${Makefile} > Makefile.tem
 508 rm -f ${Makefile}
 509 mv Makefile.tem ${Makefile}
 510
 511 # If this is the library's top level, configure each multilib subdir.
 512 # This is done at the end because this is the loop that runs configure
 513 # in each multilib subdir and it seemed reasonable to finish updating the
 514 # Makefile before going on to configure the subdirs.
 515
 516 if [ "${ml_toplevel_p}" = yes ]; then
 517
 518 # We must freshly configure each subdirectory.  This bit of code is
 519 # actually partially stolen from the main configure script.  FIXME.
 520
 521 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 522
 523   if [ "${ml_verbose}" = --verbose ]; then
 524     echo "Running configure in multilib subdirs ${multidirs}"
 525     echo "pwd: `pwd`"
 526   fi
 527
 528   ml_origdir=`pwd`
 529   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 530   # cd to top-level-build-dir/${with_target_subdir}
 531   cd ..
 532
 533   for ml_dir in ${multidirs}; do
 534
 535     if [ "${ml_verbose}" = --verbose ]; then
 536       echo "Running configure in multilib subdir ${ml_dir}"
 537       echo "pwd: `pwd`"
 538     fi
 539
 540     if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
 541     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 542
 543     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 544     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 545
 546     case ${srcdir} in
 547     ".")
 548       echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
 549       if [ "${with_target_subdir}" != "." ]; then
 550         ml_unsubdir="../"
 551       else
 552         ml_unsubdir=""
 553       fi
 554       (cd ${ml_dir}/${ml_libdir};
 555        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 556       ml_newsrcdir="."
 557       ml_srcdiroption=
 558       multisrctop=${dotdot}
 559       ;;
 560     *)
 561       case "${srcdir}" in
 562       /*) # absolute path
 563         ml_newsrcdir=${srcdir}
 564         ;;
 565       *) # otherwise relative
 566         ml_newsrcdir=${dotdot}${srcdir}
 567         ;;
 568       esac
 569       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 570       multisrctop=
 571       ;;
 572     esac
 573
 574     case "${progname}" in
 575     /*)     ml_recprog=${progname} ;;
 576     *)      ml_recprog=${dotdot}${progname} ;;
 577     esac
 578
 579     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 580     ML_POPDIR=`pwd`
 581     cd ${ml_dir}/${ml_libdir}
 582
 583     if [ -f ${ml_newsrcdir}/configure ]; then
 584       ml_recprog=${ml_newsrcdir}/configure
 585     fi
 586     if eval ${ml_config_shell} ${ml_recprog} \
 587         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 588         ${ml_arguments} ${ml_srcdiroption} ; then
 589       true
 590     else
 591       exit 1
 592     fi
 593
 594     cd ${ML_POPDIR}
 595
 596   done
 597
 598   cd ${ml_origdir}
 599 fi
 600
 601 fi # ${ml_toplevel_p} = yes
 602 fi # ${enable_multilib} = yes