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