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 arc-*-elf*)
 205         if [ x$enable_biendian != xyes ]
 206         then
 207           old_multidirs=${multidirs}
 208           multidirs=""
 209           for x in ${old_multidirs}; do
 210             case "${x}" in
 211               *be*) : ;;
 212               *) multidirs="${multidirs} ${x}" ;;
 213             esac
 214           done
 215         fi
 216         ;;
 217 m68*-*-*)
 218         if [ x$enable_softfloat = xno ]
 219         then
 220           old_multidirs="${multidirs}"
 221           multidirs=""
 222           for x in ${old_multidirs}; do
 223             case "$x" in
 224               *soft-float* ) : ;;
 225               *) multidirs="${multidirs} ${x}" ;;
 226             esac
 227           done
 228         fi
 229         if [ x$enable_m68881 = xno ]
 230         then
 231           old_multidirs="${multidirs}"
 232           multidirs=""
 233           for x in ${old_multidirs}; do
 234             case "$x" in
 235               *m68881* ) : ;;
 236               *) multidirs="${multidirs} ${x}" ;;
 237             esac
 238           done
 239         fi
 240         if [ x$enable_m68000 = xno ]
 241         then
 242           old_multidirs="${multidirs}"
 243           multidirs=""
 244           for x in ${old_multidirs}; do
 245             case "$x" in
 246               *m68000* ) : ;;
 247               *) multidirs="${multidirs} ${x}" ;;
 248             esac
 249           done
 250         fi
 251         if [ x$enable_m68020 = xno ]
 252         then
 253           old_multidirs="${multidirs}"
 254           multidirs=""
 255           for x in ${old_multidirs}; do
 256             case "$x" in
 257               *m68020* ) : ;;
 258               *) multidirs="${multidirs} ${x}" ;;
 259             esac
 260           done
 261         fi
 262         ;;
 263 mips*-*-*)
 264         if [ x$enable_single_float = xno ]
 265         then
 266           old_multidirs="${multidirs}"
 267           multidirs=""
 268           for x in ${old_multidirs}; do
 269             case "$x" in
 270               *single* ) : ;;
 271               *) multidirs="${multidirs} ${x}" ;;
 272             esac
 273           done
 274         fi
 275         if [ x$enable_biendian = xno ]
 276         then
 277           old_multidirs="${multidirs}"
 278           multidirs=""
 279           for x in ${old_multidirs}; do
 280             case "$x" in
 281               *el* ) : ;;
 282               *eb* ) : ;;
 283               *) multidirs="${multidirs} ${x}" ;;
 284             esac
 285           done
 286         fi
 287         if [ x$enable_softfloat = xno ]
 288         then
 289           old_multidirs="${multidirs}"
 290           multidirs=""
 291           for x in ${old_multidirs}; do
 292             case "$x" in
 293               *soft-float* ) : ;;
 294               *) multidirs="${multidirs} ${x}" ;;
 295             esac
 296           done
 297         fi
 298         ;;
 299 powerpc*-*-* | rs6000*-*-*)
 300         if [ x$enable_softfloat = xno ]
 301         then
 302           old_multidirs="${multidirs}"
 303           multidirs=""
 304           for x in ${old_multidirs}; do
 305             case "$x" in
 306               *soft-float* ) : ;;
 307               *) multidirs="${multidirs} ${x}" ;;
 308             esac
 309           done
 310         fi
 311         if [ x$enable_powercpu = xno ]
 312         then
 313           old_multidirs="${multidirs}"
 314           multidirs=""
 315           for x in ${old_multidirs}; do
 316             case "$x" in
 317               power | */power | */power/* ) : ;;
 318               *) multidirs="${multidirs} ${x}" ;;
 319             esac
 320           done
 321         fi
 322         if [ x$enable_powerpccpu = xno ]
 323         then
 324           old_multidirs="${multidirs}"
 325           multidirs=""
 326           for x in ${old_multidirs}; do
 327             case "$x" in
 328               *powerpc* ) : ;;
 329               *) multidirs="${multidirs} ${x}" ;;
 330             esac
 331           done
 332         fi
 333         if [ x$enable_powerpcos = xno ]
 334         then
 335           old_multidirs="${multidirs}"
 336           multidirs=""
 337           for x in ${old_multidirs}; do
 338             case "$x" in
 339               *mcall-linux* | *mcall-solaris* ) : ;;
 340               *) multidirs="${multidirs} ${x}" ;;
 341             esac
 342           done
 343         fi
 344         if [ x$enable_biendian = xno ]
 345         then
 346           old_multidirs="${multidirs}"
 347           multidirs=""
 348           for x in ${old_multidirs}; do
 349             case "$x" in
 350               *mlittle* | *mbig* ) : ;;
 351               *) multidirs="${multidirs} ${x}" ;;
 352             esac
 353           done
 354         fi
 355         if [ x$enable_sysv = xno ]
 356         then
 357           old_multidirs="${multidirs}"
 358           multidirs=""
 359           for x in ${old_multidirs}; do
 360             case "$x" in
 361               *mcall-sysv* ) : ;;
 362               *) multidirs="${multidirs} ${x}" ;;
 363             esac
 364           done
 365         fi
 366         if [ x$enable_aix = xno ]
 367         then
 368           old_multidirs="${multidirs}"
 369           multidirs=""
 370           for x in ${old_multidirs}; do
 371             case "$x" in
 372               *mcall-aix* ) : ;;
 373               *) multidirs="${multidirs} ${x}" ;;
 374             esac
 375           done
 376         fi
 377         ;;
 378 esac
 379
 380 # Remove extraneous blanks from multidirs.
 381 # Tests like `if [ -n "$multidirs" ]' require it.
 382 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
 383
 384 # Add code to library's top level makefile to handle building the multilib
 385 # subdirs.
 386
 387 cat > Multi.tem <<\EOF
 388
 389 # FIXME: There should be an @-sign in front of the `if'.
 390 # Leave out until this is tested a bit more.
 391 multi-do:
 392         if [ -z "$(MULTIDIRS)" ]; then \
 393           true; \
 394         else \
 395           rootpre=`pwd`/; export rootpre; \
 396           srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
 397           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 398           compiler="$(CC)"; \
 399           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
 400             dir=`echo $$i | sed -e 's/;.*$$//'`; \
 401             if [ "$${dir}" = "." ]; then \
 402               true; \
 403             else \
 404               if [ -d ../$${dir}/$${lib} ]; then \
 405                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
 406                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
 407                                 CFLAGS="$(CFLAGS) $${flags}" \
 408                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 409                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 410                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 411                                 $(DO)); then \
 412                   true; \
 413                 else \
 414                   exit 1; \
 415                 fi; \
 416               else true; \
 417               fi; \
 418             fi; \
 419           done; \
 420         fi
 421
 422 # FIXME: There should be an @-sign in front of the `if'.
 423 # Leave out until this is tested a bit more.
 424 multi-clean:
 425         if [ -z "$(MULTIDIRS)" ]; then \
 426           true; \
 427         else \
 428           lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
 429           for dir in Makefile $(MULTIDIRS); do \
 430             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 431               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 432               then true; \
 433               else exit 1; \
 434               fi; \
 435             else true; \
 436             fi; \
 437           done; \
 438         fi
 439 EOF
 440
 441 cat ${Makefile} Multi.tem > Makefile.tem
 442 rm -f ${Makefile} Multi.tem
 443 mv Makefile.tem ${Makefile}
 444
 445 fi # ${ml_toplevel_p} = yes
 446
 447 if [ "${ml_verbose}" = --verbose ]; then
 448   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
 449   if [ "${ml_toplevel_p}" = yes ]; then
 450     echo "multidirs=${multidirs}"
 451   fi
 452   echo "with_multisubdir=${with_multisubdir}"
 453 fi
 454
 455 if [ "${srcdir}" = "." ]; then
 456   if [ "${with_target_subdir}" != "." ]; then
 457     ml_srcdotdot="../"
 458   else
 459     ml_srcdotdot=""
 460   fi
 461 else
 462   ml_srcdotdot=""
 463 fi
 464
 465 if [ -z "${with_multisubdir}" ]; then
 466   ml_subdir=
 467   ml_builddotdot=
 468   : # ml_srcdotdot= # already set
 469 else
 470   ml_subdir="/${with_multisubdir}"
 471   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 472   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 473   if [ "$srcdir" = "." ]; then
 474     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 475   else
 476     : # ml_srcdotdot= # already set
 477   fi
 478 fi
 479
 480 if [ "${ml_toplevel_p}" = yes ]; then
 481   ml_do='$(MAKE)'
 482   ml_clean='$(MAKE)'
 483 else
 484   ml_do=true
 485   ml_clean=true
 486 fi
 487
 488 # TOP is used by newlib and should not be used elsewhere for this purpose.
 489 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 490 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 491 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 492 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 493 # of course.
 494 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 495 # and lists the subdirectories to recurse into.
 496 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 497 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 498 # a leading '/'.
 499 # MULTIDO is used for targets like all, install, and check where
 500 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 501 # MULTICLEAN is used for the *clean targets.
 502 #
 503 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 504 # currently kept separate because we don't want the *clean targets to require
 505 # the existence of the compiler (which MULTIDO currently requires) and
 506 # therefore we'd have to record the directory options as well as names
 507 # (currently we just record the names and use --print-multi-lib to get the
 508 # options).
 509
 510 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 511     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 512     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 513     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 514     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 515     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 516     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 517         ${Makefile} > Makefile.tem
 518 rm -f ${Makefile}
 519 mv Makefile.tem ${Makefile}
 520
 521 # If this is the library's top level, configure each multilib subdir.
 522 # This is done at the end because this is the loop that runs configure
 523 # in each multilib subdir and it seemed reasonable to finish updating the
 524 # Makefile before going on to configure the subdirs.
 525
 526 if [ "${ml_toplevel_p}" = yes ]; then
 527
 528 # We must freshly configure each subdirectory.  This bit of code is
 529 # actually partially stolen from the main configure script.  FIXME.
 530
 531 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 532
 533   if [ "${ml_verbose}" = --verbose ]; then
 534     echo "Running configure in multilib subdirs ${multidirs}"
 535     echo "pwd: `pwd`"
 536   fi
 537
 538   ml_origdir=`pwd`
 539   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 540   # cd to top-level-build-dir/${with_target_subdir}
 541   cd ..
 542
 543   for ml_dir in ${multidirs}; do
 544
 545     if [ "${ml_verbose}" = --verbose ]; then
 546       echo "Running configure in multilib subdir ${ml_dir}"
 547       echo "pwd: `pwd`"
 548     fi
 549
 550     if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
 551     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 552
 553     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 554     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 555
 556     case ${srcdir} in
 557     ".")
 558       echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
 559       if [ "${with_target_subdir}" != "." ]; then
 560         ml_unsubdir="../"
 561       else
 562         ml_unsubdir=""
 563       fi
 564       (cd ${ml_dir}/${ml_libdir};
 565        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 566       ml_newsrcdir="."
 567       ml_srcdiroption=
 568       multisrctop=${dotdot}
 569       ;;
 570     *)
 571       case "${srcdir}" in
 572       /*) # absolute path
 573         ml_newsrcdir=${srcdir}
 574         ;;
 575       *) # otherwise relative
 576         ml_newsrcdir=${dotdot}${srcdir}
 577         ;;
 578       esac
 579       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 580       multisrctop=
 581       ;;
 582     esac
 583
 584     case "${progname}" in
 585     /*)     ml_recprog=${progname} ;;
 586     *)      ml_recprog=${dotdot}${progname} ;;
 587     esac
 588
 589     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 590     ML_POPDIR=`pwd`
 591     cd ${ml_dir}/${ml_libdir}
 592
 593     if [ -f ${ml_newsrcdir}/configure ]; then
 594       ml_recprog=${ml_newsrcdir}/configure
 595     fi
 596     if eval ${ml_config_shell} ${ml_recprog} \
 597         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 598         ${ml_arguments} ${ml_srcdiroption} ; then
 599       true
 600     else
 601       exit 1
 602     fi
 603
 604     cd ${ML_POPDIR}
 605
 606   done
 607
 608   cd ${ml_origdir}
 609 fi
 610
 611 fi # ${ml_toplevel_p} = yes
 612 fi # ${enable_multilib} = yes