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 ml_verbose=--verbose
 103 for option in ${ml_arguments}
 104 do
 105   case $option in
 106   --*) ;;
 107   -*) option=-$option ;;
 108   esac
 109
 110   case $option in
 111   --*=*)
 112         optarg=`echo $option | sed -e 's/^[^=]*=//'`
 113         ;;
 114   esac
 115
 116   case $option in
 117   --disable-*)
 118         enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
 119         eval $enableopt=no
 120         ;;
 121   --enable-*)
 122         case "$option" in
 123         *=*)    ;;
 124         *)      optarg=yes ;;
 125         esac
 126         enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 127         eval $enableopt="$optarg"
 128         ;;
 129   --norecursion | --no*)
 130         ml_norecursion=yes
 131         ;;
 132   --silent | --sil* | --quiet | --q*)
 133         ml_verbose=--silent
 134         ;;
 135   --verbose | --v | --verb*)
 136         ml_verbose=--verbose
 137         ;;
 138   --with-*)
 139         case "$option" in
 140         *=*)    ;;
 141         *)      optarg=yes ;;
 142         esac
 143         withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 144         eval $withopt="$optarg"
 145         ;;
 146   --without-*)
 147         withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
 148         eval $withopt=no
 149         ;;
 150   esac
 151 done
 152
 153 # Only do this if --enable-multilib.
 154 if [ "${enable_multilib}" = yes ]; then
 155
 156 # Compute whether this is the library's top level directory
 157 # (ie: not a multilib subdirectory, and not a subdirectory like libg++/src).
 158 # ${with_multisubdir} tells us we're in the right branch, but we could be
 159 # in a subdir of that.
 160 # ??? The previous version could void this test by separating the process into
 161 # two files: one that only the library's toplevel configure.in ran (to
 162 # configure the multilib subdirs), and another that all configure.in's ran to
 163 # update the Makefile.  It seemed reasonable to collapse all multilib support
 164 # into one file, but it does leave us with having to perform this test.
 165 ml_toplevel_p=no
 166 if [ -z "${with_multisubdir}" ]; then
 167   if [ "${srcdir}" = "." ]; then
 168     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 169     # ${with_target_subdir} = "." for native, otherwise target alias.
 170     if [ "${with_target_subdir}" = "." ]; then
 171       if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 172         ml_toplevel_p=yes
 173       fi
 174     else
 175       if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
 176         ml_toplevel_p=yes
 177       fi
 178     fi
 179   else
 180     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 181     if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 182       ml_toplevel_p=yes
 183     fi
 184   fi
 185 fi
 186
 187 # If this is the library's top level directory, set multidirs to the
 188 # multilib subdirs to support.  This lives at the top because we need
 189 # `multidirs' set right away.
 190
 191 if [ "${ml_toplevel_p}" = yes ]; then
 192
 193 multidirs=
 194 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 195   dir=`echo $i | sed -e 's/;.*$//'`
 196   if [ "${dir}" = "." ]; then
 197     true
 198   else
 199     if [ -z "${multidirs}" ]; then
 200       multidirs="${dir}"
 201     else
 202       multidirs="${multidirs} ${dir}"
 203     fi
 204   fi
 205 done
 206
 207 case "${target}" in
 208 arc-*-elf*)
 209         if [ x$enable_biendian != xyes ]
 210         then
 211           old_multidirs=${multidirs}
 212           multidirs=""
 213           for x in ${old_multidirs}; do
 214             case "${x}" in
 215               *be*) : ;;
 216               *) multidirs="${multidirs} ${x}" ;;
 217             esac
 218           done
 219         fi
 220         ;;
 221 m68*-*-*)
 222         if [ x$enable_softfloat = xno ]
 223         then
 224           old_multidirs="${multidirs}"
 225           multidirs=""
 226           for x in ${old_multidirs}; do
 227             case "$x" in
 228               *soft-float* ) : ;;
 229               *) multidirs="${multidirs} ${x}" ;;
 230             esac
 231           done
 232         fi
 233         if [ x$enable_m68881 = xno ]
 234         then
 235           old_multidirs="${multidirs}"
 236           multidirs=""
 237           for x in ${old_multidirs}; do
 238             case "$x" in
 239               *m68881* ) : ;;
 240               *) multidirs="${multidirs} ${x}" ;;
 241             esac
 242           done
 243         fi
 244         if [ x$enable_m68000 = xno ]
 245         then
 246           old_multidirs="${multidirs}"
 247           multidirs=""
 248           for x in ${old_multidirs}; do
 249             case "$x" in
 250               *m68000* ) : ;;
 251               *) multidirs="${multidirs} ${x}" ;;
 252             esac
 253           done
 254         fi
 255         if [ x$enable_m68020 = xno ]
 256         then
 257           old_multidirs="${multidirs}"
 258           multidirs=""
 259           for x in ${old_multidirs}; do
 260             case "$x" in
 261               *m68020* ) : ;;
 262               *) multidirs="${multidirs} ${x}" ;;
 263             esac
 264           done
 265         fi
 266         ;;
 267 mips*-*-*)
 268         if [ x$enable_single_float = xno ]
 269         then
 270           old_multidirs="${multidirs}"
 271           multidirs=""
 272           for x in ${old_multidirs}; do
 273             case "$x" in
 274               *single* ) : ;;
 275               *) multidirs="${multidirs} ${x}" ;;
 276             esac
 277           done
 278         fi
 279         if [ x$enable_biendian = xno ]
 280         then
 281           old_multidirs="${multidirs}"
 282           multidirs=""
 283           for x in ${old_multidirs}; do
 284             case "$x" in
 285               *el* ) : ;;
 286               *eb* ) : ;;
 287               *) multidirs="${multidirs} ${x}" ;;
 288             esac
 289           done
 290         fi
 291         if [ x$enable_softfloat = xno ]
 292         then
 293           old_multidirs="${multidirs}"
 294           multidirs=""
 295           for x in ${old_multidirs}; do
 296             case "$x" in
 297               *soft-float* ) : ;;
 298               *) multidirs="${multidirs} ${x}" ;;
 299             esac
 300           done
 301         fi
 302         ;;
 303 powerpc*-*-* | rs6000*-*-*)
 304         if [ x$enable_softfloat = xno ]
 305         then
 306           old_multidirs="${multidirs}"
 307           multidirs=""
 308           for x in ${old_multidirs}; do
 309             case "$x" in
 310               *soft-float* ) : ;;
 311               *) multidirs="${multidirs} ${x}" ;;
 312             esac
 313           done
 314         fi
 315         if [ x$enable_powercpu = xno ]
 316         then
 317           old_multidirs="${multidirs}"
 318           multidirs=""
 319           for x in ${old_multidirs}; do
 320             case "$x" in
 321               power | */power | */power/* ) : ;;
 322               *) multidirs="${multidirs} ${x}" ;;
 323             esac
 324           done
 325         fi
 326         if [ x$enable_powerpccpu = xno ]
 327         then
 328           old_multidirs="${multidirs}"
 329           multidirs=""
 330           for x in ${old_multidirs}; do
 331             case "$x" in
 332               *powerpc* ) : ;;
 333               *) multidirs="${multidirs} ${x}" ;;
 334             esac
 335           done
 336         fi
 337         if [ x$enable_powerpcos = xno ]
 338         then
 339           old_multidirs="${multidirs}"
 340           multidirs=""
 341           for x in ${old_multidirs}; do
 342             case "$x" in
 343               *mcall-linux* | *mcall-solaris* ) : ;;
 344               *) multidirs="${multidirs} ${x}" ;;
 345             esac
 346           done
 347         fi
 348         if [ x$enable_biendian = xno ]
 349         then
 350           old_multidirs="${multidirs}"
 351           multidirs=""
 352           for x in ${old_multidirs}; do
 353             case "$x" in
 354               *mlittle* | *mbig* ) : ;;
 355               *) multidirs="${multidirs} ${x}" ;;
 356             esac
 357           done
 358         fi
 359         if [ x$enable_sysv = xno ]
 360         then
 361           old_multidirs="${multidirs}"
 362           multidirs=""
 363           for x in ${old_multidirs}; do
 364             case "$x" in
 365               *mcall-sysv* ) : ;;
 366               *) multidirs="${multidirs} ${x}" ;;
 367             esac
 368           done
 369         fi
 370         if [ x$enable_aix = xno ]
 371         then
 372           old_multidirs="${multidirs}"
 373           multidirs=""
 374           for x in ${old_multidirs}; do
 375             case "$x" in
 376               *mcall-aix* ) : ;;
 377               *) multidirs="${multidirs} ${x}" ;;
 378             esac
 379           done
 380         fi
 381         ;;
 382 esac
 383
 384 # Remove extraneous blanks from multidirs.
 385 # Tests like `if [ -n "$multidirs" ]' require it.
 386 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
 387
 388 # Add code to library's top level makefile to handle building the multilib
 389 # subdirs.
 390
 391 cat > Multi.tem <<\EOF
 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-do:
 396         if [ -z "$(MULTIDIRS)" ]; then \
 397           true; \
 398         else \
 399           rootpre=`pwd`/; export rootpre; \
 400           srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
 401           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 402           compiler="$(CC)"; \
 403           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
 404             dir=`echo $$i | sed -e 's/;.*$$//'`; \
 405             if [ "$${dir}" = "." ]; then \
 406               true; \
 407             else \
 408               if [ -d ../$${dir}/$${lib} ]; then \
 409                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
 410                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
 411                                 CFLAGS="$(CFLAGS) $${flags}" \
 412                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 413                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 414                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 415                                 LDFLAGS="$(LDFLAGS) $${flags}" \
 416                                 $(DO)); then \
 417                   true; \
 418                 else \
 419                   exit 1; \
 420                 fi; \
 421               else true; \
 422               fi; \
 423             fi; \
 424           done; \
 425         fi
 426
 427 # FIXME: There should be an @-sign in front of the `if'.
 428 # Leave out until this is tested a bit more.
 429 multi-clean:
 430         if [ -z "$(MULTIDIRS)" ]; then \
 431           true; \
 432         else \
 433           lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
 434           for dir in Makefile $(MULTIDIRS); do \
 435             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 436               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 437               then true; \
 438               else exit 1; \
 439               fi; \
 440             else true; \
 441             fi; \
 442           done; \
 443         fi
 444 EOF
 445
 446 cat ${Makefile} Multi.tem > Makefile.tem
 447 rm -f ${Makefile} Multi.tem
 448 mv Makefile.tem ${Makefile}
 449
 450 fi # ${ml_toplevel_p} = yes
 451
 452 if [ "${ml_verbose}" = --verbose ]; then
 453   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
 454   if [ "${ml_toplevel_p}" = yes ]; then
 455     echo "multidirs=${multidirs}"
 456   fi
 457   echo "with_multisubdir=${with_multisubdir}"
 458 fi
 459
 460 if [ "${srcdir}" = "." ]; then
 461   if [ "${with_target_subdir}" != "." ]; then
 462     ml_srcdotdot="../"
 463   else
 464     ml_srcdotdot=""
 465   fi
 466 else
 467   ml_srcdotdot=""
 468 fi
 469
 470 if [ -z "${with_multisubdir}" ]; then
 471   ml_subdir=
 472   ml_builddotdot=
 473   : # ml_srcdotdot= # already set
 474 else
 475   ml_subdir="/${with_multisubdir}"
 476   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 477   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 478   if [ "$srcdir" = "." ]; then
 479     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 480   else
 481     : # ml_srcdotdot= # already set
 482   fi
 483 fi
 484
 485 if [ "${ml_toplevel_p}" = yes ]; then
 486   ml_do='$(MAKE)'
 487   ml_clean='$(MAKE)'
 488 else
 489   ml_do=true
 490   ml_clean=true
 491 fi
 492
 493 # TOP is used by newlib and should not be used elsewhere for this purpose.
 494 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 495 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 496 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 497 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 498 # of course.
 499 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 500 # and lists the subdirectories to recurse into.
 501 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 502 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 503 # a leading '/'.
 504 # MULTIDO is used for targets like all, install, and check where
 505 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 506 # MULTICLEAN is used for the *clean targets.
 507 #
 508 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 509 # currently kept separate because we don't want the *clean targets to require
 510 # the existence of the compiler (which MULTIDO currently requires) and
 511 # therefore we'd have to record the directory options as well as names
 512 # (currently we just record the names and use --print-multi-lib to get the
 513 # options).
 514
 515 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 516     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 517     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 518     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 519     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 520     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 521     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 522         ${Makefile} > Makefile.tem
 523 rm -f ${Makefile}
 524 mv Makefile.tem ${Makefile}
 525
 526 # If this is the library's top level, configure each multilib subdir.
 527 # This is done at the end because this is the loop that runs configure
 528 # in each multilib subdir and it seemed reasonable to finish updating the
 529 # Makefile before going on to configure the subdirs.
 530
 531 if [ "${ml_toplevel_p}" = yes ]; then
 532
 533 # We must freshly configure each subdirectory.  This bit of code is
 534 # actually partially stolen from the main configure script.  FIXME.
 535
 536 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 537
 538   if [ "${ml_verbose}" = --verbose ]; then
 539     echo "Running configure in multilib subdirs ${multidirs}"
 540     echo "pwd: `pwd`"
 541   fi
 542
 543   ml_origdir=`pwd`
 544   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 545   # cd to top-level-build-dir/${with_target_subdir}
 546   cd ..
 547
 548   for ml_dir in ${multidirs}; do
 549
 550     if [ "${ml_verbose}" = --verbose ]; then
 551       echo "Running configure in multilib subdir ${ml_dir}"
 552       echo "pwd: `pwd`"
 553     fi
 554
 555     if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
 556     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 557
 558     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 559     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 560
 561     case ${srcdir} in
 562     ".")
 563       echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
 564       if [ "${with_target_subdir}" != "." ]; then
 565         ml_unsubdir="../"
 566       else
 567         ml_unsubdir=""
 568       fi
 569       (cd ${ml_dir}/${ml_libdir};
 570        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 571       if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
 572         if [ x"${MAKE}" = x ]; then
 573           (cd ${ml_dir}/${ml_libdir}; make distclean)
 574         else
 575           (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
 576         fi
 577       fi
 578       ml_newsrcdir="."
 579       ml_srcdiroption=
 580       multisrctop=${dotdot}
 581       ;;
 582     *)
 583       case "${srcdir}" in
 584       /*) # absolute path
 585         ml_newsrcdir=${srcdir}
 586         ;;
 587       *) # otherwise relative
 588         ml_newsrcdir=${dotdot}${srcdir}
 589         ;;
 590       esac
 591       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 592       multisrctop=
 593       ;;
 594     esac
 595
 596     case "${progname}" in
 597     /*)     ml_recprog=${progname} ;;
 598     *)      ml_recprog=${dotdot}${progname} ;;
 599     esac
 600
 601     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 602     ML_POPDIR=`pwd`
 603     cd ${ml_dir}/${ml_libdir}
 604
 605     if [ -f ${ml_newsrcdir}/configure ]; then
 606       ml_recprog=${ml_newsrcdir}/configure
 607     fi
 608     if eval ${ml_config_shell} ${ml_recprog} \
 609         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 610         ${ml_arguments} ${ml_srcdiroption} ; then
 611       true
 612     else
 613       exit 1
 614     fi
 615
 616     cd ${ML_POPDIR}
 617
 618   done
 619
 620   cd ${ml_origdir}
 621 fi
 622
 623 fi # ${ml_toplevel_p} = yes
 624 fi # ${enable_multilib} = yes