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# Configure fragment invoked in the post-target section for subdirs

# wanting multilib support.

#

# It is advisable to support a few --enable/--disable options to let the

# user select which libraries s/he really wants.

#

# Subdirectories wishing to use multilib should put the following lines

# in the "post-target" section of configure.in.

#

# if [ "${srcdir}" = "." ] ; then

#   if [ "${with_target_subdir}" != "." ] ; then

#     . ${with_multisrctop}../../config-ml.in

#   else

#     . ${with_multisrctop}../config-ml.in

#   fi

# else

#   . ${srcdir}/../config-ml.in

# fi

#

# See librx/configure.in in the libg++ distribution for an example of how

# to handle autoconf'd libraries.

#

# Things are complicated because 6 separate cases must be handled:

# 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.

#

# srcdir=. is special.  It must handle make programs that don't handle VPATH.

# To implement this, a symlink tree is built for each library and for each

# multilib subdir.

#

# The build tree is layed out as

#

# ./

#   libg++

#   newlib

#   m68020/

#          libg++

#          newlib

#          m68881/

#                 libg++

#                 newlib

#

# The nice feature about this arrangement is that inter-library references

# in the build tree work without having to care where you are.  Note that

# inter-library references also work in the source tree because symlink trees

# are built when srcdir=.

#

# Unfortunately, trying to access the libraries in the build tree requires

# the user to manually choose which library to use as GCC won't be able to

# find the right one.  This is viewed as the lesser of two evils.

#

# Configure variables:

# ${with_target_subdir} = "." for native, or ${target_alias} for cross.

# Set by top level Makefile.

# ${with_multisrctop} = how many levels of multilibs there are in the source

# tree.  It exists to handle the case of configuring in the source tree:

# ${srcdir} is not constant.

# ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).

#

# Makefile variables:

# MULTISRCTOP = number of multilib levels in source tree (+1 if cross)

# (FIXME: note that this is different than ${with_multisrctop}.  Check out.).

# MULTIBUILDTOP = number of multilib levels in build tree

# MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)

# (only defined in each library's main Makefile).

# MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)

# (only defined in each multilib subdir).

# FIXME: Multilib is currently disabled by default for everything other than

# newlib.  It is up to each target to turn on multilib support for the other

# libraries as desired.

# We have to handle being invoked by both Cygnus configure and Autoconf.

#

# Cygnus configure incoming variables:

# srcdir, subdir, host, arguments

#

# Autoconf incoming variables:

# srcdir, host, ac_configure_args

#

# We *could* figure srcdir and host out, but we'd have to do work that

# our caller has already done to figure them out and requiring these two

# seems reasonable.

# Note that `host' in this case is GCC's `target'.  Target libraries are

# configured for a particular host.

if [ -n "${ac_configure_args}" ]; then

  Makefile=${ac_file-Makefile}

  ml_config_shell=${CONFIG_SHELL-/bin/sh}

  ml_arguments="${ac_configure_args}"

  ml_realsrcdir=${srcdir}

else

  Makefile=${Makefile-Makefile}

  ml_config_shell=${config_shell-/bin/sh}

  ml_arguments="${arguments}"

  if [ -n "${subdir}" -a "${subdir}" != "." ] ; then

    ml_realsrcdir=${srcdir}/${subdir}

  else

    ml_realsrcdir=${srcdir}

  fi

fi

# Scan all the arguments and set all the ones we need.

ml_verbose=--verbose

for option in ${ml_arguments}

do

  case $option in

  --*) ;;

  -*) option=-$option ;;

  esac

  case $option in

  --*=*)

        optarg=`echo $option | sed -e 's/^[^=]*=//'`

        ;;

  esac

  case $option in

  --disable-*)

        enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`

        eval $enableopt=no

        ;;

  --enable-*)

        case "$option" in

        *=*)    ;;

        *)      optarg=yes ;;

        esac

        enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`

        eval $enableopt="$optarg"

        ;;

  --norecursion | --no*)

        ml_norecursion=yes

        ;;

  --silent | --sil* | --quiet | --q*)

        ml_verbose=--silent

        ;;

  --verbose | --v | --verb*)

        ml_verbose=--verbose

        ;;

  --with-*)

        case "$option" in

        *=*)    ;;

        *)      optarg=yes ;;

        esac

        withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`

        eval $withopt="$optarg"

        ;;

  --without-*)

        withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`

        eval $withopt=no

        ;;

  esac

done

# Only do this if --enable-multilib.

if [ "${enable_multilib}" = yes ]; then

# Compute whether this is the library's top level directory

# (ie: not a multilib subdirectory, and not a subdirectory like libg++/src).

# ${with_multisubdir} tells us we're in the right branch, but we could be

# in a subdir of that.

# ??? The previous version could void this test by separating the process into

# two files: one that only the library's toplevel configure.in ran (to

# configure the multilib subdirs), and another that all configure.in's ran to

# update the Makefile.  It seemed reasonable to collapse all multilib support

# into one file, but it does leave us with having to perform this test.

ml_toplevel_p=no

if [ -z "${with_multisubdir}" ]; then

  if [ "${srcdir}" = "." ]; then

    # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.

    # ${with_target_subdir} = "." for native, otherwise target alias.

    if [ "${with_target_subdir}" = "." ]; then

      if [ -f ${ml_realsrcdir}/../config-ml.in ]; then

        ml_toplevel_p=yes

      fi

    else

      if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then

        ml_toplevel_p=yes

      fi

    fi

  else

    # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.

    if [ -f ${ml_realsrcdir}/../config-ml.in ]; then

      ml_toplevel_p=yes

    fi

  fi

fi

# If this is the library's top level directory, set multidirs to the

# multilib subdirs to support.  This lives at the top because we need

# `multidirs' set right away.

if [ "${ml_toplevel_p}" = yes ]; then

multidirs=

for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do

  dir=`echo $i | sed -e 's/;.*$//'`

  if [ "${dir}" = "." ]; then

    true

  else

    if [ -z "${multidirs}" ]; then

      multidirs="${dir}"

    else

      multidirs="${multidirs} ${dir}"

    fi

  fi

done

# Target libraries are configured for the host they run on, so we check

# $host here, not $target.

case "${host}" in

arc-*-elf*)

        if [ x$enable_biendian != xyes ]

        then

          old_multidirs=${multidirs}

          multidirs=""

          for x in ${old_multidirs}; do

            case "${x}" in

              *be*) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        ;;

arm-*-*)

        if [ x"$enable_fpu" = xno ]

        then

          old_multidirs=${multidirs}

          multidirs=""

          for x in ${old_multidirs}; do

            case "${x}" in

              *fpu*) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x"$enable_26bit" = xno ]

        then

          old_multidirs=${multidirs}

          multidirs=""

          for x in ${old_multidirs}; do

            case "${x}" in

              *26bit*) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x"$enable_underscore" = xno ]

        then

          old_multidirs=${multidirs}

          multidirs=""

          for x in ${old_multidirs}; do

            case "${x}" in

              *under*) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x"$enable_interwork" = xno ]

        then

          old_multidirs=${multidirs}

          multidirs=""

          for x in ${old_multidirs}; do

            case "${x}" in

              *interwork*) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_biendian = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *le* ) : ;;

              *be* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        ;;

m68*-*-*)

        if [ x$enable_softfloat = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *soft-float* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_m68881 = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *m68881* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_m68000 = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *m68000* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_m68020 = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *m68020* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        ;;

mips*-*-*)

        if [ x$enable_single_float = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *single* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_biendian = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *el* ) : ;;

              *eb* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_softfloat = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *soft-float* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        ;;

powerpc*-*-* | rs6000*-*-*)

        if [ x$enable_softfloat = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *soft-float* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_powercpu = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              power | */power | */power/* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_powerpccpu = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *powerpc* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_powerpcos = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *mcall-linux* | *mcall-solaris* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_biendian = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *mlittle* | *mbig* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_sysv = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *mcall-sysv* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        if [ x$enable_aix = xno ]

        then

          old_multidirs="${multidirs}"

          multidirs=""

          for x in ${old_multidirs}; do

            case "$x" in

              *mcall-aix* ) : ;;

              *) multidirs="${multidirs} ${x}" ;;

            esac

          done

        fi

        ;;

esac

# Remove extraneous blanks from multidirs.

# Tests like `if [ -n "$multidirs" ]' require it.

multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`

# Add code to library's top level makefile to handle building the multilib

# subdirs.

cat > Multi.tem <<\EOF

# FIXME: There should be an @-sign in front of the `if'.

# Leave out until this is tested a bit more.

multi-do:

        if [ -z "$(MULTIDIRS)" ]; then \

          true; \

        else \

          rootpre=`pwd`/; export rootpre; \

          srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \

          lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \

          compiler="$(CC)"; \

          for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \

            dir=`echo $$i | sed -e 's/;.*$$//'`; \

            if [ "$${dir}" = "." ]; then \

              true; \

            else \

              if [ -d ../$${dir}/$${lib} ]; then \

                flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \

                if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \

                                CFLAGS="$(CFLAGS) $${flags}" \

                                CXXFLAGS="$(CXXFLAGS) $${flags}" \

                                LIBCFLAGS="$(LIBCFLAGS) $${flags}" \

                                LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \

                                LDFLAGS="$(LDFLAGS) $${flags}" \

                                $(DO)); then \

                  true; \

                else \

                  exit 1; \

                fi; \

              else true; \

              fi; \

            fi; \

          done; \

        fi

# FIXME: There should be an @-sign in front of the `if'.

# Leave out until this is tested a bit more.

multi-clean:

        if [ -z "$(MULTIDIRS)" ]; then \

          true; \

        else \

          lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \

          for dir in Makefile $(MULTIDIRS); do \

            if [ -f ../$${dir}/$${lib}/Makefile ]; then \

              if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \

              then true; \

              else exit 1; \

              fi; \

            else true; \

            fi; \

          done; \

        fi

EOF

cat ${Makefile} Multi.tem > Makefile.tem

rm -f ${Makefile} Multi.tem

mv Makefile.tem ${Makefile}

fi # ${ml_toplevel_p} = yes

if [ "${ml_verbose}" = --verbose ]; then

  echo "Adding multilib support to Makefile in ${ml_realsrcdir}"

  if [ "${ml_toplevel_p}" = yes ]; then

    echo "multidirs=${multidirs}"

  fi

  echo "with_multisubdir=${with_multisubdir}"

fi

if [ "${srcdir}" = "." ]; then

  if [ "${with_target_subdir}" != "." ]; then

    ml_srcdotdot="../"

  else

    ml_srcdotdot=""

  fi

else

  ml_srcdotdot=""

fi

if [ -z "${with_multisubdir}" ]; then

  ml_subdir=

  ml_builddotdot=

  : # ml_srcdotdot= # already set

else

  ml_subdir="/${with_multisubdir}"

  # The '[^/][^/]*' appears that way to work around a SunOS sed bug.

  ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/

  if [ "$srcdir" = "." ]; then

    ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}

  else

    : # ml_srcdotdot= # already set

  fi

fi

if [ "${ml_toplevel_p}" = yes ]; then

  ml_do='$(MAKE)'

  ml_clean='$(MAKE)'

else

  ml_do=true

  ml_clean=true

fi

# TOP is used by newlib and should not be used elsewhere for this purpose.

# MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty

# when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.

# FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can

# delete TOP.  Newlib may wish to continue to use TOP for its own purposes

# of course.

# MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)

# and lists the subdirectories to recurse into.

# MULTISUBDIR is non-empty in each cpu subdirectory's Makefile

# (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with

# a leading '/'.

# MULTIDO is used for targets like all, install, and check where

# $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.

# MULTICLEAN is used for the *clean targets.

#

# ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are

# currently kept separate because we don't want the *clean targets to require

# the existence of the compiler (which MULTIDO currently requires) and

# therefore we'd have to record the directory options as well as names

# (currently we just record the names and use --print-multi-lib to get the

# options).

sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \

    -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \

    -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \

    -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \

    -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \

    -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \

    -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \

        ${Makefile} > Makefile.tem

rm -f ${Makefile}

mv Makefile.tem ${Makefile}

# If this is the library's top level, configure each multilib subdir.

# This is done at the end because this is the loop that runs configure

# in each multilib subdir and it seemed reasonable to finish updating the

# Makefile before going on to configure the subdirs.

if [ "${ml_toplevel_p}" = yes ]; then

# We must freshly configure each subdirectory.  This bit of code is

# actually partially stolen from the main configure script.  FIXME.

if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then

  if [ "${ml_verbose}" = --verbose ]; then

    echo "Running configure in multilib subdirs ${multidirs}"

    echo "pwd: `pwd`"

  fi

  ml_origdir=`pwd`

  ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`

  # cd to top-level-build-dir/${with_target_subdir}

  cd ..

  for ml_dir in ${multidirs}; do

    if [ "${ml_verbose}" = --verbose ]; then

      echo "Running configure in multilib subdir ${ml_dir}"

      echo "pwd: `pwd`"

    fi

    if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi

    if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi

    # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../

    dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`

    case ${srcdir} in

    ".")

      echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}

      if [ "${with_target_subdir}" != "." ]; then

        ml_unsubdir="../"

      else

        ml_unsubdir=""

      fi

      (cd ${ml_dir}/${ml_libdir};

       ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")

      if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then

        if [ x"${MAKE}" = x ]; then

          (cd ${ml_dir}/${ml_libdir}; make distclean)

        else

          (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)

        fi

      fi

      ml_newsrcdir="."

      ml_srcdiroption=

      multisrctop=${dotdot}

      ;;

    *)

      case "${srcdir}" in

      /*) # absolute path

        ml_newsrcdir=${srcdir}

        ;;

      *) # otherwise relative

        ml_newsrcdir=${dotdot}${srcdir}

        ;;

      esac

      ml_srcdiroption="-srcdir=${ml_newsrcdir}"

      multisrctop=

      ;;

    esac

    case "${progname}" in

    /*)     ml_recprog=${progname} ;;

    *)      ml_recprog=${dotdot}${progname} ;;

    esac

    # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.

    ML_POPDIR=`pwd`

    cd ${ml_dir}/${ml_libdir}

    if [ -f ${ml_newsrcdir}/configure ]; then

      ml_recprog=${ml_newsrcdir}/configure

    fi

    if eval ${ml_config_shell} ${ml_recprog} \

        --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \

        ${ml_arguments} ${ml_srcdiroption} ; then

      true

    else

      exit 1

    fi

    cd ${ML_POPDIR}

  done

  cd ${ml_origdir}

fi

fi # ${ml_toplevel_p} = yes

fi # ${enable_multilib} = yes