# Configure fragment invoked in the common section for subdirs
# wanting multilib support.
#
# The common section was chosen because xiberty clobbers $srcdir in the
# common section of its configure.in.
#
# The intent is to keep as much of this in one place as possible (and out
# of each subdirectory, eg: newlib, libio, etc.) until the right way to do
# this (ha ha) is decided upon.
#
# This is where a target selects what multilib directories to build.
# It is advisable to support a few --enable/--disable options to let the
# user select which libraries s/he really wants.
#
# Subdirectories wishing to use multilib should put the following lines
# in the initial ("common") section of configure.in:
#
#if [ -n "${with_multilib_top}" ]; then
#	. ${with_multilib_top}/../cfg-ml-com.in
#else
#	. ${srcdir}/../cfg-ml-com.in
#fi
#
# `with_multilib_top' exists to handle the case of configuring in the source
# tree: ${srcdir} is not constant.
#
# The following should be added to the "post-target" section of configure.in:
#
#if [ -n "${with_multilib_top}" ]; then
#	. ${with_multilib_top}/../cfg-ml-pos.in
#else
#	. ${srcdir}/../cfg-ml-pos.in
#fi

# 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.
#
# FIXME: It would be better if we could use the --print-multi-lib switch to
# gcc to get the list of directories to build, but at this point the compiler
# has not been built.

# Only do this if --enable-multilib.
# And only if at the top level, not a multilib subdirectory.

if [ "${enable_multilib}" = yes -a -z "${with_multisubdir}" ]; then

# Doing this in the common section means ${target} isn't set yet, so compute
# a copy here.  This is a bit kludgey, but again the current (short term) goal
# is to be as unobtrusive (sp?) to the rest of the sources as possible.

if result=`${config_shell} ${configsub} ${target_alias}` ; then
    true
else
    echo "Unrecognized target system name ${target_alias}." 1>&2
    exit 1
fi
target_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
target_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
target_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
target=${target_cpu}-${target_vendor}-${target_os}

# FIXME: Perhaps we can do something like the following instead.
# Fetch from gcc the multilib directories to use if we can.
# if [ -f ${srcdir}/../gcc/genmultilib -a -f ../gcc/Makefile ]; then
#   options=`grep "^MULTILIB_OPTIONS" ../gcc/Makefile | sed -e 's/^.*=//'`
#   multidirs=`${srcdir}/../gcc/genmultilib "$options" | \
#	sed -e 's/^#define.*//' -e 's/^[.].*//' -e 's/".*//' -e 's/ .*//'`
# else
#   multidirs=""
# fi

case "${target}" in
hppa*-*-*)
	multidirs="soft-float"
	;;
m68*-*-aout* | m68*-*-coff* | m68*-*-elf* | m68*-*-vxworks*)
	multidirs="m68000 m68020 m68881 msoft-float m68000/m68881 m68000/msoft-float m68020/m68881 m68020/msoft-float"
	;;
i960-*-*)
	multidirs=float
	;;
sparclite-*-* | sparclitefrw*-*-*)
	multidirs="mfpu msoft-float mflat mno-flat mfpu/mflat mfpu/mno-flat msoft-float/mflat msoft-float/mno-flat"
	;;
sparc-*-* | sparcfrw*-*-*)
	multidirs="soft v8 soft/v8"
	;;
z8k-*-coff)
	multidirs="z8001 std z8001/std"
	;;
h8300-*-*)
	multidirs=h8300h
	;;
h8500-*-*)
	multidirs="mbig msmall mcompact mmedium"
	;;
sh-*-*)
	multidirs="ml m2 ml/m2"
	;;
mips*-*-*)
	# Note that not all of these will be built for a particular
	# target; what is build depends upon the output gcc
	# --print-multi-lib.  We configure them all, to make our life
	# simpler here.  If somebody cares about configuration
	# efficiency, they will need to switch off on the various
	# targets to configure just the directories needed for that
	# target.
	# 
	# In the long run, it would be better to configure based on
	# the output of gcc --print-multi-lib, but, to do that, we
	# would have to build gcc before configuring newlib.
	#
	# Default to including the single-float directories.
	if [ x$enable_single_float = x ]; then
	  enable_single_float=yes
	fi
	if [ x$enable_single_float = xyes ]; then
	  multidirs="soft-float single el eb mips1 mips3 soft-float/el soft-float/eb soft-float/mips1 soft-float/mips3 soft-float/el/mips1 soft-float/el/mips3 soft-float/eb/mips1 soft-float/eb/mips3 single/el single/eb single/mips1 single/mips3 single/el/mips1 single/el/mips3 single/eb/mips1 single/eb/mips3 el/mips1 el/mips3 eb/mips1 eb/mips3"
	else
	  multidirs="soft-float el eb mips1 mips3 soft-float/el soft-float/eb soft-float/mips1 soft-float/mips3 soft-float/el/mips1 soft-float/el/mips3 soft-float/eb/mips1 soft-float/eb/mips3 el/mips1 el/mips3 eb/mips1 eb/mips3"
	fi
	if [ x$enable_biendian = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *endian* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_softfloat = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *soft-float* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_relocatable = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *relocatable* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_sysv = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *sysv* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	;;
powerpc-ibm-aix* | rs6000-ibm-aix*)
	multidirs="soft-float common soft-float/common"
	if [ x$enable_softfloat = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *soft-float* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_commoncpu = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *common* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	;;
powerpc-*-eabiaix*)
	multidirs="soft-float relocatable little sysv little/sysv relocatable/little relocatable/sysv relocatable/little/sysv soft-float/relocatable soft-float/little soft-float/sysv soft-float/little/sysv soft-float/relocatable/little soft-float/relocatable/sysv soft-float/relocatable/little/sysv"
	if [ x$enable_biendian = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *endian* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_softfloat = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *soft-float* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_relocatable = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *relocatable* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_sysv = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *sysv* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	;;
powerpc-*-eabi* | powerpc-*-elf* | powerpc-*-sysv4*)
	multidirs="soft-float relocatable little aix little/aix relocatable/little relocatable/aix relocatable/little/aix soft-float/relocatable soft-float/little soft-float/aix soft-float/little/aix soft-float/relocatable/little soft-float/relocatable/aix soft-float/relocatable/little/aix aixdesc soft-float/aixdesc"
	if [ x$enable_biendian = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *endian* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_softfloat = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *soft-float* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_relocatable = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *relocatable* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_aix = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *aix* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	;;
powerpcle-*-eabi* | powerpcle-*-elf* | powerpcle-*-sysv4*)
	multidirs="soft-float relocatable big aix big/aix relocatable/big relocatable/aix relocatable/big/aix soft-float/relocatable soft-float/big soft-float/aix soft-float/big/aix soft-float/relocatable/big soft-float/relocatable/aix soft-float/relocatable/big/aix"
	if [ x$enable_biendian = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *endian* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_softfloat = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *soft-float* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_relocatable = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *relocatable* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	if [ x$enable_aix = xno ]
	then
	  old_multidirs="${multidirs}"
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "$x" in
	      *aix* ) : ;;
	      *) if [ x"$multidirs" = x ]; then multidirs="$x"; else multidirs="${multidirs} ${x}"; fi ;;
	    esac
	  done
	fi
	;;
*)
	multidirs=
	;;
esac

# We must freshly configure each subdirectory.  This bit of code is
# actually partially stolen from the main configure script.  FIXME.

if [ -n "${multidirs}" ] && [ -z "${norecursion}" ]; then
  for dir in ${multidirs}; do

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

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

    case ${srcdir} in
    ".")
      echo Building symlink tree in `pwd`/${dir}
      rm -f tmpconfig
      cat >tmpconfig <<\EOF
#!/bin/sh
for f in `ls -a $1`; do
  if [ -d $1$f ]; then
    found=
    for i in $2; do
      if [ "$f" = "$i" ]; then
	found=yes
      fi
    done
    if [ -z "${found}" ]; then
      if [ -d $f ]; then true; else mkdir $f; fi
      (cd $f; ../$0 ../$1$f/ "$2")
    fi
  else
    rm -f $f
    ln -s $1$f .
  fi
done
EOF
      chmod +x tmpconfig
      (cd ${dir};
       ${dotdot}tmpconfig ${dotdot} ". .. CVS tmpconfig ${multidirs}")
      rm -f tmpconfig
      srcdiroption=
      multilib_top=${dotdot}
      ;;
    *)
      case "${srcdir}" in
      /*) # absolute path
        newsrcdir=${srcdir}/${configdir}
        ;;
      *) # otherwise relative
        newsrcdir=${dotdot}${srcdir}/${configdir}
        ;;
      esac
      srcdiroption="-srcdir=${newsrcdir}"
      multilib_top=${newsrcdir}
      ;;
    esac

    case "${progname}" in
    /*)     recprog=${progname} ;;
    *)      recprog=${dotdot}${progname} ;;
    esac

    POPDIR=${PWD=`pwd`}
    cd ${dir}
    if eval ${config_shell} ${recprog} ${verbose} \
	--with-multisubdir=${dir} --with-multilib-top=${multilib_top} \
	${buildopt} --host=${host_alias} --target=${target_alias} \
        ${prefixoption} ${tmpdiroption} ${exec_prefixoption} \
        ${srcdiroption} ${program_prefixoption} ${program_suffixoption} \
	${program_transform_nameoption} ${site_option} ${withoptions} \
	${withoutoptions} ${enableoptions} ${disableoptions} \
	${cache_file_option} ${removing} ${other_options} ${redirect} ; then
      true
    else
      exit 1
    fi

    cd ${POPDIR}

  done
fi

fi # ${enable_multilib = yes -a -z ${with_multisubdir}