[deliverable/binutils-gdb.git] / config-ml.in

# 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, target, arguments
#
# Autoconf incoming variables:
# srcdir, target, ac_configure_args
#
# We *could* figure srcdir and target out, but we'd have to do work that
# our caller has already done to figure them out and requiring these two
# seems reasonable.

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.

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
	;;
  --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

case "${target}" in
arc-*-elf*)
	if [ x$enable_biendian != xyes ]
	then
	  old_multidirs=${multidirs}
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "${x}" in
	      *be*) : ;;
	      *) multidirs="${multidirs} ${x}" ;;
	    esac
	  done
	fi
	;;
m32r-*-*)
	if [ x$enable_m32rx = xno ]
	then
	  old_multidirs=${multidirs}
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "${x}" in
	      *m32rx*) : ;;
	      *) 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}" \
				$(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}${ml_libdir} "")
      ml_newsrcdir="."
      ml_srcdiroption=
      multisrctop=${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 # ${enable_multilib} = yes
Commit	Line	Data
d747cac4 DE	1	# Configure fragment invoked in the post-target section for subdirs
	2	# wanting multilib support.
	3	#
	4	# It is advisable to support a few --enable/--disable options to let the
	5	# user select which libraries s/he really wants.
	6	#
	7	# Subdirectories wishing to use multilib should put the following lines
	8	# in the "post-target" section of configure.in.
	9	#
	10	# if [ "${srcdir}" = "." ] ; then
	11	# if [ "${with_target_subdir}" != "." ] ; then
953fbd65	12	# . ${with_multisrctop}../../config-ml.in
d747cac4	13	# else
953fbd65	14	# . ${with_multisrctop}../config-ml.in
d747cac4 DE	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	#
953fbd65 DE	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	#
d747cac4 DE	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)
953fbd65 DE	61	# (FIXME: note that this is different than ${with_multisrctop}. Check out.).
953fbd65 DE	62	# MULTIBUILDTOP = number of multilib levels in build tree
d747cac4 DE	63	# MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
	64	# (only defined in each library's main Makefile).
	65	# MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
	66	# (only defined in each multilib subdir).
	67
	68	# FIXME: Multilib is currently disabled by default for everything other than
	69	# newlib. It is up to each target to turn on multilib support for the other
	70	# libraries as desired.
	71
	72	# We have to handle being invoked by both Cygnus configure and Autoconf.
953fbd65 DE	73	#
	74	# Cygnus configure incoming variables:
	75	# srcdir, subdir, target, arguments
	76	#
	77	# Autoconf incoming variables:
	78	# srcdir, target, ac_configure_args
	79	#
	80	# We could figure srcdir and target out, but we'd have to do work that
	81	# our caller has already done to figure them out and requiring these two
	82	# seems reasonable.
d747cac4 DE	83
	84	if [ -n "${ac_configure_args}" ]; then
	85	Makefile=${ac_file-Makefile}
2a59259c DE	86	ml_config_shell=${CONFIG_SHELL-/bin/sh}
2a59259c DE	87	ml_arguments="${ac_configure_args}"
953fbd65	88	ml_realsrcdir=${srcdir}
d747cac4 DE	89	else
d747cac4 DE	90	Makefile=${Makefile-Makefile}
2a59259c DE	91	ml_config_shell=${config_shell-/bin/sh}
2a59259c DE	92	ml_arguments="${arguments}"
953fbd65 DE	93	if [ -n "${subdir}" -a "${subdir}" != "." ] ; then
	94	ml_realsrcdir=${srcdir}/${subdir}
	95	else
	96	ml_realsrcdir=${srcdir}
	97	fi
d747cac4 DE	98	fi
	99
	100	# Scan all the arguments and set all the ones we need.
	101
2a59259c	102	for option in ${ml_arguments}
d747cac4 DE	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*)
2a59259c	129	ml_norecursion=yes
d747cac4 DE	130	;;
d747cac4 DE	131	--verbose \| --v \| --verb*)
2a59259c	132	ml_verbose=--verbose
d747cac4 DE	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
953fbd65	164	# Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
d747cac4 DE	165	# ${with_target_subdir} = "." for native, otherwise target alias.
d747cac4 DE	166	if [ "${with_target_subdir}" = "." ]; then
953fbd65	167	if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
d747cac4 DE	168	ml_toplevel_p=yes
	169	fi
	170	else
953fbd65	171	if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
d747cac4 DE	172	ml_toplevel_p=yes
	173	fi
	174	fi
	175	else
953fbd65 DE	176	# Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
953fbd65 DE	177	if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
d747cac4 DE	178	ml_toplevel_p=yes
	179	fi
	180	fi
	181	fi
	182
	183	# If this is the library's top level directory, set multidirs to the
	184	# multilib subdirs to support. This lives at the top because we need
d1265690	185	# `multidirs' set right away.
d747cac4 DE	186
	187	if [ "${ml_toplevel_p}" = yes ]; then
	188
d1265690 MM	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} ${dir}"
	199	fi
	200	fi
	201	done
	202
d747cac4	203	case "${target}" in
3130a391	204	arc--elf)
d1265690	205	if [ x$enable_biendian != xyes ]
d747cac4	206	then
d1265690	207	old_multidirs=${multidirs}
3130a391	208	multidirs=""
d747cac4	209	for x in ${old_multidirs}; do
d1265690	210	case "${x}" in
3130a391 NC	211	be) : ;;
3130a391 NC	212	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	213	esac
	214	done
	215	fi
d1265690	216	;;
3130a391 NC	217	m32r--)
	218	if [ x$enable_m32rx = xno ]
	219	then
	220	old_multidirs=${multidirs}
	221	multidirs=""
	222	for x in ${old_multidirs}; do
	223	case "${x}" in
	224	m32rx) : ;;
	225	*) multidirs="${multidirs} ${x}" ;;
	226	esac
	227	done
	228	fi
	229	;;
	230	m68--*)
	231	if [ x$enable_softfloat = xno ]
d747cac4 DE	232	then
	233	old_multidirs="${multidirs}"
	234	multidirs=""
	235	for x in ${old_multidirs}; do
	236	case "$x" in
3130a391 NC	237	soft-float ) : ;;
3130a391 NC	238	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	239	esac
	240	done
	241	fi
3130a391	242	if [ x$enable_m68881 = xno ]
d747cac4 DE	243	then
	244	old_multidirs="${multidirs}"
	245	multidirs=""
	246	for x in ${old_multidirs}; do
	247	case "$x" in
3130a391 NC	248	m68881 ) : ;;
3130a391 NC	249	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	250	esac
	251	done
	252	fi
3130a391	253	if [ x$enable_m68000 = xno ]
d747cac4 DE	254	then
	255	old_multidirs="${multidirs}"
	256	multidirs=""
	257	for x in ${old_multidirs}; do
	258	case "$x" in
3130a391 NC	259	m68000 ) : ;;
	260	*) multidirs="${multidirs} ${x}" ;;
	261	esac
	262	done
	263	fi
	264	if [ x$enable_m68020 = xno ]
	265	then
	266	old_multidirs="${multidirs}"
	267	multidirs=""
	268	for x in ${old_multidirs}; do
	269	case "$x" in
	270	m68020 ) : ;;
	271	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	272	esac
	273	done
	274	fi
	275	;;
3130a391 NC	276	mips--*)
3130a391 NC	277	if [ x$enable_single_float = xno ]
d747cac4 DE	278	then
	279	old_multidirs="${multidirs}"
	280	multidirs=""
	281	for x in ${old_multidirs}; do
	282	case "$x" in
3130a391 NC	283	single ) : ;;
3130a391 NC	284	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	285	esac
	286	done
	287	fi
3130a391	288	if [ x$enable_biendian = xno ]
d747cac4 DE	289	then
	290	old_multidirs="${multidirs}"
	291	multidirs=""
	292	for x in ${old_multidirs}; do
	293	case "$x" in
3130a391 NC	294	el ) : ;;
	295	eb ) : ;;
	296	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	297	esac
	298	done
	299	fi
3130a391	300	if [ x$enable_softfloat = xno ]
d747cac4 DE	301	then
	302	old_multidirs="${multidirs}"
	303	multidirs=""
	304	for x in ${old_multidirs}; do
	305	case "$x" in
3130a391 NC	306	soft-float ) : ;;
3130a391 NC	307	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	308	esac
	309	done
	310	fi
3130a391 NC	311	;;
	312	powerpc--* \| rs6000--*)
	313	if [ x$enable_softfloat = xno ]
d747cac4 DE	314	then
	315	old_multidirs="${multidirs}"
	316	multidirs=""
	317	for x in ${old_multidirs}; do
	318	case "$x" in
3130a391 NC	319	soft-float ) : ;;
3130a391 NC	320	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	321	esac
	322	done
	323	fi
3130a391	324	if [ x$enable_powercpu = xno ]
d747cac4 DE	325	then
	326	old_multidirs="${multidirs}"
	327	multidirs=""
	328	for x in ${old_multidirs}; do
	329	case "$x" in
3130a391 NC	330	power \| /power \| /power/* ) : ;;
3130a391 NC	331	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	332	esac
	333	done
	334	fi
3130a391	335	if [ x$enable_powerpccpu = xno ]
d747cac4 DE	336	then
	337	old_multidirs="${multidirs}"
	338	multidirs=""
	339	for x in ${old_multidirs}; do
	340	case "$x" in
3130a391 NC	341	powerpc ) : ;;
3130a391 NC	342	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	343	esac
	344	done
	345	fi
3130a391	346	if [ x$enable_powerpcos = xno ]
d747cac4 DE	347	then
	348	old_multidirs="${multidirs}"
	349	multidirs=""
	350	for x in ${old_multidirs}; do
	351	case "$x" in
3130a391 NC	352	mcall-linux \| mcall-solaris ) : ;;
3130a391 NC	353	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	354	esac
	355	done
	356	fi
3130a391	357	if [ x$enable_biendian = xno ]
d747cac4 DE	358	then
	359	old_multidirs="${multidirs}"
	360	multidirs=""
	361	for x in ${old_multidirs}; do
	362	case "$x" in
3130a391 NC	363	mlittle \| mbig ) : ;;
3130a391 NC	364	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	365	esac
	366	done
	367	fi
d1265690	368	if [ x$enable_sysv = xno ]
d747cac4 DE	369	then
	370	old_multidirs="${multidirs}"
	371	multidirs=""
	372	for x in ${old_multidirs}; do
	373	case "$x" in
3130a391 NC	374	mcall-sysv ) : ;;
3130a391 NC	375	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	376	esac
	377	done
	378	fi
	379	if [ x$enable_aix = xno ]
	380	then
	381	old_multidirs="${multidirs}"
	382	multidirs=""
	383	for x in ${old_multidirs}; do
	384	case "$x" in
3130a391 NC	385	mcall-aix ) : ;;
3130a391 NC	386	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	387	esac
	388	done
	389	fi
	390	;;
d747cac4 DE	391	esac
d747cac4 DE	392
3130a391 NC	393	# Remove extraneous blanks from multidirs.
	394	# Tests like `if [ -n "$multidirs" ]' require it.
	395	multidirs=`echo "$multidirs" \| sed -e 's/^[ ][ ]//' -e 's/[ ][ ]$//' -e 's/[ ][ ]*/ /g'`
	396
d747cac4 DE	397	# Add code to library's top level makefile to handle building the multilib
	398	# subdirs.
	399
	400	cat > Multi.tem <<\EOF
	401
	402	# FIXME: There should be an @-sign in front of the `if'.
	403	# Leave out until this is tested a bit more.
	404	multi-do:
	405	if [ -z "$(MULTIDIRS)" ]; then \
	406	true; \
	407	else \
	408	rootpre=`pwd`/; export rootpre; \
	409	srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
	410	lib=`echo $${rootpre} \| sed -e 's,^./\([^/][^/]\)/$$,\1,'`; \
	411	compiler="$(CC)"; \
	412	for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
	413	dir=`echo $$i \| sed -e 's/;.*$$//'`; \
	414	if [ "$${dir}" = "." ]; then \
	415	true; \
	416	else \
	417	if [ -d ../$${dir}/$${lib} ]; then \
	418	flags=`echo $$i \| sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
	419	if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
	420	CFLAGS="$(CFLAGS) $${flags}" \
	421	CXXFLAGS="$(CXXFLAGS) $${flags}" \
	422	LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
	423	LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
	424	$(DO)); then \
	425	true; \
	426	else \
	427	exit 1; \
	428	fi; \
	429	else true; \
	430	fi; \
	431	fi; \
	432	done; \
	433	fi
	434
	435	# FIXME: There should be an @-sign in front of the `if'.
	436	# Leave out until this is tested a bit more.
	437	multi-clean:
	438	if [ -z "$(MULTIDIRS)" ]; then \
	439	true; \
	440	else \
d1265690	441	lib=`pwd \| sed -e 's,^./\([^/][^/]\)$$,\1,'`; \
d747cac4 DE	442	for dir in Makefile $(MULTIDIRS); do \
	443	if [ -f ../$${dir}/$${lib}/Makefile ]; then \
	444	if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
	445	then true; \
	446	else exit 1; \
	447	fi; \
	448	else true; \
	449	fi; \
	450	done; \
	451	fi
	452	EOF
	453
	454	cat ${Makefile} Multi.tem > Makefile.tem
	455	rm -f ${Makefile} Multi.tem
	456	mv Makefile.tem ${Makefile}
	457
	458	fi # ${ml_toplevel_p} = yes
	459
2a59259c	460	if [ "${ml_verbose}" = --verbose ]; then
953fbd65	461	echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
d747cac4 DE	462	if [ "${ml_toplevel_p}" = yes ]; then
	463	echo "multidirs=${multidirs}"
	464	fi
	465	echo "with_multisubdir=${with_multisubdir}"
	466	fi
	467
	468	if [ "${srcdir}" = "." ]; then
	469	if [ "${with_target_subdir}" != "." ]; then
	470	ml_srcdotdot="../"
	471	else
	472	ml_srcdotdot=""
	473	fi
	474	else
	475	ml_srcdotdot=""
	476	fi
	477
	478	if [ -z "${with_multisubdir}" ]; then
	479	ml_subdir=
	480	ml_builddotdot=
	481	: # ml_srcdotdot= # already set
	482	else
	483	ml_subdir="/${with_multisubdir}"
	484	# The '[^/][^/]*' appears that way to work around a SunOS sed bug.
	485	ml_builddotdot=`echo ${with_multisubdir} \| sed -e 's:[^/][^/]*:..:g'`/
	486	if [ "$srcdir" = "." ]; then
	487	ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
	488	else
	489	: # ml_srcdotdot= # already set
	490	fi
	491	fi
	492
	493	if [ "${ml_toplevel_p}" = yes ]; then
	494	ml_do='$(MAKE)'
	495	ml_clean='$(MAKE)'
	496	else
	497	ml_do=true
	498	ml_clean=true
	499	fi
	500
	501	# TOP is used by newlib and should not be used elsewhere for this purpose.
	502	# MULTI{SRC,BUILD}TOP are the proper ones to use. MULTISRCTOP is empty
	503	# when srcdir != builddir. MULTIBUILDTOP is always some number of ../'s.
	504	# FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
	505	# delete TOP. Newlib may wish to continue to use TOP for its own purposes
	506	# of course.
	507	# MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
	508	# and lists the subdirectories to recurse into.
	509	# MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
	510	# (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
	511	# a leading '/'.
	512	# MULTIDO is used for targets like all, install, and check where
	513	# $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
	514	# MULTICLEAN is used for the *clean targets.
	515	#
	516	# ??? It is possible to merge MULTIDO and MULTICLEAN into one. They are
	517	# currently kept separate because we don't want the *clean targets to require
	518	# the existence of the compiler (which MULTIDO currently requires) and
	519	# therefore we'd have to record the directory options as well as names
	520	# (currently we just record the names and use --print-multi-lib to get the
	521	# options).
	522
	523	sed -e "s:^TOP[ ]=[ ]\([./]\)[ ]$:TOP = ${ml_builddotdot}\1:" \
	524	-e "s:^MULTISRCTOP[ ]=.$:MULTISRCTOP = ${ml_srcdotdot}:" \
	525	-e "s:^MULTIBUILDTOP[ ]=.$:MULTIBUILDTOP = ${ml_builddotdot}:" \
526	-e "s:^MULTIDIRS[ ]=.$:MULTIDIRS = ${multidirs}:" \
527	-e "s:^MULTISUBDIR[ ]=.$:MULTISUBDIR = ${ml_subdir}:" \
528	-e "s:^MULTIDO[ ]=.$:MULTIDO = $ml_do:" \
529	-e "s:^MULTICLEAN[ ]=.$:MULTICLEAN = $ml_clean:" \
530	${Makefile} > Makefile.tem
531	rm -f ${Makefile}
532	mv Makefile.tem ${Makefile}
533
534	# If this is the library's top level, configure each multilib subdir.
535	# This is done at the end because this is the loop that runs configure
536	# in each multilib subdir and it seemed reasonable to finish updating the
537	# Makefile before going on to configure the subdirs.
538
539	if [ "${ml_toplevel_p}" = yes ]; then
540
541	# We must freshly configure each subdirectory. This bit of code is
542	# actually partially stolen from the main configure script. FIXME.
543
2a59259c	544	if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
d747cac4	545
2a59259c	546	if [ "${ml_verbose}" = --verbose ]; then
d747cac4 DE	547	echo "Running configure in multilib subdirs ${multidirs}"
	548	echo "pwd: `pwd`"
	549	fi
	550
	551	ml_origdir=`pwd`
	552	ml_libdir=`echo $ml_origdir \| sed -e 's,^.*/,,'`
	553	# cd to top-level-build-dir/${with_target_subdir}
	554	cd ..
	555
2a59259c	556	for ml_dir in ${multidirs}; do
d747cac4	557
2a59259c DE	558	if [ "${ml_verbose}" = --verbose ]; then
2a59259c DE	559	echo "Running configure in multilib subdir ${ml_dir}"
d747cac4 DE	560	echo "pwd: `pwd`"
	561	fi
	562
2a59259c DE	563	if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
2a59259c DE	564	if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
d747cac4	565
2a59259c DE	566	# Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
2a59259c DE	567	dotdot=../`echo ${ml_dir} \| sed -e 's\|[^/]\|\|g' -e 's\|/\|../\|g'`
d747cac4 DE	568
	569	case ${srcdir} in
	570	".")
2a59259c	571	echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
d747cac4 DE	572	if [ "${with_target_subdir}" != "." ]; then
	573	ml_unsubdir="../"
	574	else
	575	ml_unsubdir=""
	576	fi
2a59259c	577	(cd ${ml_dir}/${ml_libdir};
d747cac4	578	../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
2a59259c DE	579	ml_newsrcdir="."
2a59259c DE	580	ml_srcdiroption=
d747cac4 DE	581	multisrctop=${dotdot}
	582	;;
	583	*)
	584	case "${srcdir}" in
	585	/*) # absolute path
2a59259c	586	ml_newsrcdir=${srcdir}
d747cac4 DE	587	;;
d747cac4 DE	588	*) # otherwise relative
2a59259c	589	ml_newsrcdir=${dotdot}${srcdir}
d747cac4 DE	590	;;
d747cac4 DE	591	esac
2a59259c	592	ml_srcdiroption="-srcdir=${ml_newsrcdir}"
d747cac4 DE	593	multisrctop=
	594	;;
	595	esac
	596
	597	case "${progname}" in
2a59259c DE	598	/*) ml_recprog=${progname} ;;
2a59259c DE	599	*) ml_recprog=${dotdot}${progname} ;;
d747cac4 DE	600	esac
	601
	602	# FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
	603	ML_POPDIR=`pwd`
2a59259c	604	cd ${ml_dir}/${ml_libdir}
d747cac4	605
2a59259c DE	606	if [ -f ${ml_newsrcdir}/configure ]; then
2a59259c DE	607	ml_recprog=${ml_newsrcdir}/configure
d747cac4	608	fi
2a59259c DE	609	if eval ${ml_config_shell} ${ml_recprog} \
	610	--with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
	611	${ml_arguments} ${ml_srcdiroption} ; then
d747cac4 DE	612	true
	613	else
	614	exit 1
	615	fi
	616
	617	cd ${ML_POPDIR}
	618
	619	done
	620
	621	cd ${ml_origdir}
	622	fi
	623
	624	fi # ${ml_toplevel_p} = yes
	625	fi # ${enable_multilib} = yes