[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.

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

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} ${x}" ;;
	    esac
	  done
	fi
	;;
# start-sanitize-m32rx
m32r-*-*)
	if [ x$enable_m32rx = xno ]
	then
	  old_multidirs=${multidirs}
	  multidirs=""
	  for x in ${old_multidirs}; do
	    case "${x}" in
	      *m32rx*) : ;;
	      *) multidirs="${multidirs} ${x}" ;;
	    esac
	  done
	fi
	;;
# end-sanitize-m32rx
m68*-*-*)
	if [ x$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 # ${enable_multilib} = yes
Commit	Line	Data
d747cac4 DE	1	# Configure fragment invoked in the post-target section for subdirs
	2	# wanting multilib support.
	3	#
	4	# It is advisable to support a few --enable/--disable options to let the
	5	# user select which libraries s/he really wants.
	6	#
	7	# Subdirectories wishing to use multilib should put the following lines
	8	# in the "post-target" section of configure.in.
	9	#
	10	# if [ "${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
10b2757b	102	ml_verbose=--verbose
2a59259c	103	for option in ${ml_arguments}
d747cac4 DE	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*)
2a59259c	130	ml_norecursion=yes
d747cac4	131	;;
10b2757b JL	132	--silent \| --sil* \| --quiet \| --q*)
	133	ml_verbose=--silent
	134	;;
d747cac4	135	--verbose \| --v \| --verb*)
2a59259c	136	ml_verbose=--verbose
d747cac4 DE	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
953fbd65	168	# Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
d747cac4 DE	169	# ${with_target_subdir} = "." for native, otherwise target alias.
d747cac4 DE	170	if [ "${with_target_subdir}" = "." ]; then
953fbd65	171	if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
d747cac4 DE	172	ml_toplevel_p=yes
	173	fi
	174	else
953fbd65	175	if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
d747cac4 DE	176	ml_toplevel_p=yes
	177	fi
	178	fi
	179	else
953fbd65 DE	180	# Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
953fbd65 DE	181	if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
d747cac4 DE	182	ml_toplevel_p=yes
	183	fi
	184	fi
	185	fi
	186
	187	# If this is the library's top level directory, set multidirs to the
	188	# multilib subdirs to support. This lives at the top because we need
d1265690	189	# `multidirs' set right away.
d747cac4 DE	190
	191	if [ "${ml_toplevel_p}" = yes ]; then
	192
d1265690 MM	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} ${dir}"
	203	fi
	204	fi
	205	done
	206
d747cac4	207	case "${target}" in
3130a391	208	arc--elf)
d1265690	209	if [ x$enable_biendian != xyes ]
d747cac4	210	then
d1265690	211	old_multidirs=${multidirs}
3130a391	212	multidirs=""
d747cac4	213	for x in ${old_multidirs}; do
d1265690	214	case "${x}" in
3130a391 NC	215	be) : ;;
3130a391 NC	216	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	217	esac
	218	done
	219	fi
d1265690	220	;;
10b2757b	221	# start-sanitize-m32rx
3130a391 NC	222	m32r--)
	223	if [ x$enable_m32rx = xno ]
	224	then
	225	old_multidirs=${multidirs}
	226	multidirs=""
	227	for x in ${old_multidirs}; do
	228	case "${x}" in
	229	m32rx) : ;;
	230	*) multidirs="${multidirs} ${x}" ;;
	231	esac
	232	done
	233	fi
	234	;;
10b2757b	235	# end-sanitize-m32rx
3130a391 NC	236	m68--*)
3130a391 NC	237	if [ x$enable_softfloat = xno ]
d747cac4 DE	238	then
	239	old_multidirs="${multidirs}"
	240	multidirs=""
	241	for x in ${old_multidirs}; do
	242	case "$x" in
3130a391 NC	243	soft-float ) : ;;
3130a391 NC	244	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	245	esac
	246	done
	247	fi
3130a391	248	if [ x$enable_m68881 = xno ]
d747cac4 DE	249	then
	250	old_multidirs="${multidirs}"
	251	multidirs=""
	252	for x in ${old_multidirs}; do
	253	case "$x" in
3130a391 NC	254	m68881 ) : ;;
3130a391 NC	255	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	256	esac
	257	done
	258	fi
3130a391	259	if [ x$enable_m68000 = xno ]
d747cac4 DE	260	then
	261	old_multidirs="${multidirs}"
	262	multidirs=""
	263	for x in ${old_multidirs}; do
	264	case "$x" in
3130a391 NC	265	m68000 ) : ;;
	266	*) multidirs="${multidirs} ${x}" ;;
	267	esac
	268	done
	269	fi
	270	if [ x$enable_m68020 = xno ]
	271	then
	272	old_multidirs="${multidirs}"
	273	multidirs=""
	274	for x in ${old_multidirs}; do
	275	case "$x" in
	276	m68020 ) : ;;
	277	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	278	esac
	279	done
	280	fi
	281	;;
3130a391 NC	282	mips--*)
3130a391 NC	283	if [ x$enable_single_float = xno ]
d747cac4 DE	284	then
	285	old_multidirs="${multidirs}"
	286	multidirs=""
	287	for x in ${old_multidirs}; do
	288	case "$x" in
3130a391 NC	289	single ) : ;;
3130a391 NC	290	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	291	esac
	292	done
	293	fi
3130a391	294	if [ x$enable_biendian = xno ]
d747cac4 DE	295	then
	296	old_multidirs="${multidirs}"
	297	multidirs=""
	298	for x in ${old_multidirs}; do
	299	case "$x" in
3130a391 NC	300	el ) : ;;
	301	eb ) : ;;
	302	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	303	esac
	304	done
	305	fi
3130a391	306	if [ x$enable_softfloat = xno ]
d747cac4 DE	307	then
	308	old_multidirs="${multidirs}"
	309	multidirs=""
	310	for x in ${old_multidirs}; do
	311	case "$x" in
3130a391 NC	312	soft-float ) : ;;
3130a391 NC	313	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	314	esac
	315	done
	316	fi
3130a391 NC	317	;;
	318	powerpc--* \| rs6000--*)
	319	if [ x$enable_softfloat = xno ]
d747cac4 DE	320	then
	321	old_multidirs="${multidirs}"
	322	multidirs=""
	323	for x in ${old_multidirs}; do
	324	case "$x" in
3130a391 NC	325	soft-float ) : ;;
3130a391 NC	326	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	327	esac
	328	done
	329	fi
3130a391	330	if [ x$enable_powercpu = xno ]
d747cac4 DE	331	then
	332	old_multidirs="${multidirs}"
	333	multidirs=""
	334	for x in ${old_multidirs}; do
	335	case "$x" in
3130a391 NC	336	power \| /power \| /power/* ) : ;;
3130a391 NC	337	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	338	esac
	339	done
	340	fi
3130a391	341	if [ x$enable_powerpccpu = xno ]
d747cac4 DE	342	then
	343	old_multidirs="${multidirs}"
	344	multidirs=""
	345	for x in ${old_multidirs}; do
	346	case "$x" in
3130a391 NC	347	powerpc ) : ;;
3130a391 NC	348	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	349	esac
	350	done
	351	fi
3130a391	352	if [ x$enable_powerpcos = xno ]
d747cac4 DE	353	then
	354	old_multidirs="${multidirs}"
	355	multidirs=""
	356	for x in ${old_multidirs}; do
	357	case "$x" in
3130a391 NC	358	mcall-linux \| mcall-solaris ) : ;;
3130a391 NC	359	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	360	esac
	361	done
	362	fi
3130a391	363	if [ x$enable_biendian = xno ]
d747cac4 DE	364	then
	365	old_multidirs="${multidirs}"
	366	multidirs=""
	367	for x in ${old_multidirs}; do
	368	case "$x" in
3130a391 NC	369	mlittle \| mbig ) : ;;
3130a391 NC	370	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	371	esac
	372	done
	373	fi
d1265690	374	if [ x$enable_sysv = xno ]
d747cac4 DE	375	then
	376	old_multidirs="${multidirs}"
	377	multidirs=""
	378	for x in ${old_multidirs}; do
	379	case "$x" in
3130a391 NC	380	mcall-sysv ) : ;;
3130a391 NC	381	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	382	esac
	383	done
	384	fi
	385	if [ x$enable_aix = xno ]
	386	then
	387	old_multidirs="${multidirs}"
	388	multidirs=""
	389	for x in ${old_multidirs}; do
	390	case "$x" in
3130a391 NC	391	mcall-aix ) : ;;
3130a391 NC	392	*) multidirs="${multidirs} ${x}" ;;
d747cac4 DE	393	esac
	394	done
	395	fi
	396	;;
d747cac4 DE	397	esac
d747cac4 DE	398
3130a391 NC	399	# Remove extraneous blanks from multidirs.
	400	# Tests like `if [ -n "$multidirs" ]' require it.
	401	multidirs=`echo "$multidirs" \| sed -e 's/^[ ][ ]//' -e 's/[ ][ ]$//' -e 's/[ ][ ]*/ /g'`
	402
d747cac4 DE	403	# Add code to library's top level makefile to handle building the multilib
	404	# subdirs.
	405
	406	cat > Multi.tem <<\EOF
	407
	408	# FIXME: There should be an @-sign in front of the `if'.
	409	# Leave out until this is tested a bit more.
	410	multi-do:
	411	if [ -z "$(MULTIDIRS)" ]; then \
	412	true; \
	413	else \
	414	rootpre=`pwd`/; export rootpre; \
	415	srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
	416	lib=`echo $${rootpre} \| sed -e 's,^./\([^/][^/]\)/$$,\1,'`; \
	417	compiler="$(CC)"; \
	418	for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
	419	dir=`echo $$i \| sed -e 's/;.*$$//'`; \
	420	if [ "$${dir}" = "." ]; then \
	421	true; \
	422	else \
	423	if [ -d ../$${dir}/$${lib} ]; then \
	424	flags=`echo $$i \| sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
	425	if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
	426	CFLAGS="$(CFLAGS) $${flags}" \
	427	CXXFLAGS="$(CXXFLAGS) $${flags}" \
	428	LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
	429	LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
10b2757b	430	LDFLAGS="$(LDFLAGS) $${flags}" \
d747cac4 DE	431	$(DO)); then \
	432	true; \
	433	else \
	434	exit 1; \
	435	fi; \
	436	else true; \
	437	fi; \
	438	fi; \
	439	done; \
	440	fi
	441
	442	# FIXME: There should be an @-sign in front of the `if'.
	443	# Leave out until this is tested a bit more.
	444	multi-clean:
	445	if [ -z "$(MULTIDIRS)" ]; then \
	446	true; \
	447	else \
d1265690	448	lib=`pwd \| sed -e 's,^./\([^/][^/]\)$$,\1,'`; \
d747cac4 DE	449	for dir in Makefile $(MULTIDIRS); do \
	450	if [ -f ../$${dir}/$${lib}/Makefile ]; then \
	451	if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
	452	then true; \
	453	else exit 1; \
	454	fi; \
	455	else true; \
	456	fi; \
	457	done; \
	458	fi
	459	EOF
	460
	461	cat ${Makefile} Multi.tem > Makefile.tem
	462	rm -f ${Makefile} Multi.tem
	463	mv Makefile.tem ${Makefile}
	464
	465	fi # ${ml_toplevel_p} = yes
	466
2a59259c	467	if [ "${ml_verbose}" = --verbose ]; then
953fbd65	468	echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
d747cac4 DE	469	if [ "${ml_toplevel_p}" = yes ]; then
	470	echo "multidirs=${multidirs}"
	471	fi
	472	echo "with_multisubdir=${with_multisubdir}"
	473	fi
	474
	475	if [ "${srcdir}" = "." ]; then
	476	if [ "${with_target_subdir}" != "." ]; then
	477	ml_srcdotdot="../"
	478	else
	479	ml_srcdotdot=""
	480	fi
	481	else
	482	ml_srcdotdot=""
	483	fi
	484
	485	if [ -z "${with_multisubdir}" ]; then
	486	ml_subdir=
	487	ml_builddotdot=
	488	: # ml_srcdotdot= # already set
	489	else
	490	ml_subdir="/${with_multisubdir}"
	491	# The '[^/][^/]*' appears that way to work around a SunOS sed bug.
	492	ml_builddotdot=`echo ${with_multisubdir} \| sed -e 's:[^/][^/]*:..:g'`/
	493	if [ "$srcdir" = "." ]; then
	494	ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
	495	else
	496	: # ml_srcdotdot= # already set
	497	fi
	498	fi
	499
	500	if [ "${ml_toplevel_p}" = yes ]; then
	501	ml_do='$(MAKE)'
	502	ml_clean='$(MAKE)'
	503	else
	504	ml_do=true
	505	ml_clean=true
	506	fi
	507
	508	# TOP is used by newlib and should not be used elsewhere for this purpose.
	509	# MULTI{SRC,BUILD}TOP are the proper ones to use. MULTISRCTOP is empty
	510	# when srcdir != builddir. MULTIBUILDTOP is always some number of ../'s.
	511	# FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
	512	# delete TOP. Newlib may wish to continue to use TOP for its own purposes
	513	# of course.
	514	# MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
	515	# and lists the subdirectories to recurse into.
	516	# MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
	517	# (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
	518	# a leading '/'.
	519	# MULTIDO is used for targets like all, install, and check where
	520	# $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
	521	# MULTICLEAN is used for the *clean targets.
	522	#
	523	# ??? It is possible to merge MULTIDO and MULTICLEAN into one. They are
	524	# currently kept separate because we don't want the *clean targets to require
	525	# the existence of the compiler (which MULTIDO currently requires) and
	526	# therefore we'd have to record the directory options as well as names
	527	# (currently we just record the names and use --print-multi-lib to get the
	528	# options).
	529
	530	sed -e "s:^TOP[ ]=[ ]\([./]\)[ ]$:TOP = ${ml_builddotdot}\1:" \
	531	-e "s:^MULTISRCTOP[ ]=.$:MULTISRCTOP = ${ml_srcdotdot}:" \
	532	-e "s:^MULTIBUILDTOP[ ]=.$:MULTIBUILDTOP = ${ml_builddotdot}:" \
533	-e "s:^MULTIDIRS[ ]=.$:MULTIDIRS = ${multidirs}:" \
534	-e "s:^MULTISUBDIR[ ]=.$:MULTISUBDIR = ${ml_subdir}:" \
535	-e "s:^MULTIDO[ ]=.$:MULTIDO = $ml_do:" \
536	-e "s:^MULTICLEAN[ ]=.$:MULTICLEAN = $ml_clean:" \
537	${Makefile} > Makefile.tem
538	rm -f ${Makefile}
539	mv Makefile.tem ${Makefile}
540
541	# If this is the library's top level, configure each multilib subdir.
542	# This is done at the end because this is the loop that runs configure
543	# in each multilib subdir and it seemed reasonable to finish updating the
544	# Makefile before going on to configure the subdirs.
545
546	if [ "${ml_toplevel_p}" = yes ]; then
547
548	# We must freshly configure each subdirectory. This bit of code is
549	# actually partially stolen from the main configure script. FIXME.
550
2a59259c	551	if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
d747cac4	552
2a59259c	553	if [ "${ml_verbose}" = --verbose ]; then
d747cac4 DE	554	echo "Running configure in multilib subdirs ${multidirs}"
	555	echo "pwd: `pwd`"
	556	fi
	557
	558	ml_origdir=`pwd`
	559	ml_libdir=`echo $ml_origdir \| sed -e 's,^.*/,,'`
	560	# cd to top-level-build-dir/${with_target_subdir}
	561	cd ..
	562
2a59259c	563	for ml_dir in ${multidirs}; do
d747cac4	564
2a59259c DE	565	if [ "${ml_verbose}" = --verbose ]; then
2a59259c DE	566	echo "Running configure in multilib subdir ${ml_dir}"
d747cac4 DE	567	echo "pwd: `pwd`"
	568	fi
	569
2a59259c DE	570	if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
2a59259c DE	571	if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
d747cac4	572
2a59259c DE	573	# Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
2a59259c DE	574	dotdot=../`echo ${ml_dir} \| sed -e 's\|[^/]\|\|g' -e 's\|/\|../\|g'`
d747cac4 DE	575
	576	case ${srcdir} in
	577	".")
2a59259c	578	echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
d747cac4 DE	579	if [ "${with_target_subdir}" != "." ]; then
	580	ml_unsubdir="../"
	581	else
	582	ml_unsubdir=""
	583	fi
2a59259c	584	(cd ${ml_dir}/${ml_libdir};
d747cac4	585	../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
10b2757b JL	586	if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
	587	if [ x"${MAKE}" = x ]; then
	588	(cd ${ml_dir}/${ml_libdir}; make distclean)
	589	else
	590	(cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
	591	fi
	592	fi
2a59259c DE	593	ml_newsrcdir="."
2a59259c DE	594	ml_srcdiroption=
d747cac4 DE	595	multisrctop=${dotdot}
	596	;;
	597	*)
	598	case "${srcdir}" in
	599	/*) # absolute path
2a59259c	600	ml_newsrcdir=${srcdir}
d747cac4 DE	601	;;
d747cac4 DE	602	*) # otherwise relative
2a59259c	603	ml_newsrcdir=${dotdot}${srcdir}
d747cac4 DE	604	;;
d747cac4 DE	605	esac
2a59259c	606	ml_srcdiroption="-srcdir=${ml_newsrcdir}"
d747cac4 DE	607	multisrctop=
	608	;;
	609	esac
	610
	611	case "${progname}" in
2a59259c DE	612	/*) ml_recprog=${progname} ;;
2a59259c DE	613	*) ml_recprog=${dotdot}${progname} ;;
d747cac4 DE	614	esac
	615
	616	# FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
	617	ML_POPDIR=`pwd`
2a59259c	618	cd ${ml_dir}/${ml_libdir}
d747cac4	619
2a59259c DE	620	if [ -f ${ml_newsrcdir}/configure ]; then
2a59259c DE	621	ml_recprog=${ml_newsrcdir}/configure
d747cac4	622	fi
2a59259c DE	623	if eval ${ml_config_shell} ${ml_recprog} \
	624	--with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
	625	${ml_arguments} ${ml_srcdiroption} ; then
d747cac4 DE	626	true
	627	else
	628	exit 1
	629	fi
	630
	631	cd ${ML_POPDIR}
	632
	633	done
	634
	635	cd ${ml_origdir}
	636	fi
	637
	638	fi # ${ml_toplevel_p} = yes
	639	fi # ${enable_multilib} = yes