[thirdparty/gcc.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} ${x}" ;;
	    esac
	  done
	fi
	;;
m68*-*-*)
	if [ x$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
	case " $multidirs " in
	*" mabi=64 "*)
	  # We will not be able to create libraries with -mabi=64 if
	  # we cannot even link a trivial program.  It usually
	  # indicates the 64bit libraries are missing.
	  if echo 'main() {}' > conftest.c &&
	     ${CC-gcc} -mabi=64 conftest.c -o conftest; then
	    :
	  else
	    echo Could not link program with -mabi=64, disabling it.
	    old_multidirs="${multidirs}"
	    multidirs=""
	    for x in ${old_multidirs}; do
	      case "$x" in
	      *mabi=64* ) : ;;
	      *) multidirs="${multidirs} ${x}" ;;
	      esac
	    done
	  fi
	  rm -f conftest.c conftest
	  ;;
	esac
	;;
powerpc*-*-* | rs6000*-*-*)
	if [ x$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 # ${enable_multilib} = yes
Commit	Line	Data
28e9041c	1	# Configure fragment invoked in the post-target section for subdirs
	2	# wanting multilib support.
	3	#
	4	# It is advisable to support a few --enable/--disable options to let the
	5	# user select which libraries s/he really wants.
	6	#
	7	# Subdirectories wishing to use multilib should put the following lines
	8	# in the "post-target" section of configure.in.
	9	#
	10	# if [ "${srcdir}" = "." ] ; then
	11	# if [ "${with_target_subdir}" != "." ] ; then
	12	# . ${with_multisrctop}../../config-ml.in
	13	# else
	14	# . ${with_multisrctop}../config-ml.in
	15	# fi
	16	# else
	17	# . ${srcdir}/../config-ml.in
	18	# fi
	19	#
	20	# See librx/configure.in in the libg++ distribution for an example of how
	21	# to handle autoconf'd libraries.
	22	#
	23	# Things are complicated because 6 separate cases must be handled:
	24	# 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
	25	#
	26	# srcdir=. is special. It must handle make programs that don't handle VPATH.
	27	# To implement this, a symlink tree is built for each library and for each
	28	# multilib subdir.
	29	#
	30	# The build tree is layed out as
	31	#
	32	# ./
	33	# libg++
	34	# newlib
	35	# m68020/
	36	# libg++
	37	# newlib
	38	# m68881/
	39	# libg++
	40	# newlib
	41	#
	42	# The nice feature about this arrangement is that inter-library references
	43	# in the build tree work without having to care where you are. Note that
	44	# inter-library references also work in the source tree because symlink trees
	45	# are built when srcdir=.
	46	#
	47	# Unfortunately, trying to access the libraries in the build tree requires
	48	# the user to manually choose which library to use as GCC won't be able to
	49	# find the right one. This is viewed as the lesser of two evils.
	50	#
	51	# Configure variables:
	52	# ${with_target_subdir} = "." for native, or ${target_alias} for cross.
	53	# Set by top level Makefile.
	54	# ${with_multisrctop} = how many levels of multilibs there are in the source
	55	# tree. It exists to handle the case of configuring in the source tree:
	56	# ${srcdir} is not constant.
	57	# ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
	58	#
	59	# Makefile variables:
	60	# MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
	61	# (FIXME: note that this is different than ${with_multisrctop}. Check out.).
	62	# MULTIBUILDTOP = number of multilib levels in build tree
	63	# MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
	64	# (only defined in each library's main Makefile).
65	# MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
66	# (only defined in each multilib subdir).
67
68	# FIXME: Multilib is currently disabled by default for everything other than
69	# newlib. It is up to each target to turn on multilib support for the other
70	# libraries as desired.
71
72	# We have to handle being invoked by both Cygnus configure and Autoconf.
73	#
74	# Cygnus configure incoming variables:
75	# srcdir, subdir, target, arguments
76	#
77	# Autoconf incoming variables:
78	# srcdir, target, ac_configure_args
79	#
80	# We could figure srcdir and target out, but we'd have to do work that
81	# our caller has already done to figure them out and requiring these two
82	# seems reasonable.
83
84	if [ -n "${ac_configure_args}" ]; then
85	Makefile=${ac_file-Makefile}
86	ml_config_shell=${CONFIG_SHELL-/bin/sh}
87	ml_arguments="${ac_configure_args}"
88	ml_realsrcdir=${srcdir}
89	else
90	Makefile=${Makefile-Makefile}
91	ml_config_shell=${config_shell-/bin/sh}
92	ml_arguments="${arguments}"
93	if [ -n "${subdir}" -a "${subdir}" != "." ] ; then
94	ml_realsrcdir=${srcdir}/${subdir}
95	else
96	ml_realsrcdir=${srcdir}
97	fi
98	fi
99
100	# Scan all the arguments and set all the ones we need.
101
26d9569a	102	ml_verbose=--verbose
28e9041c	103	for option in ${ml_arguments}
	104	do
	105	case $option in
	106	--*) ;;
	107	-*) option=-$option ;;
	108	esac
	109
	110	case $option in
	111	--=)
	112	optarg=`echo $option \| sed -e 's/^[^=]*=//'`
	113	;;
	114	esac
	115
	116	case $option in
	117	--disable-*)
	118	enableopt=`echo ${option} \| sed 's:^--disable-:enable_:;s:-:_:g'`
	119	eval $enableopt=no
	120	;;
	121	--enable-*)
	122	case "$option" in
	123	=) ;;
	124	*) optarg=yes ;;
	125	esac
	126	enableopt=`echo ${option} \| sed 's:^--::;s:=.*$::;s:-:_:g'`
	127	eval $enableopt="$optarg"
	128	;;
	129	--norecursion \| --no*)
	130	ml_norecursion=yes
	131	;;
26d9569a	132	--silent \| --sil* \| --quiet \| --q*)
	133	ml_verbose=--silent
	134	;;
28e9041c	135	--verbose \| --v \| --verb*)
	136	ml_verbose=--verbose
	137	;;
	138	--with-*)
	139	case "$option" in
	140	=) ;;
	141	*) optarg=yes ;;
	142	esac
	143	withopt=`echo ${option} \| sed 's:^--::;s:=.*$::;s:-:_:g'`
	144	eval $withopt="$optarg"
	145	;;
	146	--without-*)
	147	withopt=`echo ${option} \| sed 's:^--::;s:out::;s:-:_:g'`
	148	eval $withopt=no
	149	;;
	150	esac
	151	done
	152
	153	# Only do this if --enable-multilib.
	154	if [ "${enable_multilib}" = yes ]; then
	155
	156	# Compute whether this is the library's top level directory
	157	# (ie: not a multilib subdirectory, and not a subdirectory like libg++/src).
	158	# ${with_multisubdir} tells us we're in the right branch, but we could be
	159	# in a subdir of that.
	160	# ??? The previous version could void this test by separating the process into
	161	# two files: one that only the library's toplevel configure.in ran (to
	162	# configure the multilib subdirs), and another that all configure.in's ran to
	163	# update the Makefile. It seemed reasonable to collapse all multilib support
	164	# into one file, but it does leave us with having to perform this test.
	165	ml_toplevel_p=no
	166	if [ -z "${with_multisubdir}" ]; then
	167	if [ "${srcdir}" = "." ]; then
	168	# Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
	169	# ${with_target_subdir} = "." for native, otherwise target alias.
	170	if [ "${with_target_subdir}" = "." ]; then
	171	if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
	172	ml_toplevel_p=yes
	173	fi
	174	else
	175	if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
	176	ml_toplevel_p=yes
	177	fi
	178	fi
	179	else
	180	# Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
	181	if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
	182	ml_toplevel_p=yes
	183	fi
	184	fi
	185	fi
	186
	187	# If this is the library's top level directory, set multidirs to the
	188	# multilib subdirs to support. This lives at the top because we need
	189	# `multidirs' set right away.
	190
	191	if [ "${ml_toplevel_p}" = yes ]; then
	192
	193	multidirs=
	194	for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
	195	dir=`echo $i \| sed -e 's/;.*$//'`
	196	if [ "${dir}" = "." ]; then
	197	true
	198	else
199	if [ -z "${multidirs}" ]; then
200	multidirs="${dir}"
201	else
202	multidirs="${multidirs} ${dir}"
203	fi
204	fi
205	done
206
207	case "${target}" in
208	arc--elf)
209	if [ x$enable_biendian != xyes ]
210	then
211	old_multidirs=${multidirs}
212	multidirs=""
213	for x in ${old_multidirs}; do
214	case "${x}" in
215	be) : ;;
216	*) multidirs="${multidirs} ${x}" ;;
217	esac
218	done
219	fi
220	;;
221	m68--*)
222	if [ x$enable_softfloat = xno ]
223	then
224	old_multidirs="${multidirs}"
225	multidirs=""
226	for x in ${old_multidirs}; do
227	case "$x" in
228	soft-float ) : ;;
229	*) multidirs="${multidirs} ${x}" ;;
230	esac
231	done
232	fi
233	if [ x$enable_m68881 = xno ]
234	then
235	old_multidirs="${multidirs}"
236	multidirs=""
237	for x in ${old_multidirs}; do
238	case "$x" in
239	m68881 ) : ;;
240	*) multidirs="${multidirs} ${x}" ;;
241	esac
242	done
243	fi
244	if [ x$enable_m68000 = xno ]
245	then
246	old_multidirs="${multidirs}"
247	multidirs=""
248	for x in ${old_multidirs}; do
249	case "$x" in
250	m68000 ) : ;;
251	*) multidirs="${multidirs} ${x}" ;;
252	esac
253	done
254	fi
255	if [ x$enable_m68020 = xno ]
256	then
257	old_multidirs="${multidirs}"
258	multidirs=""
259	for x in ${old_multidirs}; do
260	case "$x" in
261	m68020 ) : ;;
262	*) multidirs="${multidirs} ${x}" ;;
263	esac
264	done
265	fi
266	;;
267	mips--*)
268	if [ x$enable_single_float = xno ]
269	then
270	old_multidirs="${multidirs}"
271	multidirs=""
272	for x in ${old_multidirs}; do
273	case "$x" in
274	single ) : ;;
275	*) multidirs="${multidirs} ${x}" ;;
276	esac
277	done
278	fi
279	if [ x$enable_biendian = xno ]
280	then
281	old_multidirs="${multidirs}"
282	multidirs=""
283	for x in ${old_multidirs}; do
284	case "$x" in
285	el ) : ;;
286	eb ) : ;;
287	*) multidirs="${multidirs} ${x}" ;;
288	esac
289	done
290	fi
291	if [ x$enable_softfloat = xno ]
292	then
293	old_multidirs="${multidirs}"
294	multidirs=""
295	for x in ${old_multidirs}; do
296	case "$x" in
297	soft-float ) : ;;
298	*) multidirs="${multidirs} ${x}" ;;
299	esac
300	done
301	fi
a48ef8ee	302	case " $multidirs " in
	303	" mabi=64 ")
	304	# We will not be able to create libraries with -mabi=64 if
	305	# we cannot even link a trivial program. It usually
	306	# indicates the 64bit libraries are missing.
	307	if echo 'main() {}' > conftest.c &&
	308	${CC-gcc} -mabi=64 conftest.c -o conftest; then
	309	:
	310	else
	311	echo Could not link program with -mabi=64, disabling it.
	312	old_multidirs="${multidirs}"
	313	multidirs=""
	314	for x in ${old_multidirs}; do
	315	case "$x" in
	316	mabi=64 ) : ;;
	317	*) multidirs="${multidirs} ${x}" ;;
	318	esac
	319	done
	320	fi
	321	rm -f conftest.c conftest
	322	;;
	323	esac
28e9041c	324	;;
	325	powerpc--* \| rs6000--*)
	326	if [ x$enable_softfloat = xno ]
	327	then
	328	old_multidirs="${multidirs}"
	329	multidirs=""
	330	for x in ${old_multidirs}; do
	331	case "$x" in
	332	soft-float ) : ;;
	333	*) multidirs="${multidirs} ${x}" ;;
	334	esac
	335	done
	336	fi
	337	if [ x$enable_powercpu = xno ]
	338	then
	339	old_multidirs="${multidirs}"
	340	multidirs=""
	341	for x in ${old_multidirs}; do
	342	case "$x" in
	343	power \| /power \| /power/* ) : ;;
	344	*) multidirs="${multidirs} ${x}" ;;
	345	esac
	346	done
	347	fi
	348	if [ x$enable_powerpccpu = xno ]
	349	then
	350	old_multidirs="${multidirs}"
	351	multidirs=""
	352	for x in ${old_multidirs}; do
	353	case "$x" in
	354	powerpc ) : ;;
	355	*) multidirs="${multidirs} ${x}" ;;
	356	esac
	357	done
	358	fi
	359	if [ x$enable_powerpcos = xno ]
	360	then
	361	old_multidirs="${multidirs}"
	362	multidirs=""
	363	for x in ${old_multidirs}; do
	364	case "$x" in
	365	mcall-linux \| mcall-solaris ) : ;;
	366	*) multidirs="${multidirs} ${x}" ;;
	367	esac
	368	done
	369	fi
	370	if [ x$enable_biendian = xno ]
	371	then
	372	old_multidirs="${multidirs}"
	373	multidirs=""
	374	for x in ${old_multidirs}; do
	375	case "$x" in
	376	mlittle \| mbig ) : ;;
	377	*) multidirs="${multidirs} ${x}" ;;
	378	esac
	379	done
	380	fi
	381	if [ x$enable_sysv = xno ]
	382	then
	383	old_multidirs="${multidirs}"
	384	multidirs=""
	385	for x in ${old_multidirs}; do
	386	case "$x" in
	387	mcall-sysv ) : ;;
388	*) multidirs="${multidirs} ${x}" ;;
389	esac
390	done
391	fi
392	if [ x$enable_aix = xno ]
393	then
394	old_multidirs="${multidirs}"
395	multidirs=""
396	for x in ${old_multidirs}; do
397	case "$x" in
398	mcall-aix ) : ;;
399	*) multidirs="${multidirs} ${x}" ;;
400	esac
401	done
402	fi
403	;;
404	esac
405
406	# Remove extraneous blanks from multidirs.
407	# Tests like `if [ -n "$multidirs" ]' require it.
408	multidirs=`echo "$multidirs" \| sed -e 's/^[ ][ ]//' -e 's/[ ][ ]$//' -e 's/[ ][ ]*/ /g'`
409
410	# Add code to library's top level makefile to handle building the multilib
411	# subdirs.
412
413	cat > Multi.tem <<\EOF
414
415	# FIXME: There should be an @-sign in front of the `if'.
416	# Leave out until this is tested a bit more.
417	multi-do:
418	if [ -z "$(MULTIDIRS)" ]; then \
419	true; \
420	else \
421	rootpre=`pwd`/; export rootpre; \
422	srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
423	lib=`echo $${rootpre} \| sed -e 's,^./\([^/][^/]\)/$$,\1,'`; \
424	compiler="$(CC)"; \
425	for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
426	dir=`echo $$i \| sed -e 's/;.*$$//'`; \
427	if [ "$${dir}" = "." ]; then \
428	true; \
429	else \
430	if [ -d ../$${dir}/$${lib} ]; then \
431	flags=`echo $$i \| sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
432	if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
433	CFLAGS="$(CFLAGS) $${flags}" \
434	CXXFLAGS="$(CXXFLAGS) $${flags}" \
435	LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
436	LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
c0a2f1ac	437	LDFLAGS="$(LDFLAGS) $${flags}" \
28e9041c	438	$(DO)); then \
	439	true; \
	440	else \
	441	exit 1; \
	442	fi; \
	443	else true; \
	444	fi; \
	445	fi; \
	446	done; \
	447	fi
	448
	449	# FIXME: There should be an @-sign in front of the `if'.
	450	# Leave out until this is tested a bit more.
	451	multi-clean:
	452	if [ -z "$(MULTIDIRS)" ]; then \
	453	true; \
	454	else \
	455	lib=`pwd \| sed -e 's,^./\([^/][^/]\)$$,\1,'`; \
	456	for dir in Makefile $(MULTIDIRS); do \
	457	if [ -f ../$${dir}/$${lib}/Makefile ]; then \
	458	if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
	459	then true; \
	460	else exit 1; \
	461	fi; \
	462	else true; \
	463	fi; \
	464	done; \
	465	fi
	466	EOF
	467
	468	cat ${Makefile} Multi.tem > Makefile.tem
	469	rm -f ${Makefile} Multi.tem
	470	mv Makefile.tem ${Makefile}
	471
	472	fi # ${ml_toplevel_p} = yes
	473
	474	if [ "${ml_verbose}" = --verbose ]; then
	475	echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
	476	if [ "${ml_toplevel_p}" = yes ]; then
	477	echo "multidirs=${multidirs}"
	478	fi
	479	echo "with_multisubdir=${with_multisubdir}"
	480	fi
	481
	482	if [ "${srcdir}" = "." ]; then
	483	if [ "${with_target_subdir}" != "." ]; then
	484	ml_srcdotdot="../"
	485	else
	486	ml_srcdotdot=""
	487	fi
	488	else
	489	ml_srcdotdot=""
	490	fi
	491
	492	if [ -z "${with_multisubdir}" ]; then
	493	ml_subdir=
	494	ml_builddotdot=
	495	: # ml_srcdotdot= # already set
	496	else
	497	ml_subdir="/${with_multisubdir}"
	498	# The '[^/][^/]*' appears that way to work around a SunOS sed bug.
	499	ml_builddotdot=`echo ${with_multisubdir} \| sed -e 's:[^/][^/]*:..:g'`/
	500	if [ "$srcdir" = "." ]; then
	501	ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
502	else
503	: # ml_srcdotdot= # already set
504	fi
505	fi
506
507	if [ "${ml_toplevel_p}" = yes ]; then
508	ml_do='$(MAKE)'
509	ml_clean='$(MAKE)'
510	else
511	ml_do=true
512	ml_clean=true
513	fi
514
515	# TOP is used by newlib and should not be used elsewhere for this purpose.
516	# MULTI{SRC,BUILD}TOP are the proper ones to use. MULTISRCTOP is empty
517	# when srcdir != builddir. MULTIBUILDTOP is always some number of ../'s.
518	# FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
519	# delete TOP. Newlib may wish to continue to use TOP for its own purposes
520	# of course.
521	# MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
522	# and lists the subdirectories to recurse into.
523	# MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
524	# (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
525	# a leading '/'.
526	# MULTIDO is used for targets like all, install, and check where
527	# $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
528	# MULTICLEAN is used for the *clean targets.
529	#
530	# ??? It is possible to merge MULTIDO and MULTICLEAN into one. They are
531	# currently kept separate because we don't want the *clean targets to require
532	# the existence of the compiler (which MULTIDO currently requires) and
533	# therefore we'd have to record the directory options as well as names
534	# (currently we just record the names and use --print-multi-lib to get the
535	# options).
536
537	sed -e "s:^TOP[ ]=[ ]\([./]\)[ ]$:TOP = ${ml_builddotdot}\1:" \
538	-e "s:^MULTISRCTOP[ ]=.$:MULTISRCTOP = ${ml_srcdotdot}:" \
539	-e "s:^MULTIBUILDTOP[ ]=.$:MULTIBUILDTOP = ${ml_builddotdot}:" \
540	-e "s:^MULTIDIRS[ ]=.$:MULTIDIRS = ${multidirs}:" \
541	-e "s:^MULTISUBDIR[ ]=.$:MULTISUBDIR = ${ml_subdir}:" \
542	-e "s:^MULTIDO[ ]=.$:MULTIDO = $ml_do:" \
543	-e "s:^MULTICLEAN[ ]=.$:MULTICLEAN = $ml_clean:" \
544	${Makefile} > Makefile.tem
545	rm -f ${Makefile}
546	mv Makefile.tem ${Makefile}
547
548	# If this is the library's top level, configure each multilib subdir.
549	# This is done at the end because this is the loop that runs configure
550	# in each multilib subdir and it seemed reasonable to finish updating the
551	# Makefile before going on to configure the subdirs.
552
553	if [ "${ml_toplevel_p}" = yes ]; then
554
555	# We must freshly configure each subdirectory. This bit of code is
556	# actually partially stolen from the main configure script. FIXME.
557
558	if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
559
560	if [ "${ml_verbose}" = --verbose ]; then
561	echo "Running configure in multilib subdirs ${multidirs}"
562	echo "pwd: `pwd`"
563	fi
564
565	ml_origdir=`pwd`
566	ml_libdir=`echo $ml_origdir \| sed -e 's,^.*/,,'`
567	# cd to top-level-build-dir/${with_target_subdir}
568	cd ..
569
570	for ml_dir in ${multidirs}; do
571
572	if [ "${ml_verbose}" = --verbose ]; then
573	echo "Running configure in multilib subdir ${ml_dir}"
574	echo "pwd: `pwd`"
575	fi
576
577	if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi
578	if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
579
580	# Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
581	dotdot=../`echo ${ml_dir} \| sed -e 's\|[^/]\|\|g' -e 's\|/\|../\|g'`
582
583	case ${srcdir} in
584	".")
585	echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
586	if [ "${with_target_subdir}" != "." ]; then
587	ml_unsubdir="../"
588	else
589	ml_unsubdir=""
590	fi
591	(cd ${ml_dir}/${ml_libdir};
592	../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
1f7295a5	593	if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
	594	if [ x"${MAKE}" = x ]; then
	595	(cd ${ml_dir}/${ml_libdir}; make distclean)
	596	else
	597	(cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
	598	fi
	599	fi
28e9041c	600	ml_newsrcdir="."
	601	ml_srcdiroption=
	602	multisrctop=${dotdot}
	603	;;
	604	*)
	605	case "${srcdir}" in
	606	/*) # absolute path
	607	ml_newsrcdir=${srcdir}
	608	;;
	609	*) # otherwise relative
	610	ml_newsrcdir=${dotdot}${srcdir}
	611	;;
	612	esac
	613	ml_srcdiroption="-srcdir=${ml_newsrcdir}"
	614	multisrctop=
	615	;;
	616	esac
	617
	618	case "${progname}" in
	619	/*) ml_recprog=${progname} ;;
	620	*) ml_recprog=${dotdot}${progname} ;;
	621	esac
	622
	623	# FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
	624	ML_POPDIR=`pwd`
	625	cd ${ml_dir}/${ml_libdir}
	626
	627	if [ -f ${ml_newsrcdir}/configure ]; then
	628	ml_recprog=${ml_newsrcdir}/configure
	629	fi
	630	if eval ${ml_config_shell} ${ml_recprog} \
	631	--with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
	632	${ml_arguments} ${ml_srcdiroption} ; then
	633	true
	634	else
	635	exit 1
	636	fi
	637
	638	cd ${ML_POPDIR}
	639
	640	done
	641
	642	cd ${ml_origdir}
	643	fi
	644
	645	fi # ${ml_toplevel_p} = yes
	646	fi # ${enable_multilib} = yes