import gdb-1999-12-06 snapshot

[binutils.git] / gdb / configure.in

dnl Autoconf configure script for GDB, the GNU debugger.
dnl Copyright 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
dnl
dnl This file is part of GDB.
dnl 
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl 
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.
dnl 
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.13)dnl
AC_INIT(main.c)
AC_CONFIG_HEADER(config.h:config.in)

AC_PROG_CC
AC_AIX
AC_ISC_POSIX
AM_PROG_CC_STDC

AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/..)
AC_CANONICAL_SYSTEM

dnl gdb doesn't use gettext, but bfd does.  We call this to ensure we
dnl link with the correct libraries.
ALL_LINGUAS=
CY_GNU_GETTEXT

dnl List of object files added by configure.

CONFIG_OBS=
CONFIG_DEPS=
CONFIG_SRCS=

configdirs="doc testsuite"

AC_ARG_ENABLE(multi-ice,
[  --enable-multi-ice            Build the multi-ice-gdb-server],
[case "${enableval}" in
    yes ) enable_multi_ice="yes" ;;
    no)  enable_multi_ice="no" ;;
    *) AC_MSG_ERROR(Bad value for --enable-multi-ice: ${enableval}) ;;
  esac
])

if test "${enable_multi_ice}" = "yes"; then
  configdirs="${configdirs} multi-ice"
fi

dnl
changequote(,)dnl

. ${srcdir}/configure.host

. ${srcdir}/configure.tgt

dnl
changequote([,])dnl

AC_PROG_AWK
AC_PROG_INSTALL
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_PROG_YACC

AC_ARG_PROGRAM

AC_TYPE_SIGNAL

AC_HEADER_STDC

AC_CHECK_HEADERS(ctype.h curses.h endian.h link.h \
	memory.h objlist.h ptrace.h sgtty.h stddef.h stdlib.h \
	string.h sys/procfs.h sys/ptrace.h sys/reg.h \
	term.h termio.h termios.h unistd.h wait.h sys/wait.h \
	wchar.h wctype.h asm/debugreg.h sys/debugreg.h sys/select.h \
	time.h sys/ioctl.h)
AC_HEADER_STAT

AC_C_CONST

AC_CHECK_FUNCS(setpgid sbrk sigaction isascii bzero bcopy btowc poll sigprocmask)
AC_FUNC_ALLOCA

dnl See if ptrace.h provides the PTRACE_GETXFPREGS request.
dnl PTRACE_GETXFPREGS is a Cygnus invention, since we wrote our own
dnl Linux kernel patch for SSE support.  That patch may or may not
dnl actually make it into the official distribution.  If you find that
dnl years have gone by since this configure test was added, and Linux
dnl isn't using PTRACE_GETXFPREGS, that means that our patch didn't
dnl make it, and you can delete this code.
AC_MSG_CHECKING(for PTRACE_GETXFPREGS)
AC_CACHE_VAL(gdb_cv_have_ptrace_getxfpregs,
[AC_TRY_COMPILE([#include <sys/ptrace.h>],
		[PTRACE_GETXFPREGS;],
		[gdb_cv_have_ptrace_getxfpregs=yes],
		[gdb_cv_have_ptrace_getxfpregs=no])])
AC_MSG_RESULT($gdb_cv_have_ptrace_getxfpregs)
if test $gdb_cv_have_ptrace_getxfpregs = yes; then
  AC_DEFINE(HAVE_PTRACE_GETXFPREGS)
fi

AC_CHECK_LIB(socket, socketpair)
AC_CHECK_FUNCS(socketpair)


BFD_NEED_DECLARATION(malloc)
BFD_NEED_DECLARATION(realloc)
BFD_NEED_DECLARATION(free)
BFD_NEED_DECLARATION(strerror)
BFD_NEED_DECLARATION(strdup)
BFD_NEED_DECLARATION(strstr)


# The following save_state_t checkery is only necessary for HPUX 
# versions earlier than 10.20.  When those fade from memory, this 
# could be expunged. --jsm 1999-03-22

AC_MSG_CHECKING(for HPUX save_state structure)
AC_EGREP_HEADER(save_state_t, machine/save_state.h, 
                gdb_cv_hpux_savestate=yes, gdb_cv_hpux_savestate=no)
AC_EGREP_HEADER(ss_wide, machine/save_state.h, gdb_cv_hpux_sswide=yes,
                gdb_cv_hpux_sswide=no)
if test $gdb_cv_hpux_savestate = yes
then
  AC_DEFINE(HAVE_STRUCT_SAVE_STATE_T, 1)
fi
if test $gdb_cv_hpux_sswide = yes
then
  AC_DEFINE(HAVE_STRUCT_MEMBER_SS_WIDE, 1)
fi
AC_MSG_RESULT($gdb_cv_hpux_sswide)


# If we are configured native on GNU/Linux, work around problems with
# sys/procfs.h
# Also detect which type of /proc is in use, such as for Unixware.

if test "${target}" = "${host}"; then
  gdb_cv_hostos_is_solaris=no
  case "${host}" in
  i[[3456]]86-*-linux*)
	AC_DEFINE(START_INFERIOR_TRAPS_EXPECTED,2)
	AC_DEFINE(sys_quotactl)
	;;
  *-*-solaris*)
	gdb_cv_hostos_is_solaris=yes ;;
  esac
  AC_MSG_CHECKING(for directory proc entries)
# The [gdb_host != sun4sol2] hack is because Solaris does provide the
# multiple procfs files as of Solaris 2.6, but GDB can't use it right now.
  if test "$ac_cv_header_sys_procfs_h" = yes -a \
          "$gdb_cv_hostos_is_solaris" = no \
  -a -d /proc/$$ \
  -a -f /proc/$$/ctl \
  -a -f /proc/$$/as \
  -a -f /proc/$$/map \
  -a -f /proc/$$/status; then
    AC_MSG_RESULT(yes)
    AC_DEFINE(HAVE_MULTIPLE_PROC_FDS)
  else
    AC_MSG_RESULT(no)
  fi
fi

if test "$ac_cv_header_sys_procfs_h" = yes; then
  BFD_HAVE_SYS_PROCFS_TYPE(pstatus_t)
  BFD_HAVE_SYS_PROCFS_TYPE(prrun_t)
  BFD_HAVE_SYS_PROCFS_TYPE(gregset_t)
  BFD_HAVE_SYS_PROCFS_TYPE(fpregset_t)

  dnl Check for PIOCSET ioctl entry 

  AC_MSG_CHECKING(for PIOCSET ioctl entry in sys/procfs.h)
  AC_CACHE_VAL(gdb_cv_have_procfs_piocset,
  [AC_TRY_COMPILE([#include <unistd.h>
#include <sys/types.h>
#include <sys/procfs.h>
], [
    int dummy;;
    dummy = ioctl(0, PIOCSET, &dummy);
  ],
  gdb_cv_have_procfs_piocset=yes, gdb_cv_have_procfs_piocset=no)])
  AC_MSG_RESULT($gdb_cv_have_procfs_piocset)
  if test $gdb_cv_have_procfs_piocset = yes; then
    AC_DEFINE(HAVE_PROCFS_PIOCSET)
  fi
fi

dnl See if host has libm.  This is usually needed by simulators.
AC_CHECK_LIB(m, main)

dnl Solaris puts wctype in /usr/lib/libw.a before Solaris 2.6.
dnl
dnl A bug in GNU ld 2.9.1 causes a problem if we link in -lw 
dnl under Solaris 2.6 because it is some funky empty library.
dnl So only link in libw if we have to.
AC_CHECK_LIB(c, wctype,: ,AC_CHECK_LIB(w, wctype))

dnl See if compiler supports "long long" type.

AC_MSG_CHECKING(for long long support in compiler)
AC_CACHE_VAL(gdb_cv_c_long_long,
[AC_TRY_COMPILE(, [
  extern long long foo;
  switch (foo & 2) { case 0: return 1; }
],
gdb_cv_c_long_long=yes, gdb_cv_c_long_long=no)])
AC_MSG_RESULT($gdb_cv_c_long_long)
if test $gdb_cv_c_long_long = yes; then
  AC_DEFINE(CC_HAS_LONG_LONG)
fi

dnl See if the compiler and runtime support printing long long

AC_MSG_CHECKING(for long long support in printf)
AC_CACHE_VAL(gdb_cv_printf_has_long_long,
[AC_TRY_RUN([
int main () {
  char buf[32];
  long long l = 0;
  l = (l << 16) + 0x0123;
  l = (l << 16) + 0x4567;
  l = (l << 16) + 0x89ab;
  l = (l << 16) + 0xcdef;
  sprintf (buf, "0x%016llx", l);
  return (strcmp ("0x0123456789abcdef", buf));
}],
gdb_cv_printf_has_long_long=yes,
gdb_cv_printf_has_long_long=no,
gdb_cv_printf_has_long_long=no)])
if test $gdb_cv_printf_has_long_long = yes; then
  AC_DEFINE(PRINTF_HAS_LONG_LONG)
fi
AC_MSG_RESULT($gdb_cv_printf_has_long_long)

dnl See if compiler supports "long double" type.  Can't use AC_C_LONG_DOUBLE
dnl because autoconf complains about cross-compilation issues.  However, this
dnl code uses the same variables as the macro for compatibility.

AC_MSG_CHECKING(for long double support in compiler)
AC_CACHE_VAL(ac_cv_c_long_double,
[AC_TRY_COMPILE(, [long double foo;],
ac_cv_c_long_double=yes, ac_cv_c_long_double=no)])
AC_MSG_RESULT($ac_cv_c_long_double)
if test $ac_cv_c_long_double = yes; then
  AC_DEFINE(HAVE_LONG_DOUBLE)
fi

dnl See if the compiler and runtime support printing long doubles

AC_MSG_CHECKING(for long double support in printf)
AC_CACHE_VAL(gdb_cv_printf_has_long_double,
[AC_TRY_RUN([
int main () {
  char buf[16];
  long double f = 3.141592653;
  sprintf (buf, "%Lg", f);
  return (strncmp ("3.14159", buf, 7));
}],
gdb_cv_printf_has_long_double=yes,
gdb_cv_printf_has_long_double=no,
gdb_cv_printf_has_long_double=no)])
if test $gdb_cv_printf_has_long_double = yes; then
  AC_DEFINE(PRINTF_HAS_LONG_DOUBLE)
fi
AC_MSG_RESULT($gdb_cv_printf_has_long_double)

dnl See if the compiler and runtime support scanning long doubles

AC_MSG_CHECKING(for long double support in scanf)
AC_CACHE_VAL(gdb_cv_scanf_has_long_double,
[AC_TRY_RUN([
int main () {
  char *buf = "3.141592653";
  long double f = 0;
  sscanf (buf, "%Lg", &f);
  return !(f > 3.14159 && f < 3.14160);
}],
gdb_cv_scanf_has_long_double=yes,
gdb_cv_scanf_has_long_double=no,
gdb_cv_scanf_has_long_double=no)])
if test $gdb_cv_scanf_has_long_double = yes; then
  AC_DEFINE(SCANF_HAS_LONG_DOUBLE)
fi
AC_MSG_RESULT($gdb_cv_scanf_has_long_double)

AC_FUNC_MMAP

dnl See if thread_db library is around for Solaris thread debugging.  Note that
dnl we must explicitly test for version 1 of the library because version 0
dnl (present on Solaris 2.4 or earlier) doesn't have the same API.

dnl Note that we only want this if we are both native (host == target), and
dnl not doing a canadian cross build (build == host).

if test ${build} = ${host} -a ${host} = ${target} ; then
   case ${host_os} in
   hpux*)
      AC_MSG_CHECKING(for HPUX/OSF thread support)
      if test -f /usr/include/dce/cma_config.h ; then
         if test "$GCC" = "yes" ; then
            AC_MSG_RESULT(yes)
            AC_DEFINE(HAVE_HPUX_THREAD_SUPPORT)
            CONFIG_OBS="${CONFIG_OJS} hpux-thread.o"
            CONFIG_SRCS="${CONFIG_SRCS} hpux-thread.c"
         else
            AC_MSG_RESULT(no (suppressed because you are not using GCC))
         fi
      else
         AC_MSG_RESULT(no)
      fi
      ;;
   solaris*)
      AC_MSG_CHECKING(for Solaris thread debugging library)
      if test -f /usr/lib/libthread_db.so.1 ; then
         AC_MSG_RESULT(yes)
         AC_DEFINE(HAVE_THREAD_DB_LIB)
         CONFIG_OBS="${CONFIG_OBS} sol-thread.o"
         CONFIG_SRCS="${CONFIG_SRCS} sol-thread.c"
         AC_CHECK_LIB(dl, dlopen)
         if test "$GCC" = "yes" ; then
            # The GNU linker requires the -export-dynamic option to make
            # all symbols visible in the dynamic symbol table.
            hold_ldflags=$LDFLAGS
            AC_MSG_CHECKING(for the ld -export-dynamic flag)
            LDFLAGS="${LDFLAGS} -Wl,-export-dynamic"
            AC_TRY_LINK(, [int i;], found=yes, found=no)
            LDFLAGS=$hold_ldflags
            AC_MSG_RESULT($found)
            if test $found = yes; then
               CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -Wl,-export-dynamic"
            fi
         fi
	 # Sun randomly tweaked the prototypes in <proc_service.h>
	 # at one point.
	 AC_MSG_CHECKING(if <proc_service.h> is old)
	 AC_CACHE_VAL(gdb_cv_proc_service_is_old,[
	    AC_TRY_COMPILE([
		#include <proc_service.h>
		ps_err_e ps_pdwrite
		    (struct ps_prochandle*, psaddr_t, const void*, size_t);
	    ],, gdb_cv_proc_service_is_old=no,
	        gdb_cv_proc_service_is_old=yes)
	 ])
	 AC_MSG_RESULT($gdb_cv_proc_service_is_old)
	 if test $gdb_cv_proc_service_is_old = yes; then
	    AC_DEFINE(PROC_SERVICE_IS_OLD)
	 fi
      else
         AC_MSG_RESULT(no)
      fi
      ;;
   esac
   AC_SUBST(CONFIG_LDFLAGS)
fi

dnl Handle optional features that can be enabled.
ENABLE_CFLAGS=

AC_ARG_ENABLE(tui,
[  --enable-tui            Enable full-screen terminal user interface],
[
  case "${enable_tui}" in
    yes | no) ;;
    "")  enable_tui=yes ;;
    *)
      AC_MSG_ERROR(Bad value for --enable-tui: ${enableval})
    ;;
  esac
])
case ${enable_tui} in
  "yes" )
    AC_DEFINE(TUI)
    BUILD_TUI=all-tui
    TUI_LIBRARY=tui/libtui.a
  ;;
  * )
    BUILD_TUI=
    TUI_LIBRARY=
  ;;
esac
AC_SUBST(BUILD_TUI)
AC_SUBST(TUI_LIBRARY)

AC_ARG_ENABLE(netrom,
[  --enable-netrom         Enable NetROM support],
[case "${enableval}" in
yes)	enable_netrom=yes ;;
no)	enable_netrom=no ;;
*)	AC_MSG_ERROR(bad value ${enableval} given for netrom option) ;;
esac])

if test "${enable_netrom}" = "yes"; then
	CONFIG_OBS="${CONFIG_OBS} remote-nrom.o" 
        CONFIG_SRCS="${CONFIG_SRCS} remote-nrom.c"
fi

AC_ARG_ENABLE(build-warnings,
[  --enable-build-warnings Enable build-time compiler warnings if gcc is used],
[build_warnings="-Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
case "${enableval}" in
  yes)	;;
  no)	build_warnings="-w";;
  ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
        build_warnings="${build_warnings} ${t}";;
  *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
        build_warnings="${t} ${build_warnings}";;
  *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
esac
if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
  echo "Setting warning flags = $build_warnings" 6>&1
fi
WARN_CFLAGS=""
WERROR_CFLAGS=""
if test "x${build_warnings}" != x -a "x$GCC" = xyes
then
  # Separate out the -Werror flag as some files just cannot be
  # compiled with it enabled.
  for w in ${build_warnings}; do
    case $w in
    -Werr*) WERROR_CFLAGS=-Werror ;;
    *) WARN_CFLAGS="${WARN_CFLAGS} $w"
    esac
  done
fi],[build_warnings=""])dnl

AC_SUBST(WARN_CFLAGS)
AC_SUBST(WERROR_CFLAGS)

MMALLOC_CFLAGS=
MMALLOC=
AC_SUBST(MMALLOC_CFLAGS)
AC_SUBST(MMALLOC)

AC_ARG_WITH(mmalloc,
[  --with-mmalloc          Use memory mapped malloc package],
[case "${withval}" in
  yes)  want_mmalloc=true ;;
  no)   want_mmalloc=false;;
  *)    AC_MSG_ERROR(bad value ${withval} for GDB with-mmalloc option) ;;
esac],[want_mmalloc=false])dnl

if test x$want_mmalloc = xtrue; then
   AC_DEFINE(USE_MMALLOC)
   AC_DEFINE(MMCHECK_FORCE)
   MMALLOC_CFLAGS="-I$srcdir/../mmalloc"
   MMALLOC='../mmalloc/libmmalloc.a'
fi


# In the Cygwin environment, we need some additional flags.
AC_CACHE_CHECK([for cygwin], gdb_cv_os_cygwin,
[AC_EGREP_CPP(lose, [
#if defined (__CYGWIN__) || defined (__CYGWIN32__)
lose
#endif],[gdb_cv_os_cygwin=yes],[gdb_cv_os_cygwin=no])])

DLLTOOL=${DLLTOOL-dlltool}
WINDRES=${WINDRES-windres}
AC_SUBST(DLLTOOL)
AC_SUBST(WINDRES)

dnl Figure out which term library to use.
if test x$gdb_host = xgo32; then
  TERM_LIB=
else
if test x$gdb_cv_os_cygwin = xyes; then
  TERM_LIB='`if test -r ../libtermcap/libtermcap.a; then echo ../libtermcap/libtermcap.a; else echo -ltermcap; fi`'
else
  TERM_LIB=
  AC_CHECK_LIB(ncurses, tgetent, TERM_LIB=-lncurses,
    AC_CHECK_LIB(Hcurses, tgetent, TERM_LIB=-lHcurses,
      AC_CHECK_LIB(termlib, tgetent, TERM_LIB=-ltermlib,
        AC_CHECK_LIB(termcap, tgetent, TERM_LIB=-ltermcap,
	  AC_CHECK_LIB(curses, tgetent, TERM_LIB=-lcurses,
	    AC_CHECK_LIB(terminfo, tgetent, TERM_LIB=-lterminfo))))))

  if test "x$TERM_LIB" = x
  then
    AC_MSG_ERROR(Could not find a term library, e.g. termcap or termlib!)
  fi
fi
fi
AC_SUBST(TERM_LIB)

# libreadline needs libuser32.a in a cygwin environment
WIN32LIBS=
if test x$gdb_cv_os_cygwin = xyes; then
    WIN32LIBS="-luser32"
fi
AC_SUBST(WIN32LIBS)


AC_PATH_X

 
# Unlike the sim directory, whether a simulator is linked is controlled by 
# presence of a SIM= and a SIM_OBS= definition in the target '.mt' file.  
# This code just checks for a few cases where we'd like to ignore those
# definitions, even when they're present in the '.mt' file.  These cases
# are when --disable-sim is specified, or if the simulator directory is
# not part of the soruce tree.
#
AC_ARG_ENABLE(sim,
[  --enable-sim            Link gdb with simulator],
[echo "enable_sim = $enable_sim";
 echo "enableval = ${enableval}";
 case "${enableval}" in
  yes) ignore_sim=false ;;
  no)  ignore_sim=true ;;
  *)   ignore_sim=false ;;
 esac],
[ignore_sim=false])

if test ! -d "${srcdir}/../sim"; then
  ignore_sim=true
fi

if test "${ignore_sim}" = "true"; then
    IGNORE_SIM="SIM="
    IGNORE_SIM_OBS="SIM_OBS="
else
    IGNORE_SIM=""
    IGNORE_SIM_OBS=""
    AC_DEFINE(WITH_SIM)
fi
AC_SUBST(IGNORE_SIM)
AC_SUBST(IGNORE_SIM_OBS)

AC_SUBST(ENABLE_CFLAGS)

AC_SUBST(CONFIG_OBS)
AC_SUBST(CONFIG_DEPS)
AC_SUBST(CONFIG_SRCS)

# Begin stuff to support --enable-shared
AC_ARG_ENABLE(shared,
[  --enable-shared         Use shared libraries],
[case "${enableval}" in
  yes) shared=true ;;
  no)  shared=false ;;
  *) shared=true ;;
esac])dnl

HLDFLAGS=
HLDENV=
# If we have shared libraries, try to set rpath reasonably.
if test "${shared}" = "true"; then
  case "${host}" in
  *-*-hpux*)
    HLDFLAGS='-Wl,+s,+b,$(libdir)'
    ;;
  *-*-irix5* | *-*-irix6*)
    HLDFLAGS='-Wl,-rpath,$(libdir)'
    ;;
  *-*-linux*aout*)
    ;;
  *-*-linux* | *-pc-linux-gnu)
    HLDFLAGS='-Wl,-rpath,$(libdir)'
    ;;
  *-*-solaris*)
    HLDFLAGS='-R $(libdir)'
    ;;
  *-*-sysv4*)
    HLDENV='if test -z "$${LD_RUN_PATH}"; then LD_RUN_PATH=$(libdir); else LD_RUN_PATH=$${LD_RUN_PATH}:$(libdir); fi; export LD_RUN_PATH;'
    ;;
  esac
fi

# On SunOS, if the linker supports the -rpath option, use it to
# prevent ../bfd and ../opcodes from being included in the run time
# search path.
case "${host}" in
  *-*-sunos*)
    echo 'main () { }' > conftest.c
    ${CC} -o conftest -Wl,-rpath= conftest.c >/dev/null 2>conftest.t
    if grep 'unrecognized' conftest.t >/dev/null 2>&1; then
      :
    elif grep 'No such file' conftest.t >/dev/null 2>&1; then
      :
    elif grep 'do not mix' conftest.t >/dev/null 2>&1; then
      :
    elif grep 'some text already loaded' conftest.t >/dev/null 2>&1; then
      :
    elif test "${shared}" = "true"; then
      HLDFLAGS='-Wl,-rpath=$(libdir)'
    else
      HLDFLAGS='-Wl,-rpath='
    fi
    rm -f conftest.t conftest.c conftest
    ;;
esac
AC_SUBST(HLDFLAGS)
AC_SUBST(HLDENV)
# End stuff to support --enable-shared

# target_subdir is used by the testsuite to find the target libraries.
target_subdir=
if test "${host}" != "${target}"; then
    target_subdir="${target_alias}/"
fi
AC_SUBST(target_subdir)

frags=
host_makefile_frag=${srcdir}/config/${gdb_host_cpu}/${gdb_host}.mh
if test ! -f ${host_makefile_frag}; then
AC_MSG_ERROR("*** Gdb does not support host ${host}")
fi
frags="$frags $host_makefile_frag"

target_makefile_frag=${srcdir}/config/${gdb_target_cpu}/${gdb_target}.mt
if test ! -f ${target_makefile_frag}; then
AC_MSG_ERROR("*** Gdb does not support target ${target}")
fi
frags="$frags $target_makefile_frag"

AC_SUBST_FILE(host_makefile_frag)
AC_SUBST_FILE(target_makefile_frag)
AC_SUBST(frags)

changequote(,)dnl
hostfile=`sed -n '
s/XM_FILE[ 	]*=[ 	]*\([^ 	]*\)/\1/p
' ${host_makefile_frag}`

targetfile=`sed -n '
s/TM_FILE[ 	]*=[ 	]*\([^ 	]*\)/\1/p
' ${target_makefile_frag}`

# these really aren't orthogonal true/false values of the same condition,
# but shells are slow enough that I like to reuse the test conditions
# whenever possible
if test "${target}" = "${host}"; then
nativefile=`sed -n '
s/NAT_FILE[ 	]*=[ 	]*\([^ 	]*\)/\1/p
' ${host_makefile_frag}`
# else
# GDBserver is only useful in a "native" enviroment
# configdirs=`echo $configdirs | sed 's/gdbserver//'`
fi
changequote([,])

SUBDIRS="doc testsuite nlm"
if test "${enable_multi_ice}" = "yes"; then
  SUBDIRS="${SUBDIRS} multi-ice"
fi

AC_SUBST(SUBDIRS)

# If hostfile (XM_FILE) and/or targetfile (TM_FILE) and/or nativefile
# (NAT_FILE) is not set in config/*/*.m[ht] files, we don't make the
# corresponding links.  But we have to remove the xm.h files and tm.h
# files anyway, e.g. when switching from "configure host" to
# "configure none".

files=
links=
rm -f xm.h
if test "${hostfile}" != ""; then
files="${files} config/${gdb_host_cpu}/${hostfile}"
links="${links} xm.h"
fi
rm -f tm.h
if test "${targetfile}" != ""; then
files="${files} config/${gdb_target_cpu}/${targetfile}"
links="${links} tm.h"
fi
rm -f nm.h
if test "${nativefile}" != ""; then
files="${files} config/${gdb_host_cpu}/${nativefile}"
links="${links} nm.h"
else
# A cross-only configuration.
files="${files} config/nm-empty.h"
links="${links} nm.h"
fi

AC_LINK_FILES($files, $links)

dnl Check for exe extension set on certain hosts (e.g. Win32)
AC_EXEEXT

AC_CONFIG_SUBDIRS($configdirs)
AC_OUTPUT(Makefile tui/Makefile .gdbinit:gdbinit.in,
[
dnl Autoconf doesn't provide a mechanism for modifying definitions 
dnl provided by makefile fragments.
dnl
if test "${nativefile}" = ""; then
sed -e '/^NATDEPFILES[[ 	]]*=[[ 	]]*/s//# NATDEPFILES=/' \
	< Makefile > Makefile.tem
mv -f Makefile.tem Makefile
fi

changequote(,)dnl
sed -e '/^TM_FILE[ 	]*=/s,^TM_FILE[ 	]*=[ 	]*,&config/'"${gdb_target_cpu}"'/,
/^XM_FILE[ 	]*=/s,^XM_FILE[ 	]*=[ 	]*,&config/'"${gdb_host_cpu}"'/,
/^NAT_FILE[ 	]*=/s,^NAT_FILE[ 	]*=[ 	]*,&config/'"${gdb_host_cpu}"'/,' <Makefile >Makefile.tmp
mv -f Makefile.tmp Makefile
changequote([,])dnl


case x$CONFIG_HEADERS in
xconfig.h:config.in)
echo > stamp-h ;;
esac
],
[
gdb_host_cpu=$gdb_host_cpu
gdb_target_cpu=$gdb_target_cpu
nativefile=$nativefile
])

exit 0