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dnl
dnl  configure.in: Configure template for zsh.
dnl  Process this file with autoconf to produce a configure script.
dnl
dnl  Copyright (c) 1995-1997 Richard Coleman
dnl  All rights reserved.
dnl
dnl  Permission is hereby granted, without written agreement and without
dnl  license or royalty fees, to use, copy, modify, and distribute this
dnl  software and to distribute modified versions of this software for any
dnl  purpose, provided that the above copyright notice and the following
dnl  two paragraphs appear in all copies of this software.
dnl
dnl  In no event shall Richard Coleman or the Zsh Development Group be liable
dnl  to any party for direct, indirect, special, incidental, or consequential
dnl  damages arising out of the use of this software and its documentation,
dnl  even if Richard Coleman and the Zsh Development Group have been advised of
dnl  the possibility of such damage.
dnl
dnl  Richard Coleman and the Zsh Development Group specifically disclaim any
dnl  warranties, including, but not limited to, the implied warranties of
dnl  merchantability and fitness for a particular purpose.  The software
dnl  provided hereunder is on an "as is" basis, and Richard Coleman and the
dnl  Zsh Development Group have no obligation to provide maintenance,
dnl  support, updates, enhancements, or modifications.
dnl

AC_INIT(Src/zsh.h)
AC_CONFIG_HEADER(config.h)

dnl What version of zsh are we building ?
. ${srcdir}/Config/version.mk
echo "configuring for zsh $VERSION"

dnl ----------------------------------------------
dnl CHECK FOR MACHINE/VENDOR/OPERATING SYSTEM TYPE
dnl ----------------------------------------------
dnl Find out machine type, vendor, and operating system
dnl What type of host is this?
AC_CANONICAL_HOST
AC_DEFINE_UNQUOTED(MACHTYPE, "$host_cpu")
AC_DEFINE_UNQUOTED(VENDOR,   "$host_vendor")
AC_DEFINE_UNQUOTED(OSTYPE,   "$host_os")

dnl -----------------------------
dnl CHECKING COMMAND LINE OPTIONS
dnl -----------------------------
dnl Handle --program-prefix, --program-suffix, etc.
zsh_ARG_PROGRAM

dnl Do you want to debug zsh?
undefine([zsh-debug])dnl
AC_ARG_ENABLE(zsh-debug,
[  --enable-zsh-debug         use it if you want to debug zsh],
[if test x$enableval = xyes; then
  AC_DEFINE(DEBUG)
fi])

dnl Do you want zsh memory allocation routines.
undefine([zsh-mem])dnl
AC_ARG_ENABLE(zsh-mem,
[  --enable-zsh-mem           use zsh memory allocation routines],
[if test x$enableval = xyes; then
  AC_DEFINE(ZSH_MEM)
fi])

dnl Do you want to debug zsh memory allocation routines.
undefine([zsh-mem-debug])dnl
AC_ARG_ENABLE(zsh-mem-debug,
[  --enable-zsh-mem-debug     debug zsh memory allocation routines],
[if test x$enableval = xyes; then
  AC_DEFINE(ZSH_MEM_DEBUG)
fi])

dnl Do you want to print warnings when errors in memory allocation.
undefine([zsh-mem-warning])dnl
AC_ARG_ENABLE(zsh-mem-warning,
[  --enable-zsh-mem-warning   print warnings when error in memory allocation],
[if test x$enableval = xyes; then
  AC_DEFINE(ZSH_MEM_WARNING)
fi])

dnl Do you want to turn on error checking for free().
undefine([zsh-secure-free])dnl
AC_ARG_ENABLE(zsh-secure-free,
[  --enable-zsh-secure-free   turn on error checking for free()],
[if test x$enableval = xyes; then
  AC_DEFINE(ZSH_SECURE_FREE)
fi])

dnl Do you want debugging information on internal hash tables.
dnl This turns on the `hashinfo' builtin command.
undefine([zsh-hash-debug])dnl
AC_ARG_ENABLE(zsh-hash-debug,
[  --enable-zsh-hash-debug    turn on debugging of internal hash tables],
[if test x$enableval = xyes; then
  AC_DEFINE(ZSH_HASH_DEBUG)
fi])

dnl Do you want large file support, if available?
undefine([lfs])dnl
AC_ARG_ENABLE(lfs,
[  --disable-lfs              turn off support for large files],
[lfs="$enableval"], [lfs=yes])

dnl Pathnames for global zsh scripts
undefine([etcdir])dnl
AC_ARG_ENABLE(etcdir,
[  --enable-etcdir=directory  default directory for global zsh scripts],
[etcdir="$enableval"], [etcdir=/etc])

undefine([zshenv])dnl
AC_ARG_ENABLE(zshenv,
[  --enable-zshenv=pathname   the full pathname of the global zshenv script],
[zshenv="$enableval"],
[if test "x$etcdir" = xno; then
  zshenv=no
else
  zshenv="$etcdir/zshenv"
fi])
if test "x$zshenv" != xno; then
  AC_DEFINE_UNQUOTED(GLOBAL_ZSHENV, "$zshenv")
fi

undefine([zshrc])dnl
AC_ARG_ENABLE(zshrc,
[  --enable-zshrc=pathname    the full pathname of the global zshrc script],
[zshrc="$enableval"],
[if test "x$etcdir" = xno; then
  zshrc=no
else
  zshrc="$etcdir/zshrc"
fi])
if test "x$zshrc" != xno; then
  AC_DEFINE_UNQUOTED(GLOBAL_ZSHRC, "$zshrc")
fi

undefine([zprofile])dnl
AC_ARG_ENABLE(zprofile,
[  --enable-zprofile=pathname the full pathname of the global zprofile script],
[zprofile="$enableval"],
[if test "x$etcdir" = xno; then
  zprofile=no
else
  zprofile="$etcdir/zprofile"
fi])
if test "x$zprofile" != xno; then
  AC_DEFINE_UNQUOTED(GLOBAL_ZPROFILE, "$zprofile")
fi

undefine([zlogin])dnl
AC_ARG_ENABLE(zlogin,
[  --enable-zlogin=pathname   the full pathname of the global zlogin script],
[zlogin="$enableval"],
[if test "x$etcdir" = xno; then
  zlogin=no
else
  zlogin="$etcdir/zlogin"
fi])
if test "x$zlogin" != xno; then
  AC_DEFINE_UNQUOTED(GLOBAL_ZLOGIN, "$zlogin")
fi

undefine([zlogout])dnl
AC_ARG_ENABLE(zlogout,
[  --enable-zlogout=pathname  the full pathname of the global zlogout script],
[zlogout="$enableval"],
[if test "x$etcdir" = xno; then
  zlogout=no
else
  zlogout="$etcdir/zlogout"
fi])
if test "x$zlogout" != xno; then
  AC_DEFINE_UNQUOTED(GLOBAL_ZLOGOUT, "$zlogout")
fi

AC_SUBST(zshenv)dnl
AC_SUBST(zshrc)dnl
AC_SUBST(zprofile)dnl
AC_SUBST(zlogin)dnl
AC_SUBST(zlogout)dnl

dnl Do you want dynamically loaded binary modules.
undefine([dynamic])dnl
AC_ARG_ENABLE(dynamic,
[  --disable-dynamic          turn off dynamically loaded binary modules],
[dynamic="$enableval"], [dynamic=yes])

dnl Do you want to compile as K&R C.
AC_ARG_ENABLE(ansi2knr,
[  --enable-ansi2knr          translate source to K&R C before compiling],
[ansi2knr="$enableval"], [ansi2knr=default])

dnl Do you want to disable restricted on r* commands
undefine([restricted-r])dnl
AC_ARG_ENABLE(restricted-r,
[  --disable-restricted-r     turn off restricted shell if the invoked command is r*],
[if test x$enableval = xyes; then
  AC_DEFINE(RESTRICTED_R)
fi],
AC_DEFINE(RESTRICTED_R)
)

dnl Do you want to disable use of locale functions
AC_ARG_ENABLE([locale],
[  --disable-locale           turn off locale features],
[if test x$enableval = xyes; then
  AC_DEFINE(CONFIG_LOCALE)
fi],
AC_DEFINE(CONFIG_LOCALE)
)

undefine([fndir])dnl
AC_ARG_ENABLE(fndir,
[  --enable-fndir=DIR         where functions go (default DATADIR/zsh/functions)],
[if test $enableval = yes; then
  fndir=${datadir}/${tzsh_name}/${VERSION}/functions
else
  fndir="$enableval"
fi], [fndir=${datadir}/${tzsh_name}/${VERSION}/functions])

undefine([function_subdirs])
AC_ARG_ENABLE(function-subdirs,
[  --enable-function-subdirs  install functions in subdirectories])

if test "x${FUNCTIONS_INSTALL+set}" != xset; then
  FUNCTIONS_INSTALL="Core/* Base/* Builtins/* User/* Commands/* Debian/* Linux/* X/* Zle/* Prompts/* Misc/*"
  if test $dynamic != no; then
    FUNCTIONS_INSTALL="${FUNCTIONS_INSTALL} Zftp/*"
  fi
fi

if test "x${enable_function_subdirs}" != x -a \
  "x${enable_function_subdirs}" != xno -a \
  "x$FUNCTIONS_INSTALL" != x; then
  FUNCTIONS_SUBDIRS=yes
else
  FUNCTIONS_SUBDIRS=no
fi

AC_SUBST(fndir)dnl
AC_SUBST(FUNCTIONS_INSTALL)dnl
AC_SUBST(FUNCTIONS_SUBDIRS)dnl

dnl Do you want maildir support?
undefine([maildir_support])dnl
AC_ARG_ENABLE(maildir-support,
[  --enable-maildir-support   Enable maildir support in MAIL and MAILPATH],
[if test x$enableval = xyes; then
  AC_DEFINE(MAILDIR_SUPPORT)
fi])

dnl ------------------
dnl CHECK THE COMPILER
dnl ------------------
dnl We want these before the checks, so the checks can modify their values.
test -z "${CFLAGS+set}"  && CFLAGS=  auto_cflags=1
test -z "${LDFLAGS+set}" && LDFLAGS= auto_ldflags=1

AC_PROG_CC

dnl Check for large file support.
dnl This needs to be done early to get the stuff into the flags.
if test $lfs != no; then
zsh_LARGE_FILE_SUPPORT
fi

dnl if the user hasn't specified CFLAGS, then
dnl   if compiler is gcc, then use -O2 and some warning flags
dnl   else use -O
if test -n "$auto_cflags"; then
  if test "${enable_zsh_debug}" = yes; then
    if test -n "$GCC"; then
      CFLAGS="$CFLAGS -Wall -Wno-implicit -Wmissing-prototypes -ggdb"
    else
      CFLAGS="$CFLAGS -g"
    fi
  else
    if test -n "$GCC"; then
      CFLAGS="$CFLAGS -Wall -Wno-implicit -Wmissing-prototypes -O2"
    else
      CFLAGS="$CFLAGS -O"
    fi
  fi
fi
if test -n "$auto_ldflags"; then
  case "${enable_zsh_debug}$host_os" in
    yesaix*|yeshpux*|yesnetbsd*) ;;  # "ld -g" is not valid on these systems
    yes*)    LDFLAGS=-g ;;
    *)       LDFLAGS=-s ;;
  esac
fi

dnl ----------
dnl SCO KLUDGE
dnl ----------
dnl Sco doesn't define any useful compiler symbol,
dnl so we will check for sco and define __sco if
dnl found.
case "$host_os" in
  sco*) CFLAGS="-D__sco $CFLAGS" ;;
esac

sed=':1
     s/ -s / /g
     t1
     s/^ *//
     s/ *$//'

case " $LDFLAGS " in
  *" -s "*) strip_exeldflags=true strip_libldflags=true
    LDFLAGS=`echo " $LDFLAGS " | sed "$sed"` ;;
  *) strip_exeldflags=false strip_libldflags=false ;;
esac

case " ${EXELDFLAGS+$EXELDFLAGS }" in
  " ") ;;
  *" -s "*) strip_exeldflags=true
    EXELDFLAGS=`echo " $EXELDFLAGS " | sed "$sed"` ;;
  *) strip_exeldflags=false ;;
esac

case " ${LIBLDFLAGS+$LIBLDFLAGS }" in
  " ") ;;
  *" -s "*) strip_libldflags=true
    LIBLDFLAGS=`echo " $LIBLDFLAGS " | sed "$sed"` ;;
  *) strip_libldflags=false ;;
esac

AC_SUBST(CFLAGS)dnl
AC_SUBST(LDFLAGS)dnl
AC_SUBST(EXELDFLAGS)dnl
AC_SUBST(LIBLDFLAGS)dnl

AC_PROG_CPP                 dnl Figure out how to run C preprocessor.
AC_PROG_GCC_TRADITIONAL     dnl Do we need -traditional flag for gcc.
AC_C_CONST                  dnl Does compiler support `const'.

fp_PROG_CC_STDC
AC_MSG_CHECKING([whether to use prototypes])
if test ."$ansi2knr" = .yes || test ."$ansi2knr" = .no; then
  msg="(overridden) "
else
  msg=
  if test ."$fp_cv_prog_cc_stdc" = .no; then
    ansi2knr=yes
  else
    ansi2knr=no
  fi
fi
if test "$ansi2knr" = yes; then
  AC_MSG_RESULT(${msg}no)
  U=_
else
  AC_MSG_RESULT(${msg}yes)
  AC_DEFINE(PROTOTYPES)
  U=
fi
AC_SUBST(U)

AC_FUNC_ALLOCA              dnl Check how to get `alloca'.

dnl If the compiler supports union initialisation
AC_CACHE_CHECK(if the compiler supports union initialisation,
zsh_cv_c_have_union_init,
[AC_TRY_COMPILE([union{void *p;long l;}u={0};], [u.l=1;],
  zsh_cv_c_have_union_init=yes,
  zsh_cv_c_have_union_init=no)])
if test $zsh_cv_c_have_union_init = yes; then
  AC_DEFINE(HAVE_UNION_INIT)
fi

dnl  Checking if compiler correctly cast signed to unsigned.
AC_CACHE_CHECK(if signed to unsigned casting is broken,
zsh_cv_c_broken_signed_to_unsigned_casting,
[AC_TRY_RUN([main(){return((int)(unsigned char)((char) -1) == 255);}],
  zsh_cv_c_broken_signed_to_unsigned_casting=yes,
  zsh_cv_c_broken_signed_to_unsigned_casting=no,
  zsh_cv_c_broken_signed_to_unsigned_casting=no)])
if test $zsh_cv_c_broken_signed_to_unsigned_casting = yes; then
  AC_DEFINE(BROKEN_SIGNED_TO_UNSIGNED_CASTING)
fi

dnl Checking if the compiler supports variable-length arrays
AC_CACHE_CHECK(if the compiler supports variable-length arrays,
zsh_cv_c_variable_length_arrays,
[AC_TRY_COMPILE([int foo(), n;], [int i[foo()], a[n+1];],
  zsh_cv_c_variable_length_arrays=yes,
  zsh_cv_c_variable_length_arrays=no)])
if test $zsh_cv_c_variable_length_arrays = yes; then
  AC_DEFINE(HAVE_VARIABLE_LENGTH_ARRAYS)
fi

dnl ------------------
dnl CHECK FOR PROGRAMS
dnl ------------------
AC_PROG_MAKE_SET            dnl Does make define $MAKE
AC_PROG_INSTALL             dnl Check for BSD compatible `install'
AC_PROG_AWK                 dnl Check for mawk,gawk,nawk, then awk.
AC_PROG_LN                  dnl Check for working ln, for "make install"
AC_CHECK_PROGS([YODL], [yodl], [: yodl])

dnl ------------------
dnl CHECK HEADER FILES
dnl ------------------
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_TIME
AC_HEADER_STAT
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(sys/time.h sys/times.h sys/select.h termcap.h termio.h \
		 termios.h sys/param.h sys/filio.h string.h memory.h \
		 limits.h fcntl.h libc.h sys/utsname.h sys/resource.h \
		 locale.h errno.h stdlib.h unistd.h sys/capability.h \
		 utmp.h utmpx.h sys/types.h pwd.h grp.h poll.h sys/mman.h)
if test $dynamic = yes; then
  AC_CHECK_HEADERS(dlfcn.h)
  AC_CHECK_HEADERS(dl.h)
fi

dnl Some SCO systems cannot include both sys/time.h and sys/select.h
if test $ac_cv_header_sys_time_h = yes -a $ac_cv_header_sys_select_h = yes; then
  AC_CACHE_CHECK(for conflicts in sys/time.h and sys/select.h,
  zsh_cv_header_time_h_select_h_conflicts,
  [AC_TRY_COMPILE([#include <sys/time.h>
#include <sys/select.h>], [int i;],
  zsh_cv_header_time_h_select_h_conflicts=no,
  zsh_cv_header_time_h_select_h_conflicts=yes)])
  if test $zsh_cv_header_time_h_select_h_conflicts = yes; then
    AC_DEFINE(TIME_H_SELECT_H_CONFLICTS)
  fi
fi

AC_CACHE_CHECK(POSIX termios, zsh_cv_sys_posix_termios,
[AC_TRY_LINK([#include <sys/types.h>
#include <unistd.h>
#include <termios.h>],
[/* SunOS 4.0.3 has termios.h but not the library calls.  */
tcgetattr(0, 0);],
  zsh_cv_sys_posix_termios=yes, zsh_cv_sys_posix_termios=no)])

if test $zsh_cv_sys_posix_termios = yes; then
  AC_CACHE_CHECK(TIOCGWINSZ in termios.h,
  zsh_cv_header_termios_h_tiocgwinsz,
  [AC_TRY_LINK([#include <sys/types.h>
#include <termios.h>],
  [int x = TIOCGWINSZ;],
  zsh_cv_header_termios_h_tiocgwinsz=yes,
  zsh_cv_header_termios_h_tiocgwinsz=no)])
else
  zsh_cv_header_termios_h_tiocgwinsz=no
fi
 
if test $zsh_cv_header_termios_h_tiocgwinsz = no; then
  AC_CACHE_CHECK(TIOCGWINSZ in sys/ioctl.h,
  zsh_cv_header_sys_ioctl_h_tiocgwinsz,
  [AC_TRY_LINK([#include <sys/types.h>
#include <sys/ioctl.h>],
  [int x = TIOCGWINSZ;],
  zsh_cv_header_sys_ioctl_h_tiocgwinsz=yes,
  zsh_cv_header_sys_ioctl_h_tiocgwinsz=no)])
  if test $zsh_cv_header_sys_ioctl_h_tiocgwinsz = yes; then
    AC_DEFINE(GWINSZ_IN_SYS_IOCTL)
  fi
fi
 
AC_CHECK_HEADER([sys/ptem.h], AC_DEFINE(WINSIZE_IN_PTEM))

dnl -------------------
dnl CHECK FOR LIBRARIES
dnl -------------------

dnl On some systems, modules need to be linked against libc explicitly,
dnl in case they require objects that exist only in the static version
dnl and might not be compiled into the zsh executable.
AC_CHECK_LIB(c, printf)

AC_CHECK_LIB(m, pow)

dnl Prefer BSD termcap library to SysV curses library, except on certain
dnl versions of AIX and HP-UX.
case "$host_os" in
  aix*|hpux10.*) termcap_curses_order="curses ncurses termcap" ;;
  *)             termcap_curses_order="termcap curses ncurses" ;;
esac

for lib in $termcap_curses_order; do
  AC_CHECK_LIB(${lib}, tgetent, [LIBS="-l$lib $LIBS"; break])
done

dnl Some systems (Solaris 2.x, Linux Redhat 5.x) require
dnl libnsl (Network Services Library) to find yp_all
AC_CHECK_FUNCS(yp_all)
if test $ac_cv_func_yp_all = no; then
  AC_CHECK_LIB(nsl, yp_all)
fi

dnl I am told that told that unicos reqire these for nis_list
if test `echo $host_os | sed 's/^\(unicos\).*/\1/'` = unicos; then
  LIBS="-lcraylm -lkrb -lnisdb -lnsl -lrpcsvc $LIBS"
fi

if test "x$dynamic" = xyes; then
  AC_CHECK_LIB(dl, dlopen)
fi

AC_CHECK_LIB(cap, cap_get_proc)

AC_CHECK_LIB(socket, socket)

dnl ---------------------
dnl CHECK TERMCAP LIBRARY
dnl ---------------------
dnl Checks for external variable ospeed in the termcap library.
AC_CACHE_CHECK(if an include file defines ospeed,
zsh_cv_decl_ospeed_include_defines,
[AC_TRY_LINK(
[#include <sys/types.h>
#if HAVE_TERMIOS_H
#include <termios.h>
#endif
#if HAVE_TERMCAP_H
#include <termcap.h>
#endif], [ospeed = 0;],
zsh_cv_decl_ospeed_include_defines=yes,
zsh_cv_decl_ospeed_include_defines=no)])

if test $zsh_cv_decl_ospeed_include_defines = no; then
  AC_CACHE_CHECK(if you must define ospeed,
  zsh_cv_decl_ospeed_must_define,
  [AC_TRY_LINK( ,[extern short ospeed; ospeed = 0;],
  zsh_cv_decl_ospeed_must_define=yes,
  zsh_cv_decl_ospeed_must_define=no)])
fi

if test $zsh_cv_decl_ospeed_include_defines = yes; then
  AC_DEFINE(HAVE_OSPEED)
elif test $zsh_cv_decl_ospeed_must_define = yes; then
  AC_DEFINE(HAVE_OSPEED)
  AC_DEFINE(MUST_DEFINE_OSPEED)
fi

dnl  Check if tgetent accepts NULL (and will allocate its own termcap buffer)
dnl  Some termcaps reportedly accept a zero buffer, but then dump core
dnl  in tgetstr().
AC_CACHE_CHECK(if tgetent accepts NULL,
zsh_cv_func_tgetent_accepts_null,
[AC_TRY_RUN([
main()
{
    int i = tgetent((char*)0,"vt100");
    if (i > 0) {
	char tbuf[1024], *u;
    	u = tbuf;
    	tgetstr("cl", &u);
    }
    exit(!i || i == -1);
}
],
  zsh_cv_func_tgetent_accepts_null=yes,
  zsh_cv_func_tgetent_accepts_null=no,
  zsh_cv_func_tgetent_accepts_null=no)])
if test $zsh_cv_func_tgetent_accepts_null = yes; then
  AC_DEFINE(TGETENT_ACCEPTS_NULL)
fi

dnl --------------
dnl CHECK TYPEDEFS
dnl --------------

AC_TYPE_SIGNAL
AC_TYPE_PID_T
AC_TYPE_OFF_T
AC_CHECK_TYPE(ino_t, unsigned long)
AC_TYPE_MODE_T
AC_TYPE_UID_T
AC_TYPE_SIZE_T

dnl ------------------------------------------------
dnl Check size of long and try to find a 64-bit type
dnl ------------------------------------------------
dnl AC_CHECK_SIZEOF is no good, because we need the result here,
dnl and that doesn't seem to define a shell parameter.
AC_CACHE_CHECK(if long is 64 bits, zsh_cv_long_is_64_bit,
[AC_TRY_RUN([int main() { return sizeof(long) < 8; }],
zsh_cv_long_is_64_bit=yes,
zsh_cv_long_is_64_bit=no,
zsh_cv_long_is_64_bit=no)])

if test $zsh_cv_long_is_64_bit = yes; then
  AC_DEFINE(LONG_IS_64_BIT)
else
  AC_CACHE_CHECK(if off_t is 64 bit, zsh_cv_off_t_is_64_bit,
  [AC_TRY_RUN([
#include <sys/types.h>

main() { return sizeof(off_t) < 8; }
],
  zsh_cv_off_t_is_64_bit=yes,
  zsh_cv_off_t_is_64_bit=no,
  zsh_cv_off_t_is_64_bit=no)])
  if test $zsh_cv_off_t_is_64_bit = yes; then
    AC_DEFINE(OFF_T_IS_64_BIT)
  fi

  AC_CACHE_CHECK(if ino_t is 64 bit, zsh_cv_ino_t_is_64_bit,
  [AC_TRY_RUN([
#include <sys/types.h>

main() { return sizeof(ino_t) < 8; }
],
  zsh_cv_ino_t_is_64_bit=yes,
  zsh_cv_ino_t_is_64_bit=no,
  zsh_cv_ino_t_is_64_bit=no)])
  if test $zsh_cv_ino_t_is_64_bit = yes; then
    AC_DEFINE(INO_T_IS_64_BIT)
  fi

  if test $lfs != no -o $zsh_cv_off_t_is_64_bit = yes \
  -o $zsh_cv_ino_t_is_64_bit = yes; then
    AC_CACHE_CHECK(if compiler has a 64 bit type, zsh_cv_64_bit_type,
    [if test $lfs != yes -a $lfs != no; then
      zsh_64_BIT_TYPE(${lfs}, zsh_cv_64_bit_type, force)
     else
       zsh_64_BIT_TYPE(long long, zsh_cv_64_bit_type)
       if test "$zsh_cv_64_bit_type" = no; then
         zsh_64_BIT_TYPE(quad_t, zsh_cv_64_bit_type)
       fi
       if test "$zsh_cv_64_bit_type" = no; then
         zsh_64_BIT_TYPE(__int64_t, zsh_cv_64_bit_type)
       fi
       dnl As a last resort, if we know off_t has 64 bits, use that as
       dnl the 64-bit integer type.  I don't dare try ino_t since there's
       dnl probably nothing to stop that being unsigned.
       if test "$zsh_cv_64_bit_type" = no -a \
       "$zsh_cv_off_t_is_64_bit" = yes; then
         zsh_64_BIT_TYPE(off_t, zsh_cv_64_bit_type)
       fi
     fi])
    if test "$zsh_cv_64_bit_type" != no; then
      AC_DEFINE_UNQUOTED(ZSH_64_BIT_TYPE, $zsh_cv_64_bit_type)

      dnl Handle cases where unsigned type cannot be simply
      dnl `unsigned ZSH_64_BIT_TYPE'.  More tests may be required.
      AC_CACHE_CHECK(for a corresponding unsigned 64 bit type,
      zsh_cv_64_bit_utype,
      [zsh_64_BIT_TYPE(unsigned $zsh_cv_64_bit_type, zsh_cv_64_bit_utype,
       force)
       if test "$zsh_cv_64_bit_utype" = no; then
         zsh_64_BIT_TYPE(__uint64_t, zsh_cv_64_bit_utype)
       fi])
      if test "$zsh_cv_64_bit_utype" != no; then
        AC_DEFINE_UNQUOTED(ZSH_64_BIT_UTYPE, $zsh_cv_64_bit_utype)
      fi
    fi
  fi
fi

dnl Check for sigset_t.  Currently I'm looking in
dnl <sys/types.h> and <signal.h>.  Others might need
dnl to be added.
AC_CACHE_CHECK(for sigset_t, zsh_cv_type_sigset_t,
[AC_TRY_COMPILE(
[#include <sys/types.h>
#include <signal.h>], [sigset_t tempsigset;],
  zsh_cv_type_sigset_t=yes, zsh_cv_type_sigset_t=no)])
if test $zsh_cv_type_sigset_t = no; then
  AC_DEFINE(sigset_t, unsigned int)
fi

dnl Check for struct timezone since some old SCO versions do not define it
zsh_TYPE_EXISTS([
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
], struct timezone)

dnl Check for utmp structures, for watch
zsh_TYPE_EXISTS([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UTMP_H
# include <utmp.h>
#endif
], struct utmp)
zsh_TYPE_EXISTS([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UTMPX_H
# include <utmpx.h>
#endif
], struct utmpx)

dnl Check contents of utmp structures
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UTMP_H
# include <utmp.h>
#endif
], struct utmp, ut_host)
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UTMPX_H
# include <utmpx.h>
#endif
], struct utmpx, ut_host)
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UTMPX_H
# include <utmpx.h>
#endif
], struct utmpx, ut_xtime)
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UTMPX_H
# include <utmpx.h>
#endif
], struct utmpx, ut_tv)

dnl Check for inode numbers in directory entry structures
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_DIRENT_H
# include <dirent.h>
#endif
], struct dirent, d_ino)
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_DIRENT_H
# include <dirent.h>
#endif
], struct dirent, d_stat)
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
#endif
#ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
#endif
#ifdef HAVE_NDIR_H
# include <ndir.h>
#endif
], struct direct, d_ino)
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
#endif
#ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
#endif
#ifdef HAVE_NDIR_H
# include <ndir.h>
#endif
], struct direct, d_stat)

dnl Check IPv6 socket address structure type
zsh_STRUCT_MEMBER([
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <netinet/in.h>
], struct sockaddr_in6, sin6_scope_id)

dnl need to integrate this function
dnl AC_FUNC_STRFTIME

AC_CHECK_FUNCS(lchown memcpy memmove \
              strftime waitpid select poll tcsetpgrp tcgetattr strstr lstat \
              getlogin setpgid gettimeofday gethostname mkfifo wait3 difftime \
              sigblock sigsetmask sigrelse sighold killpg sigaction getrlimit \
              sigprocmask setuid seteuid setreuid setresuid setsid strerror \
              nis_list initgroups fchdir cap_get_proc readlink nice \
	      getgrgid getgrnam getpwent getpwnam getpwuid setpgrp \
	      inet_aton inet_pton inet_ntop getipnodebyname gethostbyname2 \
	      fseeko ftello mmap munmap msync ftruncate setlocale)

dnl ---------------
dnl CHECK FUNCTIONS
dnl ---------------
if test $ac_cv_func_setpgrp = yes; then
  AC_FUNC_GETPGRP
else
  dnl If there is no setpgrp, the test for getpgrp(void) will fail
  dnl because the program will not compile.  However, in that case
  dnl we can be reasonably confident we are not dealing with a
  dnl Berkeleyesque system, so assume getpgrp does take void.
  ac_cv_func_getpgrp_void=yes
  AC_DEFINE(GETPGRP_VOID)
fi
AC_FUNC_STRCOLL

if test $dynamic = yes; then
  AC_CHECK_FUNCS(dlopen dlerror dlsym dlclose load loadquery loadbind unload \
		shl_load shl_unload shl_findsym)
fi


dnl -------------
dnl CHECK SIGNALS
dnl -------------
dnl What style of signal do you have (POSIX, BSD, or SYSV)?
AC_MSG_CHECKING(what style of signals to use)
if test $ac_cv_func_sigaction = yes -a $ac_cv_func_sigprocmask = yes; then
  signals_style=POSIX_SIGNALS
  AC_DEFINE(POSIX_SIGNALS)
elif test $ac_cv_func_sigblock = yes -a $ac_cv_func_sigsetmask = yes; then
  signals_style=BSD_SIGNALS
  AC_DEFINE(BSD_SIGNALS)
elif test $ac_cv_func_sighold = yes -a $ac_cv_func_sigrelse = yes; then
  signals_style=SYSV_SIGNALS
  AC_DEFINE(SYSV_SIGNALS)
else
  signals_style=NO_SIGNAL_BLOCKING
  AC_DEFINE(NO_SIGNAL_BLOCKING)
fi
AC_DEFINE_UNQUOTED($signals_style)
AC_MSG_RESULT($signals_style)

dnl Where is <signal.h> located?  Needed as input for signals.awk
AC_CACHE_CHECK(where signal.h is located, zsh_cv_path_signal_h,
[dnl Look at the output from the preprocessor.
dnl We should get lines of the form `# 1 "/usr/include/signal.h"'
dnl The following assumes the real definitions are in a file which
dnl contains the name `sig'; we could relax this if necessary,
dnl but then you can get a rather long list of files to test.
dnl The backslash substitution is to persuade cygwin to cough up
dnl slashes rather than doubled backslashes in the path.
echo "#include <signal.h>" > nametmp.c
sigfile_list="`$CPP nametmp.c |
sed -n 's/^#[ 	].*\"\(.*\)\"/\1/p' |
sed 's/\\\\\\\\/\//g' |
$AWK '{ if (\$1 ~ \"sig\") files[[\$1]] = \$1 }
  END { for (var in files) print var }'`"
rm -f nametmp.c
if test -z "$sigfile_list"; then
  dnl In case we don't get the stuff from the preprocesor, use the old
  dnl list of standard places.
  sigfile_list="/usr/include/sys/iso/signal_iso.h
/usr/include/bsd/sys/signal.h
/usr/include/signum.h
/usr/include/asm/signum.h
/usr/include/asm/signal.h
/usr/include/linux/signal.h
/usr/include/sys/signal.h
/usr/include/bits/signum.h
/dev/null"
fi
for SIGNAL_H in $sigfile_list
do
  dnl Try to make sure it doesn't get confused by files that don't
  dnl have real signal definitions in, but do #define SIG* by counting
  dnl the number of signals.  Maybe we could even check for e.g. SIGHUP?
  nsigs=`test -f $SIGNAL_H && \
  grep '#[ 	]*define[ 	][ 	]*SIG[0-9A-Z]*[ 	]*[0-9][0-9]*' $SIGNAL_H | \
  wc -l | sed 's/[ 	]//g'`
  test "x$nsigs" != x && test "$nsigs" -ge 7 && break
done
if test $SIGNAL_H = "/dev/null"; then
  AC_MSG_ERROR(SIGNAL MACROS NOT FOUND:  please report to developers)
fi
zsh_cv_path_signal_h=$SIGNAL_H
])
SIGNAL_H=$zsh_cv_path_signal_h
AC_SUBST(SIGNAL_H)dnl

dnl -----------------------------------------------------
dnl Look for the file containing the RLIMIT_* definitions
dnl -----------------------------------------------------
dnl CALL FOR MORE (FEWER?) LOCATIONS:  I've just copied the signal checking.
AC_CACHE_CHECK(where the RLIMIT macros are located,zsh_cv_path_rlimit_h,
[for RESOURCE_H in /usr/include/bsd/sys/resource.h   dnl
                   /usr/include/asm/resource.h	     dnl
                   /usr/include/linux/resource.h     dnl
                   /usr/include/sys/resource.h       dnl
                   /usr/include/bits/resource.h      dnl
                   /usr/include/resourcebits.h       dnl
                   /dev/null;
do
  test -f $RESOURCE_H && \
  grep '#[ 	]*define[ 	][ 	]*RLIMIT_[A-Z]*[ 	]*[0-9A-Z][0-9]*' $RESOURCE_H > /dev/null && \
  break
done
zsh_cv_path_rlimit_h=$RESOURCE_H
if test $RESOURCE_H = "/dev/null" -a $ac_cv_func_getrlimit = yes; then
  AC_MSG_WARN(RLIMIT MACROS NOT FOUND:  please report to developers)
fi])
RLIMITS_INC_H=$zsh_cv_path_rlimit_h
dnl rlimits.h only appears in dependencies if we are actually using it.
dnl We are using it any time we have getrlimit, though if the macros were
dnl not found we simply awk through /dev/null and fail to find them.
dnl Thus, limit won't work, but at least the shell will compile.
AC_SUBST(RLIMITS_INC_H)dnl

dnl ------------------
dnl rlimit type checks
dnl ------------------
DEFAULT_RLIM_T=long
AC_CACHE_CHECK(if rlim_t is longer than a long,
zsh_cv_rlim_t_is_longer,
[AC_TRY_RUN([
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/resource.h>
main(){struct rlimit r;exit(sizeof(r.rlim_cur) <= sizeof(long));}],
zsh_cv_rlim_t_is_longer=yes,
zsh_cv_rlim_t_is_longer=no,
zsh_cv_rlim_t_is_longer=yes)])
if test $zsh_cv_rlim_t_is_longer = yes; then
  AC_CACHE_CHECK(if rlim_t is a quad,
  zsh_cv_rlim_t_is_quad_t,
  [AC_TRY_RUN([
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <stdio.h>
#include <sys/resource.h>
main() { 
  struct rlimit r;
  char buf[20];
  r.rlim_cur = 0;
  sprintf(buf, "%qd", r.rlim_cur);
  exit(strcmp(buf, "0"));
}],
  zsh_cv_rlim_t_is_quad_t=yes,
  zsh_cv_rlim_t_is_quad_t=no,
  zsh_cv_rlim_t_is_quad_t=no)])
  if test $zsh_cv_rlim_t_is_quad_t = yes; then
    AC_DEFINE(RLIM_T_IS_QUAD_T)
    DEFAULT_RLIM_T=quad_t
  else
    AC_DEFINE(RLIM_T_IS_LONG_LONG)
    DEFAULT_RLIM_T='long long'
  fi
else
  AC_CACHE_CHECK(if the rlim_t is unsigned,
  zsh_cv_type_rlim_t_is_unsigned,
  [AC_TRY_RUN([
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/resource.h>
  main(){struct rlimit r;r.rlim_cur=-1;exit(r.rlim_cur<0);}],
  zsh_cv_type_rlim_t_is_unsigned=yes,
  zsh_cv_type_rlim_t_is_unsigned=no,
  zsh_cv_type_rlim_t_is_unsigned=no)])
  if test $zsh_cv_type_rlim_t_is_unsigned = yes; then
    AC_DEFINE(RLIM_T_IS_UNSIGNED)
    DEFAULT_RLIM_T="unsigned $DEFAULT_RLIM_T"
  fi
fi

AC_CACHE_CHECK(for rlim_t, zsh_cv_type_rlim_t,
[AC_TRY_COMPILE([
#include <sys/types.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/resource.h>],
[rlim_t l;],
zsh_cv_type_rlim_t=yes,
zsh_cv_type_rlim_t=no)])
if test $zsh_cv_type_rlim_t = no; then
  AC_DEFINE_UNQUOTED(rlim_t, $DEFAULT_RLIM_T)
fi

dnl ----------------------------
dnl CHECK FOR /dev/fd FILESYSTEM
dnl ----------------------------
AC_CACHE_CHECK(for /dev/fd filesystem, zsh_cv_sys_path_dev_fd,
[for zsh_cv_sys_path_dev_fd in /proc/self/fd /dev/fd no; do
   test x`echo ok|cat $zsh_cv_sys_path_dev_fd/0 2>/dev/null` = xok && break
 done])
if test $zsh_cv_sys_path_dev_fd != no; then
  AC_DEFINE_UNQUOTED(PATH_DEV_FD, "$zsh_cv_sys_path_dev_fd")
fi

dnl ---------------------------------
dnl CHECK FOR RFS SUPERROOT DIRECTORY
dnl ---------------------------------
AC_CACHE_CHECK(for RFS superroot directory, zsh_cv_sys_superroot,
[test -d /../.LOCALROOT && zsh_cv_sys_superroot=yes || zsh_cv_sys_superroot=no])
if test $zsh_cv_sys_superroot = yes; then
  AC_DEFINE(HAVE_SUPERROOT)
fi

dnl CHECK FOR SYSTEMS REQUIRING GETCWD
AC_CACHE_CHECK(whether we should use the native getcwd,
zsh_cv_use_getcwd,
[case "${host_cpu}-${host_vendor}-${host_os}" in
    *QNX*) zsh_cv_use_getcwd=yes ;;
    *) zsh_cv_use_getcwd=no ;;
 esac])
if test $zsh_cv_use_getcwd = yes; then
  AC_DEFINE(USE_GETCWD)
fi

dnl -------------
dnl CHECK FOR NIS
dnl -------------
AC_CACHE_CHECK(for NIS, zsh_cv_sys_nis,
[test -f /usr/bin/ypcat && /usr/bin/ypcat passwd.byname > /dev/null 2>&1 && \
zsh_cv_sys_nis=yes || zsh_cv_sys_nis=no])
if test $zsh_cv_sys_nis = yes; then
  AC_DEFINE(HAVE_NIS)
fi

dnl -----------------
dnl CHECK FOR NISPLUS
dnl -----------------
AC_CACHE_CHECK(for NIS+, zsh_cv_sys_nis_plus,
[test $ac_cv_func_nis_list = yes && test -f /usr/bin/nisls && \
 /usr/bin/nisls > /dev/null 2>&1 && \
zsh_cv_sys_nis_plus=yes || zsh_cv_sys_nis_plus=no])
if test $zsh_cv_sys_nis_plus = yes; then
  AC_DEFINE(HAVE_NIS_PLUS)
fi

dnl ----------------------------------------
dnl CHECK FOR LOCATION OF {U,W}TMP{,X} FILES
dnl ----------------------------------------
zsh_PATH_UTMP(utmp)
zsh_PATH_UTMP(wtmp)
zsh_PATH_UTMP(utmpx)
zsh_PATH_UTMP(wtmpx)

dnl -------------------
dnl brk/sbrk PROTOTYPES
dnl -------------------
AC_CACHE_CHECK(for brk() prototype in <unistd.h>,
zsh_cv_header_unistd_h_brk_proto,
[AC_TRY_COMPILE([#include <unistd.h>
double brk();], [int i;],
zsh_cv_header_unistd_h_brk_proto=no, zsh_cv_header_unistd_h_brk_proto=yes)])
if test $zsh_cv_header_unistd_h_brk_proto = yes; then
  AC_DEFINE(HAVE_BRK_PROTO)
fi

AC_CACHE_CHECK(for sbrk() prototype in <unistd.h>,
zsh_cv_header_unistd_h_sbrk_proto,
[AC_TRY_COMPILE([#include <unistd.h>
double sbrk();], [int i;],
zsh_cv_header_unistd_h_sbrk_proto=no, zsh_cv_header_unistd_h_sbrk_proto=yes)])
if test $zsh_cv_header_unistd_h_sbrk_proto = yes; then
  AC_DEFINE(HAVE_SBRK_PROTO)
fi

dnl ------------------------
dnl ioctl prototypes for OSF
dnl ------------------------

if test "$ac_cv_prog_cc_stdc" != no; then
  AC_CACHE_CHECK(for ioctl prototype in <sys/ioctl.h>,
  zsh_cv_header_sys_ioctl_h_ioctl_proto,
  [AC_TRY_COMPILE([#include <sys/ioctl.h>
   int ioctl(double x);], [int i;],
  zsh_cv_header_sys_ioctl_h_ioctl_proto=no,
  zsh_cv_header_sys_ioctl_h_ioctl_proto=yes)])
  if test $zsh_cv_header_sys_ioctl_h_ioctl_proto = yes; then
    AC_DEFINE(HAVE_IOCTL_PROTO)
  fi
fi

dnl -------------------
dnl select() defined in <sys/socket.h>, ie BeOS R4.51
dnl -------------------
if test $ac_cv_header_sys_select_h != yes; then
  AC_CACHE_CHECK(for select() in <sys/socket.h>,
  zsh_cv_header_socket_h_select_proto,
  [AC_TRY_COMPILE([#include <sys/socket.h>], [fd_set fd;],
  zsh_cv_header_socket_h_select_proto=yes, 
  zsh_cv_header_socket_h_select_proto=no)])
  if test $zsh_cv_header_socket_h_select_proto = yes; then
    AC_DEFINE(SELECT_IN_SYS_SOCKET_H)
  fi
fi

dnl -----------
dnl named FIFOs
dnl -----------
AC_CACHE_CHECK(if named FIFOs work,
zsh_cv_sys_fifo,
[AC_TRY_RUN([
#include <fcntl.h>
#include <signal.h>
main()
{
    char c;
    int fd;
    int pid, ret;
    unlink("/tmp/fifo$$");
#ifdef HAVE_MKFIFO
    if(mkfifo("/tmp/fifo$$", 0600) < 0)
#else
    if(mknod("/tmp/fifo$$", 0010600, 0) < 0)
#endif
	exit(1);
    pid = fork();
    if(pid < 0)
	exit(1);
    if(pid) {
	fd = open("/tmp/fifo$$", O_RDONLY);
	exit(fd < 0 || read(fd, &c, 1) != 1 || c != 'x');
    }
    fd = open("/tmp/fifo$$", O_WRONLY);
    ret = (fd < 0 || write(fd, "x", 1) < 1);
    unlink("/tmp/fifo$$");
    exit(ret);
}
],
  zsh_cv_sys_fifo=yes,
  zsh_cv_sys_fifo=no,
  zsh_cv_sys_fifo=yes)])
if test $zsh_cv_sys_fifo = yes; then
  AC_DEFINE(HAVE_FIFOS)
fi
dnl ---------------------
dnl echo style of /bin/sh
dnl ---------------------
AC_CACHE_CHECK(if echo in /bin/sh interprets escape sequences,
zsh_cv_prog_sh_echo_escape,
[if test "`/bin/sh -c \"echo '\\n'\"`" = "\\n"; then
  zsh_cv_prog_sh_echo_escape=no
else
  zsh_cv_prog_sh_echo_escape=yes
fi])
if test $zsh_cv_prog_sh_echo_escape = no; then
  AC_DEFINE(SH_USE_BSD_ECHO)
fi

dnl -----------
dnl test for whether link() works
dnl for instance, BeOS R4.51 doesn't support hard links yet
dnl -----------
AC_CACHE_CHECK(if link() works,
zsh_cv_sys_link,
[AC_TRY_RUN([
#include <unistd.h>
#include <fcntl.h>
main()
{
    int ret;
    char *tmpfile, *newfile;
    tmpfile="/tmp/zsh.linktest$$";
    newfile="/tmp/zsh.linktest2$$";
    unlink(tmpfile);
    unlink(newfile);
    if(creat(tmpfile, 0644) < 0)
	exit(1);
    ret = link(tmpfile, newfile);
    unlink(tmpfile);
    unlink(newfile);
    exit(ret<0);
}
],
  zsh_cv_sys_link=yes,
  zsh_cv_sys_link=no,
  zsh_cv_sys_link=yes)])
if test $zsh_cv_sys_link = yes; then
  AC_DEFINE(HAVE_LINK)
fi

dnl -----------
dnl test for whether kill(pid, 0) where pid doesn't exit
dnl should set errno to ESRCH, but some like BeOS R4.51 set to EINVAL
dnl -----------
AC_CACHE_CHECK(if kill(pid, 0) returns ESRCH correctly,
zsh_cv_sys_killesrch,
[AC_TRY_RUN([
#include <unistd.h>
#include <signal.h>
#include <errno.h>
main()
{
    int pid, ret;
    pid=getpid() + 10000;
    ret=kill(pid, 0);
    exit(ret<0 && errno!=ESRCH);
}
],
  zsh_cv_sys_killesrch=yes,
  zsh_cv_sys_killesrch=no,
  zsh_cv_sys_killesrch=yes)])
if test $zsh_cv_sys_killesrch = no; then
  AC_DEFINE(BROKEN_KILL_ESRCH)
fi

dnl -----------
dnl if POSIX, test for working sigsuspend().
dnl for instance, BeOS R4.51 is broken.
dnl -----------
if test $signals_style=POSIX_SIGNALS; then
    AC_CACHE_CHECK(if POSIX sigsuspend() works,
    zsh_cv_sys_sigsuspend,
    [AC_TRY_RUN([
#include <signal.h>
#include <unistd.h>
int child=0;
void handler(sig)
    int sig;
{if(sig==SIGCHLD) child=1;}
main() {
    struct sigaction act;
    sigset_t set;
    int pid, ret;
    act.sa_handler = &handler;
    sigfillset(&act.sa_mask);
    act.sa_flags = 0;
    sigaction(SIGCHLD, &act, 0);
    sigfillset(&set);
    sigprocmask(SIG_SETMASK, &set, 0);
    pid=fork();
    if(pid==0) return 0;
    if(pid>0) {
    sigemptyset(&set);
        ret=sigsuspend(&set);
        exit(child==0);
    }
}
],
      zsh_cv_sys_sigsuspend=yes,
      zsh_cv_sys_sigsuspend=no,
      zsh_cv_sys_sigsuspend=yes)])
    if test $zsh_cv_sys_sigsuspend = no; then
      AC_DEFINE(BROKEN_POSIX_SIGSUSPEND)
    fi
fi

dnl -----------
dnl if found tcsetpgrp, test to see if it actually works
dnl for instance, BeOS R4.51 does not support it yet
dnl -----------
if test -t 0 -a $ac_cv_func_tcsetpgrp=yes; then
    AC_CACHE_CHECK(if tcsetpgrp() actually works,
    zsh_cv_sys_tcsetpgrp,
    [AC_TRY_RUN([
#include <sys/types.h>
#include <unistd.h>
main() {
    int ret;
    ret=tcsetpgrp(0, tcgetpgrp(0));
    exit(ret<0);
}
],
      zsh_cv_sys_tcsetpgrp=yes,
      zsh_cv_sys_tcsetpgrp=no,
      zsh_cv_sys_tcsetpgrp=yes)])
    if test $zsh_cv_sys_tcsetpgrp = no; then
      AC_DEFINE(BROKEN_TCSETPGRP)
    fi
fi

dnl -----------
dnl test for faked getpwnam() entry, ie a single entry returned for any username
dnl for instance, BeOS R4.51 is not multiuser yet, and fakes getpwnam()
dnl test by looking up two usernames that shouldn't succeed, and compare entry
dnl -----------
if test $ac_cv_func_getpwnam=yes; then
    AC_CACHE_CHECK(if getpwnam() is faked,
    zsh_cv_sys_getpwnam_faked,
    [AC_TRY_RUN([
#include <pwd.h>
main() {
    struct passwd *pw1, *pw2;
    char buf[1024], name[1024];
    sprintf(buf, "%d:%d", getpid(), rand());
    pw1=getpwnam(buf);
    if (pw1) strcpy(name, pw1->pw_name);
    sprintf(buf, "%d:%d", rand(), getpid());
    pw2=getpwnam(buf);
    exit(pw1!=0 && pw2!=0 && !strcmp(name, pw2->pw_name));
}
],
      zsh_cv_sys_getpwnam_faked=no,
      zsh_cv_sys_getpwnam_faked=yes,
      zsh_cv_sys_getpwnam_faked=no)])
    if test $zsh_cv_sys_getpwnam_faked = yes; then
      AC_DEFINE(GETPWNAM_FAKED)
    fi
fi

dnl ---------------
dnl dynamic loading
dnl ---------------
L=N
aixdynamic=no
hpuxdynamic=no
if test "$ac_cv_func_dlopen"  != yes ||
   test "$ac_cv_func_dlsym"   != yes ||
   test "$ac_cv_func_dlerror" != yes; then
  if test "$ac_cv_func_load"      != yes ||
     test "$ac_cv_func_unload"    != yes ||
     test "$ac_cv_func_loadbind"  != yes ||
     test "$ac_cv_func_loadquery" != yes; then
    if test "$ac_cv_func_shl_load" != yes ||
       test "$ac_cv_func_shl_unload" != yes ||
       test "$ac_cv_func_shl_findsym" != yes; then
      dynamic=no
    elif test "x$dynamic" = xyes; then
      hpuxdynamic=yes
      DL_EXT="${DL_EXT=sl}"
      dnl autoheader won't allow us to define anything which isn't
      dnl going into a header, and we can't undefine anything, so
      dnl just define this anyway and rely on the later tests to
      dnl define DYNAMIC or not.
      AC_DEFINE(HPUXDYNAMIC)dnl
    fi
  elif test "x$dynamic" = xyes; then
    aixdynamic=yes
  fi
fi

test -n "$GCC" && LDARG=-Wl,

if test "x$aixdynamic" = xyes; then
  DL_EXT="${DL_EXT=so}"
  DLLD="${DLLD=$CC}"
  zsh_cv_func_dlsym_needs_underscore=no
  DLLDFLAGS=${DLLDFLAGS=}
  EXTRA_LDFLAGS=${EXTRA_LDFLAGS=}
  EXPOPT=${LDARG}-bE:
  IMPOPT=${LDARG}-bI:
  zsh_cv_sys_dynamic_clash_ok="${zsh_cv_sys_dynamic_clash_ok=yes}"
  zsh_cv_sys_dynamic_rtld_global="${zsh_cv_sys_dynamic_rtld_global=yes}"
  zsh_cv_sys_dynamic_execsyms="${zsh_cv_sys_dynamic_execsyms=yes}"
  zsh_cv_sys_dynamic_strip_exe="${zsh_cv_sys_dynamic_strip_exe=yes}"
  zsh_cv_sys_dynamic_strip_lib="${zsh_cv_sys_dynamic_strip_lib=yes}"
  zsh_cv_sys_dynamic_broken="${zsh_cv_sys_dynamic_broken=no}"
elif test "x$dynamic" = xyes; then
  AC_CACHE_CHECK(if your system use ELF binaries,
   zsh_cv_sys_elf,
   [AC_TRY_RUN([/* Test for whether ELF binaries are produced */
#include <fcntl.h>
#include <stdlib.h>
main(argc, argv)
int argc;
char *argv[];
{
	char b[4];
	int i = open(argv[0],O_RDONLY);
	if(i == -1) 
		exit(1); /* fail */
	if(read(i,b,4)==4 && b[0]==127 && b[1]=='E' && b[2]=='L' && b[3]=='F')
		exit(0); /* succeed (yes, it's ELF) */
	else
		exit(1); /* fail */
}],
  zsh_cv_sys_elf=yes,
  zsh_cv_sys_elf=no,
  zsh_cv_sys_elf=yes)])
  DL_EXT="${DL_EXT=so}"
  if test $zsh_cv_sys_elf = yes; then
    DLLD="${DLLD=$CC}"
    DLLDARG="${LDARG}"
  else
    DLLD="${DLLD=ld}"
    DLLDARG=""
  fi
  if test -n "$GCC"; then
    DLCFLAGS="${DLCFLAGS=-fpic}"
  else
    case "$host_os" in
      hpux*)                 DLCFLAGS="${DLCFLAGS=+z}" ;;
      sunos*)                DLCFLAGS="${DLCFLAGS=-pic}" ;;
      solaris*|sysv4*|esix*) DLCFLAGS="${DLCFLAGS=-Kpic}" ;;
    esac
  fi
  case "$host_os" in
    hpux*)        DLLDFLAGS="${DLLDFLAGS=-b}" ;;
    freebsd*|linux*|irix*|osf*) DLLDFLAGS="${DLLDFLAGS=-shared}" ;;
    sunos*)       DLLDFLAGS="${DLLDFLAGS=-assert nodefinitions}" ;;
    sysv4*|esix*) DLLDFLAGS="${DLLDFLAGS=-G $ldflags}" ;;
    netbsd*)      DLLDFLAGS="${DLLDFLAGS=${DLLDARG}-x -shared --whole-archive}" ;;
    aix*)         DLLDFLAGS="${DLLDFLAGS=-G -bexpall -lc}" ;;
    solaris*|sysv4*|esix*) DLLDFLAGS="${DLLDFLAGS=-G}" ;;
  esac
  case "$host" in
    *-hpux*)  EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-Wl,-E}" ;;
    *-freebsd3*|*-freebsd4*|*-linux*) EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-rdynamic}" ;;
    mips-sni-sysv4)
      #
      # unfortunately, we have different compilers
      # that need different flags
      #
      sni_cc_version=`$CC -V 2>&1 | head -1`
      case "$sni_cc_version" in
        *CDS* )
         EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-Wl,-Blargedynsym}"
       ;;
       * )
         EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-LD-Blargedynsym}"
       ;;
      esac
    ;;
  esac
  AC_CACHE_CHECK(if your dlsym() needs a leading underscore,
   zsh_cv_func_dlsym_needs_underscore,
   [echo failed >conftestval && cat >conftest.c <<EOM
fred () { }
EOM
    $CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest.c 1>&5 2>&5 &&
    $DLLD -o conftest.$DL_EXT $LDFLAGS $DLLDFLAGS conftest.o 1>&5 2>&5 &&
    AC_TRY_RUN([
#include <stdio.h>
#ifdef HPUXDYNAMIC
#include <dl.h>
#define RTLD_LAZY BIND_DEFERRED
#define RTLD_GLOBAL DYNAMIC_PATH

char *zsh_gl_sym_addr ;

#define dlopen(file,mode) (void *)shl_load((file), (mode), (long) 0)
#define dlclose(handle) shl_unload((shl_t)(handle))
#define dlsym(handle,name) (zsh_gl_sym_addr=0,shl_findsym((shl_t *)&(handle),name,TYPE_UNDEFINED,&zsh_gl_sym_addr), (void *)zsh_gl_sym_addr)
#define dlerror() 0
#else
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#else
#include <sys/types.h>
#include <nlist.h>
#include <link.h>
#endif
#endif
#ifndef RTLD_LAZY
#define RTLD_LAZY 1
#endif

extern int fred() ;

main()
{
    void * handle ;
    void * symbol ;
    FILE *f=fopen("conftestval", "w");
    if (!f) exit(1);
    handle = dlopen("./conftest.$DL_EXT", RTLD_LAZY) ;
    if (handle == NULL) {
        fprintf (f, "dlopen failed") ;
            exit(1);
    }
    symbol = dlsym(handle, "fred") ;
    if (symbol == NULL) {
                /* try putting a leading underscore */
        symbol = dlsym(handle, "_fred") ;
        if (symbol == NULL) {
            fprintf (f, "dlsym failed") ;
                exit(1);
                }
        fprintf (f, "yes") ;
    }
    else
        fprintf (f, "no") ;
    exit(0);
}], zsh_cv_func_dlsym_needs_underscore=`cat conftestval`,
    zsh_cv_func_dlsym_needs_underscore=failed
    dynamic=no,
    zsh_cv_func_dlsym_needs_underscore=no)])
  if test "x$zsh_cv_func_dlsym_needs_underscore" = xyes; then
    AC_DEFINE(DLSYM_NEEDS_UNDERSCORE)
  elif test "x$zsh_cv_func_dlsym_needs_underscore" != xno; then
    dnl Do not cache failed value
    unset zsh_cv_func_dlsym_needs_underscore
  fi
fi

if test "x$dynamic" = xyes; then
  zsh_SYS_DYNAMIC_BROKEN
  test "$zsh_cv_sys_dynamic_broken" = no || dynamic=no
fi

if test "x$dynamic" = xyes; then
  zsh_SYS_DYNAMIC_CLASH
  zsh_SYS_DYNAMIC_GLOBAL
  RTLD_GLOBAL_OK=$zsh_cv_sys_dynamic_rtld_global
  zsh_SYS_DYNAMIC_EXECSYMS
  if test "$zsh_cv_sys_dynamic_execsyms" != yes; then
    L=L
  fi
  zsh_SYS_DYNAMIC_STRIP_EXE
  zsh_SYS_DYNAMIC_STRIP_LIB
  if $strip_exeldflags && test "$zsh_cv_sys_dynamic_strip_exe" = yes; then
    EXELDFLAGS="$EXELDFLAGS -s"
  fi
  if $strip_libldflags && test "$zsh_cv_sys_dynamic_strip_lib" = yes; then
    LIBLDFLAGS="$LIBLDFLAGS -s"
  fi
else
  $strip_exeldflags && EXELDFLAGS="$EXELDFLAGS -s"
  $strip_libldflags && LIBLDFLAGS="$LIBLDFLAGS -s"
  RTLD_GLOBAL_OK=no
fi

if test "x$dynamic" = xyes; then
  D=D
  AC_DEFINE(DYNAMIC)dnl
else
  D=N
fi

if test "x$aixdynamic" = xyes; then
  E=E
  AC_DEFINE(AIXDYNAMIC)dnl
else
  E=N
fi

if test "x$zsh_cv_sys_dynamic_clash_ok" = xyes; then
  SHORTBOOTNAMES=yes
else
  SHORTBOOTNAMES=no
fi
AC_SUBST(SHORTBOOTNAMES)

AC_DEFINE_UNQUOTED(DL_EXT, "$DL_EXT")dnl
AC_SUBST(D)dnl
AC_SUBST(DL_EXT)dnl
AC_SUBST(DLLD)dnl
AC_SUBST(DLCFLAGS)dnl
AC_SUBST(DLLDFLAGS)dnl
AC_SUBST(E)dnl
AC_SUBST(EXTRA_LDFLAGS)dnl
AC_SUBST(EXPOPT)dnl
AC_SUBST(IMPOPT)dnl
AC_SUBST(L)dnl
AC_SUBST(RTLD_GLOBAL_OK)dnl

CLEAN_MK="${srcdir}/Config/clean.mk"
CONFIG_MK="${srcdir}/Config/config.mk"
dnl defs.mk is in the build tree, not the source tree
DEFS_MK="Config/defs.mk"
FUNCINST_MK="${srcdir}/Config/funcinst.mk"
VERSION_MK="${srcdir}/Config/version.mk"

AC_SUBST_FILE(CLEAN_MK)dnl
AC_SUBST_FILE(CONFIG_MK)dnl
AC_SUBST_FILE(DEFS_MK)dnl
AC_SUBST_FILE(FUNCINST_MK)dnl
AC_SUBST_FILE(VERSION_MK)dnl

real_no_create=$no_create
no_create=yes

AC_OUTPUT(Config/defs.mk Makefile Doc/Makefile Etc/Makefile Src/Makefile \
Test/Makefile Completion/Makefile Functions/Makefile, \
[test -z "$CONFIG_HEADERS" || echo > stamp-h])

dnl The standard config.status is missing some essential features.
dnl So add them now.
[rm -f $CONFIG_STATUS.old
cp $CONFIG_STATUS $CONFIG_STATUS.old
sed '1,$s@^\( *ac_file_inputs=\).*$@\1`echo $ac_file_in | sed -e "s%^%:%" -e "s%:\\([^!]\\)% $ac_given_srcdir/\\1%g" -e "s%:!% %"`@' \
 $CONFIG_STATUS.old >$CONFIG_STATUS
 rm -f $CONFIG_STATUS.old]

test "$real_no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1

eval "zshbin1=${bindir}"
eval "zshbin2=${zshbin1}"
eval "zshman=${mandir}"
eval "zshinfo=${infodir}"
eval "zshfndir=${fndir}"

echo "
zsh configuration
-----------------
zsh version               : ${VERSION}
host operating system     : ${host_cpu}-${host_vendor}-${host_os}
source code location      : ${srcdir}
compiler                  : ${CC}
preprocessor flags        : ${CPPFLAGS}
executable compiler flags : ${CFLAGS}"
if test "$dynamic" = yes; then
  echo "\
module compiler flags     : ${CFLAGS} ${DLCFLAGS}"
fi
echo "\
executable linker flags   : ${LDFLAGS} ${EXELDFLAGS} ${EXTRA_LDFLAGS}"
if test "$dynamic" = yes; then
  echo "\
module linker flags       : ${LDFLAGS} ${LIBLDFLAGS} ${DLLDFLAGS}"
fi
echo "\
library flags             : ${LIBS}
installation basename     : ${tzsh_name}
binary install path       : ${zshbin2}
man page install path     : ${zshman}
info install path         : ${zshinfo}"
if test "$zshfndir" != no; then
echo "functions install path    : ${zshfndir}
installed functions       : ${FUNCTIONS_INSTALL}
"
fi