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_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 Handle setting of compile flags (CPPFLAGS, CFLAGS, LDFLAGS, LIBS).
zsh_COMPILE_FLAGS($CPPFLAGS, $CFLAGS, $LDFLAGS, $LIBS)

dnl Do you want to debug zsh?
ifdef([zsh-debug],[undefine([zsh-debug])])dnl
AC_ARG_ENABLE(zsh-debug,
[  --enable-zsh-debug         compile with debug code and debugger symbols],
[if test x$enableval = xyes; then
  AC_DEFINE(DEBUG)
fi])

dnl Do you want zsh memory allocation routines.
ifdef([zsh-mem],[undefine([zsh-mem])])dnl
AC_ARG_ENABLE(zsh-mem,
[  --enable-zsh-mem           compile with 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.
ifdef([zsh-mem-debug],[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.
ifdef([zsh-mem-warning],[undefine([zsh-mem-warning])])dnl
AC_ARG_ENABLE(zsh-mem-warning,
[  --enable-zsh-mem-warning   print warnings for errors 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().
ifdef([zsh-secure-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.
ifdef([zsh-hash-debug],[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 Pathnames for global zsh scripts
ifdef([etcdir],[undefine([etcdir])])dnl
AC_ARG_ENABLE(etcdir,
[  --enable-etcdir=DIR        the default directory for global zsh scripts],
[etcdir="$enableval"], [etcdir=/etc])

ifdef([zshenv],[undefine([zshenv])])dnl
AC_ARG_ENABLE(zshenv,
[  --enable-zshenv=FILE       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

ifdef([zshrc],[undefine([zshrc])])dnl
AC_ARG_ENABLE(zshrc,
[  --enable-zshrc=FILE        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

ifdef([zprofile],[undefine([zprofile])])dnl
AC_ARG_ENABLE(zprofile,
[  --enable-zprofile=FILE     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

ifdef([zlogin],[undefine([zlogin])])dnl
AC_ARG_ENABLE(zlogin,
[  --enable-zlogin=FILE       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

ifdef([zlogout],[undefine([zlogout])])dnl
AC_ARG_ENABLE(zlogout,
[  --enable-zlogout=FILE      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 large file support, if available?
ifdef([lfs],[undefine([lfs])])dnl
AC_ARG_ENABLE(lfs,
[  --disable-lfs              turn off support for large files],
[lfs="$enableval"], [lfs=yes])

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

dnl Do you want to disable restricted on r* commands
ifdef([restricted-r],[undefine([restricted-r])])dnl
AC_ARG_ENABLE(restricted-r,
[  --disable-restricted-r     turn off r* invocation for restricted shell],
[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)
)

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])

ifdef([fndir],[undefine([fndir])])dnl
AC_ARG_ENABLE(fndir,
[  --enable-fndir=DIR         the directory in which to install functions],
dnl ${VERSION} to be determined at compile time.
[if test $enableval = yes; then
  fndir=${datadir}/${tzsh_name}/'${VERSION}'/functions
else
  fndir="$enableval"
fi], [fndir=${datadir}/${tzsh_name}/'${VERSION}'/functions])

ifdef([sitefndir],[undefine([sitefndir])])dnl
AC_ARG_ENABLE(site-fndir,
[  --enable-site-fndir=DIR    same for site functions (not version specific)],
[if test $enableval = yes; then
  sitefndir=${datadir}/${tzsh_name}/site-functions
else
  sitefndir="$enableval"
fi], [sitefndir=${datadir}/${tzsh_name}/site-functions])

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

if test "x${enable_function_subdirs}" != x &&
  test "x${enable_function_subdirs}" != xno; then
  FUNCTIONS_SUBDIRS=yes
else
  FUNCTIONS_SUBDIRS=no
fi

AC_SUBST(fndir)dnl
AC_SUBST(sitefndir)dnl
AC_SUBST(FUNCTIONS_SUBDIRS)dnl

dnl Do you want maildir support?
ifdef([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 Do you want to set a maximum function depth?
ifdef([max_function_depth],[undefine([max_function_depth])])dnl
AC_ARG_ENABLE(max-function-depth,
[  --enable-max-function-depth=MAX   limit function depth to MAX],
[if test x$enableval = xyes; then
  AC_DEFINE(MAX_FUNCTION_DEPTH, 4096)
else
  AC_DEFINE_UNQUOTED(MAX_FUNCTION_DEPTH, $enableval)
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 $lfs != no; then
dnl Gross hack for ReliantUNIX - GCC does not understand getconf options
dnl For now just disable LFS in this case
dnl Any takers?
  if test "$host" = mips-sni-sysv4 && test -n "$GCC"; then
    : 
  else
    zsh_LARGE_FILE_SUPPORT
  fi
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 "$auto_cflags" && test ."$ansi2knr" != .yes; then
  if test "${enable_zsh_debug}" = yes; then
    if test -n "$GCC"; then
      CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -ggdb"
    else
      CFLAGS="$CFLAGS -g"
    fi
  else
    if test -n "$GCC"; then
      CFLAGS="$CFLAGS -Wall -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*|yesopenbsd*) ;;  # "ld -g" is not valid on these systems
    darwin*) LDFLAGS=-Wl,-x ;;
    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'.

AC_CYGWIN                   dnl Check for cygwin environment

AC_EXEEXT                   dnl Check for executable extension, e.g. .exe

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

AC_MSG_CHECKING(what to set MAXJOB to)
dnl Do you want to alter the maximum job table size?
ifdef([max_jobtable_size],[undefine([max_jobtable_size])])dnl
AC_ARG_ENABLE(max-jobtable-size,
[  --enable-max-jobtable-size=MAX    limit job table size to MAX],

[if test x$enableval = xyes; then

   AC_EGREP_CPP(yes,
   [#include <linux/tasks.h>
    #ifdef MAX_TASKS_PER_USER
    yes
    #endif
   ],
   maxj=max)

   if test x$maxj = xmax; then
    AC_DEFINE(MAXJOB, MAX_TASKS_PER_USER)
    AC_DEFINE(NEED_LINUX_TASKS_H)
    AC_MSG_RESULT(${msg}MAX_TASKS_PER_USER)
   else
    AC_DEFINE(MAXJOB, 256)
    AC_MSG_RESULT(${msg}256)
   fi

 elif test x$enableval = xno; then
 AC_DEFINE(MAXJOB,512)
 AC_MSG_RESULT(${msg}512)
 else
 AC_DEFINE_UNQUOTED(MAXJOB,$enableval)
 AC_MSG_RESULT(${msg}${enableval}) 
fi],
[
AC_DEFINE(MAXJOB, 50)
 AC_MSG_RESULT(${msg}50) 
])

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])
AC_CHECK_PROGS([ANSI2KNR], [ansi2knr], [: ansi2knr])

if test x"$ansi2knr" = xyes && test x"$ANSI2KNR" = x": ansi2knr"; then
    echo "----------"
    echo "configure fatal error:"
    echo "ansi2knr was specified (--enable-ansi2knr) but the program could not be found."
    echo "Either remove the configure option if it is not required or build the ansi2knr"
    echo "program before reconfiguring Zsh.  The source code for ansi2knr is also"
    echo "available in the GPL directory on Zsh distribution sites."
    exit 1
fi

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 \
		 netinet/in_systm.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 && test $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.
dnl On ReliantUNIX -lc better be the last library, else funny things
dnl may happen.
AC_CHECK_LIB(c, printf, [LIBS="$LIBS -lc"])

AC_CHECK_LIB(m, pow)

dnl Prefer BSD termcap library to SysV curses library, except on certain
dnl SYSV-derived systems.
AC_ARG_WITH(curses-terminfo,
[  --with-curses-terminfo     use terminfo support from curses library],
[if test x$withval = xyes; then
  termcap_curses_order="tinfo curses ncurses termcap"
  AC_SEARCH_LIBS(tigetstr, [$termcap_curses_order])
else
  termcap_curses_order="tinfo termcap curses ncurses"
fi],
[case "$host_os" in
  hpux10.*|hpux11.*|solaris*)
      termcap_curses_order="curses ncurses termcap" ;;
  *)             termcap_curses_order="tinfo termcap curses ncurses" ;;
esac])dnl

AC_SEARCH_LIBS(tgetent, [$termcap_curses_order])
case "$LIBS" in
*curses*)
AC_CHECK_HEADERS(curses.h, [],
[AC_CACHE_CHECK(for Solaris 8 curses.h mistake, ac_cv_header_curses_solaris,
AC_TRY_COMPILE([#include <curses.h>], [],
[ac_cv_header_curses_h=yes
ac_cv_header_curses_solaris=yes],
ac_cv_header_curses_h=no
ac_cv_header_curses_solaris=no))
if test x$ac_cv_header_curses_solaris = xyes; then
AC_DEFINE(HAVE_CURSES_H)
fi])
AC_CHECK_HEADERS(term.h,
[AC_MSG_CHECKING(if term.h needs curses.h)
AC_TRY_COMPILE([#include <term.h>], [char **test = boolcodes;], boolcodes_with_only_term_h=yes,
boolcodes_with_only_term_h=no)
AC_TRY_COMPILE([#include <curses.h>
#include <term.h>], [char **test = boolcodes;], boolcodes_with_curses_h_and_term_h=yes,
boolcodes_with_curses_h_and_term_h=no)
if test "x$boolcodes_with_curses_h_and_term_h" = xyes && test "x$boolcodes_with_only_term_h" = xno;
then
AC_DEFINE(TERM_H_NEEDS_CURSES_H)
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi

AC_MSG_CHECKING(if boolcodes is available)
AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
#include <curses.h>
#endif
#include <term.h>], [char **test = boolcodes; printf(*test);],
AC_DEFINE(HAVE_BOOLCODES) boolcodes=yes, boolcodes=no)
AC_MSG_RESULT($boolcodes)
AC_MSG_CHECKING(if numcodes is available)
AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
#include <curses.h>
#endif
#include <term.h>], [char **test = numcodes; printf(*test);],
AC_DEFINE(HAVE_NUMCODES) numcodes=yes, numcodes=no)
AC_MSG_RESULT($numcodes)
AC_MSG_CHECKING(if strcodes is available)
AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
#include <curses.h>
#endif
#include <term.h>], [char **test = strcodes; printf(*test);],
AC_DEFINE(HAVE_STRCODES) strcodes=yes, strcodes=no)
AC_MSG_RESULT($strcodes)
AC_MSG_CHECKING(if boolnames is available)
AC_TRY_LINK([#include <curses.h>
#include <term.h>], [char **test = boolnames; printf(*test);],
AC_DEFINE(HAVE_BOOLNAMES) boolnames=yes, boolnames=no)
AC_MSG_RESULT($boolnames)
AC_MSG_CHECKING(if numnames is available)
AC_TRY_LINK([#include <curses.h>
#include <term.h>], [char **test = numnames; printf(*test);],
AC_DEFINE(HAVE_NUMNAMES) numnames=yes, numnames=no)
AC_MSG_RESULT($numnames)
AC_MSG_CHECKING(if strnames is available)
AC_TRY_LINK([#include <curses.h>
#include <term.h>], [char **test = strnames; printf(*test);],
AC_DEFINE(HAVE_STRNAMES) strnames=yes, strnames=no)
AC_MSG_RESULT($strnames)
]);;
esac

dnl Some systems (Solaris 2.x, Linux Redhat 5.x) require
dnl libnsl (Network Services Library) to find yp_all

AC_SEARCH_LIBS(yp_all, nsl)

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 --------------
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 && test $lfs != no; then
      zsh_64_BIT_TYPE(${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 "$zsh_cv_64_bit_type" = no &&
          test "$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 Check for h_errno external variable
AC_CACHE_CHECK(if we need our own h_errno,
  zsh_cv_decl_h_errno_use_local,
  [AC_TRY_LINK( ,[extern int h_errno; h_errno = 0;],
  zsh_cv_decl_h_errno_use_local=no,
  zsh_cv_decl_h_errno_use_local=yes)])

if test $zsh_cv_decl_h_errno_use_local = yes; then
  AC_DEFINE(USE_LOCAL_H_ERRNO)
fi

dnl ---------------
dnl CHECK FUNCTIONS
dnl ---------------

dnl need to integrate this function
dnl AC_FUNC_STRFTIME

AC_CHECK_FUNCS(strftime difftime gettimeofday \
	       select poll \
	       readlink lstat lchown faccessx fchdir ftruncate \
	       fseeko ftello \
	       mkfifo _mktemp \
	       waitpid wait3 \
	       sigaction sigblock sighold sigrelse sigsetmask sigprocmask \
	       killpg setpgid setpgrp tcsetpgrp tcgetattr nice \
	       gethostname gethostbyname2 getipnodebyname \
	       inet_aton inet_pton inet_ntop \
	       getlogin getpwent getpwnam getpwuid getgrgid getgrnam \
	       initgroups nis_list \
	       setuid seteuid setreuid setresuid setsid \
	       memcpy memmove strstr strerror \
	       cap_get_proc \
	       getrlimit \
	       setlocale \
	       uname \
	       signgam \
	       putenv getenv \
	       brk sbrk \
	       pathconf sysconf \
	       tgetent tigetflag tigetnum tigetstr setupterm)
AC_FUNC_STRCOLL

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().
dnl  Under Cygwin test program crashes but exit code is still 0. So,
dnl  we test for a file that porgram should create
AC_CACHE_CHECK(if tgetent accepts NULL,
zsh_cv_func_tgetent_accepts_null,
[AC_TRY_RUN([
main()
{
    char buf[4096];
    int r1 = tgetent(buf, "vt100");
    int r2 = tgetent((char*)0,"vt100");
    if (r1 >= 0 && r1 == r2) {
        char tbuf[1024], *u;
        u = tbuf;
    	tgetstr("cl", &u);
	creat("conftest.tgetent", 0640);
    }
    exit((r1 != r2) || r2 == -1);
}
],
  if test -f conftest.tgetent; then
    zsh_cv_func_tgetent_accepts_null=yes
  else
    zsh_cv_func_tgetent_accepts_null=no
  fi,
  zsh_cv_func_tgetent_accepts_null=no,
  zsh_cv_func_tgetent_accepts_null=no)])
if test $zsh_cv_func_tgetent_accepts_null = yes; then
  AC_DEFINE(TGETENT_ACCEPTS_NULL)
fi
AC_CACHE_CHECK(if tgetent returns 0 on success,
zsh_cv_func_tgetent_zero_success,
[AC_TRY_RUN([
main()
{
    char buf[4096];
    int r1 = tgetent(buf, "!@#$%^&*");
    int r2 = tgetent(buf, "vt100");
    if (r1 < 0 && r2 == 0) {
        char tbuf[1024], *u;
        u = tbuf;
    	tgetstr("cl", &u);
	creat("conftest.tgetent0", 0640);
    }
    exit(r1 == r2);
}
],
  if test -f conftest.tgetent0; then
    zsh_cv_func_tgetent_zero_success=yes
  else
    zsh_cv_func_tgetent_zero_success=no
  fi,
  zsh_cv_func_tgetent_zero_success=no,
  zsh_cv_func_tgetent_zero_success=no)])
if test $zsh_cv_func_tgetent_zero_success = yes; then
  AC_DEFINE(TGETENT_SUCCESS, 0)
else
  AC_DEFINE(TGETENT_SUCCESS, 1)
fi

AC_FUNC_MMAP
if test x$ac_cv_func_mmap_fixed_mapped = xyes; then
  AC_CHECK_FUNCS(munmap msync)
fi

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

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 && test $ac_cv_func_sigprocmask = yes; then
  signals_style=POSIX_SIGNALS
  AC_DEFINE(POSIX_SIGNALS)
elif test $ac_cv_func_sigblock = yes && test $ac_cv_func_sigsetmask = yes; then
  signals_style=BSD_SIGNALS
  AC_DEFINE(BSD_SIGNALS)
elif test $ac_cv_func_sighold = yes && test $ac_cv_func_sigrelse = yes; then
  signals_style=SYSV_SIGNALS
  AC_DEFINE(SYSV_SIGNALS)
else
  signals_style=NO_SIGNAL_BLOCKING
  AC_DEFINE(NO_SIGNAL_BLOCKING)
fi
AC_DEFINE_UNQUOTED($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" && test $ac_cv_func_getrlimit = yes; then
  AC_MSG_WARN(RLIMIT MACROS NOT FOUND:  please report to developers)
fi])
RLIMITS_INC_H=$zsh_cv_path_rlimit_h
if test "$RLIMITS_INC_H" = "/dev/null"; then
  RLIMITS_INC_H=''
fi
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 and mknod 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
  AC_CACHE_CHECK(for mknod prototype in <sys/stat.h>,
  zsh_cv_header_sys_stat_h_mknod_proto,
  [AC_TRY_COMPILE([#include <sys/stat.h>
   int mknod(double x);], [int i;],
  zsh_cv_header_sys_stat_h_mknod_proto=no,
  zsh_cv_header_sys_stat_h_mknod_proto=yes)])
  if test $zsh_cv_header_sys_stat_h_mknod_proto = yes; then
    AC_DEFINE(HAVE_MKNOD_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 = (getpid() + 10000) & 0xffffff;
    while (pid && (kill(pid, 0) == 0 || errno != ESRCH)) pid >>= 1;
    exit(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 && test $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 check for the type of third argument of accept
dnl ---------------

zsh_CHECK_SOCKLEN_T

dnl ---------------
dnl dynamic loading
dnl ---------------
L=N
INSTLIB="install.bin-\$(L)"
UNINSTLIB="uninstall.bin-\$(L)"
LINKMODS=NOLINKMODS
MOD_EXPORT=
MOD_IMPORT_VARIABLE=
MOD_IMPORT_FUNCTION=
aixdynamic=no
hpuxdynamic=no
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
  dnl Force AIXDYNAMIC even on newer versions that have dl family
  if test "x$dynamic" = xyes; then
    aixdynamic=yes
  fi
elif test "$ac_cv_func_dlopen"  != yes ||
     test "$ac_cv_func_dlsym"   != yes ||
     test "$ac_cv_func_dlerror" != 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
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
  if test -n "$GCC"; then
    DLLDFLAGS=${DLLDFLAGS=-shared}
  else
    DLLDFLAGS=${DLLDFLAGS=-bM:SRE}
  fi
  DLLDFLAGS=${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_shared_environ="${zsh_cv_shared_environ=yes}"
elif test "$host_os" = cygwin; then
  DL_EXT="${DL_EXT=dll}"
  DLLD="${DLLD=dllwrap}"
  DLLDFLAGS="${DLLDFLAGS=--export-all-symbols}"
  zsh_cv_func_dlsym_needs_underscore=no
  DLLDFLAGS=${DLLDFLAGS=}
  EXTRA_LDFLAGS=${EXTRA_LDFLAGS=}
  zsh_cv_sys_dynamic_clash_ok="${zsh_cv_sys_dynamic_clash_ok=no}"
  zsh_cv_sys_dynamic_rtld_global="${zsh_cv_sys_dynamic_rtld_global=yes}"
  zsh_cv_sys_dynamic_execsyms="${zsh_cv_sys_dynamic_execsyms=no}"
  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}"
  #
  # THAT SUCKS! and must be changed
  #
  zsh_cv_shared_environ="${zsh_cv_shared_environ=yes}"
  LINKMODS=LINKMODS
  MOD_EXPORT="__attribute__((__dllexport__))"
  MOD_IMPORT_VARIABLE="__attribute__((__dllimport__))"
  MOD_IMPORT_FUNCTION=
elif test "x$dynamic" = xyes; then
  AC_CACHE_CHECK(if your system uses 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 $zsh_cv_sys_elf = yes; then
    case "$host" in
      mips-sni-sysv4*)
        # Forcibly set ld to native compiler to avoid obscure GCC problems
	DLLD="${DLLD=/usr/ccs/bin/cc}"
	DLLDARG="${LDARG}"
      ;;
      * )
	DLLD="${DLLD=$CC}"
	DLLDARG="${LDARG}"
      ;;
    esac
  else
    case "$host" in
      *openbsd*)
	case "$host_os" in
	  openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
	    DLLD="${DLLD=ld}"
	  ;;
	  *)
	    DLLD="${DLLD=$CC}"
	  ;;
	esac
	DLLDARG="${LDARG}"
      ;;
      *darwin*)
        DLLD="${DLLD=$CC}"
        DLLDARG=""
      ;;
      * )
	DLLD="${DLLD=ld}"
	DLLDARG=""
      ;;
    esac
  fi
  if test -n "$GCC"; then
    case "$host_os" in
      darwin*) DLCFLAGS="${DLCFLAGS=-fno-common}" ;;
      *)       DLCFLAGS="${DLCFLAGS=-fPIC}" ;;
    esac
  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*|gnu*) 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="${DLLDFLAGS=-G}" ;;
    darwin*)      DLLDFLAGS="${DLLDFLAGS=-bundle -flat_namespace -undefined suppress}" ;;
    openbsd*)
      if test $zsh_cv_sys_elf = yes; then
	DLLDFLAGS="${DLLDFLAGS=-shared -fPIC}"
      else
	case "$host_os" in
	  openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
	   DLLDFLAGS="${DLLDFLAGS=-Bshareable}"
	  ;;
	  *)
	    DLLDFLAGS="${DLLDFLAGS=-shared -fPIC}"
	  ;;
	esac
      fi
    ;;
  esac
  case "$host" in
    *-hpux*)  EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-Wl,-E}" ;;
    *-freebsd[3-9]*|*-linux*|gnu*) EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-rdynamic}" ;;
    *openbsd*)
       if test $zsh_cv_sys_elf = yes; then
	 EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-Wl,-E}"
       fi
    ;;
    mips-sni-sysv4)
      #
      # unfortunately, we have different compilers
      # that need different flags
      #
      if test -n "$GCC"; then
        sni_cc_version=GCC
      else
        sni_cc_version=`$CC -V 2>&1 | head -1`
      fi
      case "$sni_cc_version" in
        *CDS*|GCC )
         EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-Wl,-Blargedynsym}"
       ;;
       * )
         EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-LD-Blargedynsym}"
       ;;
      esac
    ;;
  esac
  AC_CACHE_CHECK(if your dlsym() needs a leading underscore,
   zsh_cv_func_dlsym_needs_underscore,
   [echo failed >conftestval && cat >conftest.c <<EOM
fred () { }
EOM
    AC_TRY_COMMAND($CC -c $CFLAGS $CPPFLAGS $DLCFLAGS conftest.c 1>&AC_FD_CC) &&
    AC_TRY_COMMAND($DLLD $LDFLAGS $DLLDFLAGS -o conftest.$DL_EXT conftest.o 1>&AC_FD_CC) &&
    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$dynamic" = xyes; then
  zsh_SHARED_VARIABLE([environ], [char **])
  test "$zsh_cv_shared_environ" = yes || dynamic=no
  if test "$ac_cv_func_tgetent" = yes; then
    zsh_SHARED_FUNCTION([tgetent])
  fi
  if test "$ac_cv_func_tigetstr" = yes; then
    zsh_SHARED_FUNCTION([tigetstr])
  fi
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="$LIBLDFLAGS -s"
  fi
  if test "$host_os" = cygwin; then
    INSTLIB="install.cygwin-lib"
    UNINSTLIB="uninstall.cygwin-lib"
  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_SUBST(INSTLIB)dnl
AC_SUBST(UNINSTLIB)dnl

if test "$host_os" = cygwin; then
  EXTRAZSHOBJS="$EXTRAZSHOBJS zsh.res.o"
fi

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(LINKMODS)dnl
AC_SUBST(MOD_EXPORT)dnl
AC_SUBST(MOD_IMPORT_VARIABLE)dnl
AC_SUBST(MOD_IMPORT_FUNCTION)dnl
AC_SUBST(EXTRAZSHOBJS)dnl

# Generate config.modules.  We look for *.mdd files in first and second
# level subdirectories.  Any existing line not containing 'auto=y' will be
# retained, provided the .mdd file itself was found.
CONFIG_MODULES=./config.modules
echo "creating ${CONFIG_MODULES}"
userlist=" "
if test -f config.modules; then
  userlist="`sed -e '/^#/d' -e '/auto=y/d' -e 's/ .*/ /' -e 's/^name=/ /' \
        ${CONFIG_MODULES}`"
  mv ${CONFIG_MODULES} ${CONFIG_MODULES}.old
fi
(echo "# Edit this file to change the way modules are loaded."
echo "# The format is strict; do not break lines or add extra spaces."
echo "# Run \`make prep' if you change anything here after compiling"
echo "# (there is no need if you change this just after the first time"
echo "# you run \`configure')."
echo "#"
echo "# Values of \`link' are \`static', \`dynamic' or \`no' to compile the"
echo "# module into the shell, link it in at run time, or not use it at all."
echo "# In the final case, no attempt will be made to compile it."
echo "# Use \`static' or \`no' if you do not have dynamic loading."
echo "#"
echo "# Values of \`load' are \`yes' or \`no'; if yes, any builtins etc."
echo "# provided by the module will be autoloaded by the main shell"
echo "# (so long as \`link' is not set to \`no')."
echo "#"
echo "# Values of \`auto' are \`yes' or \`no'. configure sets the value to"
echo "# \`yes'.  If you set it by hand to \`no', the line will be retained"
echo "# when the file is regenerated in future."
echo "#"
echo "# Note that the \`functions' entry extends to the end of the line."
echo "# It should not be quoted; it is used verbatim to find files to install."
echo "#"
echo "# You will need to run \`config.status --recheck' if you add a new"
echo "# module."
echo "#"
echo "# You should not change the values for the pseudo-module zsh/main,"
echo "# which is the main shell (apart from the functions entry)."
for modfile in `cd ${srcdir}; echo */*.mdd */*/*.mdd`; do
  name=
  link=
  load=
  functions=
  . ${srcdir}/$modfile
  if test x$name != x && test x"$link" != x; then
    case "$userlist" in
    *" $name "*) # not autogenerated, keep original
                grep "^name=$name " ${CONFIG_MODULES}.old
		;;
    *) case "$link" in
	  *\ *) eval "link=\`$link\`"
	       ;;
       esac
       case "${load}" in
	y*) load=" load=yes"
	    ;;
	 *) load=" load=no"
	    ;;
       esac
       if test "x$functions" != x; then
         # N.B. no additional quotes
         f=" functions=$functions"
       else
         f=
       fi
       case "$link" in
	 static) echo "name=$name modfile=$modfile link=static auto=yes${load}$f"
	         ;;
	 dynamic) if test $dynamic != no; then
		    echo "name=$name modfile=$modfile link=dynamic\
 auto=yes${load}$f"
		  else
		    echo "name=$name modfile=$modfile link=no\
 auto=yes load=no$f"
		  fi
		  ;;
	 either) if test $dynamic != no; then
		   echo "name=$name modfile=$modfile link=dynamic\
 auto=yes${load}$f"
		 else
		   echo "name=$name modfile=$modfile link=static\
 auto=yes${load}$f"
		 fi
		 ;;
	      *) echo "name=$name modfile=$modfile link=no auto=yes load=no$f"
		 ;;
       esac
       ;;
    esac
  fi
done) >${CONFIG_MODULES}
rm -f ${CONFIG_MODULES}.old

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"
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(VERSION_MK)dnl

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

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}"
fi
echo "See config.modules for installed modules and functions.
"