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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 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 Pathnames for global zsh scripts
undefine([zshenv])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,
[  --enable-dynamic           allow dynamically loaded binary modules],
[dynamic="$enableval"], [dynamic=no])

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 ------------------
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 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 -pedantic -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 "$auto_ldflags"; then
  if test "${enable_zsh_debug}" = yes; then
    LDFLAGS=-g
  else
    LDFLAGS=-s
  fi
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-lenth arrays,
zsh_cv_c_variable_length_arrays,
[AC_TRY_COMPILE([int foo();], [int i[foo()];],
  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_CHECK_PROGS([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)
if test $dynamic = yes; then
  AC_CHECK_HEADERS(dlfcn.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)

dnl Prefer BSD termcap library to SysV curses library, except on certain
dnl versions of AIX and HP-UX.
if test `echo $host_os | sed 's/^.*\(aix\)[[1-9]]\.[[0-9]].*$/\1/'` = aix ||
    test `echo $host_os | sed 's/^.*\(hpux\)10\..*$/\1/'` = hpux; then
  termcap_curses_order="curses ncurses termcap"
else
  termcap_curses_order="termcap curses ncurses"
fi

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)

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)
AC_CACHE_CHECK(if tgetent accepts NULL,
zsh_cv_func_tgetent_accepts_null,
[AC_TRY_RUN([main(){int i = tgetent((char*)0,"vt100");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_TYPE_MODE_T
AC_TYPE_UID_T
AC_TYPE_SIZE_T

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 ---------------
dnl CHECK FUNCTIONS
dnl ---------------
AC_FUNC_GETPGRP
AC_FUNC_STRCOLL

dnl need to integrate this function
dnl AC_FUNC_STRFTIME

AC_CHECK_FUNCS(memcpy memmove \
              strftime waitpid select 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)
if test $dynamic = yes; then
  AC_CHECK_FUNCS(dlopen dlerror dlsym dlclose)
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,
[for SIGNAL_H in /usr/include/bsd/sys/signal.h  dnl Next
                 /usr/include/asm/signum.h      dnl alpha-Linux
                 /usr/include/asm/signal.h      dnl Linux 1.3.0 and above
                 /usr/include/linux/signal.h    dnl Linux up to 1.2.11
                 /usr/include/sys/signal.h      dnl Almost everybody else
                 /dev/null;                     dnl Just in case we fall through
do
  test -f $SIGNAL_H && \
  grep '#[ 	]*define[ 	][ 	]*SIG[0-9A-Z]*[ 	]*[0-9][0-9]*' $SIGNAL_H > /dev/null && \
  break
done
zsh_cv_path_signal_h=$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/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 $ac_cv_func_getrlimit = yes; then
  echo "RLIMIT MACROS NOT FOUND:  please report to developers"
fi])
RLIMITS_INC_H=$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 quad_t,
zsh_cv_rlim_t_is_quad_t,
[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_quad_t=yes,
zsh_cv_rlim_t_is_quad_t=no,
zsh_cv_rlim_t_is_quad_t=yes)])
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_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 -------------
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 TYPEAHEAD KLUDGE
dnl ----------------
dnl Some systems clobber typeahead when you go from canonical input
dnl processing to non-canonical, so we need a FIONREAD ioctl.
dnl I don't know how to check this with configure, so I am using the
dnl system names directly.
dnl The doubled square brackets are necessary because autoconf uses m4.
AC_CACHE_CHECK(if typeahead needs FIONREAD, zsh_cv_sys_clobbers_typeahead,
[case x-$host_vendor-$host_os in
    x-*-ultrix* | x-*-dgux* | x-sni-sysv4*)
	zsh_cv_sys_clobbers_typeahead=yes;;
    *)
	zsh_cv_sys_clobbers_typeahead=no;;
esac])
if test $zsh_cv_sys_clobbers_typeahead = yes; then
  AC_DEFINE(CLOBBERS_TYPEAHEAD)
fi

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 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 dynamic loading
dnl ---------------
L=N
if test "$ac_cv_func_dlopen" != yes; then
  dynamic=no
elif test "$ac_cv_func_dlsym" != yes; then
  dynamic=no
elif test "$ac_cv_func_dlerror" != yes; then
  dynamic=no
fi
if test "x$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=$CC}"
  else
    DLLD="${DLLD=ld}"
  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}" ;;
    linux*|irix*|osf*) DLLDFLAGS="${DLLDFLAGS=-shared}" ;;
    solaris*)     DLLDFLAGS="${DLLDFLAGS=-G}" ;;
    sunos*)       DLLDFLAGS="${DLLDFLAGS=-assert nodefinitions}" ;;
    sysv4*|esix*) DLLDFLAGS="${DLLDFLAGS=-G $ldflags}" ;;
    netbsd*)      DLLDFLAGS="${DLLDFLAGS=-x -shared --whole-archive}" ;;
  esac
  case "$host_os" in
    hpux*)  EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-Wl,-E}" ;;
    linux*) EXTRA_LDFLAGS="${EXTRA_LDFLAGS=-rdynamic}" ;;
  esac
  AC_CACHE_CHECK(if your dlsym() needs a leading underscore,
   zsh_cv_func_dlsym_needs_underscore,
   [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 HAVE_DLFCN_H
#include <dlfcn.h>
#else
#include <sys/types.h>
#include <nlist.h>
#include <link.h>
#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.$DL_EXT", RTLD_LAZY) ;
    if (handle == NULL) {
        fprintf (f, "dlopen failed") ;
            exit(1);
    }
    symbol = dlsym(handle, "fred") ;
    if (symbol == NULL) {
                /* try putting a leading underscore */
        symbol = dlsym(handle, "_fred") ;
        if (symbol == NULL) {
            fprintf (f, "dlsym failed") ;
                exit(1);
                }
        fprintf (f, "yes") ;
    }
    else
        fprintf (f, "no") ;
    exit(0);
}], zsh_cv_func_dlsym_needs_underscore=`cat conftestval`,
    zsh_cv_func_dlsym_needs_underscore=failed
    dynamic=no,
    zsh_cv_func_dlsym_needs_underscore=no)])
  if test "$zsh_cv_func_dlsym_needs_underscore" = yes; then
    AC_DEFINE(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

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(EXTRA_LDFLAGS)dnl
AC_SUBST(L)dnl
AC_SUBST(RTLD_GLOBAL_OK)dnl

real_no_create=$no_create
no_create=yes
AC_OUTPUT(Makefile Doc/Makefile Etc/Makefile Src/Makefile, \
[test -z "$CONFIG_HEADERS" || echo > stamp-h])

dnl The standard config.status is missing some essential features.
dnl So add them now.
[(
  echo '1,$s@^#( *ac_file_inputs=#).*$@#1`echo $ac_file_in | sed -e "s%^%:%" -e "s%:##([^!]##)% $ac_given_srcdir/##1%g" -e "s%:!% %"`@'
  echo '/ac_sed_cmds=cat/+a'
  echo ''
  echo 'ac_sed_inc_cmds="'
  quote_sed='s,\.,#.,g'
  for name in `echo '' ${srcdir}/Config/*.mk | sed "s, ${srcdir}/Config/, ,g"`; do
    echo '/^@@'`echo $name | sed -e "$quote_sed"`'@@#$/{r $ac_given_srcdir/Config/'$name
    echo 'd;}'
  done
  echo '"'
  echo '.'
  echo '1,$s@^#( *#)#(sed -e "#$ac_comsub *#)$@#1sed -e "$ac_sed_inc_cmds" $ac_file_inputs | #2@'
  echo '1,$s@^#( *"#)  *$ac_file_inputs |@#1 |@'
  echo 'w'
  echo 'q'
) | tr '#' '\\' | ed $CONFIG_STATUS >/dev/null 2>/dev/null]

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}"

echo "
zsh configuration
-----------------
zsh version               : ${VERSION}
host operating system     : ${host_cpu}-${host_vendor}-${host_os}
source code location      : ${srcdir}
compiler                  : ${CC}
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}
binary install path       : ${zshbin2}
man page install path     : ${zshman}
info install path         : ${zshinfo}
"