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authorBart Schaefer <barts@users.sourceforge.net>2005-01-30 00:05:52 +0000
committerBart Schaefer <barts@users.sourceforge.net>2005-01-30 00:05:52 +0000
commit912826aeb6986cfb9d82291f749a7b226fccfee8 (patch)
tree7d6e3b465b8e48d9f46ccc8fdcf8781b54bd4742 /configure.ac
parentafe0e139c8fb5acdbd1d744b9be3d7830302c144 (diff)
downloadzsh-912826aeb6986cfb9d82291f749a7b226fccfee8.tar.gz
zsh-912826aeb6986cfb9d82291f749a7b226fccfee8.tar.xz
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Patches from zsh-4.2.3-dev-1 that affect compilation or C code, excluding
any of those that introduce UTF-8 support.
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac2507
1 files changed, 2507 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 000000000..a516c3d8a
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,2507 @@
+dnl
+dnl  configure.ac: 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_PREREQ(2.50)
+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",
+[Define to be the machine type (microprocessor class or machine model).])
+AC_DEFINE_UNQUOTED(VENDOR,   "$host_vendor",
+[Define to be a string corresponding the vendor of the machine.])
+AC_DEFINE_UNQUOTED(OSTYPE,   "$host_os",
+[Define to be the name of the operating system.])
+
+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, $LIBS)
+
+dnl Do you want to debug zsh?
+ifdef([zsh-debug],[undefine([zsh-debug])])dnl
+AH_TEMPLATE([DEBUG],
+[Define to 1 if you want to debug zsh.])
+AC_ARG_ENABLE(zsh-debug,
+[  --enable-zsh-debug         compile with debug code and debugger symbols],
+[if test x$enableval = xyes; then
+  AC_DEFINE(DEBUG)
+fi])
+
+dnl Do you want zsh memory allocation routines.
+ifdef([zsh-mem],[undefine([zsh-mem])])dnl
+AH_TEMPLATE([ZSH_MEM],
+[Define to 1 if you want to use zsh's own memory allocation routines])
+AC_ARG_ENABLE(zsh-mem,
+[  --enable-zsh-mem           compile with zsh memory allocation routines],
+[if test x$enableval = xyes; then
+  AC_DEFINE(ZSH_MEM)
+fi])
+
+dnl Do you want to debug zsh memory allocation routines.
+ifdef([zsh-mem-debug],[undefine([zsh-mem-debug])])dnl
+AH_TEMPLATE([ZSH_MEM_DEBUG],
+[Define to 1 if you want to debug zsh memory allocation routines.])
+AC_ARG_ENABLE(zsh-mem-debug,
+[  --enable-zsh-mem-debug     debug zsh memory allocation routines],
+[if test x$enableval = xyes; then
+  AC_DEFINE(ZSH_MEM_DEBUG)
+fi])
+
+dnl Do you want to print warnings when errors in memory allocation.
+AH_TEMPLATE([ZSH_MEM_WARNING],
+[Define to 1 if you want to turn on warnings of memory allocation errors])
+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$enableval = xyes; then
+  AC_DEFINE(ZSH_MEM_WARNING)
+fi])
+
+dnl Do you want to turn on error checking for free().
+ifdef([zsh-secure-free],[undefine([zsh-secure-free])])dnl
+AH_TEMPLATE([ZSH_SECURE_FREE],
+[Define to 1 if you want to turn on memory checking for free().])
+AC_ARG_ENABLE(zsh-secure-free,
+[  --enable-zsh-secure-free   turn on error checking for free()],
+[if test x$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
+AH_TEMPLATE([ZSH_HASH_DEBUG],
+[Define to 1 if you want to get debugging information on internal
+ hash tables.  This turns on the `hashinfo' builtin.])
+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="$etcdir/zshenv"
+fi])
+AH_TEMPLATE([GLOBAL_ZSHENV],
+[The global file to source absolutely first whenever zsh is run;
+ if undefined, don't source anything.])
+if test "x$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])
+AH_TEMPLATE([GLOBAL_ZSHRC],
+[The global file to source whenever zsh is run;
+ if undefined, don't source anything])
+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="$etcdir/zprofile"
+fi])
+AH_TEMPLATE([GLOBAL_ZPROFILE],
+[The global file to source whenever zsh is run as a login shell,
+ before zshrc is read; if undefined, don't source anything.])
+if test "x$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])
+AH_TEMPLATE([GLOBAL_ZLOGIN],
+[The global file to source whenever zsh is run as a login shell;
+ if undefined, don't source anything])
+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="$etcdir/zlogout"
+fi])
+AH_TEMPLATE([GLOBAL_ZLOGOUT],
+[The global file to source whenever zsh was run as a login shell.
+ This is sourced right before exiting.  If undefined, don't source
+ anything.])
+if test "x$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="$enableval"], [dynamic=yes])
+
+dnl Do you want to disable restricted on r* commands
+ifdef([restricted-r],[undefine([restricted-r])])dnl
+AH_TEMPLATE([RESTRICTED_R],
+[Undefine this if you don't want to get a restricted shell
+ when zsh is exec'd with basename that starts with r.
+ By default this is defined.])
+AC_ARG_ENABLE(restricted-r,
+[  --disable-restricted-r     turn off r* invocation for restricted shell],
+[if test x$enableval = xyes; then
+  AC_DEFINE(RESTRICTED_R)
+fi],
+AC_DEFINE(RESTRICTED_R)
+)
+
+dnl Do you want to disable use of locale functions
+AH_TEMPLATE([CONFIG_LOCALE],
+[Undefine if you don't want local features.  By default this is defined.])
+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
+AH_TEMPLATE([MAILDIR_SUPPORT],
+[Define for Maildir support])
+AC_ARG_ENABLE(maildir-support,
+[  --enable-maildir-support   enable maildir support in MAIL and MAILPATH],
+[if test x$enableval = xyes; then
+  AC_DEFINE(MAILDIR_SUPPORT)
+fi])
+
+dnl Do you want to set a maximum function depth?
+ifdef([max_function_depth],[undefine([max_function_depth])])dnl
+AH_TEMPLATE([MAX_FUNCTION_DEPTH],
+[Define for function depth limits])
+AC_ARG_ENABLE(max-function-depth,
+[  --enable-max-function-depth=MAX   limit function depth to MAX, default 4096],
+[if test x$enableval = xyes; then
+  AC_DEFINE(MAX_FUNCTION_DEPTH, 4096)
+elif test x$enableval != xno; then
+  AC_DEFINE_UNQUOTED(MAX_FUNCTION_DEPTH, $enableval)
+fi],
+[AC_DEFINE(MAX_FUNCTION_DEPTH, 4096)]
+)
+
+dnl Do you want to look for pcre support?
+AC_ARG_ENABLE(pcre,
+AC_HELP_STRING([--enable-pcre],
+[enable the search for the pcre library (may create run-time library dependencies)]))
+
+dnl Do you want to look for capability support?
+AC_ARG_ENABLE(cap,
+AC_HELP_STRING([--enable-cap],
+[enable the search for POSIX capabilities (may require additional headers to be added by hand)]))
+
+dnl ------------------
+dnl CHECK THE COMPILER
+dnl ------------------
+dnl We want these before the checks, so the checks can modify their values.
+test -z "${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'.
+
+dnl Default preprocessing on Mac OS X produces warnings
+case "$host_os" in
+  darwin*) CPP="$CPP -traditional-cpp" ;;
+esac
+
+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 ."$fp_cv_prog_cc_stdc" = .no; then
+    ansi2knr=yes
+  else
+    ansi2knr=no
+  fi
+fi
+AH_TEMPLATE([PROTOTYPES],
+[Define to 1 if ANSI function prototypes are usable.])
+if test "$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)])
+AH_TEMPLATE([HAVE_UNION_INIT],
+[Define to 1 if the compiler can initialise a union.])
+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)])
+AH_TEMPLATE([BROKEN_SIGNED_TO_UNSIGNED_CASTING],
+[Define to 1 if compiler incorrectly cast signed to unsigned.])
+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)])
+AH_TEMPLATE([HAVE_VARIABLE_LENGTH_ARRAYS],
+[Define to 1 if compiler supports variable-length arrays])
+if test $zsh_cv_c_variable_length_arrays = yes; then
+  AC_DEFINE(HAVE_VARIABLE_LENGTH_ARRAYS)
+fi
+
+dnl ------------------
+dnl CHECK FOR PROGRAMS
+dnl ------------------
+AC_PROG_MAKE_SET            dnl Does make define $MAKE
+AC_PROG_INSTALL             dnl Check for BSD compatible `install'
+AC_PROG_AWK                 dnl Check for mawk,gawk,nawk, then awk.
+AC_PROG_LN                  dnl Check for working ln, for "make install"
+AC_CHECK_PROGS([YODL], [yodl], [: yodl])
+AC_CHECK_PROGS([ANSI2KNR], [ansi2knr], [: ansi2knr])
+
+if test x"$ansi2knr" = xyes && test x"$ANSI2KNR" = x": ansi2knr"; then
+    echo "----------"
+    echo "configure fatal error:"
+    echo "ansi2knr was specified (--enable-ansi2knr) but the program could not be found."
+    echo "Either remove the configure option if it is not required or build the ansi2knr"
+    echo "program before reconfiguring Zsh.  The source code for ansi2knr is also"
+    echo "available in the GPL directory on Zsh distribution sites."
+    exit 1
+fi
+
+dnl ------------------
+dnl CHECK HEADER FILES
+dnl ------------------
+AC_HEADER_DIRENT
+AC_HEADER_STDC
+AC_HEADER_TIME
+AC_HEADER_STAT
+AC_HEADER_SYS_WAIT
+
+oldcflags="$CFLAGS"
+if test x$enable_pcre = xyes; then
+AC_CHECK_PROG([PCRECONF], pcre-config, pcre-config)
+dnl Typically (meaning on this single RedHat 9 box in front of me)
+dnl pcre-config --cflags produces a -I output which needs to go into
+dnl CPPFLAGS else configure's preprocessor tests don't pick it up,
+dnl producing a warning.
+if test "x$ac_cv_prog_PCRECONF" = xpcre-config; then
+  CPPFLAGS="$CPPFLAGS `pcre-config --cflags`"
+fi
+fi
+
+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 stdio.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 pcre.h langinfo.h wchar.h stddef.h \
+		 sys/stropts.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
+AH_TEMPLATE([TIME_H_SELECT_H_CONFLICTS],
+[Define if sys/time.h and sys/select.h cannot be both included.])
+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
+ 
+AH_TEMPLATE([GWINSZ_IN_SYS_IOCTL],
+[Define if your system defines TIOCGWINSZ in sys/ioctl.h.])
+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
+ 
+AH_TEMPLATE([WINSIZE_IN_PTEM],
+[Define if your should include sys/stream.h and sys/ptem.h.])
+AC_CACHE_CHECK(for streams headers including struct winsize,
+ac_cv_winsize_in_ptem,
+[AC_TRY_COMPILE([#include <sys/stream.h>
+#include <sys/ptem.h>],
+[struct winsize wsz],
+ac_cv_winsize_in_ptem=yes,
+ac_cv_winsize_in_ptem=no)])
+if test $ac_cv_winsize_in_ptem = yes; then
+  AC_DEFINE(WINSIZE_IN_PTEM)
+fi
+
+dnl -------------------
+dnl CHECK FOR LIBRARIES
+dnl -------------------
+
+dnl On some systems, modules need to be linked against libc explicitly,
+dnl in case they require objects that exist only in the static version
+dnl and might not be compiled into the zsh executable.
+dnl On ReliantUNIX -lc better be the last library, else funny things
+dnl may happen.
+AC_CHECK_LIB(c, printf, [LIBS="$LIBS -lc"])
+
+AC_CHECK_LIB(m, pow)
+
+dnl Prefer BSD termcap library to SysV curses library, except on certain
+dnl SYSV-derived systems.
+dnl On HPUX, Hcurses is reported to work better than curses.
+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 "$host_os" in
+  hpux10.*|hpux11.*|solaris*)
+      termcap_curses_order="Hcurses curses ncurses termcap" ;;
+  *)             termcap_curses_order="tinfo termcap curses ncurses" ;;
+esac])dnl
+
+AH_TEMPLATE([HAVE_BOOLCODES],
+[Define if you have the termcap boolcodes symbol.])
+AH_TEMPLATE([HAVE_NUMCODES],
+[Define if you have the termcap numcodes symbol.])
+AH_TEMPLATE([HAVE_STRCODES],
+[Define if you have the termcap strcodes symbol.])
+AH_TEMPLATE([HAVE_BOOLNAMES],
+[Define if you have the terminfo boolnames symbol.])
+AH_TEMPLATE([HAVE_NUMNAMES],
+[Define if you have the terminfo numnames symbol.])
+AH_TEMPLATE([HAVE_STRNAMES],
+[Define if you have the terminfo strnames symbol.])
+AH_TEMPLATE([TERM_H_NEEDS_CURSES_H],
+[Define if term.h chokes without curses.h.])
+AC_SEARCH_LIBS(tgetent, [$termcap_curses_order])
+AC_SEARCH_LIBS(tigetflag, [$termcap_curses_order])
+AC_CHECK_HEADERS(curses.h, [],
+[AC_CACHE_CHECK(for Solaris 8 curses.h mistake, ac_cv_header_curses_solaris,
+AC_TRY_COMPILE([#include <curses.h>], [],
+[ac_cv_header_curses_h=yes
+ac_cv_header_curses_solaris=yes],
+ac_cv_header_curses_h=no
+ac_cv_header_curses_solaris=no))
+if test x$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)
+])
+
+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
+
+if test x$enable_cap = xyes; then
+  AC_CHECK_LIB(cap, cap_get_proc)
+fi
+
+AC_CHECK_LIB(socket, socket)
+
+AC_CHECK_LIB(iconv, iconv)
+
+if test x$enable_pcre = xyes; then
+dnl pcre-config should probably be employed here
+AC_SEARCH_LIBS(pcre_compile, pcre)
+fi
+
+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
+
+AH_TEMPLATE([HAVE_OSPEED],
+[Define to 1 if your termcap library has the ospeed variable])
+AH_TEMPLATE([MUST_DEFINE_OSPEED],
+[Define to 1 if you have ospeed, but it is not defined in termcap.h])
+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)])
+
+AH_TEMPLATE([ino_t],
+[Define to `unsigned long' if <sys/types.h> doesn't define.])
+AH_TEMPLATE([LONG_IS_64_BIT],
+[Definitions used when a long is less than eight byte, to try to
+ provide some support for eight byte operations.
+
+ Note that ZSH_64_BIT_TYPE, OFF_T_IS_64_BIT, INO_T_IS_64_BIT do *not* get
+ defined if long is already 64 bits, since in that case no special handling
+ is required.
+
+ Define to 1 if long is 64 bits])
+AH_TEMPLATE([ZSH_64_BIT_TYPE],
+[Define to a 64 bit integer type if there is one, but long is shorter.])
+AH_TEMPLATE([ZSH_64_BIT_UTYPE],
+[Define to an unsigned variant of ZSH_64_BIT_TYPE if that is defined.])
+AH_TEMPLATE([OFF_T_IS_64_BIT],
+[Define to 1 if off_t is 64 bit (for large file support)])
+AH_TEMPLATE([INO_T_IS_64_BIT],
+[Define to 1 if ino_t is 64 bit (for large file support).])
+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)])
+AH_TEMPLATE([sigset_t],
+[Define to `unsigned int' if <sys/types.h> or <signal.h> doesn't define])
+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
+AH_TEMPLATE([USE_LOCAL_H_ERRNO],
+[Define to 1 if h_errno is not defined by the system.])
+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 $zsh_cv_decl_h_errno_use_local = yes; then
+  AC_DEFINE(USE_LOCAL_H_ERRNO)
+fi
+
+dnl ---------------
+dnl CHECK FUNCTIONS
+dnl ---------------
+
+dnl need to integrate this function
+dnl AC_FUNC_STRFTIME
+
+AC_CHECK_FUNCS(strftime difftime gettimeofday \
+	       select poll \
+	       readlink faccessx fchdir ftruncate \
+	       fstat lstat lchown \
+	       fseeko ftello \
+	       mkfifo _mktemp mkstemp \
+	       waitpid wait3 \
+	       sigaction sigblock sighold sigrelse sigsetmask sigprocmask \
+	       killpg setpgid setpgrp tcsetpgrp tcgetattr nice \
+	       gethostname gethostbyname2 getipnodebyname \
+	       inet_aton inet_pton inet_ntop \
+	       getlogin getpwent getpwnam getpwuid getgrgid getgrnam \
+	       initgroups nis_list \
+	       setuid seteuid setreuid setresuid setsid \
+	       memcpy memmove strstr strerror \
+	       getrlimit getrusage \
+	       setlocale \
+	       uname \
+	       signgam \
+	       putenv getenv \
+	       brk sbrk \
+	       pathconf sysconf \
+	       tgetent tigetflag tigetnum tigetstr setupterm \
+	       pcre_compile pcre_study pcre_exec \
+	       nl_langinfo \
+	       erand48 open_memstream \
+	       wctomb iconv \
+	       grantpt unlockpt ptsname \
+	       htons ntohs)
+AC_FUNC_STRCOLL
+
+if test x$enable_cap = xyes; then
+  AC_CHECK_FUNCS(cap_get_proc)
+fi
+
+dnl  Check if tgetent accepts NULL (and will allocate its own termcap buffer)
+dnl  Some termcaps reportedly accept a zero buffer, but then dump core
+dnl  in tgetstr().
+dnl  Under Cygwin test program crashes but exit code is still 0. So,
+dnl  we test for a file that porgram should create
+AH_TEMPLATE([TGETENT_ACCEPTS_NULL],
+[Define to 1 if tgetent() accepts NULL as a buffer.])
+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)])
+AH_TEMPLATE([TGETENT_SUCCESS],
+[Define to what tgetent() returns on success (0 on HP-UX X/Open curses).])
+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)?
+AH_TEMPLATE([POSIX_SIGNALS],
+[Define to 1 if you use POSIX style signal handling.])
+AH_TEMPLATE([BSD_SIGNALS],
+[Define to 1 if you use BSD style signal handling (and can block signals).])
+AH_TEMPLATE([SYSV_SIGNALS],
+[Define to 1 if you use SYS style signal handling (and can block signals).])
+AH_TEMPLATE([NO_SIGNAL_BLOCKING],
+[Define to 1 if you have no signal blocking at all (bummer).])
+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 -e 's/^#line[ 	].*\"\(.*\)\"/\1/p' \
+       -e '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=$zsh_cv_path_signal_h
+AC_SUBST(SIGNAL_H)dnl
+
+dnl Where are error names located?  Needed as input for errnames1.awk
+AC_CACHE_CHECK(where error names are located, zsh_cv_path_errno_h,
+[dnl Look at the output from the preprocessor.
+dnl We should get lines of the form `# 1 "/usr/include/errno.h"'
+dnl The following assumes the real definitions are in a file which
+dnl contains the name `err'; we could relax this if necessary,
+dnl but then you can get a rather long list of files to test.
+dnl The backslash substitution is to persuade cygwin to cough up
+dnl slashes rather than doubled backslashes in the path.
+echo "#include <errno.h>" > nametmp.c
+errfile_list="`$CPP nametmp.c |
+sed -n -e 's/^#line[ 	].*\"\(.*\)\"/\1/p' \
+       -e 's/^#[ 	0-9].*\"\(.*\)\"/\1/p' |
+sed 's/\\\\\\\\/\//g' |
+$AWK '{ if (\$1 ~ \"err\") files[[\$1]] = \$1 }
+  END { for (var in files) print var }'`"
+rm -f nametmp.c
+for ERRNO_H in $errfile_list /dev/null
+do
+  dnl Try to make sure it doesn't get confused by files that don't
+  dnl have real error definitions in.  Count definitions to make sure.
+  nerrs=`test -f $ERRNO_H && \
+  grep '#[ 	]*define[ 	][ 	]*E[0-9A-Z]*[ 	]*[0-9][0-9]*' $ERRNO_H | \
+  wc -l | sed 's/[ 	]//g'`
+  test "x$nerrs" != x && test "$nerrs" -ge 7 && break
+done
+if test $ERRNO_H = "/dev/null"; then
+  AC_MSG_ERROR(ERROR MACROS NOT FOUND:  please report to developers)
+fi
+zsh_cv_path_errno_h=$ERRNO_H
+])
+ERRNO_H=$zsh_cv_path_errno_h
+AC_SUBST(ERRNO_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 ------------------
+AH_TEMPLATE([RLIM_T_IS_QUAD_T],
+[Define to 1 if struct rlimit uses quad_t.])
+AH_TEMPLATE([RLIM_T_IS_LONG_LONG],
+[Define to 1 if struct rlimit uses long long])
+AH_TEMPLATE([RLIM_T_IS_UNSIGNED],
+[Define to 1 if struct rlimit uses unsigned.])
+AH_TEMPLATE([rlim_t],
+[Define to the type used in struct rlimit.])
+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 On some systems the RLIMIT_* don't evaluate to integers at compile time
+dnl (they may be enums).  In this case we are not able to do preprocessor
+dnl comparisons and need our tests to determine what values exist and
+dnl if there are clashing definitions.
+
+zsh_LIMIT_PRESENT(RLIMIT_AIO_MEM)
+zsh_LIMIT_PRESENT(RLIMIT_AIO_OPS)
+zsh_LIMIT_PRESENT(RLIMIT_AS)
+zsh_LIMIT_PRESENT(RLIMIT_LOCKS)
+zsh_LIMIT_PRESENT(RLIMIT_MEMLOCK)
+zsh_LIMIT_PRESENT(RLIMIT_NPROC)
+zsh_LIMIT_PRESENT(RLIMIT_NOFILE)
+zsh_LIMIT_PRESENT(RLIMIT_PTHREAD)
+zsh_LIMIT_PRESENT(RLIMIT_RSS)
+zsh_LIMIT_PRESENT(RLIMIT_SBSIZE)
+zsh_LIMIT_PRESENT(RLIMIT_TCACHE)
+zsh_LIMIT_PRESENT(RLIMIT_VMEM)
+zsh_LIMIT_PRESENT(RLIMIT_SIGPENDING)
+zsh_LIMIT_PRESENT(RLIMIT_MSGQUEUE)
+
+AH_TEMPLATE([RLIMIT_VMEM_IS_RSS],
+[Define to 1 if RLIMIT_VMEM and RLIMIT_RSS both exist and are equal.])
+AC_CACHE_CHECK(if RLIMIT_VMEM and RLIMIT_RSS are the same,
+zsh_cv_rlimit_vmem_is_rss,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#include <sys/resource.h>
+int main()
+{
+int ret = 1;
+#if defined(HAVE_RLIMIT_VMEM) && defined(HAVE_RLIMIT_RSS)
+if (RLIMIT_RSS == RLIMIT_VMEM) ret = 0;
+#endif
+return ret;
+}],
+  zsh_cv_rlimit_vmem_is_rss=yes,
+  zsh_cv_rlimit_vmem_is_rss=no,
+  zsh_cv_rlimit_vmem_is_rss=no)])
+
+if test $zsh_cv_rlimit_vmem_is_rss = yes; then
+  AC_DEFINE(RLIMIT_VMEM_IS_RSS)
+fi
+
+
+AH_TEMPLATE([RLIMIT_VMEM_IS_AS],
+[Define to 1 if RLIMIT_VMEM and RLIMIT_AS both exist and are equal.])
+AC_CACHE_CHECK(if RLIMIT_VMEM and RLIMIT_AS are the same,
+zsh_cv_rlimit_vmem_is_as,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#include <sys/resource.h>
+int main()
+{
+int ret = 1;
+#if defined(HAVE_RLIMIT_VMEM) && defined(HAVE_RLIMIT_AS)
+if (RLIMIT_AS == RLIMIT_VMEM) ret = 0;
+#endif
+return ret;
+}],
+  zsh_cv_rlimit_vmem_is_as=yes,
+  zsh_cv_rlimit_vmem_is_as=no,
+  zsh_cv_rlimit_vmem_is_as=no)])
+
+if test $zsh_cv_rlimit_vmem_is_as = yes; then
+  AC_DEFINE(RLIMIT_VMEM_IS_AS)
+fi
+
+
+dnl --------------------------------------------
+dnl Check for members of struct rusage
+dnl --------------------------------------------
+if test $ac_cv_func_getrusage = yes; then
+  AC_CHECK_MEMBERS([struct rusage.ru_maxrss,
+		    struct rusage.ru_ixrss,
+		    struct rusage.ru_idrss,
+		    struct rusage.ru_isrss,
+		    struct rusage.ru_minflt,
+		    struct rusage.ru_majflt,
+		    struct rusage.ru_nswap,
+		    struct rusage.ru_inblock,
+		    struct rusage.ru_oublock,
+		    struct rusage.ru_msgsnd,
+		    struct rusage.ru_msgrcv,
+		    struct rusage.ru_nsignals,
+		    struct rusage.ru_nvcsw,
+		    struct rusage.ru_nivcsw],,,
+[#include <sys/types.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#include <sys/resource.h>])
+fi
+
+
+dnl --------------------------------------------
+dnl CHECK FOR DEFAULT PATH (used for command -p)
+dnl --------------------------------------------
+AC_CACHE_VAL(zsh_cv_cs_path,
+[if getconf _CS_PATH >/dev/null 2>&1; then
+  zsh_cv_cs_path=`getconf _CS_PATH`
+elif getconf CS_PATH >/dev/null 2>&1; then
+  zsh_cv_cs_path=`getconf CS_PATH`
+else
+  zsh_cv_cs_path="/bin:/usr/bin"
+fi])
+AC_DEFINE_UNQUOTED(DEFAULT_PATH, "$zsh_cv_cs_path",
+[The default path; used when running commands with command -p])
+
+
+dnl ----------------------------
+dnl CHECK FOR /dev/fd FILESYSTEM
+dnl ----------------------------
+AH_TEMPLATE([PATH_DEV_FD],
+[Define to the path of the /dev/fd filesystem.])
+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])
+AH_TEMPLATE([HAVE_SUPERROOT],
+[Define to 1 if you have RFS superroot directory.])
+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])
+AH_TEMPLATE([USE_GETCWD],
+[Define to 1 if you need to use the native getcwd.])
+if test $zsh_cv_use_getcwd = yes; then
+  AC_DEFINE(USE_GETCWD)
+fi
+
+dnl -------------
+dnl CHECK FOR NIS
+dnl -------------
+AH_TEMPLATE([HAVE_NIS],
+[Define to 1 if you have NIS.])
+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 -----------------
+AH_TEMPLATE([HAVE_NIS_PLUS],
+[Define to 1 if you have NISPLUS.])
+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)])
+AH_TEMPLATE([HAVE_BRK_PROTO],
+[Define to 1 if there is a prototype defined for brk() on your system.])
+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)])
+AH_TEMPLATE([HAVE_SBRK_PROTO],
+[Define to 1 if there is a prototype defined for sbrk() on your system.])
+if test $zsh_cv_header_unistd_h_sbrk_proto = yes; then
+  AC_DEFINE(HAVE_SBRK_PROTO)
+fi
+
+dnl ----------------------------------
+dnl ioctl and mknod prototypes for OSF
+dnl ----------------------------------
+
+AH_TEMPLATE([HAVE_IOCTL_PROTO],
+[Define to 1 if there is a prototype defined for ioctl() on your system])
+AH_TEMPLATE([HAVE_MKNOD_PROTO],
+[Define to 1 if there is a prototype defined for mknod() on your system])
+if test "$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 -------------------
+AH_TEMPLATE([SELECT_IN_SYS_SOCKET_H],
+[Define to 1 if select() is defined in <sys/socket.h>, ie BeOS R4.51])
+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 $zsh_cv_header_socket_h_select_proto = yes; then
+    AC_DEFINE(SELECT_IN_SYS_SOCKET_H)
+  fi
+fi
+
+dnl -----------
+dnl named FIFOs
+dnl -----------
+AC_CACHE_CHECK(if named FIFOs work,
+zsh_cv_sys_fifo,
+[if test "$host_os" = cygwin; then
+zsh_cv_sys_fifo=no
+else
+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)
+fi])
+AH_TEMPLATE([HAVE_FIFOS],
+[Define to 1 if system has working FIFOs.])
+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])
+AH_TEMPLATE([SH_USE_BSD_ECHO],
+[Define to 1 if /bin/sh does not interpret \ escape sequences.])
+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)])
+AH_TEMPLATE([HAVE_LINK],
+[Define to 1 if system has working link().])
+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)])
+AH_TEMPLATE([BROKEN_KILL_ESRCH],
+[Define to 1 if kill(pid, 0) doesn't return ESRCH, ie BeOS R4.51.])
+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 -----------
+AH_TEMPLATE([BROKEN_POSIX_SIGSUSPEND],
+Define to 1 if sigsuspend() is broken, ie BeOS R4.51.])
+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 $zsh_cv_sys_sigsuspend = no; then
+      AC_DEFINE(BROKEN_POSIX_SIGSUSPEND)
+    fi
+fi
+
+dnl -----------
+dnl if found tcsetpgrp, test to see if it actually works
+dnl for instance, BeOS R4.51 does not support it yet
+dnl -----------
+AH_TEMPLATE([BROKEN_TCSETPGRP],
+[Define to 1 if tcsetpgrp() doesn't work, ie BeOS R4.51.])
+AC_ARG_WITH(tcsetpgrp,
+[  --with-tcsetpgrp        assumes that tcsetpgrp() exists and works correctly],[
+case "x$withval" in
+    xyes) zsh_working_tcsetpgrp=yes;;
+    xno)  zsh_working_tcsetpgrp=no;;
+    *)    AC_ERROR([please use --with-tcsetpgrp=yes or --with-tcsetpgrp=no]);;
+esac],[zsh_working_tcsetpgrp=check])
+if test "x$ac_cv_func_tcsetpgrp" = xyes; then
+case "x$zsh_working_tcsetpgrp" in
+  xcheck)
+    trap "" SIGTTOU > /dev/null 2>&1 || :
+    AC_CACHE_CHECK(if tcsetpgrp() actually works,
+    zsh_cv_sys_tcsetpgrp,
+    [AC_TRY_RUN([
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+main() {
+    int fd;
+    int ret;
+    fd=open("/dev/tty", O_RDWR);
+    if (fd < 0) exit(2);
+    ret=tcsetpgrp(fd, tcgetpgrp(fd));
+    if (ret < 0) exit(1);
+    exit(0);
+}
+],
+      zsh_cv_sys_tcsetpgrp=yes, [
+case $? in
+    1) zsh_cv_sys_tcsetpgrp=no;;
+    2) zsh_cv_sys_tcsetpgrp=notty;;
+    *) zsh_cv_sys_tcsetpgrp=error;;
+esac
+      ], zsh_cv_sys_tcsetpgrp=yes)])
+    case "x$zsh_cv_sys_tcsetpgrp" in
+      xno)    AC_DEFINE(BROKEN_TCSETPGRP);;
+      xyes)   :;;
+      xnotty) AC_MSG_ERROR([no controlling tty
+Try running configure with --with-tcsetpgrp or --without-tcsetpgrp]);;
+      *)      AC_MSG_ERROR([unexpected return status]);;
+    esac
+    trap - SIGTTOU > /dev/null 2>&1 || :
+    ;;
+  xyes) :;;
+  xno)  AC_DEFINE(BROKEN_TCSETPGRP);;
+  *)    AC_MSG_ERROR([unexpected value zsh_working_tcsetpgrp=$zsh_working_tcsetpgrp]);;
+esac
+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 -----------
+AH_TEMPLATE([GETPWNAM_FAKED],
+[Define to 1 if getpwnam() is faked, ie BeOS R4.51.])
+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 Check for pty multiplexer for use in pty module.
+dnl We need to open it read/write, so make sure it is writeable.
+dnl Yet another test which won't work when cross-compiling.
+dnl ---------------
+AC_CACHE_CHECK(if your system has /dev/ptmx,
+ac_cv_have_dev_ptmx,
+[if test -w /dev/ptmx; then
+  ac_cv_have_dev_ptmx=yes
+else
+  ac_cv_have_dev_ptmx=no
+fi])
+
+dnl --------
+dnl Check if the ptmx functions are usable.
+dnl We need to be able to find the prototypes, which may
+dnl require non-POSIX source definitions.  So test to see
+dnl if ptsname is correctly recognised as returning a char *.
+dnl We do this by making sure a program where ptsname() is declared
+dnl as returning int does *not* compile.
+dnl On Linux we need the XOPEN extensions.  The easiest way to get
+dnl these is by defining _GNU_SOURCE.
+dnl -------
+AH_TEMPLATE([USE_DEV_PTMX],
+[Define to 1 if all the kit for using /dev/ptmx for ptys is available.])
+if test $ac_cv_have_dev_ptmx = yes && \
+   test $ac_cv_func_grantpt = yes && \
+   test $ac_cv_func_unlockpt = yes && \
+   test $ac_cv_func_ptsname = yes; then
+   AC_CACHE_CHECK([if /dev/ptmx is usable],
+   ac_cv_use_dev_ptmx,
+   [AC_TRY_COMPILE([#ifdef __linux
+#define _GNU_SOURCE 1
+#endif
+#include <stdlib.h>
+int ptsname();], ,
+   ac_cv_use_dev_ptmx=no,
+   ac_cv_use_dev_ptmx=yes)])
+   if test $ac_cv_use_dev_ptmx = yes; then
+     AC_DEFINE(USE_DEV_PTMX)
+   fi
+fi
+
+
+dnl ---------------
+dnl dynamic loading
+dnl ---------------
+AH_TEMPLATE([HPUXDYNAMIC],
+[Define to 1 if you want to use dynamically loaded modules on HPUX 10.])
+L=N
+INSTLIB="install.bin-\$(L)"
+UNINSTLIB="uninstall.bin-\$(L)"
+LINKMODS=NOLINKMODS
+MOD_EXPORT=
+MOD_IMPORT_VARIABLE=
+MOD_IMPORT_FUNCTION=
+aixdynamic=no
+hpuxdynamic=no
+if test "$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 "$GCC" && LDARG=-Wl,
+
+AH_TEMPLATE([DLSYM_NEEDS_UNDERSCORE],
+[Define to 1 if an underscore has to be prepended to dlsym() argument.])
+AH_TEMPLATE([DYNAMIC_NAME_CLASH_OK],
+[Define to 1 if multiple modules defining the same symbol are OK.])
+if test "x$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="${DLLD=dllwrap}"
+  DLLD="${DLLD=$CC}"
+##DLLDFLAGS="${DLLDFLAGS=--export-all-symbols}"
+  DLLDFLAGS=${DLLDFLAGS=-shared -Wl,--export-all-symbols}
+  zsh_cv_func_dlsym_needs_underscore=no
+  DLLDFLAGS=${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
+      hpux*)   DLLDFLAGS="${DLLDFLAGS=-shared}" ;;
+      darwin*) DLCFLAGS="${DLCFLAGS=-fno-common}" ;;
+      *)       DLCFLAGS="${DLCFLAGS=-fPIC}" ;;
+    esac
+  else
+    case "$host_os" in
+      hpux*)
+        DLCFLAGS="${DLCFLAGS=+z}"
+        DLLDFLAGS="${DLLDFLAGS=-b}"
+      ;;
+      sunos*)                DLCFLAGS="${DLCFLAGS=-pic}" ;;
+      solaris*|sysv4*|esix*) DLCFLAGS="${DLCFLAGS=-KPIC}" ;;
+    esac
+  fi
+  case "$host_os" in
+    freebsd*|linux*|irix*|osf*|gnu*) DLLDFLAGS="${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
+
+AH_TEMPLATE([DYNAMIC],
+[Define to 1 if you want to use dynamically loaded modules.])
+if test "x$dynamic" = xyes; then
+  D=D
+  AC_DEFINE(DYNAMIC)dnl
+else
+  D=N
+fi
+
+AH_TEMPLATE([AIXDYNAMIC],
+[Define to 1 if you want to use dynamically loaded modules on AIX.])
+if test "x$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",
+[The extension used for dynamically loaded modules.])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
+cat <<EOM > ${CONFIG_MODULES}.sh
+srcdir="$srcdir"
+dynamic="$dynamic"
+CONFIG_MODULES="${CONFIG_MODULES}"
+EOM
+cat <<\EOM >> ${CONFIG_MODULES}.sh
+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
+else
+  # Save testing for existence each time.
+  echo > ${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)."
+EOM
+dnl The autoconf macros are only available in configure, not
+dnl config.status, and only change when configure is rerun.
+dnl So we need to run the autoconf tests here and store the results.
+dnl We then generate config.modules, preserving any user-generated
+dnl information, from config.status.
+for modfile in `cd ${srcdir}; echo */*.mdd */*/*.mdd`; do
+  name=
+  link=
+  load=
+  functions=
+  result=
+  . ${srcdir}/$modfile
+  if test x$name != x && test x"$link" != x; then
+    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) result="name=$name modfile=$modfile link=static auto=yes${load}$f"
+	      ;;
+      dynamic) if test $dynamic != no; then
+		  result="name=$name modfile=$modfile link=dynamic\
+ auto=yes${load}$f"
+	       else
+		 result="name=$name modfile=$modfile link=no\
+ auto=yes load=no$f"
+	       fi
+	       ;;
+      either) if test $dynamic != no; then
+		result="name=$name modfile=$modfile link=dynamic\
+ auto=yes${load}$f"
+	      else
+		result="name=$name modfile=$modfile link=static\
+ auto=yes${load}$f"
+	      fi
+	      ;;
+       *) result="name=$name modfile=$modfile link=no auto=yes load=no$f"
+	  ;;
+    esac
+dnl $result is the default output for config.modules.  We generate
+dnl code to check if we should use this.
+cat <<EOM >> ${CONFIG_MODULES}.sh
+case "\$userlist" in
+  *" $name "*) grep "^name=$name " \${CONFIG_MODULES}.old;;
+  *) echo "$result";;
+esac
+EOM
+  fi
+done
+cat <<\EOM >> ${CONFIG_MODULES}.sh
+) >${CONFIG_MODULES}
+rm -f ${CONFIG_MODULES}.old
+EOM
+
+dnl AH_TOP replaces the code which used to appear at the top
+dnl of acconfig.h.
+AH_TOP([/***** begin user configuration section *****/
+
+/* Define this to be the location of your password file */
+#define PASSWD_FILE "/etc/passwd"
+
+/* Define this to be the name of your NIS/YP password *
+ * map (if applicable)                                */
+#define PASSWD_MAP "passwd.byname"
+
+/* Define to 1 if you want user names to be cached */
+#define CACHE_USERNAMES 1
+
+/* Define to 1 if system supports job control */
+#define JOB_CONTROL 1
+
+/* Define this if you use "suspended" instead of "stopped" */
+#define USE_SUSPENDED 1
+ 
+/* The default history buffer size in lines */
+#define DEFAULT_HISTSIZE 30
+
+/* The default editor for the fc builtin */
+#define DEFAULT_FCEDIT "vi"
+
+/* The default prefix for temporary files */
+#define DEFAULT_TMPPREFIX "/tmp/zsh"
+
+/***** end of user configuration section            *****/
+/***** shouldn't have to change anything below here *****/
+
+])
+
+CLEAN_MK="${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_CONFIG_FILES(Config/defs.mk Makefile Doc/Makefile Etc/Makefile \
+Src/Makefile Test/Makefile)
+AC_CONFIG_COMMANDS([config.modules], [. ./config.modules.sh])
+AC_CONFIG_COMMANDS([stamp-h], [echo >stamp-h])
+
+AC_OUTPUT
+
+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.
+"
+
+