repo: rxvt-unicode-sixel
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commit f03f3a570e5a2b4be1a7ab6068b470118b27205f
Author: Emanuele Giaquinta 
Date:   Tue Jan 17 12:21:41 2006 +0000

    *** empty log message ***

diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000000000000000000000000000000000000..b2940b838c453c06f31ebeceeabb501392c91959
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,1562 @@
+dnl# -*- sh -*-
+dnl#
+dnl# Process this file with autoconf to produce a configure script.
+dnl#
+
+AC_INIT
+AC_PREREQ(2.50)
+AC_CONFIG_SRCDIR([src/feature.h])
+AC_CONFIG_HEADER(config.h:config.h.in)
+
+AC_CANONICAL_HOST
+
+dnl RXVT version
+changequote(, )dnl
+VERSION=`sed -n -e 's/^.*[ \t]VERSION.*"\(.*\)"$/\1/p' ${srcdir}/src/version.h`
+DATE=`sed -n -e 's/^.*[ \t]DATE.*"\(.*\)"$/\1/p' ${srcdir}/src/version.h`
+dnl LIBVERSION=`sed -n -e 's/^.*[ \t]LIBVERSION.*"\(.*\)"$/\1/p' ${srcdir}/src/version.h`
+changequote([, ])dnl
+AC_SUBST(VERSION)dnl 
+AC_SUBST(DATE)dnl 
+AC_SUBST(LSMDATE)dnl 
+AC_SUBST(LIBVERSION)dnl 
+echo ""
+echo "configuring for rxvt $VERSION"
+echo ""
+
+orig_CXXFLAGS="$CXXFLAGS"
+
+dnl# Checks for programs.
+dnl AC_MAKE_SET
+
+AC_PROG_CC
+AC_PROG_CXX
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_AWK
+
+AC_LANG(C)
+
+dnl# --------------------------------------------------------------------------
+dnl# Supply default CFLAGS, if not specified by `CFLAGS=flags ./configure'
+dnl#
+if test -z "$orig_CXXFLAGS"; then
+  if test x$GCC = xyes && test "x$GXX" = xyes; then
+    CXXFLAGS="-g -O3"
+  else
+    CXXFLAGS="-O"
+  fi
+  CFLAGS="$CXXFLAGS"
+fi
+
+LINKER="$CXX"
+if test x$GCC = xyes && test x$GXX = xyes; then
+   AC_CHECK_LIB(supc++, main, [
+      LINKER="$CC"
+      LIBS="$LIBS -lsupc++"
+   ])
+fi
+AC_SUBST(LINKER,[$LINKER])
+
+AC_DEFINE(_GNU_SOURCE, 1, Use all glibc features.)
+
+case $host in
+   *-*-solaris* )
+      AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1, Needed to get declarations for msg_control and msg_controllen on Solaris)
+      AC_DEFINE(_XOPEN_SOURCE,          2, Needed to get declarations for msg_control and msg_controllen on Solaris)
+      AC_DEFINE(__EXTENSIONS__,         1, Needed to get declarations for msg_control and msg_controllen on Solaris)
+      ;;
+esac
+
+dnl if test x$GXX = xyes; then
+dnl    CXXFLAGS="$CXXFLAGS" dnl I once had -fno-exceptions, but I am using them now...
+dnl fi
+
+AC_LANG(C++)
+
+dnl# system hacks
+AC_AIX
+AC_ISC_POSIX
+
+dnl# FreeBSD needs to link libxpg4
+AC_CHECK_FUNC(setlocale,     [], [AC_CHECK_LIB(xpg4,   setlocale,     [LIBS="$LIBS -lxpg4"])])
+
+dnl# solaris needs to link libnsl and socket
+AC_CHECK_FUNC(gethostbyname, [], [AC_CHECK_LIB(nsl,    gethostbyname, [LIBS="$LIBS -lnsl"])])
+AC_CHECK_FUNC(socket,        [], [AC_CHECK_LIB(socket, socket,        [LIBS="$LIBS -lsocket"])])
+
+dnl# more solaris
+AC_CHECK_FUNC(sched_yield,   [], [AC_CHECK_LIB(rt,     sched_yield,   [LIBS="$LIBS -lrt"])])
+
+dnl# sched_yield to improve terminal efficiency
+AC_MSG_CHECKING(for sched_yield support)
+AC_TRY_LINK([#include ],[sched_yield ()],
+            [AC_MSG_RESULT(yes)
+             AC_DEFINE(HAVE_SCHED_YIELD, 1, Define if you have sched-h and sched_yield)],
+            [AC_MSG_RESULT(no)])
+
+dnl AC_ENABLE_SHARED(no)dnl#	libtool
+dnl AC_ENABLE_STATIC(yes)dnl#	libtool
+dnl AC_PROG_LIBTOOL()dnl#		libtool
+
+MALLOC_TYPE=S
+
+support_frills=yes
+support_inheritpixmap=yes
+support_tinting=yes
+support_fading=yes
+support_keepscrolling=yes
+support_selectionscrolling=yes
+support_mousewheel=yes
+support_mouseslipwheel=yes
+support_utmp=yes
+support_wtmp=yes
+support_lastlog=yes
+support_text_blink=yes
+support_pointer_blank=yes
+support_scroll_rxvt=yes
+support_scroll_next=yes
+support_scroll_xterm=yes
+support_scroll_plain=yes
+support_xim=yes
+support_xpm=yes
+support_xft=yes
+support_unicode3=no
+support_combining=yes
+support_8bitctrls=no
+support_iso14755=yes
+support_styles=yes
+support_perl=yes
+codesets=all
+
+dnl# --------------------------------------------------------------------------
+dnl# CHECKING COMMAND LINE OPTIONS
+dnl# --------------------------------------------------------------------------
+
+if test "x$enable_shared" = xyes; then
+    AC_DEFINE(LIBRXVT, 1, Build shared library version - specify via configure only)
+    INSTALL_LIBRXVT=yes
+fi
+AC_SUBST(INSTALL_LIBRXVT)
+
+AC_ARG_ENABLE(everything,
+  [  --enable-everything     enable standard non-multichoice features
+                     NOTE: this option is order dependent
+                     NOTE: automatically enabled with --enable-shared],
+  [
+    if test x$enableval = xno; then
+       support_24bit=no
+       support_frills=no
+       support_inheritpixmap=no
+       support_tinting=no
+       support_fading=no
+       support_keepscrolling=no
+       support_selectionscrolling=no
+       support_lastlog=no
+       support_mousewheel=no
+       support_mouseslipwheel=no
+       support_text_blink=no
+       support_pointer_blank=no
+       support_scroll_rxvt=no
+       support_scroll_next=no
+       support_scroll_xterm=no
+       support_scroll_plain=no
+       support_utmp=no
+       support_wtmp=no
+       support_xim=no
+       support_xpm=no
+       support_xft=no
+       support_unicode3=no
+       support_combining=no
+       support_8bitctrls=no
+       support_iso14755=no
+       support_styles=no
+       support_perl=no
+       codesets=
+    fi
+    if test x$enableval = xyes; then
+       support_24bit=yes
+       support_frills=yes
+       support_inheritpixmap=yes
+       support_tinting=yes
+       support_fading=yes
+       support_keepscrolling=yes
+       support_selectionscrolling=yes
+       support_lastlog=yes
+       support_mousewheel=yes
+       support_mouseslipwheel=yes
+       support_text_blink=yes
+       support_pointer_blank=yes
+       support_scroll_rxvt=yes
+       support_scroll_next=yes
+       support_scroll_xterm=yes
+       support_scroll_plain=yes
+       support_utmp=yes
+       support_wtmp=yes
+       support_xim=yes
+       support_xpm=yes
+       support_xft=yes
+       support_unicode3=yes
+       support_combining=yes
+       #support_8bitctrls=yes
+       support_iso14755=yes
+       support_styles=yes
+       support_perl=yes
+       codesets=all
+    fi
+  ])
+
+AC_ARG_ENABLE(unicode3,
+  [  --enable-unicode3       use 21 instead of 16 bits to represent unicode characters],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_unicode3=$enableval
+  fi])
+
+AC_ARG_ENABLE(combining,
+  [  --enable-combining      enable composition of base and combining characters],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_combining=$enableval
+  fi])
+
+AC_ARG_ENABLE(xft,
+  [  --enable-xft            enable xft support on systems that have it],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_xft=$enableval
+  fi])
+
+AC_ARG_ENABLE(font-styles,
+  [  --enable-font-styles    enable bold and italic support],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_styles=$enableval
+  fi])
+
+AC_ARG_ENABLE(utmp,
+  [  --enable-utmp           enable utmp (utmpx) support],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_utmp=$enableval
+  fi])
+
+AC_ARG_ENABLE(wtmp,
+  [  --enable-wtmp           enable wtmp (wtmpx) support (requires --enable-utmp)],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_wtmp=$enableval
+  fi])
+
+AC_ARG_ENABLE(lastlog,
+  [  --enable-lastlog        enable lastlog support (requires --enable-utmp)],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_lastlog=$enableval
+  fi])
+
+AC_ARG_ENABLE(xpm-background,
+  [  --enable-xpm-background enable XPM background pixmaps],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_xpm=$enableval
+  fi])
+
+AC_ARG_ENABLE(transparency,
+  [  --enable-transparency   enable transparent backgrounds],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_inheritpixmap=$enableval
+  fi])
+
+AC_ARG_ENABLE(tinting,
+  [  --enable-tinting        enable tinting of transparent bg],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_tinting=$enableval
+  fi])
+
+AC_ARG_ENABLE(fading,
+  [  --enable-fading         enable colors fading when off focus],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_fading=$enableval
+  fi])
+
+AC_ARG_ENABLE(rxvt-scroll,
+  [  --enable-rxvt-scroll    enable rxvt style scrollbar],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_scroll_rxvt=$enableval
+  fi])
+
+AC_ARG_ENABLE(next-scroll,
+  [  --enable-next-scroll    enable NeXT style scrollbar],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_scroll_next=$enableval
+  fi])
+
+AC_ARG_ENABLE(xterm-scroll,
+  [  --enable-xterm-scroll   enable Xterm style scrollbar],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_scroll_xterm=$enableval
+  fi])
+
+AC_ARG_ENABLE(perl,
+  [  --enable-perl           enable embedded perl interpreter],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_perl=$enableval
+  fi])
+
+AC_ARG_ENABLE(plain-scroll,
+  [  --enable-plain-scroll   enable plain style scrollbar],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_scroll_plain=$enableval
+  fi])
+
+dnl AC_ARG_ENABLE(half-shadow,
+dnl   [  --enable-half-shadow    use half width/height shadow on rxvt scrollbar],
+dnl   [if test x$enableval = xyes; then
+dnl     AC_DEFINE(HALFSHADOW, 1, Define if you want the depth of scrollbars and menus to be less)
+dnl   fi])
+
+AC_ARG_WITH(codesets,
+  [  --with-codesets=NAME,.. compile in additional codesets (jp,jp_ext,kr,zh,zh_ext,all)],
+  [codesets="$withval"])
+
+AC_ARG_ENABLE(xim,
+  [  --enable-xim            XIM (X Input Method) protocol support],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_xim=$enableval
+  fi])
+
+AC_ARG_ENABLE(ttygid,
+  [  --enable-ttygid         enable tty setting to group named "tty"],
+  [if test x$enableval = xyes; then
+    AC_DEFINE(TTY_GID_SUPPORT, 1, Define to change gid of ttys to group tty)
+  fi])
+
+AC_ARG_ENABLE(backspace-key,
+  [  --disable-backspace-key disable handling of the backspace key],
+  [if test x$enableval = xno; then
+    AC_DEFINE(NO_BACKSPACE_KEY, 1, Define if you don't want support for the backspace key)
+  fi])
+
+AC_ARG_ENABLE(delete-key,
+  [  --disable-delete-key    disable handling of the delete key],
+  [if test x$enableval = xno; then
+    AC_DEFINE(NO_DELETE_KEY, 1, Define if you don't want support for the (non-keypad) delete key)
+  fi])
+
+AC_ARG_ENABLE(resources,
+  [  --disable-resources     disable all resource checking],
+  [if test x$enableval = xno; then
+    AC_DEFINE(NO_RESOURCES, 1, Define if you don't want any resources read)
+  fi])
+
+AC_ARG_ENABLE(8bitctrls,
+  [  --enable-8bitctrls      enable 8 bit control sequences (not recommended)],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_8bitctrls=$enableval
+  fi])
+
+RESFALLBACK=Rxvt
+AC_ARG_ENABLE(fallback,
+  [  --enable-fallback(=CLASS) fall back on CLASS resources in addition to URxvt ones (default: Rxvt)],
+  [
+   test x$enableval = xyes && enableval=Rxvt
+   test x$enableval = xno  && enableval=
+   RESFALLBACK="$enableval"
+  ])
+
+if test x$RESFALLBACK != x; then
+   AC_DEFINE_UNQUOTED(RESFALLBACK, "$RESFALLBACK", [Fallback resource class])
+fi
+
+RESNAME=urxvt
+AC_ARG_WITH(res-name,
+  [  --with-res-name=NAME    use this as default resource name (default: urxvt)],
+  [RESNAME="$withval"])
+AC_DEFINE_UNQUOTED(RESNAME,"$RESNAME", [Default resource name])
+
+RESCLASS=URxvt
+AC_ARG_WITH(res-class,
+  [  --with-res-class=CLASS  use this as the resource class (default: URxvt)],
+  [RESCLASS="$withval"])
+AC_DEFINE_UNQUOTED(RESCLASS,"$RESCLASS", [Resource class])
+
+RXVTNAME=urxvt
+AC_ARG_WITH(name,
+  [  --with-name=NAME        set the basename for the installed binaries (default: urxvt)],
+  [RXVTNAME="$withval"])
+AC_DEFINE_UNQUOTED(RXVTNAME,"$RXVTNAME", [Binary base name])
+
+RXVTNAME=`echo "$RXVTNAME"|sed "$program_transform_name"`
+AC_SUBST(RXVTNAME)
+
+AC_ARG_ENABLE(swapscreen,
+  [  --disable-swapscreen    disable swap screen support],
+  [if test x$enableval = xno; then
+    AC_DEFINE(NO_SECONDARY_SCREEN, 1, Disable the secondary screen. Many programs use the secondary screen as their workplace)
+  fi])
+
+AC_ARG_ENABLE(iso14755,
+  [  --enable-iso14755       enable support for extended ISO 14755 modes],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_iso14755=$enableval
+  fi])
+
+AC_ARG_ENABLE(frills,
+  [  --enable-frills         enable support for rarely used features],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_frills=$enableval
+  fi])
+
+AC_ARG_ENABLE(24bit,
+  [  --enable-24bit          enable support for using 24bit visuals if available],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_24bit=$enableval
+  fi])
+
+AC_ARG_ENABLE(keepscrolling,
+  [  --enable-keepscrolling  enable continual scrolling on scrollbar arrow press],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_keepscrolling=$enableval
+  fi])
+
+AC_ARG_ENABLE(selectionscrolling,
+  [  --enable-selectionscrolling  enable scrolling during selections],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_selectionscrolling=$enableval
+  fi])
+
+AC_ARG_ENABLE(mousewheel,
+  [  --enable-mousewheel     enable scrolling via mouse wheel or buttons 4 & 5],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_mousewheel=$enableval
+  fi])
+
+AC_ARG_ENABLE(slipwheeling,
+  [  --enable-slipwheeling   enable slip wheel scrolling     (requires previous)],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_mouseslipwheel=$enableval
+  fi])
+
+AC_ARG_ENABLE(dmalloc,
+  [  --enable-dmalloc        enable Gray Watson's malloc - for debugging use],
+  [if test x$enableval = xyes; then
+    MALLOC_TYPE=G
+    DEBUG=-DDEBUG_MALLOC
+    DLIB="-L/usr/local/lib -ldmalloc"
+    DINCLUDE=-I/usr/local/include
+  fi])
+
+AC_ARG_ENABLE(dlmalloc,
+  [  --enable-dlmalloc       enable Doug Lea's malloc - for production use
+                     NOTE: enable only one malloc package],
+  [if test x$enableval = xyes; then
+    MALLOC_TYPE=D
+    DEBUG=
+    DLIB="-L/usr/local/lib -ldlmalloc"
+    DINCLUDE=
+  fi])
+
+AC_ARG_ENABLE(smart-resize,
+  [  --enable-smart-resize   enable smart growth/shrink behaviour],
+  [if test x$enableval = xyes; then
+    AC_DEFINE(SMART_RESIZE, 1, Define to use "smart" resize behavior)
+  fi])
+
+AC_ARG_ENABLE(text-blink,
+  [  --enable-text-blink     enable blinking text],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_text_blink=$enableval
+  fi])
+
+AC_ARG_ENABLE(pointer-blank,
+  [  --enable-pointer-blank  enable pointer blank when typing or inactive pointer],
+  [if test x$enableval = xyes -o x$enableval = xno; then
+    support_pointer_blank=$enableval
+  fi])
+
+AC_ARG_WITH(term,
+  [  --with-term=NAME        set the terminal to NAME (default: rxvt)],
+  [if test x$withval != x; then
+    AC_DEFINE_UNQUOTED(TERMENV, "$withval",Set TERM to the value given by configure) term="$withval"
+  fi])
+
+AC_ARG_WITH(terminfo,
+  [  --with-terminfo=PATH    set the path to the terminfo tree to PATH],
+  [if test x$withval != x; then
+    AC_DEFINE_UNQUOTED(RXVT_TERMINFO, "$withval", Set TERMINFO value to the value given by configure) terminfo="$withval"
+  fi])
+
+dnl# --------------------------------------------------------------------------
+
+AC_DEFINE(PROTOTYPES, 1, Define if you need function prototypes)
+
+AC_PATH_PROG(MV, mv, mv)
+AC_PATH_PROG(RM, rm, rm)
+AC_PATH_PROG(CP, cp, cp)
+AC_PATH_PROG(LN, ln, ln)
+AC_PATH_PROG(SED, sed, sed)
+AC_PATH_PROG(ECHO, echo, echo)
+AC_PATH_PROG(CMP, cmp, cmp)
+AC_PATH_PROG(TBL, tbl)
+AC_PATH_PROG(TIC, tic)
+
+dnl# need a neat way to detect SVR4 or its features
+dnl# in src/command.c we use these functions:
+dnl# grantpt(), unlockpt(), ptsname(), which are defined in 
+dnl# - but are these also defined for other systems?
+
+dnl# hack to find if this is SVR4 -- who knows?
+dnl## AC_MSG_CHECKING(for SVR4)
+dnl## AC_EGREP_CPP(yes,
+dnl## [#if defined (SVR4) || defined (_SVR4) || defined (__svr4__)
+dnl##   yes;
+dnl## #endif
+dnl## ], [AC_MSG_RESULT(yes); AC_DEFINE(PERHAPS_SVR4)], AC_MSG_RESULT(perhaps not?))
+
+AC_PATH_XTRA
+
+dnl# the only reasonable way to find libXpm is do-it-yourself
+dnl# only check if we want xpm-background
+
+if test x$support_xpm = xyes; then
+  VT_FIND_LIBXPM
+  if test x$no_xpm = xyes; then
+    support_xpm=needsmanualspecification
+  fi
+fi
+
+dnl# --------------------------------------------------------------------------
+dnl# CHECKING FOR HEADER FILES
+dnl# --------------------------------------------------------------------------
+AC_HEADER_SYS_WAIT
+AC_CHECK_HEADERS( \
+	assert.h \
+	fcntl.h \
+	grp.h \
+	libc.h \
+	lastlog.h \
+	stdarg.h \
+	stdlib.h \
+	string.h \
+	termios.h \
+	unistd.h \
+	sys/byteorder.h \
+	sys/ioctl.h \
+	sys/select.h \
+	sys/sockio.h \
+	sys/strredir.h \
+        sys/stropts.h \
+	sys/time.h \
+	utmp.h \
+	utmpx.h \
+        stdint.h \
+        pty.h \
+        util.h \
+        libutil.h \
+        wchar.h \
+        cwchar \
+        clocale \
+)
+
+AC_HEADER_TIME
+
+dnl# check to allow both  and 
+AC_CACHE_CHECK(whether termios.h and sys/ioctl.h may both be included, rxvt_cv_header_sysioctl,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include 
+#include 
+#ifdef HAVE_TERMIOS_H
+#include 
+#endif]], [[int a = ECHO;]])],[rxvt_cv_header_sysioctl=yes],[rxvt_cv_header_sysioctl=no])])
+
+dnl# ELF systems may want to store paths for dynamic libraries.
+dnl# Lets see if the compiler can accept "-Rpath" or "-Wl,-Rpath"
+dnl# At least one version of SunOS wants "-R path" but it's not checked yet.
+if test -n "$GCC"; then
+  LDARG="-Wl,"
+else
+  LDARG=""
+fi
+changequote(, )dnl
+R_TRANSLATE='s/-L\([^ ]*\)/-L\1 '$LDARG'-rpath '$LDARG'\1/g'
+changequote([, ])dnl
+
+ac_save_CFLAGS=$CFLAGS
+ac_save_LIBS=$LIBS
+CFLAGS="$CFLAGS $X_CFLAGS"
+LIBS=`echo "$LIBS $X_LIBS $X_EXTRA_LIBS -lX11" | sed "$R_TRANSLATE"`
+AC_CACHE_CHECK([for -rpath dynamic library path recording], rxvt_cv_rpath,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+main()
+{
+    exit(0);
+    (void) XOpenDisplay("foobar");
+}]])],[rxvt_cv_rpath=yes],[rxvt_cv_rpath=no],[dnl                  
+  AC_MSG_WARN(You may need to check the LIBS line)])])             
+if test x$rxvt_cv_rpath != xyes; then
+  changequote(, )dnl
+  R_TRANSLATE='s/-L\([^ ]*\)/-L\1 '$LDARG'-R\1/g'
+  changequote([, ])dnl
+  LIBS=`echo "$ac_save_LIBS $X_LIBS $X_EXTRA_LIBS -lX11" | sed "$R_TRANSLATE"`
+  AC_CACHE_CHECK([for -R dynamic library path recording], rxvt_cv_R,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+main()
+{
+    exit(0);
+    (void) XOpenDisplay("foobar");
+}]])],[rxvt_cv_R=yes],[rxvt_cv_R=no],[rxvt_cv_R=no])])             
+  if test x$rxvt_cv_R != xyes; then
+    LIBS="$ac_save_LIBS $X_LIBS $X_EXTRA_LIBS -lX11"
+  fi
+fi
+
+AC_CACHE_CHECK([for XPointer], rxvt_cv_xpointer,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[XPointer dummy;]])],[rxvt_cv_xpointer=yes],[rxvt_cv_xpointer=no])])
+if test x$rxvt_cv_xpointer = xyes; then
+  AC_DEFINE(HAVE_XPOINTER, 1, Define if you have XPointer typedef)
+fi
+LIBS=$ac_save_LIBS
+CFLAGS=$ac_save_CFLAGS
+
+
+AC_C_CONST
+AC_C_INLINE
+
+dnl> AC_HEADER_STDC	 dnl# skip this test, Sun always fails anyhow.
+
+dnl# --------------------------------------------------------------------------
+dnl# CHECKING FOR MISSING TYPEDEFS
+dnl# --------------------------------------------------------------------------
+dnl# Missing typedefs and replacements
+AC_TYPE_MODE_T
+dnl> AC_CHECK_TYPE(umode_t, int)
+dnl> AC_CHECK_TYPE(off_t, long)
+AC_TYPE_PID_T
+AC_TYPE_UID_T
+
+AC_CHECK_SIZEOF(short, 2)
+AC_CHECK_SIZEOF(int, 4)
+dnl AC_CHECK_SIZEOF(long, 4)
+AC_CHECK_SIZEOF(long long, 8)
+AC_CHECK_SIZEOF(int *, 4)
+
+dnl# see usage below
+AC_DEFUN(RXVT_CHECK_SIZE,
+  [AC_CACHE_CHECK([for $2], $1,
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[$2 dummy;]])],[$1=yes],[dnl
+if test "$ac_cv_sizeof_char" -ge $3; then
+  $1="$4 char"
+else
+  if test "$ac_cv_sizeof_short" -ge $3; then
+    $1="$4 short"
+  else
+    if test "$ac_cv_sizeof_int" -ge $3; then
+      $1="$4 int"
+    else
+      if test "$ac_cv_sizeof_long" -ge $3; then
+        $1="$4 long"
+      else
+        if test "$ac_cv_sizeof_long_long" -ge $3; then
+          $1="$4 long long"
+        else
+          $1="$4 $5" # we _must_ have a (possibly wrong) default
+        fi
+      fi
+    fi
+  fi
+fi])])]
+if test x"$$1" != xyes; then
+  $6="typedef $$1 $2;"
+else
+  if test x"$4" = x; then
+    $6="/* typedef $5 $2; */"
+  else
+    $6="/* typedef $4 $5 $2; */"
+  fi
+fi dnl
+)
+dnl#
+dnl# Look for types the system may know about anyway.
+dnl#
+RXVT_CHECK_SIZE(rxvt_cv_int16_t, int16_t, 2, , short, rxvt_int16_typedef)
+AC_SUBST(rxvt_int16_typedef)
+RXVT_CHECK_SIZE(rxvt_cv_uint16_t, uint16_t, 2, unsigned, short, rxvt_uint16_typedef)
+AC_SUBST(rxvt_uint16_typedef)
+RXVT_CHECK_SIZE(rxvt_cv_int32_t, int32_t, 4, , int, rxvt_int32_typedef)
+AC_SUBST(rxvt_int32_typedef)
+RXVT_CHECK_SIZE(rxvt_cv_uint32_t, uint32_t, 4, unsigned, int, rxvt_uint32_typedef)
+AC_SUBST(rxvt_uint32_typedef)
+dnl RXVT_CHECK_SIZE(rxvt_cv_int64_t, int64_t, 8, , long long, rxvt_int64_typedef)
+dnl AC_SUBST(rxvt_int64_typedef)
+dnl RXVT_CHECK_SIZE(rxvt_cv_uint64_t, uint64_t, 8, unsigned, long long, rxvt_uint64_typedef)
+dnl AC_SUBST(rxvt_uint64_typedef)
+dnl#
+dnl# Now look for another we use
+dnl#
+if test "$ac_cv_sizeof_int_p" -eq 8; then
+  rxvt_intp_define="#define intp_t int64_t"
+  rxvt_u_intp_define="#define u_intp_t u_int64_t"
+else
+  if test "$ac_cv_sizeof_int_p" -eq 4; then
+    rxvt_intp_define="#define intp_t int32_t"
+    rxvt_u_intp_define="#define u_intp_t u_int32_t"
+  else
+    if test "$ac_cv_sizeof_int_p" -eq 2; then
+      rxvt_intp_define="#define intp_t int16_t"
+      rxvt_u_intp_define="#define u_intp_t u_int16_t"
+    else
+      rxvt_intp_define="#error set intp_t"
+      rxvt_u_intp_define="#error set u_intp_t"
+    fi
+  fi
+fi
+AC_SUBST(rxvt_intp_define)
+AC_SUBST(rxvt_u_intp_define)
+
+dnl# --------------------------------------------------------------------------
+dnl# CHECKING FOR LIBRARY FUNCTIONS
+dnl# --------------------------------------------------------------------------
+AC_TYPE_SIGNAL
+dnl> AC_FUNC_VPRINTF
+
+dnl# Note: On Ultrix, setsid() does weirdo stuff, disable it
+case "$host_alias" in
+    *ultrix) ac_cv_func_setsid='no' ;;
+    *) break;;
+esac
+
+AC_CHECK_FUNCS( \
+	atexit \
+	revoke \
+	unsetenv \
+	setutent \
+	seteuid \
+	setreuid \
+	setsid \
+	setpgrp \
+	setpgid \
+	_getpty \
+	getpt \
+	posix_openpt \
+	grantpt \
+	unlockpt \
+	isastream \
+	on_exit \
+	nanosleep \
+	updwtmp \
+	updwtmpx \
+	ttyslot \
+)
+
+dnl# --------------------------------------------------------------------------
+dnl# DO ALL UTMP AND WTMP CHECKING
+dnl# --------------------------------------------------------------------------
+dnl# check for host field in utmp structure
+
+dnl# --------------------------------------------
+AC_CHECK_HEADER(utmp.h,
+[AC_CACHE_CHECK([for struct utmp], rxvt_cv_struct_utmp,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include 
+#include 
+#include ]], [[struct utmp ut;]])],[rxvt_cv_struct_utmp=yes],[rxvt_cv_struct_utmp=no])])
+if test x$rxvt_cv_struct_utmp = xyes; then
+  AC_DEFINE(HAVE_STRUCT_UTMP, 1, Define if utmp.h has struct utmp)
+fi
+]
+
+AC_CACHE_CHECK(for ut_host in utmp struct, rxvt_cv_struct_utmp_host,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include 
+#include ]], [[struct utmp ut; ut.ut_host;]])],[rxvt_cv_struct_utmp_host=yes],[rxvt_cv_struct_utmp_host=no])])
+if test x$rxvt_cv_struct_utmp_host = xyes; then
+  AC_DEFINE(HAVE_UTMP_HOST, 1, Define if struct utmp contains ut_host)
+fi
+
+AC_CACHE_CHECK(for ut_pid in utmp struct, rxvt_cv_struct_utmp_pid,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include 
+#include ]], [[struct utmp ut; ut.ut_pid;]])],[rxvt_cv_struct_utmp_pid=yes],[rxvt_cv_struct_utmp_pid=no])])
+if test x$rxvt_cv_struct_utmp_pid = xyes; then
+  AC_DEFINE(HAVE_UTMP_PID, 1, Define if struct utmp contains ut_pid)
+fi
+) dnl# AC_CHECK_HEADER(utmp.h
+
+dnl# --------------------------------------------
+
+AC_CHECK_HEADER(utmpx.h,
+[AC_CACHE_CHECK([for struct utmpx], rxvt_cv_struct_utmpx,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include 
+#include ]], [[struct utmpx ut;]])],[rxvt_cv_struct_utmpx=yes],[rxvt_cv_struct_utmpx=no])])
+if test x$rxvt_cv_struct_utmpx = xyes; then
+  AC_DEFINE(HAVE_STRUCT_UTMPX, 1, Define if utmpx.h has struct utmpx)
+fi
+]
+
+AC_CACHE_CHECK(for host in utmpx struct, rxvt_cv_struct_utmpx_host,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include 
+#include ]], [[struct utmpx utx; utx.ut_host;]])],[rxvt_cv_struct_utmpx_host=yes],[rxvt_cv_struct_utmpx_host=no])])
+if test x$rxvt_cv_struct_utmpx_host = xyes; then
+  AC_DEFINE(HAVE_UTMPX_HOST, 1, Define if struct utmpx contains ut_host)
+fi
+
+AC_CACHE_CHECK(for session in utmpx struct, rxvt_cv_struct_utmpx_session,
+[AC_TRY_COMPILE([#include 
+#include ],
+[struct utmpx utx; utx.ut_session;],
+rxvt_cv_struct_utmpx_session=yes, rxvt_cv_struct_utmpx_session=no)])
+if test x$rxvt_cv_struct_utmpx_session = xyes; then
+  AC_DEFINE(HAVE_UTMPX_SESSION, 1, Define if struct utmpx contains ut_session)
+fi
+) dnl# AC_CHECK_HEADER(utmpx.h
+
+dnl# --------------------------------------------------------------------------
+dnl# check for struct lastlog
+AC_CACHE_CHECK(for struct lastlog, rxvt_cv_struct_lastlog,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include 
+#include 
+#ifdef HAVE_LASTLOG_H
+#include 
+#endif
+]], [[struct lastlog ll;]])],[rxvt_cv_struct_lastlog=yes],[rxvt_cv_struct_lastlog=no])])
+if test x$rxvt_cv_struct_lastlog = xyes; then
+  AC_DEFINE(HAVE_STRUCT_LASTLOG, 1, Define if utmp.h or lastlog.h has struct lastlog)
+fi
+
+dnl# check for struct lastlogx
+AC_CACHE_CHECK(for struct lastlogx, rxvt_cv_struct_lastlogx,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include 
+#include 
+#ifdef HAVE_LASTLOG_H
+#include 
+#endif
+]], [[struct lastlogx ll;]])],[rxvt_cv_struct_lastlogx=yes],[rxvt_cv_struct_lastlogx=no])])
+if test x$rxvt_cv_struct_lastlogx = xyes; then
+  AC_DEFINE(HAVE_STRUCT_LASTLOGX, 1, Define if utmpx.h or lastlog.h has struct lastlogx)
+fi
+
+dnl# --------------------------------------------------------------------------
+dnl# FIND FILES
+dnl# --------------------------------------------------------------------------
+
+dnl# find utmp
+AC_CACHE_CHECK(where utmp is located, rxvt_cv_path_utmp,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include 
+#include 
+#include 
+#include 
+main()
+{
+    char **u, *utmplist[] = {
+    "/var/run/utmp", "/var/adm/utmp", "/etc/utmp", "/usr/etc/utmp", "/usr/adm/utmp", NULL };
+    FILE *a, *f=fopen("conftestval", "w");
+    if (!f) exit(1);
+#ifdef UTMP_FILE
+    fprintf(f, "%s\n", UTMP_FILE);
+    exit(0);
+#endif
+#ifdef _PATH_UTMP
+    fprintf(f, "%s\n", _PATH_UTMP);
+    exit(0);
+#endif
+    for (u = utmplist; *u; u++) {
+	if ((a = fopen(*u, "r")) != NULL || errno == EACCES) {
+	    fprintf(f, "%s\n", *u);
+	    exit(0);
+	}
+    }
+    exit(0);
+}]])],[rxvt_cv_path_utmp=`cat conftestval`],[rxvt_cv_path_utmp=],[dnl
+  AC_MSG_WARN(Define RXVT_UTMP_FILE in config.h manually)])])
+if test x$rxvt_cv_path_utmp != x; then
+  AC_DEFINE_UNQUOTED(RXVT_UTMP_FILE, "$rxvt_cv_path_utmp", Define location of utmp)
+fi
+
+dnl# --------------------------------------------------------------------------
+
+dnl# find utmpx - if a utmp file exists at the same location and is more than
+dnl# a day newer, then dump the utmpx.  People leave lots of junk around.
+AC_CACHE_CHECK(where utmpx is located, rxvt_cv_path_utmpx,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include 
+#include 
+#include 
+#include 
+#include 
+#ifdef HAVE_STRING_H
+#include 
+#endif
+main()
+{
+    char **u, *p, *utmplist[] = {
+#ifdef UTMPX_FILE
+	UTMPX_FILE,
+#endif
+#ifdef _PATH_UTMPX
+	_PATH_UTMPX,
+#endif
+    "/var/adm/utmpx", "/etc/utmpx", NULL };
+    FILE *a, *f=fopen("conftestval", "w");
+    struct stat statu, statux;
+    if (!f) exit(1);
+    for (u = utmplist; *u; u++) {
+	if ((a = fopen(*u, "r")) != NULL || errno == EACCES) {
+	    if (stat(*u, &statux) < 0)
+		continue;
+	    p = strdup(*u);
+	    p[strlen(p) - 1] = '\0';
+	    if (stat(p, &statu) >= 0
+		&& (statu.st_mtime - statux.st_mtime > 86400))
+		continue;
+	    fprintf(f, "%s\n", *u);
+	    exit(0);
+	}
+    }
+    exit(0);
+}]])],[rxvt_cv_path_utmpx=`cat conftestval`],[rxvt_cv_path_utmpx=],[dnl
+  AC_MSG_WARN(Define RXVT_UTMPX_FILE in config.h manually)])])
+if test x$rxvt_cv_path_utmpx != x; then
+  AC_DEFINE_UNQUOTED(RXVT_UTMPX_FILE, "$rxvt_cv_path_utmpx", Define location of utmpx)
+fi
+
+dnl# --------------------------------------------------------------------------
+
+dnl# find wtmp
+AC_CACHE_CHECK(where wtmp is located, rxvt_cv_path_wtmp,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include 
+#include 
+#ifdef HAVE_UTMP_H
+#include 
+#endif
+#include 
+main()
+{
+    char **w, *wtmplist[] = {
+    "/var/log/wtmp", "/var/adm/wtmp", "/etc/wtmp", "/usr/etc/wtmp", "/usr/adm/wtmp", NULL }; 
+    FILE *a, *f=fopen("conftestval", "w");
+    if (!f) exit(1);
+#ifdef WTMP_FILE
+    fprintf(f, "%s\n", WTMP_FILE);
+    exit(0);
+#endif
+#ifdef _PATH_WTMP
+    fprintf(f, "%s\n", _PATH_WTMP);
+    exit(0);
+#endif
+    for (w = wtmplist; *w; w++) {
+	if ((a = fopen(*w, "r")) != NULL || errno == EACCES) {
+	    fprintf(f, "%s\n", *w);
+	    exit(0);
+	}
+    }
+    exit(0);
+}]])],[rxvt_cv_path_wtmp=`cat conftestval`],[rxvt_cv_path_wtmp=],[dnl
+  AC_MSG_WARN(Define RXVT_WTMP_FILE in config.h manually)])])
+if test x$rxvt_cv_path_wtmp != x; then
+  AC_DEFINE_UNQUOTED(RXVT_WTMP_FILE, "$rxvt_cv_path_wtmp", Define location of wtmp)
+fi
+dnl# --------------------------------------------------------------------------
+
+dnl# find wtmpx
+AC_CACHE_CHECK(where wtmpx is located, rxvt_cv_path_wtmpx,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include 
+#ifdef HAVE_UTMPX_H
+#include 
+#endif
+#include 
+main()
+{
+    char **w, *wtmplist[] = {
+    "/var/log/wtmpx", "/var/adm/wtmpx", NULL }; 
+    FILE *a, *f=fopen("conftestval", "w");
+    if (!f) exit(1);
+#ifdef WTMPX_FILE
+    fprintf(f, "%s\n", WTMPX_FILE);
+    exit(0);
+#endif
+#ifdef _PATH_WTMPX
+    fprintf(f, "%s\n", _PATH_WTMPX);
+    exit(0);
+#endif
+    for (w = wtmplist; *w; w++) {
+	if ((a = fopen(*w, "r")) != NULL || errno == EACCES) {
+	    fprintf(f, "%s\n", *w);
+	    exit(0);
+	}
+    }
+    exit(0);
+}]])],[rxvt_cv_path_wtmpx=`cat conftestval`],[rxvt_cv_path_wtmpx=],[dnl
+  AC_MSG_WARN(Define RXVT_WTMPX_FILE in config.h manually)])])
+if test x$rxvt_cv_path_wtmpx != x; then
+  AC_DEFINE_UNQUOTED(RXVT_WTMPX_FILE, "$rxvt_cv_path_wtmpx", Define location of wtmpx)
+fi
+dnl# --------------------------------------------------------------------------
+
+dnl# find lastlog
+AC_CACHE_CHECK(where lastlog is located, rxvt_cv_path_lastlog,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include 
+#include 
+#ifdef HAVE_UTMPX_H
+#include 
+#elif defined(HAVE_UTMP_H)
+#include 
+#endif
+#ifdef HAVE_LASTLOG_H
+#include 
+#endif
+#include 
+main()
+{
+    char **w, *lastloglist[] = { "/var/log/lastlog", NULL };
+    FILE *a, *f=fopen("conftestval", "w");
+    if (!f) exit(1);
+#ifdef LASTLOG_FILE
+    fprintf(f, "%s\n", LASTLOG_FILE);
+    exit(0);
+#endif
+#ifdef _PATH_LASTLOG
+    fprintf(f, "%s\n", _PATH_LASTLOG);
+    exit(0);
+#endif
+    for (w = lastloglist; *w; w++) {
+	if ((a = fopen(*w, "r")) != NULL || errno == EACCES) {
+	    fprintf(f, "%s\n", *w);
+	    exit(0);
+	}
+    }
+    exit(0);
+}]])],[rxvt_cv_path_lastlog=`cat conftestval`],[rxvt_cv_path_lastlog=],[dnl
+  AC_MSG_WARN(Define RXVT_LASTLOG_FILE in config.h manually)])])
+if test x$rxvt_cv_path_lastlog != x; then
+  AC_DEFINE_UNQUOTED(RXVT_LASTLOG_FILE, "$rxvt_cv_path_lastlog", Define location of lastlog)
+  if test -d "$rxvt_cv_path_lastlog"; then
+    AC_DEFINE(LASTLOG_IS_DIR, 1, Define if lastlog is provided via a directory)
+  fi
+fi
+dnl# --------------------------------------------------------------------------
+
+dnl# find lastlogx
+AC_CACHE_CHECK(where lastlogx is located, rxvt_cv_path_lastlogx,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include 
+#ifdef HAVE_UTMPX_H
+#include 
+#endif
+#include 
+main()
+{
+    char **w, *wtmplist[] = { "/var/log/lastlogx", "/var/adm/lastlogx", NULL };
+    FILE *a, *f=fopen("conftestval", "w");
+    if (!f) exit(1);
+#ifdef LASTLOGX_FILE
+    fprintf(f, "%s\n", LASTLOGX_FILE);
+    exit(0);
+#endif
+#ifdef _PATH_LASTLOGX
+    fprintf(f, "%s\n", _PATH_LASTLOGX);
+    exit(0);
+#endif
+    for (w = wtmplist; *w; w++) {
+	if ((a = fopen(*w, "r")) != NULL || errno == EACCES) {
+	    fprintf(f, "%s\n", *w);
+	    exit(0);
+	}
+    }
+    exit(0);
+}]])],[rxvt_cv_path_lastlogx=`cat conftestval`],[rxvt_cv_path_lastlogx=],[dnl
+  AC_MSG_WARN(Define RXVT_LASTLOGX_FILE in config.h manually)])])
+if test x$rxvt_cv_path_lastlogx != x; then
+  AC_DEFINE_UNQUOTED(RXVT_LASTLOGX_FILE, "$rxvt_cv_path_lastlogx", Define location of lastlogx)
+fi
+
+dnl# --------------------------------------------------------------------------
+
+dnl# find ttys/ttytab
+AC_CACHE_CHECK(where ttys/ttytab is located, rxvt_cv_path_ttytab,
+[for ttys_file in   dnl
+  /etc/ttys /etc/ttytab;
+do
+  if test -f "$ttys_file" ; then 
+    rxvt_cv_path_ttytab=$ttys_file
+    break
+  fi
+done
+])
+if test x$rxvt_cv_path_ttytab != x; then
+  AC_DEFINE_UNQUOTED(TTYTAB_FILENAME, "$rxvt_cv_path_ttytab", Define location of ttys/ttytab)
+fi
+
+dnl# --------------------------------------------------------------------------
+dnl# --------------------------------------------------------------------------
+
+dnl# this is a really hack test for some basic Xlocale stuff
+ac_save_LIBS=$LIBS
+ac_save_CFLAGS=$CFLAGS
+CFLAGS="$CFLAGS $X_CFLAGS"
+LIBS="$LIBS $X_LIBS $X_EXTRA_LIBS -lX11"
+if test x$rxvt_cv_rpath = xyes -o x$rxvt_cv_R = xyes; then
+  LIBS=`echo $LIBS | sed "$R_TRANSLATE"`
+fi
+AC_CACHE_CHECK(for working Xlocale, rxvt_cv_func_xlocale,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include 
+main() {
+char *p;
+if ((p = XSetLocaleModifiers("@im=none")) != NULL && *p)
+exit (XSupportsLocale() ? 0 : 1);
+else
+exit (1);}]])],[dnl
+  rxvt_cv_func_xlocale=yes],[rxvt_cv_func_xlocale=no],[dnl
+  AC_MSG_WARN(Define NO_XLOCALE in config.h manually)])])
+if test x$rxvt_cv_func_xlocale = xyes; then
+  AC_DEFINE(HAVE_XLOCALE, 1, Define if Xlocale support works)
+fi
+
+AC_CACHE_CHECK(for working X setlocale, rxvt_cv_func_xsetlocale,
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define X_LOCALE 1
+#include ]], [[setlocale(LC_CTYPE, "");]])],[rxvt_cv_func_xsetlocale=yes],[rxvt_cv_func_xsetlocale=no])])
+if test x$rxvt_cv_func_xsetlocale = xyes; then
+  AC_DEFINE(HAVE_XSETLOCALE, 1, Define if setlocale (defined to Xsetlocale) works)
+fi
+LIBS=$ac_save_LIBS
+CFLAGS=$ac_save_CFLAGS
+
+AC_CACHE_CHECK(for working plain setlocale, rxvt_cv_func_setlocale,
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], [[setlocale(LC_CTYPE, "");]])],[rxvt_cv_func_setlocale=yes],[rxvt_cv_func_setlocale=no])])
+if test x$rxvt_cv_func_setlocale = xyes; then
+  AC_DEFINE(HAVE_SETLOCALE, 1, Define if plain old setlocale works)
+fi
+
+AC_CACHE_CHECK(for working nl_langinfo, rxvt_cv_func_nl_langinfo,
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], [[nl_langinfo(CODESET);]])],[rxvt_cv_func_nl_langinfo=yes],[rxvt_cv_func_nl_langinfo=no])])
+if test x$rxvt_cv_func_nl_langinfo = xyes; then
+  AC_DEFINE(HAVE_NL_LANGINFO, 1, Define if nl_langinfo(CODESET) works)
+fi
+
+AC_CACHE_CHECK(for unix-compliant filehandle passing ability, rxvt_can_pass_fds,
+[AC_TRY_LINK([
+#include 
+#include 
+],[
+{
+  msghdr msg;
+  iovec iov;
+  char buf [100];
+  char data = 0;
+
+  iov.iov_base = &data;
+  iov.iov_len  = 1;
+
+  msg.msg_iov        = &iov;
+  msg.msg_iovlen     = 1;
+  msg.msg_control    = buf;
+  msg.msg_controllen = sizeof buf;
+
+  cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
+  cmsg->cmsg_level = SOL_SOCKET;
+  cmsg->cmsg_type  = SCM_RIGHTS;
+  cmsg->cmsg_len   = 100;
+
+  *(int *)CMSG_DATA (cmsg) = 5;
+
+  return sendmsg (3, &msg, 0);
+}
+],[rxvt_can_pass_fds=yes],[rxvt_can_pass_fds=no])])
+if test x$rxvt_can_pass_fds = xyes; then
+   AC_DEFINE(HAVE_UNIX_FDPASS, 1, Define if sys/socket.h defines the necessary macros/functions for file handle passing)
+fi
+
+AC_CACHE_CHECK(for broken XIM callback, rxvt_broken_ximcb,
+[AC_COMPILE_IFELSE([
+#include 
+
+void im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3);
+
+void f() {
+  XIMCallback cb;
+  cb.callback = im_destroy_cb;
+}
+],rxvt_broken_ximcb=yes,rxvt_broken_ximcb=no)])
+
+if test x$rxvt_broken_ximcb = xyes; then
+   AC_DEFINE(XIMCB_PROTO_BROKEN, 1, Define if your XIMCallback specifies XIC as first type.)
+fi
+
+if test x$ac_cv_func_getpt = xno -a x$ac_cv_func_posix_openpt = xno; then
+  AC_CHECK_FUNC(openpty, [], [AC_CHECK_LIB(util, openpty, [LIBS="$LIBS -lutil"])])
+fi
+
+dnl# if we don't guess right then it's up to the user
+AC_CACHE_CHECK(for pty/tty type, rxvt_cv_ptys,
+[if test x$ac_cv_func_openpty = xyes -o x$ac_cv_lib_util_openpty = xyes; then
+    rxvt_cv_ptys=OPENPTY
+ else if test x$ac_cv_func_getpt = xyes; then
+    rxvt_cv_ptys=GLIBC
+ else if test x$ac_cv_func_posix_openpt = xyes; then
+    rxvt_cv_ptys=POSIX
+ else if test x$ac_cv_func__getpty = xyes; then
+    rxvt_cv_ptys=SGI4
+ else if test -c /dev/ttyp20; then
+    rxvt_cv_ptys=SCO
+ else if test -c /dev/ptym/clone; then
+    rxvt_cv_ptys=HPUX
+ else if test -c /dev/ptc -a -c /dev/pts; then
+    rxvt_cv_ptys=PTC
+ else if test -c /dev/ptc -a -d /dev/pts; then
+    rxvt_cv_ptys=PTC
+ else if test -c /dev/ptmx -a -c /dev/pts/0; then
+    rxvt_cv_ptys=STREAMS
+ else if test x$ac_cv_func_grantpt = xyes && test x$ac_cv_func_unlockpt = xyes; then
+dnl# catch CYGWIN
+    rxvt_cv_ptys=STREAMS
+ else
+    rxvt_cv_ptys=BSD
+fi
+fi
+fi
+fi
+fi
+fi
+fi
+fi
+fi
+fi
+])
+
+if test x$rxvt_cv_ptys = xGLIBC; then
+  AC_DEFINE(PTYS_ARE_GETPT, 1, Define for this pty type)
+fi
+if test x$rxvt_cv_ptys = xPOSIX; then
+  AC_DEFINE(PTYS_ARE_POSIX, 1, Define for this pty type)
+fi
+if test x$rxvt_cv_ptys = xOPENPTY; then
+  AC_DEFINE(PTYS_ARE_OPENPTY, 1, Define for this pty type)
+fi
+if test x$rxvt_cv_ptys = xSCO; then
+  AC_DEFINE(PTYS_ARE_NUMERIC, 1, Define for this pty type)
+fi
+if test x$rxvt_cv_ptys = xSTREAMS; then
+  AC_DEFINE(PTYS_ARE_PTMX, 1, Define for this pty type)
+fi
+if test x$rxvt_cv_ptys = xPTC; then
+  AC_DEFINE(PTYS_ARE_PTC, 1, Define for this pty type)
+fi
+if test x$rxvt_cv_ptys = xSGI4; then
+  AC_DEFINE(PTYS_ARE__GETPTY, 1, Define for this pty type)
+fi
+if test x$rxvt_cv_ptys = xHPUX; then
+  AC_DEFINE(PTYS_ARE_CLONE, 1, Define for this pty type)
+fi
+if test x$rxvt_cv_ptys = xBSD -o x$rxvt_cv_ptys = xHPUX -o x$rxvt_cv_ptys = xPOSIX; then
+  AC_DEFINE(PTYS_ARE_SEARCHED, 1, Define for this pty type)
+fi
+
+
+AS_MESSAGE(checking for pty ranges...)
+ptys=`echo /dev/pty??`
+pch1=`echo $ptys | tr ' ' '\012' | sed -e 's/^.*\(.\).$/\1/g' | sort -u | tr -d '\012'`
+pch2=`echo $ptys | tr ' ' '\012' | sed -e 's/^.*\(.\)$/\1/g' | sort -u | tr -d '\012'`
+if test x$pch1 != x; then
+  AC_DEFINE_UNQUOTED(PTYCHAR1, "$pch1", Define for first char in devptyXX)
+fi
+if test x$pch2 != x; then
+  AC_DEFINE_UNQUOTED(PTYCHAR2, "$pch2", Define for second char in devptyXX)
+fi
+
+dnl# --------------------------------------------------------------------------
+dnl# now add and remove other stuff
+dnl# --------------------------------------------------------------------------
+if test x$support_xft = xyes; then
+  LIBS="$LIBS `pkg-config xft --libs`"
+  CPPFLAGS="$CPPFLAGS `pkg-config xft --cflags`"
+
+  AC_CHECK_HEADERS(X11/Xft/Xft.h,,[support_xft=no])
+  AC_CHECK_LIB(Xft,XftDrawString32,,[support_xft=no])
+
+  if test x$support_xft = xyes; then
+    AC_DEFINE(XFT, 1, Define to enable xft support)
+  fi
+fi
+if test x$support_styles = xyes; then
+  AC_DEFINE(ENABLE_STYLES, 1, Define if you want bold and italic support)
+fi
+if test x$support_iso14755 = xyes; then
+  AC_DEFINE(ISO_14755, 1, Define if you want ISO 14755 extended support)
+fi
+if test x$support_8bitctrls = xyes; then
+  AC_DEFINE(EIGHT_BIT_CONTROLS, 1, Define if you want 8 bit control sequences)
+fi
+if test x$support_fading = xyes; then
+  AC_DEFINE(OFF_FOCUS_FADING, 1, Define if you want faded colors when focus is lost)
+fi
+if test x$support_tinting = xyes; then
+  AC_DEFINE(TINTING, 1, Define if you want your background to be tinted)
+fi
+if test x$support_inheritpixmap = xyes; then
+  AC_DEFINE(TRANSPARENT, 1, Define if you want your background to use the parent window background)
+fi
+if test x$support_keepscrolling = xno; then
+  AC_DEFINE(NO_SCROLLBAR_BUTTON_CONTINUAL_SCROLLING, 1, Define for continual scrolling when you keep the scrollbar button pressed)
+fi
+if test x$support_selectionscrolling = xyes; then
+  AC_DEFINE(SELECTION_SCROLLING, 1, Define to allow scrolling when the selection moves to the top or bottom of the screen)
+fi
+if test x$support_frills = xyes; then
+  AC_DEFINE(ENABLE_FRILLS, 1, Define if you want handling for rarely used but handy features)
+fi
+if test x$support_24bit = xyes; then
+  AC_DEFINE(PREFER_24BIT, 1, Define to use a 24 bit visual if the screen has 24 bit mode, even if the default is 8 bit)
+fi
+if test x$support_mousewheel = xyes; then
+  AC_DEFINE(MOUSE_WHEEL, 1, Define to use wheel events (button4 and button5) to scroll)
+fi
+if test x$support_mouseslipwheel = xyes; then
+  AC_DEFINE(MOUSE_SLIP_WHEELING, 1, Define to have CTRL cause wheel events to accelerate scrolling. Release CTRL to halt scrolling)
+fi
+if test x$support_utmp = xyes; then
+  AC_DEFINE(UTMP_SUPPORT, 1, Define if you want to have utmp/utmpx support)
+fi
+if test x$support_wtmp = xyes; then
+  AC_DEFINE(WTMP_SUPPORT, 1, Define if you want to have wtmp support when utmp/utmpx is enabled)
+fi
+if test x$support_lastlog = xyes; then
+  AC_DEFINE(LASTLOG_SUPPORT, 1, Define if you want to have lastlog support when utmp/utmpx is enabled)
+fi
+if test x$support_xim = xyes -o x$multichar_set = xyes; then
+  if test x$rxvt_cv_func_xlocale = xyes; then
+    AC_DEFINE(USE_XIM, 1, Define if you want to have XIM (X Input Method) protocol support - required for multibyte characters input)
+  fi
+fi
+if test x$support_xpm = xyes; then
+  AC_DEFINE(XPM_BACKGROUND, 1, Define if you want to have sexy-looking background pixmaps. Needs libXpm)
+fi
+if test x$support_scroll_rxvt = xyes; then
+  AC_DEFINE(RXVT_SCROLLBAR, 1, Support Rxvt original style scrollbars)
+  scrolltypes="rxvt"
+fi
+if test x$support_scroll_next = xyes; then
+  AC_DEFINE(NEXT_SCROLLBAR, 1, Support NeXT style scrollbars)
+  scrolltypes="$scrolltypes next"
+fi
+if test x$support_scroll_xterm = xyes; then
+  AC_DEFINE(XTERM_SCROLLBAR, 1, Support Xterm style scrollbars)
+  scrolltypes="$scrolltypes xterm"
+fi
+if test x$support_scroll_plain = xyes; then
+  AC_DEFINE(PLAIN_SCROLLBAR, 1, Support plain style scrollbars)
+  scrolltypes="$scrolltypes plain"
+fi
+if test x$support_pointer_blank = xyes; then
+  AC_DEFINE(POINTER_BLANK, 1, Define if you want hide the pointer while typing)
+fi
+if test x$support_text_blink = xyes; then
+  AC_DEFINE(TEXT_BLINK, 1, Define if you want blinking text support)
+fi
+if test x$support_unicode3 = xyes; then
+  AC_DEFINE(UNICODE_3, 1, Define if you want to represent unicode characters outside plane 0)
+fi
+if test x$support_combining = xyes; then
+  AC_DEFINE(ENABLE_COMBINING, 1, Define if you want to automatically compose combining characters)
+fi
+if test x$codesets = xall; then
+  codesets=jp,jp-ext,kr,zh,zh-ext
+fi
+AC_DEFINE(ENCODING_EU, 1, Define if you want european extended codesets)
+AC_DEFINE(ENCODING_VN, 1, Define if you want vietnamese codesets)
+for codeset in `echo $codesets | tr "[a-z,\\-]" "[A-Z _]"`; do
+  case "$codeset" in
+    JP     ) AC_DEFINE(ENCODING_JP,     1, Define if you want japanese codesets) ;;
+    JP_EXT ) AC_DEFINE(ENCODING_JP_EXT, 1, Define if you want extended japanese codesets) ;;
+    KR     ) AC_DEFINE(ENCODING_KR,     1, Define if you want korean codesets) ;;
+    ZH     ) AC_DEFINE(ENCODING_ZH,     1, Define if you want chinese codesets) ;;
+    ZH_EXT ) AC_DEFINE(ENCODING_ZH_EXT, 1, Define if you want extended chinese codesets) ;;
+  esac
+done
+
+IF_PERL=\#
+if test x$support_perl = xyes; then
+  AC_PATH_PROG(PERL, perl5)
+  AC_PATH_PROG(PERL, perl)
+
+  AC_MSG_CHECKING(for $PERL suitability)
+  if $PERL -MExtUtils::Embed -e "use v5.8" >/dev/null 2>/dev/null; then
+
+     save_CXXFLAGS="$CXXFLAGS"
+     save_LIBS="$LIBS"
+     CXXFLAGS="$CXXFLAGS `$PERL -MExtUtils::Embed -e ccopts`"
+     LIBS="$LIBS `$PERL -MExtUtils::Embed -e ldopts`"
+     AC_TRY_LINK([
+#include 
+#include 
+#include 
+],[
+     PerlInterpreter *perl = perl_alloc ();
+],[rxvt_perl_link=yes],[rxvt_perl_link=no])
+     CXXFLAGS="$save_CXXFLAGS"
+     LIBS="$save_LIBS"
+
+     if test x$rxvt_perl_link = xyes; then
+        AC_MSG_RESULT(ok)
+        AC_DEFINE(ENABLE_PERL, 1, Define if you can embed a perl interpreter)
+        IF_PERL=
+        PERL_O=rxvtperl.o
+        PERLFLAGS="`$PERL -MExtUtils::Embed -e ccopts`"
+        PERLLIB="`$PERL -MExtUtils::Embed -e ldopts`"
+        PERLPRIVLIBEXP="`$PERL -MConfig -e 'print $Config{privlibexp}'`"
+     else
+        support_perl=no
+        AC_MSG_RESULT([no, unable to link])
+     fi
+  else
+     AC_MSG_ERROR(no working perl found, or perl not version >= 5.8)
+     support_perl=no
+  fi
+fi
+AC_SUBST(PERLLIB)
+AC_SUBST(PERLFLAGS)
+AC_SUBST(PERLPRIVLIBEXP)
+AC_SUBST(PERL)
+AC_SUBST(IF_PERL)
+AC_SUBST(PERL_O)
+
+if test x$support_perl = xyes; then
+   support_frills=yes
+fi
+
+dnl> AC_CHECK_FUNCS(gettimeofday putenv select socket)
+
+CFLAGS=${CFLAGS--O}
+LDFLAGS=${LDFLAGS--O}
+
+CPPFLAGS="$CPPFLAGS"
+AC_SUBST(DEBUG)
+AC_SUBST(DINCLUDE)
+AC_SUBST(CFLAGS)
+AC_SUBST(CPPFLAGS)
+AC_SUBST(LDFLAGS)
+AC_SUBST(X_CFLAGS)
+
+dnl# Attack the libs
+if test x$rxvt_cv_rpath = xyes -o x$rxvt_cv_R = xyes; then
+  DLIB=`echo $DLIB | sed "$R_TRANSLATE"`
+  LIBS=`echo $LIBS | sed "$R_TRANSLATE"`
+  X_LIBS=`echo $X_LIBS | sed "$R_TRANSLATE"`
+  X_EXTRA_LIBS=`echo $X_EXTRA_LIBS | sed "$R_TRANSLATE"`
+  XPM_LIBS=`echo $XPM_LIBS | sed "$R_TRANSLATE"`
+fi
+AC_SUBST(DLIB)
+AC_SUBST(LIBS)
+AC_SUBST(X_LIBS)
+AC_SUBST(X_EXTRA_LIBS)
+
+AC_ARG_PROGRAM
+
+dnl# test for "sun" or "__sun__" before include sys_ioctl
+
+dnl# revert HAVE_BLAH_H into a "#include "
+AC_DEFUN(RXVT_DEFINE_TO_INCLUDE, dnl
+[if test "$$3" = "$4" -o "$$5" = "$6"; then
+  $1="#include <$2>"
+else
+  $1="/* #include <$2> */"
+fi dnl
+AC_SUBST($1)])
+
+RXVT_DEFINE_TO_INCLUDE(include_stdint_h, stdint.h, ac_cv_header_stdint_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_stdarg_h, cstdarg, ac_cv_header_stdarg_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_stdlib_h, cstdlib, ac_cv_header_stdlib_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_unistd_h, unistd.h, ac_cv_header_unistd_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_string_h, cstring, ac_cv_header_string_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_fcntl_h, fcntl.h, ac_cv_header_fcntl_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_util_h, util.h, ac_cv_header_util_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_assert_h, assert.h, ac_cv_header_assert_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_sys_ioctl_h, sys/ioctl.h, rxvt_cv_header_sysioctl, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_sys_select_h, sys/select.h, ac_cv_header_sys_select_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_sys_strredir_h, sys/strredir.h, ac_cv_header_sys_strredir_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_sys_time_h, sys/time.h, ac_cv_header_sys_time_h, yes, notset, dontmatch)
+RXVT_DEFINE_TO_INCLUDE(include_time_h, time.h, ac_cv_header_sys_time_h, no, ac_cv_header_time, yes)
+
+AC_CONFIG_FILES([Makefile \
+doc/Makefile \
+src/Makefile \
+src/rxvtlib.h \
+])
+AC_OUTPUT
+
+echo "Configuration:
+
+  Rxvt version:               $VERSION : $DATE
+  Source code location:       $srcdir
+  Install path:               ${prefix}/bin
+  Compiler:                   $CXX
+  Compiler flags:             $CFLAGS
+  Linker:                     $LINKER"
+
+if test "$MALLOC_TYPE" = S; then
+  echo "  malloc support:             system default"
+fi
+if test "$MALLOC_TYPE" = G; then
+  echo "  malloc support:             Gray Watson's dmalloc"
+fi
+if test "$MALLOC_TYPE" = D; then
+  echo "  malloc support:             Doug Lea's malloc"
+fi
+
+if test x$support_xpm = xyes; then
+  echo "  Xpm library:                $XPM_LIBS"
+fi
+
+echo "
+The following are set in config.h
+"
+echo "  pty/tty type:               "$rxvt_cv_ptys
+if test x$support_utmp != xyes; then
+  echo "  utmp support:               disabled"
+  echo
+else
+  echo "  utmp support:               enabled
+  utmp file:                  $rxvt_cv_path_utmp
+  utmpx file:                 $rxvt_cv_path_utmpx
+  wtmp file:                  $rxvt_cv_path_wtmp
+  wtmpx file:                 $rxvt_cv_path_wtmpx
+  lastlog file:               $rxvt_cv_path_lastlog
+  ttys/ttytab file:           $rxvt_cv_path_ttytab
+  embedded perl:              $support_perl"
+  echo
+fi
+if test x$term != x; then
+  echo "  set TERM to:                $term"
+fi
+if test x$terminfo != x; then
+  echo "  set TERMINFO to:            $terminfo"
+fi
+echo "  default resource name:      $RESNAME"
+echo "  resource class:             $RESCLASS"
+if test x$RESFALLBACK != x; then
+   echo "  resource class fallback:    $RESFALLBACK"
+fi
+echo
+if test x$rxvt_cv_ptys = xUNKNOWN; then
+  echo ".----------------------------------------------------------------."
+  echo ". WARNING: could not determine pty/tty type.  Do not build until ."
+  echo ".          the appropriate PTYS_ARE_* is defined in config.h     ."
+  echo ".----------------------------------------------------------------."
+fi
+if test x$support_xpm = xneedsmanualspecification; then
+  echo ".----------------------------------------------------------------."
+  echo ". WARNING: --enable-xpm-background was specified however the     ."
+  echo ".          XPM includes files and libraries could not be found.  ."
+  echo ".          XPM backgrounds are now being DISABLED!  If you want  ."
+  echo ".          to use them you should rerun   configure   with the   ."
+  echo ".          appropriate --with-xpm-includes=/path/to/xpm/includes ."
+  echo ".          and --with-xpm-library=/path/to/xpm/library lines.    ."
+  echo ".----------------------------------------------------------------."
+fi
+if test x$support_xim = xyes -a x$rxvt_cv_func_xlocale = xno; then
+  echo ".----------------------------------------------------------------."
+  echo ". WARNING: --enable-xim was specified however the locale support ."
+  echo ".          functions could not be found.                         ."
+  echo ".          XIM is now being DISABLED!                            ."
+  echo ".----------------------------------------------------------------."
+fi
+
+echo "  *** Optionally check src/feature.h for further options ***"
+echo
+
+echo ".----------------------------------------------------------------."
+echo ". NOTE: some features are disabled by default, try               ."
+echo ". configure --help to get an idea of the optional features,      ."
+echo ". or read ./README.configure                                     ."
+echo ".                                                                ."
+echo ". The script ./reconf gives a reasonable baseline, try it if     ."
+echo ". you do not want to read documentation and still want some      ."
+echo ". useful features.                                               ."
+echo ".----------------------------------------------------------------."
+echo
+

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