--- rxvt-unicode/configure	2011/11/16 20:22:12	1.148
+++ rxvt-unicode/configure	2011/11/27 15:18:44	1.149
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.67.
+# Generated by GNU Autoconf 2.68.
 #
 #
 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -89,6 +89,7 @@
 IFS=" ""	$as_nl"
 
 # Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
 case $0 in #((
   *[\\/]* ) as_myself=$0 ;;
   *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -214,11 +215,18 @@
   # We cannot yet assume a decent shell, so we have to provide a
 	# neutralization value for shells without unset; and this also
 	# works around shells that cannot unset nonexistent variables.
+	# Preserve -v and -x to the replacement shell.
 	BASH_ENV=/dev/null
 	ENV=/dev/null
 	(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
 	export CONFIG_SHELL
-	exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
+	case $- in # ((((
+	  *v*x* | *x*v* ) as_opts=-vx ;;
+	  *v* ) as_opts=-v ;;
+	  *x* ) as_opts=-x ;;
+	  * ) as_opts= ;;
+	esac
+	exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
 fi
 
     if test x$as_have_required = xno; then :
@@ -1147,7 +1155,7 @@
     $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
     expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
       $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
-    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
     ;;
 
   esac
@@ -1491,7 +1499,7 @@
 if $ac_init_version; then
   cat <<\_ACEOF
 configure
-generated by GNU Autoconf 2.67
+generated by GNU Autoconf 2.68
 
 Copyright (C) 2010 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
@@ -1537,7 +1545,7 @@
 
 	ac_retval=1
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_compile
@@ -1575,7 +1583,7 @@
 
 	ac_retval=1
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_cxx_try_compile
@@ -1612,7 +1620,7 @@
 
     ac_retval=1
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_cpp
@@ -1625,10 +1633,10 @@
 ac_fn_c_check_header_mongrel ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  if eval "test \"\${$3+set}\"" = set; then :
+  if eval \${$3+:} false; then :
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 fi
 eval ac_res=\$$3
@@ -1691,7 +1699,7 @@
 esac
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   eval "$3=\$ac_header_compiler"
@@ -1700,7 +1708,7 @@
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_header_mongrel
 
@@ -1741,7 +1749,7 @@
        ac_retval=$ac_status
 fi
   rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_run
@@ -1755,7 +1763,7 @@
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -1773,7 +1781,7 @@
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_check_header_compile
 
@@ -1818,7 +1826,7 @@
   # interfere with the next link command; also delete a directory that is
   # left behind by Apple's compiler.  We do this before executing the actions.
   rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_c_try_link
@@ -1864,7 +1872,7 @@
   # interfere with the next link command; also delete a directory that is
   # left behind by Apple's compiler.  We do this before executing the actions.
   rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_cxx_try_link
@@ -1901,7 +1909,7 @@
 
     ac_retval=1
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_cxx_try_cpp
@@ -1914,10 +1922,10 @@
 ac_fn_cxx_check_header_mongrel ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  if eval "test \"\${$3+set}\"" = set; then :
+  if eval \${$3+:} false; then :
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 fi
 eval ac_res=\$$3
@@ -1980,7 +1988,7 @@
 esac
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   eval "$3=\$ac_header_compiler"
@@ -1989,7 +1997,7 @@
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
 fi
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_cxx_check_header_mongrel
 
@@ -2001,7 +2009,7 @@
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -2056,7 +2064,7 @@
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_cxx_check_func
 
@@ -2069,7 +2077,7 @@
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
 $as_echo_n "checking for $2... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   eval "$3=no"
@@ -2110,7 +2118,7 @@
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_cxx_check_type
 
@@ -2123,7 +2131,7 @@
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for int$2_t" >&5
 $as_echo_n "checking for int$2_t... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   eval "$3=no"
@@ -2184,7 +2192,7 @@
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_find_intX_t
 
@@ -2197,7 +2205,7 @@
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for uint$2_t" >&5
 $as_echo_n "checking for uint$2_t... " >&6; }
-if eval "test \"\${$3+set}\"" = set; then :
+if eval \${$3+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   eval "$3=no"
@@ -2237,7 +2245,7 @@
 eval ac_res=\$$3
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_c_find_uintX_t
 
@@ -2278,7 +2286,7 @@
        ac_retval=$ac_status
 fi
   rm -rf conftest.dSYM conftest_ipa8_conftest.oo
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
 } # ac_fn_cxx_try_run
@@ -2287,7 +2295,7 @@
 running configure, to aid debugging if configure makes a mistake.
 
 It was created by $as_me, which was
-generated by GNU Autoconf 2.67.  Invocation command line was
+generated by GNU Autoconf 2.68.  Invocation command line was
 
   $ $0 $@
 
@@ -2545,7 +2553,7 @@
       || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "failed to load site script $ac_site_file
-See \`config.log' for more details" "$LINENO" 5 ; }
+See \`config.log' for more details" "$LINENO" 5; }
   fi
 done
 
@@ -2674,7 +2682,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
 $as_echo_n "checking build system type... " >&6; }
-if test "${ac_cv_build+set}" = set; then :
+if ${ac_cv_build+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_build_alias=$build_alias
@@ -2690,7 +2698,7 @@
 $as_echo "$ac_cv_build" >&6; }
 case $ac_cv_build in
 *-*-*) ;;
-*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5 ;;
+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
 esac
 build=$ac_cv_build
 ac_save_IFS=$IFS; IFS='-'
@@ -2708,7 +2716,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
 $as_echo_n "checking host system type... " >&6; }
-if test "${ac_cv_host+set}" = set; then :
+if ${ac_cv_host+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test "x$host_alias" = x; then
@@ -2723,7 +2731,7 @@
 $as_echo "$ac_cv_host" >&6; }
 case $ac_cv_host in
 *-*-*) ;;
-*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5 ;;
+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
 esac
 host=$ac_cv_host
 ac_save_IFS=$IFS; IFS='-'
@@ -2759,7 +2767,7 @@
 set dummy ${ac_tool_prefix}gcc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CC"; then
@@ -2799,7 +2807,7 @@
 set dummy gcc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$ac_ct_CC"; then
@@ -2852,7 +2860,7 @@
 set dummy ${ac_tool_prefix}cc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CC"; then
@@ -2892,7 +2900,7 @@
 set dummy cc; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CC"; then
@@ -2951,7 +2959,7 @@
 set dummy $ac_tool_prefix$ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CC+set}" = set; then :
+if ${ac_cv_prog_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CC"; then
@@ -2995,7 +3003,7 @@
 set dummy $ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$ac_ct_CC"; then
@@ -3050,7 +3058,7 @@
 test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "no acceptable C compiler found in \$PATH
-See \`config.log' for more details" "$LINENO" 5 ; }
+See \`config.log' for more details" "$LINENO" 5; }
 
 # Provide some information about the compiler.
 $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
@@ -3165,7 +3173,7 @@
 { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "C compiler cannot create executables
-See \`config.log' for more details" "$LINENO" 5 ; }
+See \`config.log' for more details" "$LINENO" 5; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
@@ -3208,7 +3216,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of executables: cannot compile and link
-See \`config.log' for more details" "$LINENO" 5 ; }
+See \`config.log' for more details" "$LINENO" 5; }
 fi
 rm -f conftest conftest$ac_cv_exeext
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
@@ -3267,7 +3275,7 @@
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot run C compiled programs.
 If you meant to cross compile, use \`--host'.
-See \`config.log' for more details" "$LINENO" 5 ; }
+See \`config.log' for more details" "$LINENO" 5; }
     fi
   fi
 fi
@@ -3278,7 +3286,7 @@
 ac_clean_files=$ac_clean_files_save
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
 $as_echo_n "checking for suffix of object files... " >&6; }
-if test "${ac_cv_objext+set}" = set; then :
+if ${ac_cv_objext+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3319,7 +3327,7 @@
 { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of object files: cannot compile
-See \`config.log' for more details" "$LINENO" 5 ; }
+See \`config.log' for more details" "$LINENO" 5; }
 fi
 rm -f conftest.$ac_cv_objext conftest.$ac_ext
 fi
@@ -3329,7 +3337,7 @@
 ac_objext=$OBJEXT
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
 $as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
-if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+if ${ac_cv_c_compiler_gnu+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3366,7 +3374,7 @@
 ac_save_CFLAGS=$CFLAGS
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
 $as_echo_n "checking whether $CC accepts -g... " >&6; }
-if test "${ac_cv_prog_cc_g+set}" = set; then :
+if ${ac_cv_prog_cc_g+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_save_c_werror_flag=$ac_c_werror_flag
@@ -3444,7 +3452,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
 $as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
-if test "${ac_cv_prog_cc_c89+set}" = set; then :
+if ${ac_cv_prog_cc_c89+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_cv_prog_cc_c89=no
@@ -3555,7 +3563,7 @@
 set dummy $ac_tool_prefix$ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_CXX+set}" = set; then :
+if ${ac_cv_prog_CXX+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$CXX"; then
@@ -3599,7 +3607,7 @@
 set dummy $ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_prog_ac_ct_CXX+set}" = set; then :
+if ${ac_cv_prog_ac_ct_CXX+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -n "$ac_ct_CXX"; then
@@ -3677,7 +3685,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C++ compiler" >&5
 $as_echo_n "checking whether we are using the GNU C++ compiler... " >&6; }
-if test "${ac_cv_cxx_compiler_gnu+set}" = set; then :
+if ${ac_cv_cxx_compiler_gnu+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -3714,7 +3722,7 @@
 ac_save_CXXFLAGS=$CXXFLAGS
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX accepts -g" >&5
 $as_echo_n "checking whether $CXX accepts -g... " >&6; }
-if test "${ac_cv_prog_cxx_g+set}" = set; then :
+if ${ac_cv_prog_cxx_g+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_save_cxx_werror_flag=$ac_cxx_werror_flag
@@ -3808,7 +3816,7 @@
   CPP=
 fi
 if test -z "$CPP"; then
-  if test "${ac_cv_prog_CPP+set}" = set; then :
+  if ${ac_cv_prog_CPP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
       # Double quotes because CPP needs to be expanded
@@ -3924,7 +3932,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details" "$LINENO" 5 ; }
+See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 ac_ext=c
@@ -3950,7 +3958,7 @@
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
 $as_echo_n "checking for a BSD-compatible install... " >&6; }
 if test -z "$INSTALL"; then
-if test "${ac_cv_path_install+set}" = set; then :
+if ${ac_cv_path_install+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -4031,7 +4039,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
 $as_echo_n "checking for grep that handles long lines and -e... " >&6; }
-if test "${ac_cv_path_GREP+set}" = set; then :
+if ${ac_cv_path_GREP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test -z "$GREP"; then
@@ -4094,7 +4102,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
 $as_echo_n "checking for egrep... " >&6; }
-if test "${ac_cv_path_EGREP+set}" = set; then :
+if ${ac_cv_path_EGREP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
@@ -4161,7 +4169,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
 $as_echo_n "checking for ANSI C header files... " >&6; }
-if test "${ac_cv_header_stdc+set}" = set; then :
+if ${ac_cv_header_stdc+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -4290,7 +4298,7 @@
 
 
   ac_fn_c_check_header_mongrel "$LINENO" "minix/config.h" "ac_cv_header_minix_config_h" "$ac_includes_default"
-if test "x$ac_cv_header_minix_config_h" = x""yes; then :
+if test "x$ac_cv_header_minix_config_h" = xyes; then :
   MINIX=yes
 else
   MINIX=
@@ -4312,7 +4320,7 @@
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5
 $as_echo_n "checking whether it is safe to define __EXTENSIONS__... " >&6; }
-if test "${ac_cv_safe_to_define___extensions__+set}" = set; then :
+if ${ac_cv_safe_to_define___extensions__+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -4353,7 +4361,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing strerror" >&5
 $as_echo_n "checking for library containing strerror... " >&6; }
-if test "${ac_cv_search_strerror+set}" = set; then :
+if ${ac_cv_search_strerror+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -4387,11 +4395,11 @@
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_strerror+set}" = set; then :
+  if ${ac_cv_search_strerror+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_strerror+set}" = set; then :
+if ${ac_cv_search_strerror+:} false; then :
 
 else
   ac_cv_search_strerror=no
@@ -4489,7 +4497,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing setlocale" >&5
 $as_echo_n "checking for library containing setlocale... " >&6; }
-if test "${ac_cv_search_setlocale+set}" = set; then :
+if ${ac_cv_search_setlocale+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -4523,11 +4531,11 @@
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_setlocale+set}" = set; then :
+  if ${ac_cv_search_setlocale+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_setlocale+set}" = set; then :
+if ${ac_cv_search_setlocale+:} false; then :
 
 else
   ac_cv_search_setlocale=no
@@ -4546,7 +4554,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing gethostbyname" >&5
 $as_echo_n "checking for library containing gethostbyname... " >&6; }
-if test "${ac_cv_search_gethostbyname+set}" = set; then :
+if ${ac_cv_search_gethostbyname+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -4580,11 +4588,11 @@
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_gethostbyname+set}" = set; then :
+  if ${ac_cv_search_gethostbyname+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_gethostbyname+set}" = set; then :
+if ${ac_cv_search_gethostbyname+:} false; then :
 
 else
   ac_cv_search_gethostbyname=no
@@ -4602,7 +4610,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing socket" >&5
 $as_echo_n "checking for library containing socket... " >&6; }
-if test "${ac_cv_search_socket+set}" = set; then :
+if ${ac_cv_search_socket+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -4636,11 +4644,11 @@
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_socket+set}" = set; then :
+  if ${ac_cv_search_socket+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_socket+set}" = set; then :
+if ${ac_cv_search_socket+:} false; then :
 
 else
   ac_cv_search_socket=no
@@ -5157,7 +5165,7 @@
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C++ preprocessor" >&5
 $as_echo_n "checking how to run the C++ preprocessor... " >&6; }
 if test -z "$CXXCPP"; then
-  if test "${ac_cv_prog_CXXCPP+set}" = set; then :
+  if ${ac_cv_prog_CXXCPP+:} false; then :
   $as_echo_n "(cached) " >&6
 else
       # Double quotes because CXXCPP needs to be expanded
@@ -5273,7 +5281,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "C++ preprocessor \"$CXXCPP\" fails sanity check
-See \`config.log' for more details" "$LINENO" 5 ; }
+See \`config.log' for more details" "$LINENO" 5; }
 fi
 
 ac_ext=cpp
@@ -5313,7 +5321,7 @@
 for ac_func in clock_gettime
 do :
   ac_fn_cxx_check_func "$LINENO" "clock_gettime" "ac_cv_func_clock_gettime"
-if test "x$ac_cv_func_clock_gettime" = x""yes; then :
+if test "x$ac_cv_func_clock_gettime" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_CLOCK_GETTIME 1
 _ACEOF
@@ -5353,7 +5361,7 @@
    if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_gettime in -lrt" >&5
 $as_echo_n "checking for clock_gettime in -lrt... " >&6; }
-if test "${ac_cv_lib_rt_clock_gettime+set}" = set; then :
+if ${ac_cv_lib_rt_clock_gettime+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -5387,7 +5395,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_gettime" >&5
 $as_echo "$ac_cv_lib_rt_clock_gettime" >&6; }
-if test "x$ac_cv_lib_rt_clock_gettime" = x""yes; then :
+if test "x$ac_cv_lib_rt_clock_gettime" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_LIBRT 1
 _ACEOF
@@ -5400,7 +5408,7 @@
       for ac_func in clock_gettime
 do :
   ac_fn_cxx_check_func "$LINENO" "clock_gettime" "ac_cv_func_clock_gettime"
-if test "x$ac_cv_func_clock_gettime" = x""yes; then :
+if test "x$ac_cv_func_clock_gettime" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_CLOCK_GETTIME 1
 _ACEOF
@@ -5417,7 +5425,7 @@
 for ac_func in nanosleep
 do :
   ac_fn_cxx_check_func "$LINENO" "nanosleep" "ac_cv_func_nanosleep"
-if test "x$ac_cv_func_nanosleep" = x""yes; then :
+if test "x$ac_cv_func_nanosleep" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_NANOSLEEP 1
 _ACEOF
@@ -5427,7 +5435,7 @@
    if test -z "$LIBEV_M4_AVOID_LIBRT"; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for nanosleep in -lrt" >&5
 $as_echo_n "checking for nanosleep in -lrt... " >&6; }
-if test "${ac_cv_lib_rt_nanosleep+set}" = set; then :
+if ${ac_cv_lib_rt_nanosleep+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -5461,7 +5469,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_nanosleep" >&5
 $as_echo "$ac_cv_lib_rt_nanosleep" >&6; }
-if test "x$ac_cv_lib_rt_nanosleep" = x""yes; then :
+if test "x$ac_cv_lib_rt_nanosleep" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_LIBRT 1
 _ACEOF
@@ -5474,7 +5482,7 @@
       for ac_func in nanosleep
 do :
   ac_fn_cxx_check_func "$LINENO" "nanosleep" "ac_cv_func_nanosleep"
-if test "x$ac_cv_func_nanosleep" = x""yes; then :
+if test "x$ac_cv_func_nanosleep" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_NANOSLEEP 1
 _ACEOF
@@ -5493,7 +5501,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing floor" >&5
 $as_echo_n "checking for library containing floor... " >&6; }
-if test "${ac_cv_search_floor+set}" = set; then :
+if ${ac_cv_search_floor+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -5527,11 +5535,11 @@
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_floor+set}" = set; then :
+  if ${ac_cv_search_floor+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_floor+set}" = set; then :
+if ${ac_cv_search_floor+:} false; then :
 
 else
   ac_cv_search_floor=no
@@ -5557,7 +5565,7 @@
 set dummy tic; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_TIC+set}" = set; then :
+if ${ac_cv_path_TIC+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $TIC in
@@ -5610,8 +5618,8 @@
   have_x=disabled
 else
   case $x_includes,$x_libraries in #(
-    *\'*) as_fn_error $? "cannot use X directory names containing '" "$LINENO" 5 ;; #(
-    *,NONE | NONE,*) if test "${ac_cv_have_x+set}" = set; then :
+    *\'*) as_fn_error $? "cannot use X directory names containing '" "$LINENO" 5;; #(
+    *,NONE | NONE,*) if ${ac_cv_have_x+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   # One or both of the vars are not set, and there is no cached value.
@@ -5888,7 +5896,7 @@
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dnet_ntoa in -ldnet" >&5
 $as_echo_n "checking for dnet_ntoa in -ldnet... " >&6; }
-if test "${ac_cv_lib_dnet_dnet_ntoa+set}" = set; then :
+if ${ac_cv_lib_dnet_dnet_ntoa+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -5922,14 +5930,14 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dnet_dnet_ntoa" >&5
 $as_echo "$ac_cv_lib_dnet_dnet_ntoa" >&6; }
-if test "x$ac_cv_lib_dnet_dnet_ntoa" = x""yes; then :
+if test "x$ac_cv_lib_dnet_dnet_ntoa" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"
 fi
 
     if test $ac_cv_lib_dnet_dnet_ntoa = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dnet_ntoa in -ldnet_stub" >&5
 $as_echo_n "checking for dnet_ntoa in -ldnet_stub... " >&6; }
-if test "${ac_cv_lib_dnet_stub_dnet_ntoa+set}" = set; then :
+if ${ac_cv_lib_dnet_stub_dnet_ntoa+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -5963,7 +5971,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dnet_stub_dnet_ntoa" >&5
 $as_echo "$ac_cv_lib_dnet_stub_dnet_ntoa" >&6; }
-if test "x$ac_cv_lib_dnet_stub_dnet_ntoa" = x""yes; then :
+if test "x$ac_cv_lib_dnet_stub_dnet_ntoa" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"
 fi
 
@@ -5982,14 +5990,14 @@
     # The functions gethostbyname, getservbyname, and inet_addr are
     # in -lbsd on LynxOS 3.0.1/i386, according to Lars Hecking.
     ac_fn_cxx_check_func "$LINENO" "gethostbyname" "ac_cv_func_gethostbyname"
-if test "x$ac_cv_func_gethostbyname" = x""yes; then :
+if test "x$ac_cv_func_gethostbyname" = xyes; then :
 
 fi
 
     if test $ac_cv_func_gethostbyname = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyname in -lnsl" >&5
 $as_echo_n "checking for gethostbyname in -lnsl... " >&6; }
-if test "${ac_cv_lib_nsl_gethostbyname+set}" = set; then :
+if ${ac_cv_lib_nsl_gethostbyname+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -6023,14 +6031,14 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nsl_gethostbyname" >&5
 $as_echo "$ac_cv_lib_nsl_gethostbyname" >&6; }
-if test "x$ac_cv_lib_nsl_gethostbyname" = x""yes; then :
+if test "x$ac_cv_lib_nsl_gethostbyname" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl"
 fi
 
       if test $ac_cv_lib_nsl_gethostbyname = no; then
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gethostbyname in -lbsd" >&5
 $as_echo_n "checking for gethostbyname in -lbsd... " >&6; }
-if test "${ac_cv_lib_bsd_gethostbyname+set}" = set; then :
+if ${ac_cv_lib_bsd_gethostbyname+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -6064,7 +6072,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_bsd_gethostbyname" >&5
 $as_echo "$ac_cv_lib_bsd_gethostbyname" >&6; }
-if test "x$ac_cv_lib_bsd_gethostbyname" = x""yes; then :
+if test "x$ac_cv_lib_bsd_gethostbyname" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lbsd"
 fi
 
@@ -6079,14 +6087,14 @@
     # must be given before -lnsl if both are needed.  We assume that
     # if connect needs -lnsl, so does gethostbyname.
     ac_fn_cxx_check_func "$LINENO" "connect" "ac_cv_func_connect"
-if test "x$ac_cv_func_connect" = x""yes; then :
+if test "x$ac_cv_func_connect" = xyes; then :
 
 fi
 
     if test $ac_cv_func_connect = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for connect in -lsocket" >&5
 $as_echo_n "checking for connect in -lsocket... " >&6; }
-if test "${ac_cv_lib_socket_connect+set}" = set; then :
+if ${ac_cv_lib_socket_connect+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -6120,7 +6128,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_connect" >&5
 $as_echo "$ac_cv_lib_socket_connect" >&6; }
-if test "x$ac_cv_lib_socket_connect" = x""yes; then :
+if test "x$ac_cv_lib_socket_connect" = xyes; then :
   X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS"
 fi
 
@@ -6128,14 +6136,14 @@
 
     # Guillermo Gomez says -lposix is necessary on A/UX.
     ac_fn_cxx_check_func "$LINENO" "remove" "ac_cv_func_remove"
-if test "x$ac_cv_func_remove" = x""yes; then :
+if test "x$ac_cv_func_remove" = xyes; then :
 
 fi
 
     if test $ac_cv_func_remove = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for remove in -lposix" >&5
 $as_echo_n "checking for remove in -lposix... " >&6; }
-if test "${ac_cv_lib_posix_remove+set}" = set; then :
+if ${ac_cv_lib_posix_remove+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -6169,7 +6177,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_posix_remove" >&5
 $as_echo "$ac_cv_lib_posix_remove" >&6; }
-if test "x$ac_cv_lib_posix_remove" = x""yes; then :
+if test "x$ac_cv_lib_posix_remove" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix"
 fi
 
@@ -6177,14 +6185,14 @@
 
     # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay.
     ac_fn_cxx_check_func "$LINENO" "shmat" "ac_cv_func_shmat"
-if test "x$ac_cv_func_shmat" = x""yes; then :
+if test "x$ac_cv_func_shmat" = xyes; then :
 
 fi
 
     if test $ac_cv_func_shmat = no; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shmat in -lipc" >&5
 $as_echo_n "checking for shmat in -lipc... " >&6; }
-if test "${ac_cv_lib_ipc_shmat+set}" = set; then :
+if ${ac_cv_lib_ipc_shmat+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -6218,7 +6226,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ipc_shmat" >&5
 $as_echo "$ac_cv_lib_ipc_shmat" >&6; }
-if test "x$ac_cv_lib_ipc_shmat" = x""yes; then :
+if test "x$ac_cv_lib_ipc_shmat" = xyes; then :
   X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc"
 fi
 
@@ -6236,7 +6244,7 @@
   # John Interrante, Karl Berry
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for IceConnectionNumber in -lICE" >&5
 $as_echo_n "checking for IceConnectionNumber in -lICE... " >&6; }
-if test "${ac_cv_lib_ICE_IceConnectionNumber+set}" = set; then :
+if ${ac_cv_lib_ICE_IceConnectionNumber+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -6270,7 +6278,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ICE_IceConnectionNumber" >&5
 $as_echo "$ac_cv_lib_ICE_IceConnectionNumber" >&6; }
-if test "x$ac_cv_lib_ICE_IceConnectionNumber" = x""yes; then :
+if test "x$ac_cv_lib_ICE_IceConnectionNumber" = xyes; then :
   X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"
 fi
 
@@ -6290,7 +6298,7 @@
 set dummy pkg-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $PKG_CONFIG in
@@ -6364,7 +6372,7 @@
 set dummy pkg-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $PKG_CONFIG in
@@ -6436,7 +6444,7 @@
 set dummy afterimage-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_afterimage_config+set}" = set; then :
+if ${ac_cv_path_afterimage_config+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $afterimage_config in
@@ -6536,7 +6544,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for XLIB_ILLEGAL_ACCESS" >&5
 $as_echo_n "checking for XLIB_ILLEGAL_ACCESS... " >&6; }
-if test "${rxvt_cv_xlib_illegal_access+set}" = set; then :
+if ${rxvt_cv_xlib_illegal_access+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -6573,7 +6581,7 @@
 fi
 
 ac_fn_cxx_check_type "$LINENO" "mode_t" "ac_cv_type_mode_t" "$ac_includes_default"
-if test "x$ac_cv_type_mode_t" = x""yes; then :
+if test "x$ac_cv_type_mode_t" = xyes; then :
 
 else
 
@@ -6584,7 +6592,7 @@
 fi
 
 ac_fn_cxx_check_type "$LINENO" "pid_t" "ac_cv_type_pid_t" "$ac_includes_default"
-if test "x$ac_cv_type_pid_t" = x""yes; then :
+if test "x$ac_cv_type_pid_t" = xyes; then :
 
 else
 
@@ -6596,7 +6604,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for uid_t in sys/types.h" >&5
 $as_echo_n "checking for uid_t in sys/types.h... " >&6; }
-if test "${ac_cv_type_uid_t+set}" = set; then :
+if ${ac_cv_type_uid_t+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -6676,7 +6684,7 @@
 for ac_func in unsetenv
 do :
   ac_fn_cxx_check_func "$LINENO" "unsetenv" "ac_cv_func_unsetenv"
-if test "x$ac_cv_func_unsetenv" = x""yes; then :
+if test "x$ac_cv_func_unsetenv" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_UNSETENV 1
 _ACEOF
@@ -6750,7 +6758,7 @@
 for ac_header in lastlog.h
 do :
   ac_fn_cxx_check_header_mongrel "$LINENO" "lastlog.h" "ac_cv_header_lastlog_h" "$ac_includes_default"
-if test "x$ac_cv_header_lastlog_h" = x""yes; then :
+if test "x$ac_cv_header_lastlog_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_LASTLOG_H 1
 _ACEOF
@@ -6764,7 +6772,7 @@
 for ac_header in utmp.h
 do :
   ac_fn_cxx_check_header_mongrel "$LINENO" "utmp.h" "ac_cv_header_utmp_h" "$ac_includes_default"
-if test "x$ac_cv_header_utmp_h" = x""yes; then :
+if test "x$ac_cv_header_utmp_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_UTMP_H 1
 _ACEOF
@@ -6773,7 +6781,7 @@
 #include <utmp.h>
 
 "
-if test "x$ac_cv_type_struct_utmp" = x""yes; then :
+if test "x$ac_cv_type_struct_utmp" = xyes; then :
 
 cat >>confdefs.h <<_ACEOF
 #define HAVE_STRUCT_UTMP 1
@@ -6793,7 +6801,7 @@
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2.$3" >&5
 $as_echo_n "checking for $2.$3... " >&6; }
-if eval "test \"\${$4+set}\"" = set; then :
+if eval \${$4+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -6837,7 +6845,7 @@
 eval ac_res=\$$4
 	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
 $as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
 
 } # ac_fn_cxx_check_member
 ac_fn_cxx_check_member "$LINENO" "struct utmp" "ut_host" "ac_cv_member_struct_utmp_ut_host" "
@@ -6845,7 +6853,7 @@
 #include <utmp.h>
 
 "
-if test "x$ac_cv_member_struct_utmp_ut_host" = x""yes; then :
+if test "x$ac_cv_member_struct_utmp_ut_host" = xyes; then :
 
 $as_echo "#define HAVE_UTMP_HOST 1" >>confdefs.h
 
@@ -6857,7 +6865,7 @@
 #include <utmp.h>
 
 "
-if test "x$ac_cv_member_struct_utmp_ut_pid" = x""yes; then :
+if test "x$ac_cv_member_struct_utmp_ut_pid" = xyes; then :
 
 $as_echo "#define HAVE_UTMP_PID 1" >>confdefs.h
 
@@ -6872,7 +6880,7 @@
 for ac_header in utmpx.h
 do :
   ac_fn_cxx_check_header_mongrel "$LINENO" "utmpx.h" "ac_cv_header_utmpx_h" "$ac_includes_default"
-if test "x$ac_cv_header_utmpx_h" = x""yes; then :
+if test "x$ac_cv_header_utmpx_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_UTMPX_H 1
 _ACEOF
@@ -6881,7 +6889,7 @@
 #include <utmpx.h>
 
 "
-if test "x$ac_cv_type_struct_utmpx" = x""yes; then :
+if test "x$ac_cv_type_struct_utmpx" = xyes; then :
 
 cat >>confdefs.h <<_ACEOF
 #define HAVE_STRUCT_UTMPX 1
@@ -6896,7 +6904,7 @@
 #include <utmpx.h>
 
 "
-if test "x$ac_cv_member_struct_utmpx_ut_host" = x""yes; then :
+if test "x$ac_cv_member_struct_utmpx_ut_host" = xyes; then :
 
 $as_echo "#define HAVE_UTMPX_HOST 1" >>confdefs.h
 
@@ -6908,7 +6916,7 @@
 #include <utmpx.h>
 
 "
-if test "x$ac_cv_member_struct_utmpx_ut_session" = x""yes; then :
+if test "x$ac_cv_member_struct_utmpx_ut_session" = xyes; then :
 
 $as_echo "#define HAVE_UTMPX_SESSION 1" >>confdefs.h
 
@@ -6927,7 +6935,7 @@
 #endif
 
 "
-if test "x$ac_cv_type_struct_lastlog" = x""yes; then :
+if test "x$ac_cv_type_struct_lastlog" = xyes; then :
 
 cat >>confdefs.h <<_ACEOF
 #define HAVE_STRUCT_LASTLOG 1
@@ -6945,7 +6953,7 @@
 #endif
 
 "
-if test "x$ac_cv_type_struct_lastlogx" = x""yes; then :
+if test "x$ac_cv_type_struct_lastlogx" = xyes; then :
 
 cat >>confdefs.h <<_ACEOF
 #define HAVE_STRUCT_LASTLOGX 1
@@ -6956,309 +6964,145 @@
 
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking where utmp is located" >&5
-$as_echo_n "checking where utmp is located... " >&6; }
-if test "${pt_cv_path_utmp+set}" = set; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a fallback location of utmp" >&5
+$as_echo_n "checking for a fallback location of utmp... " >&6; }
+if ${pt_cv_path_utmp+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test "$cross_compiling" = yes; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define UTMP_FILE in config.h manually" >&5
-$as_echo "$as_me: WARNING: Define UTMP_FILE in config.h manually" >&2;}
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-
-#include <sys/types.h>
-#include <utmp.h>
 
-int main()
-{
-    const char **path, *list[] = { "/var/run/utmp", "/var/adm/utmp", "/etc/utmp", "/usr/etc/utmp", "/usr/adm/utmp", NULL };
-    FILE *f = fopen("conftestval", "w");
-    if (!f) return 1;
-#ifdef UTMP_FILE
-    fprintf(f, "%s\n", UTMP_FILE);
-#elif defined(_PATH_UTMP)
-    fprintf(f, "%s\n", _PATH_UTMP);
-#else
-    for (path = list; *path; path++) {
-        struct stat st;
-        if (stat(*path, &st) == 0) {
-            fprintf(f, "%s\n", *path);
-            break;
-        }
-    }
-#endif
-    return fclose(f) != 0;
-}
-_ACEOF
-if ac_fn_cxx_try_run "$LINENO"; then :
-  pt_cv_path_utmp=`cat conftestval`
-else
-  pt_cv_path_utmp=
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "$cross_compiling" != yes; then
+  for file in "/var/run/utmp" "/var/adm/utmp" "/etc/utmp" "/usr/etc/utmp" "/usr/adm/utmp"; do
+    if test -f "$file"; then
+      pt_cv_path_utmp=$file
+      break
+    fi
+  done
 fi
-
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $pt_cv_path_utmp" >&5
 $as_echo "$pt_cv_path_utmp" >&6; }
 if test x$pt_cv_path_utmp != x; then
 
 cat >>confdefs.h <<_ACEOF
-#define UTMP_FILE "$pt_cv_path_utmp"
+#define PT_UTMP_FILE "$pt_cv_path_utmp"
 _ACEOF
 
+elif test "$cross_compiling" = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define PT_UTMP_FILE in config.h manually" >&5
+$as_echo "$as_me: WARNING: Define PT_UTMP_FILE in config.h manually" >&2;}
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking where wtmp is located" >&5
-$as_echo_n "checking where wtmp is located... " >&6; }
-if test "${pt_cv_path_wtmp+set}" = set; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a fallback location of wtmp" >&5
+$as_echo_n "checking for a fallback location of wtmp... " >&6; }
+if ${pt_cv_path_wtmp+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test "$cross_compiling" = yes; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define WTMP_FILE in config.h manually" >&5
-$as_echo "$as_me: WARNING: Define WTMP_FILE in config.h manually" >&2;}
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-
-#include <sys/types.h>
-#ifdef HAVE_UTMP_H
-#include <utmp.h>
-#endif
 
-int main()
-{
-    const char **path, *list[] = { "/var/log/wtmp", "/var/adm/wtmp", "/etc/wtmp", "/usr/etc/wtmp", "/usr/adm/wtmp", NULL };
-    FILE *f = fopen("conftestval", "w");
-    if (!f) return 1;
-#ifdef WTMP_FILE
-    fprintf(f, "%s\n", WTMP_FILE);
-#elif defined(_PATH_WTMP)
-    fprintf(f, "%s\n", _PATH_WTMP);
-#else
-    for (path = list; *path; path++) {
-        struct stat st;
-        if (stat(*path, &st) == 0) {
-            fprintf(f, "%s\n", *path);
-            break;
-        }
-    }
-#endif
-    return fclose(f) != 0;
-}
-_ACEOF
-if ac_fn_cxx_try_run "$LINENO"; then :
-  pt_cv_path_wtmp=`cat conftestval`
-else
-  pt_cv_path_wtmp=
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "$cross_compiling" != yes; then
+  for file in "/var/log/wtmp" "/var/adm/wtmp" "/etc/wtmp" "/usr/etc/wtmp" "/usr/adm/wtmp"; do
+    if test -f "$file"; then
+      pt_cv_path_wtmp=$file
+      break
+    fi
+  done
 fi
-
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $pt_cv_path_wtmp" >&5
 $as_echo "$pt_cv_path_wtmp" >&6; }
 if test x$pt_cv_path_wtmp != x; then
 
 cat >>confdefs.h <<_ACEOF
-#define WTMP_FILE "$pt_cv_path_wtmp"
+#define PT_WTMP_FILE "$pt_cv_path_wtmp"
 _ACEOF
 
+elif test "$cross_compiling" = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define PT_WTMP_FILE in config.h manually" >&5
+$as_echo "$as_me: WARNING: Define PT_WTMP_FILE in config.h manually" >&2;}
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking where wtmpx is located" >&5
-$as_echo_n "checking where wtmpx is located... " >&6; }
-if test "${pt_cv_path_wtmpx+set}" = set; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a fallback location of wtmpx" >&5
+$as_echo_n "checking for a fallback location of wtmpx... " >&6; }
+if ${pt_cv_path_wtmpx+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test "$cross_compiling" = yes; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define WTMPX_FILE in config.h manually" >&5
-$as_echo "$as_me: WARNING: Define WTMPX_FILE in config.h manually" >&2;}
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-
-#ifdef HAVE_UTMPX_H
-#include <utmpx.h>
-#endif
 
-int main()
-{
-    const char **path, *list[] = { "/var/log/wtmpx", "/var/adm/wtmpx", NULL };
-    FILE *f = fopen("conftestval", "w");
-    if (!f) return 1;
-#ifdef WTMPX_FILE
-    fprintf(f, "%s\n", WTMPX_FILE);
-#elif defined(_PATH_WTMPX)
-    fprintf(f, "%s\n", _PATH_WTMPX);
-#else
-    for (path = list; *path; path++) {
-        struct stat st;
-        if (stat(*path, &st) == 0) {
-            fprintf(f, "%s\n", *path);
-            break;
-        }
-    }
-#endif
-    return fclose(f) != 0;
-}
-_ACEOF
-if ac_fn_cxx_try_run "$LINENO"; then :
-  pt_cv_path_wtmpx=`cat conftestval`
-else
-  pt_cv_path_wtmpx=
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "$cross_compiling" != yes; then
+  for file in "/var/log/wtmpx" "/var/adm/wtmpx"; do
+    if test -f "$file"; then
+      pt_cv_path_wtmpx=$file
+      break
+    fi
+  done
 fi
-
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $pt_cv_path_wtmpx" >&5
 $as_echo "$pt_cv_path_wtmpx" >&6; }
 if test x$pt_cv_path_wtmpx != x; then
 
 cat >>confdefs.h <<_ACEOF
-#define WTMPX_FILE "$pt_cv_path_wtmpx"
+#define PT_WTMPX_FILE "$pt_cv_path_wtmpx"
 _ACEOF
 
+elif test "$cross_compiling" = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define PT_WTMPX_FILE in config.h manually" >&5
+$as_echo "$as_me: WARNING: Define PT_WTMPX_FILE in config.h manually" >&2;}
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking where lastlog is located" >&5
-$as_echo_n "checking where lastlog is located... " >&6; }
-if test "${pt_cv_path_lastlog+set}" = set; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a fallback location of lastlog" >&5
+$as_echo_n "checking for a fallback location of lastlog... " >&6; }
+if ${pt_cv_path_lastlog+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test "$cross_compiling" = yes; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define LASTLOG_FILE in config.h manually" >&5
-$as_echo "$as_me: WARNING: Define LASTLOG_FILE in config.h manually" >&2;}
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-
-#include <sys/types.h>
-#ifdef HAVE_UTMP_H
-#include <utmp.h>
-#endif
-#ifdef HAVE_LASTLOG_H
-#include <lastlog.h>
-#endif
 
-int main()
-{
-    const char **path, *list[] = { "/var/log/lastlog", NULL };
-    FILE *f = fopen("conftestval", "w");
-    if (!f) return 1;
-#ifdef LASTLOG_FILE
-    fprintf(f, "%s\n", LASTLOG_FILE);
-#elif defined(_PATH_LASTLOG)
-    fprintf(f, "%s\n", _PATH_LASTLOG);
-#else
-    for (path = list; *path; path++) {
-        struct stat st;
-        if (stat(*path, &st) == 0) {
-            fprintf(f, "%s\n", *path);
-            break;
-        }
-    }
-#endif
-    return fclose(f) != 0;
-}
-_ACEOF
-if ac_fn_cxx_try_run "$LINENO"; then :
-  pt_cv_path_lastlog=`cat conftestval`
-else
-  pt_cv_path_lastlog=
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "$cross_compiling" != yes; then
+  for file in "/var/log/lastlog"; do
+    if test -f "$file"; then
+      pt_cv_path_lastlog=$file
+      break
+    fi
+  done
 fi
-
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $pt_cv_path_lastlog" >&5
 $as_echo "$pt_cv_path_lastlog" >&6; }
 if test x$pt_cv_path_lastlog != x; then
 
 cat >>confdefs.h <<_ACEOF
-#define LASTLOG_FILE "$pt_cv_path_lastlog"
+#define PT_LASTLOG_FILE "$pt_cv_path_lastlog"
 _ACEOF
 
+elif test "$cross_compiling" = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define PT_LASTLOG_FILE in config.h manually" >&5
+$as_echo "$as_me: WARNING: Define PT_LASTLOG_FILE in config.h manually" >&2;}
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking where lastlogx is located" >&5
-$as_echo_n "checking where lastlogx is located... " >&6; }
-if test "${pt_cv_path_lastlogx+set}" = set; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a fallback location of lastlogx" >&5
+$as_echo_n "checking for a fallback location of lastlogx... " >&6; }
+if ${pt_cv_path_lastlogx+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test "$cross_compiling" = yes; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define LASTLOGX_FILE in config.h manually" >&5
-$as_echo "$as_me: WARNING: Define LASTLOGX_FILE in config.h manually" >&2;}
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
 
-#ifdef HAVE_UTMPX_H
-#include <utmpx.h>
-#endif
-
-int main()
-{
-    const char **path, *list[] = { "/var/log/lastlogx", "/var/adm/lastlogx", NULL };
-    FILE *f = fopen("conftestval", "w");
-    if (!f) return 1;
-#ifdef LASTLOGX_FILE
-    fprintf(f, "%s\n", LASTLOGX_FILE);
-#elif defined(_PATH_LASTLOGX)
-    fprintf(f, "%s\n", _PATH_LASTLOGX);
-#else
-    for (path = list; *path; path++) {
-        struct stat st;
-        if (stat(*path, &st) == 0) {
-            fprintf(f, "%s\n", *path);
-            break;
-        }
-    }
-#endif
-    return fclose(f) != 0;
-}
-_ACEOF
-if ac_fn_cxx_try_run "$LINENO"; then :
-  pt_cv_path_lastlogx=`cat conftestval`
-else
-  pt_cv_path_lastlogx=
+if test "$cross_compiling" != yes; then
+  for file in "/var/log/lastlogx" "/var/adm/lastlogx"; do
+    if test -f "$file"; then
+      pt_cv_path_lastlogx=$file
+      break
+    fi
+  done
 fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $pt_cv_path_lastlogx" >&5
 $as_echo "$pt_cv_path_lastlogx" >&6; }
 if test x$pt_cv_path_lastlogx != x; then
 
 cat >>confdefs.h <<_ACEOF
-#define LASTLOGX_FILE "$pt_cv_path_lastlogx"
+#define PT_LASTLOGX_FILE "$pt_cv_path_lastlogx"
 _ACEOF
 
+elif test "$cross_compiling" = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Define PT_LASTLOGX_FILE in config.h manually" >&5
+$as_echo "$as_me: WARNING: Define PT_LASTLOGX_FILE in config.h manually" >&2;}
 fi
 
 
@@ -7271,7 +7115,7 @@
 if test x$support_xim = xyes; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working Xlocale" >&5
 $as_echo_n "checking for working Xlocale... " >&6; }
-if test "${rxvt_cv_func_xlocale+set}" = set; then :
+if ${rxvt_cv_func_xlocale+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test "$cross_compiling" = yes; then :
@@ -7309,7 +7153,7 @@
 
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken XIM callback" >&5
 $as_echo_n "checking for broken XIM callback... " >&6; }
-if test "${rxvt_cv_broken_ximcb+set}" = set; then :
+if ${rxvt_cv_broken_ximcb+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -7345,7 +7189,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working X setlocale" >&5
 $as_echo_n "checking for working X setlocale... " >&6; }
-if test "${rxvt_cv_func_xsetlocale+set}" = set; then :
+if ${rxvt_cv_func_xsetlocale+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -7380,7 +7224,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working plain setlocale" >&5
 $as_echo_n "checking for working plain setlocale... " >&6; }
-if test "${rxvt_cv_func_setlocale+set}" = set; then :
+if ${rxvt_cv_func_setlocale+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -7412,7 +7256,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working nl_langinfo" >&5
 $as_echo_n "checking for working nl_langinfo... " >&6; }
-if test "${rxvt_cv_func_nl_langinfo+set}" = set; then :
+if ${rxvt_cv_func_nl_langinfo+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -7445,7 +7289,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for unix-compliant filehandle passing ability" >&5
 $as_echo_n "checking for unix-compliant filehandle passing ability... " >&6; }
-if test "${pt_cv_can_pass_fds+set}" = set; then :
+if ${pt_cv_can_pass_fds+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -7552,9 +7396,9 @@
 done
 
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for UNIX98 ptys" >&5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for UNIX98 ptys" >&5
 $as_echo_n "checking for UNIX98 ptys... " >&6; }
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdlib.h>
 int
@@ -7570,7 +7414,7 @@
 
 $as_echo "#define UNIX98_PTY 1" >>confdefs.h
 
-               { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
@@ -7582,7 +7426,7 @@
 if test -z "$unix98_pty"; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing openpty" >&5
 $as_echo_n "checking for library containing openpty... " >&6; }
-if test "${ac_cv_search_openpty+set}" = set; then :
+if ${ac_cv_search_openpty+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_func_search_save_LIBS=$LIBS
@@ -7616,11 +7460,11 @@
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext
-  if test "${ac_cv_search_openpty+set}" = set; then :
+  if ${ac_cv_search_openpty+:} false; then :
   break
 fi
 done
-if test "${ac_cv_search_openpty+set}" = set; then :
+if ${ac_cv_search_openpty+:} false; then :
 
 else
   ac_cv_search_openpty=no
@@ -7644,7 +7488,7 @@
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for tty group" >&5
 $as_echo_n "checking for tty group... " >&6; }
-if test "${pt_cv_tty_group+set}" = set; then :
+if ${pt_cv_tty_group+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if test "$cross_compiling" = yes; then :
@@ -7698,7 +7542,7 @@
 set dummy pkg-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $PKG_CONFIG in
@@ -7743,7 +7587,7 @@
     save_LIBS="$LIBS"
     LIBS="$LIBS $X_LIBS"
     ac_fn_cxx_check_header_mongrel "$LINENO" "X11/extensions/Xrender.h" "ac_cv_header_X11_extensions_Xrender_h" "$ac_includes_default"
-if test "x$ac_cv_header_X11_extensions_Xrender_h" = x""yes; then :
+if test "x$ac_cv_header_X11_extensions_Xrender_h" = xyes; then :
 
 else
   rxvt_have_xrender=no
@@ -7751,7 +7595,7 @@
 
 
     ac_fn_cxx_check_func "$LINENO" "XRenderFindStandardFormat" "ac_cv_func_XRenderFindStandardFormat"
-if test "x$ac_cv_func_XRenderFindStandardFormat" = x""yes; then :
+if test "x$ac_cv_func_XRenderFindStandardFormat" = xyes; then :
 
 else
   rxvt_have_xrender=no
@@ -7766,7 +7610,7 @@
 set dummy pkg-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $PKG_CONFIG in
@@ -7811,7 +7655,7 @@
 set dummy xft-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_XFT_CONFIG+set}" = set; then :
+if ${ac_cv_path_XFT_CONFIG+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $XFT_CONFIG in
@@ -7864,7 +7708,7 @@
   for ac_header in X11/Xft/Xft.h
 do :
   ac_fn_cxx_check_header_mongrel "$LINENO" "X11/Xft/Xft.h" "ac_cv_header_X11_Xft_Xft_h" "$ac_includes_default"
-if test "x$ac_cv_header_X11_Xft_Xft_h" = x""yes; then :
+if test "x$ac_cv_header_X11_Xft_Xft_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_X11_XFT_XFT_H 1
 _ACEOF
@@ -7877,7 +7721,7 @@
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for XftDrawString32 in -lXft" >&5
 $as_echo_n "checking for XftDrawString32 in -lXft... " >&6; }
-if test "${ac_cv_lib_Xft_XftDrawString32+set}" = set; then :
+if ${ac_cv_lib_Xft_XftDrawString32+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7911,7 +7755,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_Xft_XftDrawString32" >&5
 $as_echo "$ac_cv_lib_Xft_XftDrawString32" >&6; }
-if test "x$ac_cv_lib_Xft_XftDrawString32" = x""yes; then :
+if test "x$ac_cv_lib_Xft_XftDrawString32" = xyes; then :
   :
 else
   support_xft=no
@@ -7920,7 +7764,7 @@
   for ac_header in fontconfig/fontconfig.h
 do :
   ac_fn_cxx_check_header_mongrel "$LINENO" "fontconfig/fontconfig.h" "ac_cv_header_fontconfig_fontconfig_h" "$ac_includes_default"
-if test "x$ac_cv_header_fontconfig_fontconfig_h" = x""yes; then :
+if test "x$ac_cv_header_fontconfig_fontconfig_h" = xyes; then :
   cat >>confdefs.h <<_ACEOF
 #define HAVE_FONTCONFIG_FONTCONFIG_H 1
 _ACEOF
@@ -7933,7 +7777,7 @@
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for FcPatternGet in -lfontconfig" >&5
 $as_echo_n "checking for FcPatternGet in -lfontconfig... " >&6; }
-if test "${ac_cv_lib_fontconfig_FcPatternGet+set}" = set; then :
+if ${ac_cv_lib_fontconfig_FcPatternGet+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   ac_check_lib_save_LIBS=$LIBS
@@ -7967,7 +7811,7 @@
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_fontconfig_FcPatternGet" >&5
 $as_echo "$ac_cv_lib_fontconfig_FcPatternGet" >&6; }
-if test "x$ac_cv_lib_fontconfig_FcPatternGet" = x""yes; then :
+if test "x$ac_cv_lib_fontconfig_FcPatternGet" = xyes; then :
   :
 else
   support_xft=no
@@ -8116,7 +7960,7 @@
 set dummy perl5; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_PERL+set}" = set; then :
+if ${ac_cv_path_PERL+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $PERL in
@@ -8156,7 +8000,7 @@
 set dummy perl; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_PERL+set}" = set; then :
+if ${ac_cv_path_PERL+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   case $PERL in
@@ -8320,10 +8164,21 @@
      :end' >>confcache
 if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
   if test -w "$cache_file"; then
-    test "x$cache_file" != "x/dev/null" &&
+    if test "x$cache_file" != "x/dev/null"; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
 $as_echo "$as_me: updating cache $cache_file" >&6;}
-    cat confcache >$cache_file
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
   else
     { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
 $as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
@@ -8355,7 +8210,7 @@
 
 
 
-: ${CONFIG_STATUS=./config.status}
+: "${CONFIG_STATUS=./config.status}"
 ac_write_fail=0
 ac_clean_files_save=$ac_clean_files
 ac_clean_files="$ac_clean_files $CONFIG_STATUS"
@@ -8456,6 +8311,7 @@
 IFS=" ""	$as_nl"
 
 # Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
 case $0 in #((
   *[\\/]* ) as_myself=$0 ;;
   *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
@@ -8763,7 +8619,7 @@
 # values after options handling.
 ac_log="
 This file was extended by $as_me, which was
-generated by GNU Autoconf 2.67.  Invocation command line was
+generated by GNU Autoconf 2.68.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
   CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -8825,7 +8681,7 @@
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
 config.status
-configured by $0, generated by GNU Autoconf 2.67,
+configured by $0, generated by GNU Autoconf 2.68,
   with options \\"\$ac_cs_config\\"
 
 Copyright (C) 2010 Free Software Foundation, Inc.
@@ -8951,7 +8807,7 @@
     "doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
     "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
 
-  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5 ;;
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac
 done
 
@@ -8973,9 +8829,10 @@
 # after its creation but before its name has been assigned to `$tmp'.
 $debug ||
 {
-  tmp=
+  tmp= ac_tmp=
   trap 'exit_status=$?
-  { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
 ' 0
   trap 'as_fn_exit 1' 1 2 13 15
 }
@@ -8983,12 +8840,13 @@
 
 {
   tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
-  test -n "$tmp" && test -d "$tmp"
+  test -d "$tmp"
 }  ||
 {
   tmp=./conf$$-$RANDOM
   (umask 077 && mkdir "$tmp")
 } || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
 
 # Set up the scripts for CONFIG_FILES section.
 # No need to generate them if there are no CONFIG_FILES.
@@ -9010,7 +8868,7 @@
   ac_cs_awk_cr=$ac_cr
 fi
 
-echo 'BEGIN {' >"$tmp/subs1.awk" &&
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
 _ACEOF
 
 
@@ -9038,7 +8896,7 @@
 rm -f conf$$subs.sh
 
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
-cat >>"\$tmp/subs1.awk" <<\\_ACAWK &&
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
 _ACEOF
 sed -n '
 h
@@ -9086,7 +8944,7 @@
 rm -f conf$$subs.awk
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 _ACAWK
-cat >>"\$tmp/subs1.awk" <<_ACAWK &&
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
   for (key in S) S_is_set[key] = 1
   FS = ""
 
@@ -9118,7 +8976,7 @@
   sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
 else
   cat
-fi < "$tmp/subs1.awk" > "$tmp/subs.awk" \
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
   || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
 _ACEOF
 
@@ -9152,7 +9010,7 @@
 # No need to generate them if there are no CONFIG_HEADERS.
 # This happens for instance with `./config.status Makefile'.
 if test -n "$CONFIG_HEADERS"; then
-cat >"$tmp/defines.awk" <<\_ACAWK ||
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
 BEGIN {
 _ACEOF
 
@@ -9164,8 +9022,8 @@
 # handling of long lines.
 ac_delim='%!_!# '
 for ac_last_try in false false :; do
-  ac_t=`sed -n "/$ac_delim/p" confdefs.h`
-  if test -z "$ac_t"; then
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
     break
   elif $ac_last_try; then
     as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
@@ -9266,7 +9124,7 @@
   esac
   case $ac_mode$ac_tag in
   :[FHL]*:*);;
-  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5 ;;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
   :[FH]-) ac_tag=-:-;;
   :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
   esac
@@ -9285,7 +9143,7 @@
     for ac_f
     do
       case $ac_f in
-      -) ac_f="$tmp/stdin";;
+      -) ac_f="$ac_tmp/stdin";;
       *) # Look for the file first in the build tree, then in the source tree
 	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
 	 # because $ac_f cannot contain `:'.
@@ -9294,7 +9152,7 @@
 	   [\\/$]*) false;;
 	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
 	   esac ||
-	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5 ;;
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
       esac
       case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
       as_fn_append ac_file_inputs " '$ac_f'"
@@ -9320,8 +9178,8 @@
     esac
 
     case $ac_tag in
-    *:-:* | *:-) cat >"$tmp/stdin" \
-      || as_fn_error $? "could not create $ac_file" "$LINENO" 5  ;;
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
     esac
     ;;
   esac
@@ -9451,21 +9309,22 @@
 s&@INSTALL@&$ac_INSTALL&;t t
 $ac_datarootdir_hack
 "
-eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$tmp/subs.awk" >$tmp/out \
-  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
 
 test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
-  { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
-  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
 which seems to be undefined.  Please make sure it is defined" >&5
 $as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
 which seems to be undefined.  Please make sure it is defined" >&2;}
 
-  rm -f "$tmp/stdin"
+  rm -f "$ac_tmp/stdin"
   case $ac_file in
-  -) cat "$tmp/out" && rm -f "$tmp/out";;
-  *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";;
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
   esac \
   || as_fn_error $? "could not create $ac_file" "$LINENO" 5
  ;;
@@ -9476,20 +9335,20 @@
   if test x"$ac_file" != x-; then
     {
       $as_echo "/* $configure_input  */" \
-      && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs"
-    } >"$tmp/config.h" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
       || as_fn_error $? "could not create $ac_file" "$LINENO" 5
-    if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
       { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
 $as_echo "$as_me: $ac_file is unchanged" >&6;}
     else
       rm -f "$ac_file"
-      mv "$tmp/config.h" "$ac_file" \
+      mv "$ac_tmp/config.h" "$ac_file" \
 	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
     fi
   else
     $as_echo "/* $configure_input  */" \
-      && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
       || as_fn_error $? "could not create -" "$LINENO" 5
   fi
  ;;