AC_DEFUN([AX_C___ATTRIBUTE__], [
 AC_CACHE_CHECK([for __attribute__], [ax_cv___attribute__],
  [AC_COMPILE_IFELSE(
   [AC_LANG_PROGRAM(
    [[#include <stdio.h>
     static int test(void) __attribute__((unused));
     static int test(void) {
      return(1);
     }
   ]], [])],
   [ax_cv___attribute__=yes], [ax_cv___attribute__=no]
  )
 ])
 if test "$ax_cv___attribute__" = "yes"; then
  AC_DEFINE([HAVE___ATTRIBUTE__], 1, [define if your compiler has __attribute__])
 fi
])

AC_DEFUN([LOCAL_EXPAND_VAR], [
 this_last=
 this_curr="$2"
 while test "x${this_curr}" != "x${this_last}"; do
  this_last="${this_curr}"
  this_curr=`eval "echo ${this_curr}"`
 done
 $1="${this_curr}"
])

AC_DEFUN([LOCAL_CONFIG_NICE], [
 rm -f $1
 cat >$1<<EOF
#!/bin/sh
#
# Created by configure. Do not edit. Changes will be overwritten.
#

EOF
 eval "set x $[0] $ac_configure_args"
 shift
 for arg; do
  LOCAL_EXPAND_VAR(arg, $arg)
  echo "\"[$]arg\" \\" >> $1
 done
 echo '"[$]@"' >> $1
 chmod +x $1
])

AC_DEFUN([LOCAL_CONFIG_ARGS], [
 rm -f $1
 cat >$1<<EOF
/* Created by configure. Do not edit. Changes will be overwritten. */

EOF
 echo "#define CONFIG_ARGS \"" | tr -d '\n' >>$1
 eval "set x $[0] $ac_configure_args"
 shift
 for arg; do
  LOCAL_EXPAND_VAR(arg, $arg)
  echo "[$]arg " | tr -d '"' | tr -d '\n' >>$1
 done
 echo "\"" >>$1
])

AC_DEFUN([LOCAL_CONFIG_OPTS], [
 rm -f $1
 cat >$1<<EOF
/* Created by configure. Do not edit. Changes will be overwritten. */

EOF
 echo "#define CONFIG_OPTS \"" | tr -d '\n' >>$1
 echo "$2" | tr -d '\n' >>$1
 echo "\"" >>$1
])

AC_DEFUN([LOCAL_CONFIG_MACH], [
 rm -f $1
 cat >$1<<EOF
/* Created by configure. Do not edit. Changes will be overwritten. */

EOF
 echo "#define CONFIG_MACH \"" | tr -d '\n' >>$1
 echo $(uname -s -r -m 2>/dev/null | cut -f 1 -d '(' | cut -f 1 -d '/' | tr -d '\n') | tr -d '\n' >>$1
 echo "\"" >>$1
])

AC_DEFUN([LOCAL_CONFIG_USER], [
 rm -f $1
 cat >$1<<EOF
/* Created by configure. Do not edit. Changes will be overwritten. */

EOF
 echo "#define CONFIG_USER \"" | tr -d '\n' >>$1
 echo $(id -u -n 2>/dev/null || /usr/xpg4/bin/id -u -n 2>/dev/null || echo unknown | tr -d '\n')"@"$(hostname 2>/dev/null || echo unknown | cut -f 1 -d '.' | tr -d '\n') | tr -d '\n' >>$1
 echo "\"" >>$1
])

AC_DEFUN([LOCAL_CONFIG_WHEN], [
 rm -f $1
 cat >$1<<EOF
/* Created by configure. Do not edit. Changes will be overwritten. */

EOF
 echo "#define CONFIG_WHEN \"" | tr -d '\n' >>$1
 echo $(LC_ALL=C date 2>/dev/null | tr -d '\n') | tr -d '\n' >>$1
 echo "\"" >>$1
])

AC_DEFUN([LOCAL_CONFIG_VERC], [
 rm -f $1
 cat >$1<<EOF
/* Created by configure. Do not edit. Changes will be overwritten. */

EOF
 $CC -dM -E - </dev/null 2>/dev/null | grep '__VERSION__' | sed -e 's/__VERSION__/CONFIG_VERC/' >>$1
 cat >>$1<<EOF

#if ! defined(CONFIG_VERC)
#define CONFIG_VERC "unknown"
#endif
EOF
])

AC_DEFUN([LOCAL_CONFIG_VARS], [
 rm -f $1
 cat >$1<<EOF
/* Created by configure. Do not edit. Changes will be overwritten. */

EOF
 echo "#if defined(_POSIX2_LINE_MAX)" >>$1
 echo "#define CONFIG_LINE_LENGTH _POSIX2_LINE_MAX" >>$1
 echo "#else" >> $1
 echo "#define CONFIG_LINE_LENGTH $(getconf LINE_MAX 2>/dev/null || echo 2048 | tr -d '\n')" >>$1
 echo "#endif" >>$1
 echo "#if defined(MAXPATHLEN)" >>$1
 echo "#define CONFIG_PATH_LENGTH MAXPATHLEN" >>$1
 echo "#else" >> $1
 echo "#define CONFIG_PATH_LENGTH $(getconf PATH_MAX / 2>/dev/null || echo 1024 | tr -d '\n')" >>$1
 echo "#endif" >>$1
 echo "#if defined(MAXHOSTNAMELEN)" >>$1
 echo "#define CONFIG_HOSTNAME_LENGTH MAXHOSTNAMELEN" >>$1
 echo "#else" >> $1
 echo "#define CONFIG_HOSTNAME_LENGTH $(getconf HOST_NAME_MAX 2>/dev/null || echo 32 | tr -d '\n')" >>$1
 echo "#endif" >>$1
 echo "#if defined(LOGIN_NAME_MAX)" >>$1
 echo "#define CONFIG_LOGINNAME_LENGTH LOGIN_NAME_MAX" >>$1
 echo "#elif defined(MAXLOGNAME)" >>$1
 echo "#define CONFIG_LOGINNAME_LENGTH MAXLOGNAME" >>$1
 echo "#else" >> $1
 echo "#define CONFIG_LOGINNAME_LENGTH $(getconf LOGIN_NAME_MAX 2>/dev/null || echo 8 | tr -d '\n')" >>$1
 echo "#endif" >>$1
 if [[ "$(uname -s)" = "SunOS" ]]; then
  echo "#define CONFIG_SUNOS_VERSION $(uname -r | sed -e 's/\.\([0-9]\{1,1\}\)$/0\1/' -e 's/\.//' | tr -d '\n')" >>$1
 fi
])