+withval=''
+
+# Check whether --with-tre or --without-tre was given.
+if test "${with_tre+set}" = set; then
+ withval="$with_tre"
+
+fi;
+if test "x$withval" != "x"; then
+ echo "$as_me:$LINENO: result: Using include dir $withval to find libtre" >&5
+echo "${ECHO_T}Using include dir $withval to find libtre" >&6
+ CPPFLAGS="-I$withval/include -L$withval/lib"
+ LIBS="$LIBS -L$withval/lib"
+else
+ echo "$as_me:$LINENO: result: Looking for tre in system and home dirs (${HOME})..." >&5
+echo "${ECHO_T}Looking for tre in system and home dirs (${HOME})..." >&6
+ CPPFLAGS="-I${HOME}/include -L${HOME}/lib"
+ LIBS="$LIBS -L${HOME}/lib"
+fi
+if test "${ac_cv_header_tre_regex_h+set}" = set; then
+ echo "$as_me:$LINENO: checking for tre/regex.h" >&5
+echo $ECHO_N "checking for tre/regex.h... $ECHO_C" >&6
+if test "${ac_cv_header_tre_regex_h+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_tre_regex_h" >&5
+echo "${ECHO_T}$ac_cv_header_tre_regex_h" >&6
+else
+ # Is the header compilable?
+echo "$as_me:$LINENO: checking tre/regex.h usability" >&5
+echo $ECHO_N "checking tre/regex.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+$ac_includes_default
+#include <tre/regex.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>conftest.er1
+ ac_status=$?
+ grep -v '^ *+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_header_compiler=yes
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking tre/regex.h presence" >&5
+echo $ECHO_N "checking tre/regex.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#include <tre/regex.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+ (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+ ac_status=$?
+ grep -v '^ *+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } >/dev/null; then
+ if test -s conftest.err; then
+ ac_cpp_err=$ac_c_preproc_warn_flag
+ ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+ else
+ ac_cpp_err=
+ fi
+else
+ ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+ ac_header_preproc=yes
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So? What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+ yes:no: )
+ { echo "$as_me:$LINENO: WARNING: tre/regex.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: tre/regex.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+ { echo "$as_me:$LINENO: WARNING: tre/regex.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: tre/regex.h: proceeding with the compiler's result" >&2;}
+ ac_header_preproc=yes
+ ;;
+ no:yes:* )
+ { echo "$as_me:$LINENO: WARNING: tre/regex.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: tre/regex.h: present but cannot be compiled" >&2;}
+ { echo "$as_me:$LINENO: WARNING: tre/regex.h: check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: tre/regex.h: check for missing prerequisite headers?" >&2;}
+ { echo "$as_me:$LINENO: WARNING: tre/regex.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: tre/regex.h: see the Autoconf documentation" >&2;}
+ { echo "$as_me:$LINENO: WARNING: tre/regex.h: section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: tre/regex.h: section \"Present But Cannot Be Compiled\"" >&2;}
+ { echo "$as_me:$LINENO: WARNING: tre/regex.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: tre/regex.h: proceeding with the preprocessor's result" >&2;}
+ { echo "$as_me:$LINENO: WARNING: tre/regex.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: tre/regex.h: in the future, the compiler will take precedence" >&2;}
+ (
+ cat <<\_ASBOX
+## -------------------------------------------------- ##
+## Report this to evilnet-devel@lists.sourceforge.net ##
+## -------------------------------------------------- ##
+_ASBOX
+ ) |
+ sed "s/^/$as_me: WARNING: /" >&2
+ ;;
+esac
+echo "$as_me:$LINENO: checking for tre/regex.h" >&5
+echo $ECHO_N "checking for tre/regex.h... $ECHO_C" >&6
+if test "${ac_cv_header_tre_regex_h+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ ac_cv_header_tre_regex_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_tre_regex_h" >&5
+echo "${ECHO_T}$ac_cv_header_tre_regex_h" >&6
+
+fi
+if test $ac_cv_header_tre_regex_h = yes; then
+ :
+else
+ { { echo "$as_me:$LINENO: error: tre/regex.h, the TRE regex headers, were not found. Install tre or use --with-tre=PATH to tell me how to find it, where PATH/include/tre/regex.h exists. For conveniance, just type 'tools/tre_install.sh' now, to install tre in your home directory." >&5
+echo "$as_me: error: tre/regex.h, the TRE regex headers, were not found. Install tre or use --with-tre=PATH to tell me how to find it, where PATH/include/tre/regex.h exists. For conveniance, just type 'tools/tre_install.sh' now, to install tre in your home directory." >&2;}
+ { (exit 1); exit 1; }; }
+fi
+
+
+
+echo "$as_me:$LINENO: checking for regexec in -ltre" >&5
+echo $ECHO_N "checking for regexec in -ltre... $ECHO_C" >&6
+if test "${ac_cv_lib_tre_regexec+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ltre $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+
+/* Override any gcc2 internal prototype to avoid an error. */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char regexec ();
+int
+main ()
+{
+regexec ();
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+ (eval $ac_link) 2>conftest.er1
+ ac_status=$?
+ grep -v '^ *+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; } &&
+ { ac_try='test -s conftest$ac_exeext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_cv_lib_tre_regexec=yes
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_tre_regexec=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_tre_regexec" >&5
+echo "${ECHO_T}$ac_cv_lib_tre_regexec" >&6
+if test $ac_cv_lib_tre_regexec = yes; then
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBTRE 1
+_ACEOF
+
+ LIBS="-ltre $LIBS"
+
+else
+ { { echo "$as_me:$LINENO: error: TRE regex library not found. Install tre, or use --with-tre=PATH to tell me how to find it, where PATH/lib/libtre.so exists. For conveniance, just type 'tools/tre_install.sh' now, to install tre in your home directory." >&5
+echo "$as_me: error: TRE regex library not found. Install tre, or use --with-tre=PATH to tell me how to find it, where PATH/lib/libtre.so exists. For conveniance, just type 'tools/tre_install.sh' now, to install tre in your home directory." >&2;}
+ { (exit 1); exit 1; }; }
+fi
+
+
+