+
+cf_cv_regex_hdrs=no
+case $cf_regex_func in #(vi
+compile) #(vi
+ for cf_regex_hdr in regexp.h regexpr.h
+ do
+ cat >conftest.$ac_ext <<_ACEOF
+#line 13432 "configure"
+#include "confdefs.h"
+#include <$cf_regex_hdr>
+int
+main ()
+{
+
+ char *p = compile("", "", "", 0);
+ int x = step("", "");
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:13447: \"$ac_link\"") >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ echo "$as_me:13450: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest$ac_exeext'
+ { (eval echo "$as_me:13453: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:13456: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+
+ cf_cv_regex_hdrs=$cf_regex_hdr
+ break
+
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+ done
+ ;;
+*)
+ for cf_regex_hdr in regex.h
+ do
+ cat >conftest.$ac_ext <<_ACEOF
+#line 13473 "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <$cf_regex_hdr>
+int
+main ()
+{
+
+ regex_t *p;
+ int x = regcomp(p, "", 0);
+ int y = regexec(p, "", 0, 0, 0);
+ regfree(p);
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:13491: \"$ac_link\"") >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ echo "$as_me:13494: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest$ac_exeext'
+ { (eval echo "$as_me:13497: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:13500: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+
+ cf_cv_regex_hdrs=$cf_regex_hdr
+ break
+
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+ done
+ ;;
+esac
+
+fi
+echo "$as_me:13516: result: $cf_cv_regex_hdrs" >&5
+echo "${ECHO_T}$cf_cv_regex_hdrs" >&6
+
+case $cf_cv_regex_hdrs in #(vi
+ no) { echo "$as_me:13520: WARNING: no regular expression header found" >&5
+echo "$as_me: WARNING: no regular expression header found" >&2;} ;; #(vi
+ regex.h) cat >>confdefs.h <<\EOF
+#define HAVE_REGEX_H_FUNCS 1
+EOF
+ ;; #(vi
+ regexp.h) cat >>confdefs.h <<\EOF
+#define HAVE_REGEXP_H_FUNCS 1
+EOF
+ ;; #(vi
+ regexpr.h) cat >>confdefs.h <<\EOF
+#define HAVE_REGEXPR_H_FUNCS 1
+EOF
+ ;;
+esac
+
+for ac_header in \
+fcntl.h \
+getopt.h \
+limits.h \
+locale.h \
+math.h \
+poll.h \
+sys/bsdtypes.h \
+sys/ioctl.h \
+sys/param.h \
+sys/poll.h \
+sys/select.h \
+sys/time.h \
+sys/times.h \
+ttyent.h \
+unistd.h \
+wctype.h \
+
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+echo "$as_me:13556: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ cat >conftest.$ac_ext <<_ACEOF
+#line 13562 "configure"
+#include "confdefs.h"
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:13566: \"$ac_cpp conftest.$ac_ext\"") >&5
+ (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+ ac_status=$?
+ egrep -v '^ *\+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ echo "$as_me:13572: \$? = $ac_status" >&5
+ (exit $ac_status); } >/dev/null; then
+ if test -s conftest.err; then
+ ac_cpp_err=$ac_c_preproc_warn_flag
+ else
+ ac_cpp_err=
+ fi
+else
+ ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+ eval "$as_ac_Header=yes"
+else
+ echo "$as_me: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ eval "$as_ac_Header=no"
+fi
+rm -f conftest.err conftest.$ac_ext
+fi
+echo "$as_me:13591: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+ cat >>confdefs.h <<EOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+EOF
+
+fi
+done
+
+for ac_header in unistd.h getopt.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+echo "$as_me:13604: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ cat >conftest.$ac_ext <<_ACEOF
+#line 13610 "configure"