+: ${cf_nculib_root:=$cf_cv_screen}
+echo "$as_me:12986: checking if $cf_nculib_root uses pthreads" >&5
+echo $ECHO_N "checking if $cf_nculib_root uses pthreads... $ECHO_C" >&6
+if test "${cf_cv_ncurses_pthreads+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+ as_ac_Lib=`echo "ac_cv_lib_$cf_nculib_root''__nc_init_pthreads" | $as_tr_sh`
+echo "$as_me:12993: checking for _nc_init_pthreads in -l$cf_nculib_root" >&5
+echo $ECHO_N "checking for _nc_init_pthreads in -l$cf_nculib_root... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Lib+set}\" = set"; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-l$cf_nculib_root $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+#line 13001 "configure"
+#include "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 _nc_init_pthreads ();
+int
+main ()
+{
+_nc_init_pthreads ();
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:13020: \"$ac_link\"") >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ echo "$as_me:13023: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest$ac_exeext'
+ { (eval echo "$as_me:13026: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:13029: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ eval "$as_ac_Lib=yes"
+else
+ echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+eval "$as_ac_Lib=no"
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:13040: result: `eval echo '${'$as_ac_Lib'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Lib'}'`" >&6
+if test `eval echo '${'$as_ac_Lib'}'` = yes; then
+ cf_cv_ncurses_pthreads=yes
+else
+ cf_cv_ncurses_pthreads=no
+fi
+
+fi
+echo "$as_me:13049: result: $cf_cv_ncurses_pthreads" >&5
+echo "${ECHO_T}$cf_cv_ncurses_pthreads" >&6
+if test "$cf_cv_ncurses_pthreads" = yes
+then
+
+cf_add_libs="-lpthread"
+# Filter out duplicates - this happens with badly-designed ".pc" files...
+for cf_add_1lib in $LIBS
+do
+ for cf_add_2lib in $cf_add_libs
+ do
+ if test "x$cf_add_1lib" = "x$cf_add_2lib"
+ then
+ cf_add_1lib=
+ break
+ fi
+ done
+ test -n "$cf_add_1lib" && cf_add_libs="$cf_add_libs $cf_add_1lib"
+done
+LIBS="$cf_add_libs"
+
+fi
+