https://bugs.gentoo.org/670729

--- a/m4/reorganization/clamdtop.m4
+++ b/m4/reorganization/clamdtop.m4
@@ -4,12 +4,26 @@
 
 if test "$enable_clamdtop" != "no"; then
 
+PKG_CHECK_MODULES([CURSES], [ncursesw],
+		[CURSES_INCLUDE="<ncurses.h>";
+		 HAVE_LIBNCURSES=yes],
+		HAVE_LIBNCURSES=no])
+
+if test "X$HAVE_LIBNCURSES" != "Xyes"; then
+PKG_CHECK_MODULES([CURSES], [ncurses],
+	    [CURSES_INCLUDE="<ncurses.h>";
+	     HAVE_LIBNCURSES=yes],
+	    HAVE_LIBNCURSES=no])
+fi
+
+if test "X$HAVE_LIBNCURSES" != "Xyes"; then
 AC_LIB_FIND([ncurses], [ncurses/ncurses.h],
 	    AC_LANG_PROGRAM([#include <ncurses/ncurses.h>],
 			    [initscr(); KEY_RESIZE;]),
 	    [CURSES_CPPFLAGS="$INCNCURSES"; CURSES_LIBS="$LTLIBNCURSES";
 	     CURSES_INCLUDE="<ncurses/ncurses.h>"],
 	    [])
+fi
 
 if test "X$HAVE_LIBNCURSES" != "Xyes"; then
     HAVE_LIBNCURSES=