build-sys: ncurses is optional, don't fail when missing

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/configure.ac b/configure.ac
index 89629a112421426a4e727d870b89fb23f0027f0b..53bce053c9ca61366096022027093d975770993b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -727,9 +727,10 @@ AS_IF([test "x$with_ncurses" != xno], [
     ])
   ])
 
-  AS_IF([test "x$have_ncurses" = xno], [
-    AC_MSG_ERROR([ncurses or ncursesw selected, but library not found (--without-ncurses to disable)])
-  ])
+  AS_CASE([$with_ncurses:$have_ncurses],
+    [yes:no], [AC_MSG_ERROR([ncurses or ncursesw selected, but library not found])]
+  )
+
 ])
 AC_SUBST([NCURSES_CFLAGS])
 AC_SUBST([NCURSES_LIBS])