configure.ac: Require OpenSlide >= 3.4.0

bgilbert · bgilbert · commit a7367fd1baae · 2014-01-25T19:42:02.000-05:00
diff --git a/configure.ac b/configure.ac
@@ -40,7 +40,7 @@ AC_MSG_RESULT([$ANT_BUILDDIR])
 
 # Checks for libraries.
 
-PKG_CHECK_MODULES([OPENSLIDE], [openslide])
+PKG_CHECK_MODULES([OPENSLIDE], [openslide >= 3.4.0])
 
 # Checks for header files.
 
