diff -Naur a/opencl/Makefile.am b/opencl/Makefile.am
--- a/opencl/Makefile.am	2016-06-23 19:07:32.341941416 +0930
+++ b/opencl/Makefile.am	2016-06-23 19:07:49.788942216 +0930
@@ -7,6 +7,9 @@
 
 if !USING_MULTIPLELIBS
 noinst_LTLIBRARIES = libtesseract_opencl.la
+if USE_OPENCL
+libtesseract_opencl_la_LDFLAGS = $(OPENCL_LIB)
+endif
 else
 lib_LTLIBRARIES = libtesseract_opencl.la
 libtesseract_opencl_la_LDFLAGS = -version-info $(GENERIC_LIBRARY_VERSION)