diff --git a/configure b/configure
index 4d72795..ad92727 100755
--- a/configure
+++ b/configure
@@ -7466,7 +7466,7 @@
ax_save_CPPFLAGS=$CPPFLAGS
CPPFLAGS="$CL_CFLAGS $CPPFLAGS"
-for ac_header in CL/opencl.h OpenCL/OpenCL.h
+for ac_header in CL/cl.h OpenCL/cl.h
do :
as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -7525,12 +7525,12 @@
# if defined(HAVE_WINDOWS_H) && defined(_WIN32)
# include <windows.h>
# endif
-# ifdef HAVE_CL_OPENCL_H
-# include <CL/opencl.h>
-# elif defined(HAVE_OPENCL_OPENCL_H)
-# include <OpenCL/OpenCL.h>
+# ifdef HAVE_CL_CL_H
+# include <CL/cl.h>
+# elif defined(HAVE_OPENCL_CL_H)
+# include <OpenCL/cl.h>
# else
-# error no OpenCL.h
+# error no CL.h
# endif
int
main ()
@@ -7550,12 +7550,12 @@
# if defined(HAVE_WINDOWS_H) && defined(_WIN32)
# include <windows.h>
# endif
-# ifdef HAVE_CL_OPENCL_H
-# include <CL/opencl.h>
-# elif defined(HAVE_OPENCL_OPENCL_H)
-# include <OpenCL/OpenCL.h>
+# ifdef HAVE_CL_CL_H
+# include <CL/cl.h>
+# elif defined(HAVE_OPENCL_CL_H)
+# include <OpenCL/cl.h>
# else
-# error no OpenCL.h
+# error no CL.h
# endif
int
main ()
@@ -7575,12 +7575,12 @@
# if defined(HAVE_WINDOWS_H) && defined(_WIN32)
# include <windows.h>
# endif
-# ifdef HAVE_CL_OPENCL_H
-# include <CL/opencl.h>
-# elif defined(HAVE_OPENCL_OPENCL_H)
-# include <OpenCL/OpenCL.h>
+# ifdef HAVE_CL_CL_H
+# include <CL/cl.h>
+# elif defined(HAVE_OPENCL_CL_H)
+# include <OpenCL/cl.h>
# else
-# error no OpenCL.h
+# error no CL.h
# endif
int
main ()
@@ -7611,12 +7611,12 @@
# if defined(HAVE_WINDOWS_H) && defined(_WIN32)
# include <windows.h>
# endif
-# ifdef HAVE_CL_OPENCL_H
-# include <CL/opencl.h>
-# elif defined(HAVE_OPENCL_OPENCL_H)
-# include <OpenCL/OpenCL.h>
+# ifdef HAVE_CL_CL_H
+# include <CL/cl.h>
+# elif defined(HAVE_OPENCL_CL_H)
+# include <OpenCL/cl.h>
# else
-# error no OpenCL.h
+# error no CL.h
# endif
int
main ()