opencl: HACK: Build a stub dll if Unix headers are missing.

CW-Bug-Id: #25276

Author: Paul Gofman

configure.ac

@@ -1428,9 +1428,6 @@ if test "$ac_cv_header_CL_cl_h" = "yes"
 then
     AC_CHECK_LIB(OpenCL,clGetPlatformInfo,[AC_SUBST(OPENCL_LIBS,["-lOpenCL"])])
 fi
-WINE_NOTICE_WITH(opencl,[test "x$ac_cv_lib_OpenCL_clGetPlatformInfo" != xyes],
-                 [OpenCL ${notice_platform}development files not found, OpenCL won't be supported.],
-                 [enable_opencl])
 
 dnl **** Check for libpcap ****
 if test "$ac_cv_header_pcap_pcap_h" = "yes"

dlls/opencl/unix_private.h

@@ -38,8 +38,12 @@
 #define CL_USE_DEPRECATED_OPENCL_2_0_APIS
 #define CL_TARGET_OPENCL_VERSION 220
 #include <CL/cl.h>
+#define HAVE_OPENCL
 #elif defined(HAVE_OPENCL_OPENCL_H)
 #include <OpenCL/opencl.h>
+#define HAVE_OPENCL
+#else
+#include "opencl_types.h"
 #endif
 
 #include "unixlib.h"