For CYGWIN prefer to use "opencl.dll" (installed by drivers) instead of optional "cygOpenCL-1.dll"

docs/changes.txt

@@ -38,6 +38,7 @@
 - Building: Added hashcat32.dll and hashcat64.dll makefile targets for building hashcat windows libraries
 - Building: Added production flag in Makefile to disable all the GCC compiler options needed only for development
 - Building: Removed access to readlink() on FreeBSD
+- Building: For CYGWIN prefer to use "opencl.dll" (installed by drivers) instead of optional "cygOpenCL-1.dll"
 - Events: Added new event EVENT_WEAK_HASH_ALL_CRACKED if all hashes have been cracked during weak hash check
 - Hardware management: Switched matching ADL device with OpenCL device by using PCI bus, device and function
 - Hardware management: Switched matching NvAPI device with OpenCL device by using PCI bus, device and function

src/opencl.c

@@ -377,7 +377,9 @@ int ocl_init (hashcat_ctx_t *hashcat_ctx)
   #elif defined(__APPLE__)
   ocl->lib = hc_dlopen ("/System/Library/Frameworks/OpenCL.framework/OpenCL", RTLD_NOW);
   #elif defined (__CYGWIN__)
-  ocl->lib = hc_dlopen ("cygOpenCL-1.dll", RTLD_NOW);
+  ocl->lib = hc_dlopen ("opencl.dll", RTLD_NOW);
+
+  if (ocl->lib == NULL) ocl->lib = hc_dlopen ("cygOpenCL-1.dll", RTLD_NOW);
   #else
   ocl->lib = hc_dlopen ("libOpenCL.so", RTLD_NOW);