Improved capitalization in FindOpenCL.cmake, so QUIET keyword will be respected

Reorganized platform analysis in NML init method.
Failed attempt to get OPENMM_PLUGIN_DIR working for NML test.

cmake_modules/FindOpenCL.cmake

@@ -16,12 +16,12 @@ else(ENV_OPENCL_DIR)
 endif(ENV_OPENCL_DIR)
 
 include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(OPENCL DEFAULT_MSG OPENCL_LIBRARY OPENCL_INCLUDE_DIR)
+find_package_handle_standard_args(OpenCL DEFAULT_MSG OPENCL_LIBRARY OPENCL_INCLUDE_DIR)
 
-if(OPENCL_FOUND)
+if(OpenCL_FOUND)
   set(OPENCL_LIBRARIES ${OPENCL_LIBRARY})
-else(OPENCL_FOUND)
+else(OpenCL_FOUND)
   set(OPENCL_LIBRARIES)
-endif(OPENCL_FOUND)
+endif(OpenCL_FOUND)
 
 mark_as_advanced(OPENCL_INCLUDE_DIR OPENCL_LIBRARY)
\ No newline at end of file

plugins/normalModeLangevin/src/NormalModeLangevin.cpp

@@ -38,12 +38,18 @@ using namespace std;
 
 extern "C" void initOpenMMPlugin() {
     cout << "Initializing Normal Mode Langevin OpenMM plugin..." << endl;
-    for (int p = 0; p < Platform::getNumPlatforms(); ++p) {
-        Platform& platform = Platform::getPlatform(p);
-        if (platform.getName() == "CudaPlatform")
-            // We don't have a Cuda one yet, but we will soon
-            platform.registerKernelFactory("ReferenceNMLKernelFactory", new ReferenceNMLKernelFactory());
-        else
+    // for (int p = 0; p < Platform::getNumPlatforms(); ++p) {
+
+    // Only register cuda kernels if cuda platform is found
+    try {
+        Platform& platform = Platform::getPlatform("CudaPlatform");
+        // platform.registerKernelFactory("CudaNMLKernelFactory", new CudaNMLKernelFactory());
+    } catch (std::exception exc) { // non fatal
+    }
+
+    try {
+        Platform& platform = Platform::getPlatform("ReferencePlatform");
         platform.registerKernelFactory("ReferenceNMLKernelFactory", new ReferenceNMLKernelFactory());
+    } catch (std::exception exc) { // non fatal
     }
 }

plugins/normalModeLangevin/test/CMakeLists.txt

@@ -2,4 +2,6 @@
 add_executable(TestNormalModeLangevin TestNormalModeLangevin.cpp)
 target_link_libraries(TestNormalModeLangevin OpenMM)
 add_test(TestNormalModeLangevin ${EXECUTABLE_OUTPUT_PATH}/TestNormalModeLangevin)
-
+set_tests_properties(TestNormalModeLangevin PROPERTIES ENVIRONMENT
+    "OPENMM_PLUGIN_DIR=\"${LIBRARY_OUTPUT_DIRECTORY}\""
+)