fix: Support multiple option settings in ocloc

If ocloc is given -options several times, the variable is overwritten.
This change allows the user to add additional options multiple times.

Signed-off-by: Daria Hinz <daria.hinz@intel.com>

opencl/test/unit_test/offline_compiler/offline_compiler_tests.cpp

@@ -2888,6 +2888,28 @@ TEST(OfflineCompilerTest, givenInternalOptionsWhenCmdLineParsedThenOptionsAreApp
     EXPECT_TRUE(hasSubstr(internalOptions, std::string("myInternalOptions")));
 }
 
+TEST(OfflineCompilerTest, givenOptionsWhenCmdLineParsedThenOptionsAreAppendedToOptionsString) {
+    std::vector<std::string> argv = {
+        "ocloc",
+        "-options",
+        "options1",
+        "-options",
+        "options2"};
+
+    auto mockOfflineCompiler = std::unique_ptr<MockOfflineCompiler>(new MockOfflineCompiler());
+    ASSERT_NE(nullptr, mockOfflineCompiler);
+
+    testing::internal::CaptureStdout();
+    mockOfflineCompiler->parseCommandLine(argv.size(), argv);
+    std::string output = testing::internal::GetCapturedStdout();
+
+    EXPECT_NE(0u, output.size());
+
+    std::string options = mockOfflineCompiler->options;
+    EXPECT_TRUE(hasSubstr(options, std::string("options1")));
+    EXPECT_TRUE(hasSubstr(options, std::string("options2")));
+}
+
 TEST(OfflineCompilerTest, givenInputOptionsAndInternalOptionsFilesWhenOfflineCompilerIsInitializedThenCorrectOptionsAreSetAndRemainAfterBuild) {
     auto mockOfflineCompiler = std::unique_ptr<MockOfflineCompiler>(new MockOfflineCompiler());
     ASSERT_NE(nullptr, mockOfflineCompiler);

shared/offline_compiler/source/offline_compiler.cpp

@@ -698,7 +698,7 @@ int OfflineCompiler::parseCommandLine(size_t numArgs, const std::vector<std::str
         } else if ("-gen_file" == currArg) {
             useGenFile = true;
         } else if (("-options" == currArg) && hasMoreArgs) {
-            options = argv[argIndex + 1];
+            CompilerOptions::concatenateAppend(options, argv[argIndex + 1]);
             argIndex++;
         } else if (("-internal_options" == currArg) && hasMoreArgs) {
             CompilerOptions::concatenateAppend(internalOptions, argv[argIndex + 1]);