diff --git a/shared/constants.go b/shared/constants.go
index c10e0c0..b9f8dd2 100644
--- a/shared/constants.go
+++ b/shared/constants.go
@@ -40,11 +40,13 @@ package shared
 //  1.0.0
 //  1.0.1                 various bug fixes
 //  1.2.0 April 28 2018   linux kernel work, sorting bitcode files, etc.
-//         May 2 2018      handleArchives rewritten to handle multiple occurrences of files with the same name.
-//                        corresponds with wllvm 1.1.6
+//        May 2 2018      handleArchives rewritten to handle multiple occurrences of files with the same name.
+//                        corresponds with wllvm 1.2.0. Gonna try and keep them in synch.
+//  1.2.1 May 13th 2018   -fsanitize= needs to be compile AND link.
+
 //
-const gllvmVersion = "1.2.0"
-const gllvmReleaseDate = "May 4 2018"
+const gllvmVersion = "1.2.1"
+const gllvmReleaseDate = "May 23 2018"
 
 const osDARWIN = "darwin"
 const osLINUX = "linux"
diff --git a/shared/extractor.go b/shared/extractor.go
index c2e2e7c..61ab35c 100644
--- a/shared/extractor.go
+++ b/shared/extractor.go
@@ -324,8 +324,12 @@ func listArchiveFiles(inputFile string) (contents []string) {
 
 func extractFile(archive string, filename string, instance int) bool {
 	var arArgs []string
-	arArgs = append(arArgs, "xN")
-	arArgs = append(arArgs, strconv.Itoa(instance))
+	if runtime.GOOS  != osDARWIN {
+		arArgs = append(arArgs, "xN")
+		arArgs = append(arArgs, strconv.Itoa(instance))
+	} else {
+		arArgs = append(arArgs, "x")
+	}
 	arArgs = append(arArgs, archive)
 	arArgs = append(arArgs, filename)
 	_, err := runCmd("ar", arArgs)
@@ -342,7 +346,8 @@ func fetchTOC(inputFile string) map[string]int {
 	contents := listArchiveFiles(inputFile)
 
 	for _, item := range contents {
-		if item != "" {
+		//iam: this is a hack to make get-bc work on libcurl.a
+		if item != "" && !strings.HasPrefix(item, "__.SYMDEF") {
 			toc[item]++
 		}
 	}
@@ -370,7 +375,7 @@ func handleArchive(ea extractionArgs) {
 
 	inputFile, _ := filepath.Abs(ea.InputFile)
 
-	LogWarning("handleArchive: extractionArgs = %v\n", ea)
+	LogInfo("handleArchive: extractionArgs = %v\n", ea)
 
 	// Create tmp dir
 	tmpDirName, err := ioutil.TempDir("", "gllvm")
@@ -466,7 +471,7 @@ func archiveBcFiles(ea extractionArgs, bcFiles []string) {
 			LogFatal("There was an error creating the bitcode archive: %v.\n", err)
 		}
 	}
-	LogWarning("Built bitcode archive: %s.", ea.OutputFile)
+	informUser("Built bitcode archive: %s.\n", ea.OutputFile)
 }
 
 func getsize(stringslice []string) (totalLength int) {
@@ -565,7 +570,7 @@ func linkBitcodeFilesIncrementally(ea extractionArgs, filesToLink []string, argM
 	if !success {
 		LogFatal("There was an error linking input files into %s because %v.\n", ea.OutputFile, err)
 	}
-	LogWarning("Bitcode file extracted to: %s, from files %v \n", ea.OutputFile, tmpFileList)
+	LogInfo("Bitcode file extracted to: %s, from files %v \n", ea.OutputFile, tmpFileList)
 }
 
 func linkBitcodeFiles(ea extractionArgs, filesToLink []string) {
@@ -584,7 +589,7 @@ func linkBitcodeFiles(ea extractionArgs, filesToLink []string) {
 		if !success {
 			LogFatal("There was an error linking input files into %s because %v.\n", ea.OutputFile, err)
 		}
-		LogWarning("Bitcode file extracted to: %s \n", ea.OutputFile)
+		informUser("Bitcode file extracted to: %s.\n", ea.OutputFile)
 	}
 }
 
@@ -661,5 +666,5 @@ func writeManifest(ea extractionArgs, bcFiles []string, artifactFiles []string)
 			LogFatal("There was an error while writing the manifest file: ", err)
 		}
 	}
-	LogWarning("Manifest file written to %s.", manifestFilename)
+	informUser("Manifest file written to %s.\n", manifestFilename)
 }
diff --git a/shared/parser.go b/shared/parser.go
index 2ba5138..feffe9a 100644
--- a/shared/parser.go
+++ b/shared/parser.go
@@ -223,6 +223,7 @@ func parse(argList []string) parserResult {
 		"-L": {1, pr.linkBinaryCallback},
 		"-T": {1, pr.linkBinaryCallback},
 		"-u": {1, pr.linkBinaryCallback},
+		"-install_name": {1, pr.linkBinaryCallback},
 
 		"-e":     {1, pr.linkBinaryCallback},
 		"-rpath": {1, pr.linkBinaryCallback},
@@ -241,6 +242,7 @@ func parse(argList []string) parserResult {
 		"-print-multi-directory":  {0, pr.compileUnaryCallback},
 		"-print-multi-lib":        {0, pr.compileUnaryCallback},
 		"-print-libgcc-file-name": {0, pr.compileUnaryCallback},
+		"-print-search-dirs":      {0, pr.compileUnaryCallback},
 
 		"-fprofile-arcs": {0, pr.compileLinkUnaryCallback},
 		"-coverage":      {0, pr.compileLinkUnaryCallback},
@@ -272,6 +274,7 @@ func parse(argList []string) parserResult {
 		`^--sysroot=.+$`:                        {0, pr.compileUnaryCallback},
 		`^-print-prog-name=.*$`:                 {0, pr.compileUnaryCallback},
 		`^-print-file-name=.*$`:                 {0, pr.compileUnaryCallback},
+		`^-mmacosx-version-min=.+$`:             {0, pr.compileLinkUnaryCallback},
 		`^-mstack-alignment=.+$`:                {0, pr.compileUnaryCallback}, //iam: linux kernel stuff
 		`^-march=.+$`:                           {0, pr.compileUnaryCallback}, //iam: linux kernel stuff
 		`^-mregparm=.+$`:                        {0, pr.compileUnaryCallback}, //iam: linux kernel stuff