diff --git a/lldb/source/Host/macosx/objcxx/HostInfoMacOSX.mm b/lldb/source/Host/macosx/objcxx/HostInfoMacOSX.mm
--- a/lldb/source/Host/macosx/objcxx/HostInfoMacOSX.mm
+++ b/lldb/source/Host/macosx/objcxx/HostInfoMacOSX.mm
@@ -379,6 +379,13 @@
     args.AppendArgument("--sdk");
     args.AppendArgument(sdk);
 
+    Log *log = GetLog(LLDBLog::Host);
+    if (log) {
+      std::string cmdstr;
+      args.GetCommandString(cmdstr);
+      log->Printf("GetXcodeSDK() running shell cmd '%s'", cmdstr.c_str());
+    }
+
     int status = 0;
     int signo = 0;
     std::string output_str;
diff --git a/lldb/source/Plugins/Platform/MacOSX/PlatformAppleSimulator.h b/lldb/source/Plugins/Platform/MacOSX/PlatformAppleSimulator.h
--- a/lldb/source/Plugins/Platform/MacOSX/PlatformAppleSimulator.h
+++ b/lldb/source/Plugins/Platform/MacOSX/PlatformAppleSimulator.h
@@ -59,7 +59,8 @@
                  llvm::Triple::OSType preferred_os,
                  llvm::SmallVector<llvm::Triple::OSType, 4> supported_os,
                  llvm::SmallVector<llvm::StringRef, 4> supported_triples,
-                 llvm::StringRef sdk, XcodeSDK::Type sdk_type,
+                 std::string sdk_name_preferred, std::string sdk_name_secondary,
+                 XcodeSDK::Type sdk_type,
                  CoreSimulatorSupport::DeviceType::ProductFamilyID kind,
                  bool force, const ArchSpec *arch);
 
diff --git a/lldb/source/Plugins/Platform/MacOSX/PlatformAppleSimulator.cpp b/lldb/source/Plugins/Platform/MacOSX/PlatformAppleSimulator.cpp
--- a/lldb/source/Plugins/Platform/MacOSX/PlatformAppleSimulator.cpp
+++ b/lldb/source/Plugins/Platform/MacOSX/PlatformAppleSimulator.cpp
@@ -274,13 +274,23 @@
   return result;
 }
 
+static llvm::StringRef GetXcodeSDKDir(std::string preferred,
+                                      std::string secondary) {
+  llvm::StringRef sdk;
+  sdk = HostInfo::GetXcodeSDKPath(XcodeSDK(std::move(preferred)));
+  if (sdk.empty())
+    sdk = HostInfo::GetXcodeSDKPath(XcodeSDK(std::move(secondary)));
+  return sdk;
+}
+
 PlatformSP PlatformAppleSimulator::CreateInstance(
     const char *class_name, const char *description, ConstString plugin_name,
     llvm::SmallVector<llvm::Triple::ArchType, 4> supported_arch,
     llvm::Triple::OSType preferred_os,
     llvm::SmallVector<llvm::Triple::OSType, 4> supported_os,
     llvm::SmallVector<llvm::StringRef, 4> supported_triples,
-    llvm::StringRef sdk, lldb_private::XcodeSDK::Type sdk_type,
+    std::string sdk_name_preferred, std::string sdk_name_secondary,
+    lldb_private::XcodeSDK::Type sdk_type,
     CoreSimulatorSupport::DeviceType::ProductFamilyID kind, bool force,
     const ArchSpec *arch) {
   Log *log = GetLog(LLDBLog::Platform);
@@ -338,6 +348,8 @@
   if (create) {
     LLDB_LOGF(log, "%s::%s() creating platform", class_name, __FUNCTION__);
 
+    llvm::StringRef sdk =
+        GetXcodeSDKDir(sdk_name_preferred, sdk_name_secondary);
     return PlatformSP(new PlatformAppleSimulator(
         class_name, description, plugin_name, preferred_os, supported_triples,
         sdk, sdk_type, kind));
@@ -514,15 +526,6 @@
          !arch->TripleEnvironmentWasSpecified();
 }
 
-static llvm::StringRef GetXcodeSDKDir(std::string preferred,
-                                      std::string secondary) {
-  llvm::StringRef sdk;
-  sdk = HostInfo::GetXcodeSDKPath(XcodeSDK(std::move(preferred)));
-  if (sdk.empty())
-    sdk = HostInfo::GetXcodeSDKPath(XcodeSDK(std::move(secondary)));
-  return sdk;
-}
-
 static const char *g_ios_plugin_name = "ios-simulator";
 static const char *g_ios_description = "iPhone simulator platform plug-in.";
 
@@ -540,10 +543,6 @@
   static PlatformSP CreateInstance(bool force, const ArchSpec *arch) {
     if (shouldSkipSimulatorPlatform(force, arch))
       return nullptr;
-    llvm::StringRef sdk;
-    sdk = HostInfo::GetXcodeSDKPath(XcodeSDK("iPhoneSimulator.Internal.sdk"));
-    if (sdk.empty())
-      sdk = HostInfo::GetXcodeSDKPath(XcodeSDK("iPhoneSimulator.sdk"));
 
     return PlatformAppleSimulator::CreateInstance(
         "PlatformiOSSimulator", g_ios_description,
@@ -566,7 +565,7 @@
 #endif
 #endif
         },
-        GetXcodeSDKDir("iPhoneSimulator.Internal.sdk", "iPhoneSimulator.sdk"),
+        "iPhoneSimulator.Internal.sdk", "iPhoneSimulator.sdk",
         XcodeSDK::Type::iPhoneSimulator,
         CoreSimulatorSupport::DeviceType::ProductFamilyID::iPhone, force, arch);
   }
@@ -604,7 +603,7 @@
 #endif
 #endif
         },
-        GetXcodeSDKDir("AppleTVSimulator.Internal.sdk", "AppleTVSimulator.sdk"),
+        "AppleTVSimulator.Internal.sdk", "AppleTVSimulator.sdk",
         XcodeSDK::Type::AppleTVSimulator,
         CoreSimulatorSupport::DeviceType::ProductFamilyID::appleTV, force,
         arch);
@@ -646,7 +645,7 @@
 #endif
 #endif
         },
-        GetXcodeSDKDir("WatchSimulator.Internal.sdk", "WatchSimulator.sdk"),
+        "WatchSimulator.Internal.sdk", "WatchSimulator.sdk",
         XcodeSDK::Type::WatchSimulator,
         CoreSimulatorSupport::DeviceType::ProductFamilyID::appleWatch, force,
         arch);