Revert "[Host.mm] Check for the right macro instead of inlining it"

This breaks macOS, because TARGET_OS_EMBEDDED is always defined. Thanks
to Jason Molenda for pointing this out.

Revert "Do not define AcceptPIDFromInferior when it will not be used"

This reverts commit d23c15a.
This reverts commit 936d142.

Author: vedantk

Diff for: lldb/source/Host/macosx/objcxx/Host.mm

@@ -9,10 +9,9 @@
 #include "lldb/Host/Host.h"
 
 #include <AvailabilityMacros.h>
-#include <TargetConditionals.h>
 
 // On device doesn't have supporty for XPC.
-#if defined(__APPLE__) && defined(TARGET_OS_EMBEDDED)
+#if defined(__APPLE__) && (defined(__arm64__) || defined(__aarch64__))
 #define NO_XPC_SERVICES 1
 #endif
 
@@ -136,8 +135,6 @@
   return false;
 }
 
-#if !NO_XPC_SERVICES
-
 static void *AcceptPIDFromInferior(void *arg) {
   const char *connect_url = (const char *)arg;
   ConnectionFileDescriptor file_conn;
@@ -156,6 +153,8 @@
   return NULL;
 }
 
+#if !defined(__arm__) && !defined(__arm64__) && !defined(__aarch64__)
+
 const char *applscript_in_new_tty = "tell application \"Terminal\"\n"
                                     "   activate\n"
                                     "	do script \"/bin/bash -c '%s';exit\"\n"
@@ -308,11 +307,11 @@ repeat with the_window in (get windows)\n\
   return error;
 }
 
-#endif // #if !NO_XPC_SERVICES
+#endif // #if !defined(__arm__) && !defined(__arm64__) && !defined(__aarch64__)
 
 bool Host::OpenFileInExternalEditor(const FileSpec &file_spec,
                                     uint32_t line_no) {
-#if NO_XPC_SERVICES
+#if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
   return false;
 #else
   // We attach this to an 'odoc' event to specify a particular selection
@@ -405,7 +404,7 @@ repeat with the_window in (get windows)\n\
   }
 
   return true;
-#endif // #if !NO_XPC_SERVICES
+#endif // #if !defined(__arm__) && !defined(__arm64__) && !defined(__aarch64__)
 }
 
 Environment Host::GetEnvironment() { return Environment(*_NSGetEnviron()); }
@@ -1264,7 +1263,7 @@ static bool ShouldLaunchUsingXPC(ProcessLaunchInfo &launch_info) {
   }
 
   if (launch_info.GetFlags().Test(eLaunchFlagLaunchInTTY)) {
-#if !NO_XPC_SERVICES
+#if !defined(__arm__) && !defined(__arm64__) && !defined(__aarch64__)
     return LaunchInNewTerminalWithAppleScript(exe_spec.GetPath().c_str(),
                                               launch_info);
 #else