SL-821: Avoid Breakpad (and signal handling in general) for BugSplat.

Pass LL_BUGSPLAT into llapp.cpp compile to be able to detect that.

indra/llcommon/CMakeLists.txt

@@ -255,6 +255,11 @@ set(llcommon_HEADER_FILES
 set_source_files_properties(${llcommon_HEADER_FILES}
                             PROPERTIES HEADER_FILE_ONLY TRUE)
 
+if (DEFINED ENV{BUGSPLAT_DB})
+  set_source_files_properties(llapp.cpp
+    PROPERTIES COMPILE_DEFINITIONS "LL_BUGSPLAT")
+endif (DEFINED ENV{BUGSPLAT_DB})
+
 list(APPEND llcommon_SOURCE_FILES ${llcommon_HEADER_FILES})
 
 if(LLCOMMON_LINK_SHARED)

indra/llcommon/llapp.cpp

@@ -392,7 +392,7 @@ void LLApp::setupErrorHandling(bool second_instance)
 
 #if LL_WINDOWS
 
-#if LL_SEND_CRASH_REPORTS
+#if LL_SEND_CRASH_REPORTS && ! defined(LL_BUGSPLAT)
 	EnableCrashingOnCrashes();
 
 	// This sets a callback to handle w32 signals to the console window.
@@ -454,8 +454,15 @@ void LLApp::setupErrorHandling(bool second_instance)
 			mExceptionHandler->set_handle_debug_exceptions(true);
 		}
 	}
-#endif
-#else
+#endif // LL_SEND_CRASH_REPORTS && ! defined(LL_BUGSPLAT)
+#else  // ! LL_WINDOWS
+
+#if defined(LL_BUGSPLAT)
+	// Don't install our own signal handlers -- BugSplat needs to hook them,
+	// or it's completely ineffectual.
+	bool installHandler = false;
+
+#else // ! LL_BUGSPLAT
 	//
 	// Start up signal handling.
 	//
@@ -463,9 +470,11 @@ void LLApp::setupErrorHandling(bool second_instance)
 	// thread, asynchronous signals can be delivered to any thread (in theory)
 	//
 	setup_signals();
-	
+
 	// Add google breakpad exception handler configured for Darwin/Linux.
 	bool installHandler = true;
+#endif // ! LL_BUGSPLAT
+
 #if LL_DARWIN
 	// For the special case of Darwin, we do not want to install the handler if
 	// the process is being debugged as the app will exit with value ABRT (6) if
@@ -498,7 +507,7 @@ void LLApp::setupErrorHandling(bool second_instance)
 		// installing the handler.
 		installHandler = true;
 	}
-	#endif
+	#endif // ! LL_RELEASE_FOR_DOWNLOAD
 
 	if(installHandler && (mExceptionHandler == 0))
 	{
@@ -514,9 +523,9 @@ void LLApp::setupErrorHandling(bool second_instance)
 		google_breakpad::MinidumpDescriptor desc(mDumpPath);
 	    mExceptionHandler = new google_breakpad::ExceptionHandler(desc, NULL, unix_minidump_callback, NULL, true, -1);
 	}
-#endif
+#endif // LL_LINUX
 
-#endif
+#endif // ! LL_WINDOWS
 	startErrorThread();
 }