Fix invalid combinations of options rather than bomb out.

Fixes #1493

CMakeLists.txt

@@ -30,19 +30,11 @@ endfunction()
 # propagates CMake configuration options to the compiler
 function(configureProject)
 	if (PARANOIA)
-		if ("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
-			add_definitions(-DETH_PARANOIA)
-		else ()
-			message(FATAL_ERROR "Paranoia requires debug.")
-		endif ()
+		add_definitions(-DETH_PARANOIA)
 	endif ()
 
 	if (VMTRACE)
-		if ("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
-			add_definitions(-DETH_VMTRACE)
-		else ()
-			message(FATAL_ERROR "VM tracing requires debug.")
-		endif ()
+		add_definitions(-DETH_VMTRACE)
 	endif ()
 
 	if (ETHASHCL)
@@ -123,6 +115,17 @@ endfunction()
 set(CMAKE_AUTOMOC ON)
 cmake_policy(SET CMP0015 NEW)
 
+# Clear invalid option
+if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
+	if (PARANOIA)
+		message("Paranoia requires debug - disabling for release build.")
+		set(PARANOIA OFF)
+	endif ()
+	if (VMTRACE)
+		message("VM Tracing requires debug - disabling for release build.")
+		set (VMTRACE OFF)
+	endif ()
+endif ()
 
 createDefaultCacheConfig()
 configureProject()