COMPMID-417: Fix Yocto cross-compiles (Public pull request)

Change-Id: I9f89cef0d490c52150f7126dc72a69514cbf7b71
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/85248
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
diff --git a/SConstruct b/SConstruct
index 309e2eb..d98a99b 100644
--- a/SConstruct
+++ b/SConstruct
@@ -143,7 +143,7 @@
 
 if not GetOption("help"):
     try:
-        compiler_ver = subprocess.check_output([env['CXX'], "-dumpversion"]).strip()
+        compiler_ver = subprocess.check_output(env['CXX'].split() + ["-dumpversion"]).strip()
     except OSError:
         print("ERROR: Compiler '%s' not found" % env['CXX'])
         Exit(1)