Stop adding - in front of option flags

Author: Micket

easybuild/tools/toolchain/toolchain.py

@@ -1173,9 +1173,9 @@ def _setenv_variables(self, donotset=None, verbose=True):
     def get_flag(self, name):
         """Get compiler flag(s) for a certain option."""
         if isinstance(self.options.option(name), list):
-            return " ".join("-%s" % x for x in list(self.options.option(name)))
+            return " ".join(list(self.options.option(name)))
         else:
-            return "-%s" % self.options.option(name)
+            return self.options.option(name)
 
     def toolchain_family(self):
         """Return toolchain family for this toolchain."""