Back to using -std=c++11, as certain versions of C++ compilers

need it to compile the C++ source (which technically *is* using
the C++11 standard). Why oh why can't clang not just ignore any
-std=c++11 option for C sources? Or why doesn't setup.py allow
setting different compile options for C and C++ sources?

setup.py

@@ -14,7 +14,9 @@
 
 module1 = Extension('readply', 
     include_dirs = ['./rply', numpy.get_include()],
-    sources = ['readply.cpp', 'rply/rply.c'])
+    sources = ['readply.cpp', 'rply/rply.c'],
+    extra_compile_args = ['-std=c++11']
+)
 
 setup(
     name = 'readply',