I was trying to install django-libsass and come up with this issue (torchbox/django-libsass#3)

cc -fno-strict-aliasing -O2 -pipe -fno-strict-aliasing -DNDEBUG -fPIC -I./libsass -I/usr/local/include/python2.7 -c libsass/cencode.c -o build/temp.freebsd-11.0-CURRENT-amd64-2.7/libsass/cencode.o -c -O2 -fPIC -std=c++0x -Wall -Wno-parentheses

error: invalid argument '-std=c++0x' not allowed with 'C/ObjC'

error: command 'cc' failed with exit status 1

cc is clang v 3.4.1 here and it seems not to like "c++0x"

I downloaded the git version and tried to build and I do get the same error:
"error: invalid argument '-std=c++0x' not allowed with 'C/ObjC'"

Thanks