pip install giraffez fails

[ChrisRDep]

I repeatedly get this error despite having installed all requirements:

In file included from giraffez/_teradataptmodule.cc:20:
/Library/Application Support/teradata/client/15.10/tbuild/tptapi/inc/connection.h:87:10: fatal error: 'iostream' file
not found
#include
^~~~~~~~~~
1 warning and 1 error generated.
error: command 'gcc' failed with exit status 1