Dear all,

maybe this is a piece of c2hs behaviour I missed to understand, but it appears happening with C++ style includes deep in the header call hierarchy – in case of a such backend C++ library, if one wishes to refer to by *.h's in c2hs (e.g. for access to types of it), one might have a problem.

- 8< cSample.h ---------------------------------------------

#include <iostream> ///////// here, with c2hs, leading to build abort

#ifdef __cplusplus

extern "C" {

#endif

void sampleFunction();

#ifdef __cplusplus

}

#endif

- 8< cSample.cpp ---------------------------------------------

#include "cSample.h"

#include <iostream> ///////// here no problem

void sampleFunction(){

std::cout << "OK" << std::endl;

}

- 8< ----------------------------------------------------------------

While 'old school' FFI (foreign import ccall) handles this effortlessly, c2hs uses to abort with an exception like

C/cSample.h:3:20: fatal error: iostream: No such file or directory

compilation terminated.

I see that hsqml gets around this, but apparently by tweaking Setup.hs in a way not quite trivial – would this be necessary in any case, or are there simpler alternatives?

Please excuse if I oversaw something, but I am afraid I didn't see this interesting issue covered elsewhere.

Thank you a lot in advance & cheers, Nick