how to not break cross-building

[Olaf Till]

In building package documentation, when the package is not yet
installed, the cleanest way for extracting help strings from C++ code
seems to be to compile a (minimalistic) binary which outputs this help
string. In this way, all special characters in the C-string are
treated as they should be.

This certainly will break cross-building if the cross-compiler is used
to compile the minimalistic binary. But any native C-compiler would
serve, it only has to evaluate the C-string correctly and call
'printf'. I have no practical experience with cross-building, I only
care for it because I know others want to do it with packages. Is
there a way to specifiy, in the Makefile, that for a certain step a
native compiler should be used, not the cross-compiler?

Olaf

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