Re: :conf should run in $BDIR

Bram Moolenaar writes:

 >> :chdir $BDIR
 >> :conf header {required} boost/spirit.hpp {language = C++}
 >> :chdir -

 > Well, a configure check should not leave temp files
 > behind in any case.

I agree! 

But that will be _very_ hard to accomplish. The *.rpo files
generated by the C++ compiler are a good example. GCC will
generate them, when the '-frepo' flag is given in CXXFLAGS.
Other compilers have similar mechanisms, all of which are
triggered by different flags (and leave different file names
behind). Personally, I wouldn't even try to catch all those
cases; it's a lost cause to begin with.

Besides, leaving result files behind allows for checking
whether a test has to be (re-)run or not, so it's not
necessarily a bad idea, IMHO. It's just that those files
should be in $BDIR, not in the source directory.

Peter

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