[Bug 688171] i686-pc-mingw32-pkg-config shouldn't unset PKG_CONFIG_PATH

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https://bugzilla.redhat.com/show_bug.cgi?id=688171

--- Comment #3 from Kalev Lember <kalev at smartlink.ee> 2011-03-17 08:24:13 EDT ---
(In reply to comment #1)
> Unfortunately this will break compilation of packages using RPM:

Not necessarily.

The way i686-pc-mingw32-* wrapper scripts are currently done is that they
internally evaluate the matching rpm macro. For example,
i686-pc-mingw32-pkg-config runs 'rpm --eval %{_mingw32_pkg_config}'.

We need the unset command in the rpm macro, but it's not needed for the wrapper
script. In fact, it's not only unneeded but might cause problems when configure
scripts call <host-triplet>-pkg-config.

I would say another solution is rewriting i686-pc-mingw32-pkg-config script so
it wouldn't call rpm --eval internally. With that we'd be able to get rid of
the 'unset' command in the script, but keep it in the rpm macro.

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