Gem build options -- how to make them persist?

On one of my systems, the pg gem won't build unless you tell it the non-standard header location:

   gem install pg -- --with-pg-dir=/usr/pgsql-9.0

   gem update pg -- --with-pg-dir=/usr/pgsql-9.0

Now, how can I set this option once and for all, so that `gem update` always uses it?

I tried putting this in my .gemrc:

gem: --with-pg-dir=/usr/pgsql-9.0

but that doesn't work (as expected, since those options are passed to gem rather than the gem's extconf).

There is no way. I have a ticket filed for this feature. Patches welcome.

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On Dec 9, 2011, at 12:09, Joel VanderWerf <joelvanderwerf@gmail.com> wrote:

On one of my systems, the pg gem won't build unless you tell it the non-standard header location:

gem install pg -- --with-pg-dir=/usr/pgsql-9.0

gem update pg -- --with-pg-dir=/usr/pgsql-9.0

Now, how can I set this option once and for all, so that `gem update` always uses it?

I tried putting this in my .gemrc:

gem: --with-pg-dir=/usr/pgsql-9.0

but that doesn't work (as expected, since those options are passed to gem rather than the gem's extconf).

If you're using bundler, bundle config can do this for you.