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From: Tom Lane <[email protected]>
To: [email protected]
Subject: FullTransactionId changes are causing portability issues
Date: Wed, 22 May 2019 09:56:07 -0400
Message-ID: <[email protected]> (raw)

Our Solaris packager reports that 12beta1 is failing to build for him
on some Solaris variants:

> The link failure is:

> ---
> Undefined			first referenced
>  symbol  			    in file
> ReadNextFullTransactionId           pg_checksums.o
> ld: fatal: symbol referencing errors. No output written to pg_checksums
> ---

> Now, ReadNextFullTransactionId() is implemented in
> src/backend/access/transam/varsup.c but I cannot see varsop.o being
> included in any of the libraries pg_checksum is linked against
> (libpgcommon.a and libpgport.a).

> When I check the pg_checksum.o I find that it references
> ReadNextFullTransactionId on the platforms that fail but not where it
> doesn't. The failed platforms are all sparc variants plus 64-bit x86
> on Solaris 11.

> The compiler used in Sun Studio 12u1, very old and and I can try to
> upgrade and see if that helps.
> [ it didn't ]

I'm a bit mystified why we did not see this problem in the buildfarm,
especially since we have at least one critter (damselfly) running an
OpenSolaris variant.  Nonetheless, it sure looks like a "somebody
was sloppy about frontend/backend separation" problem.

Fix ideas anyone?  I think we need to not only solve the immediate
problem (which might just take an #ifndef FRONTEND somewhere) but
also close the testing gap so we don't get blindsided like this
again.

			regards, tom lane

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