Horton

Re: Regression tests fail with musl libc because libpq.so can't be loaded

Wolfgang Walther <walther@technowledgy.de>

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From: Wolfgang Walther <walther@technowledgy.de>
To: Andrew Dunstan <andrew@dunslane.net>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, PostgreSQL Bugs <pgsql-bugs@lists.postgresql.org>
Date: 2024-03-16T20:00:28Z
Lists: pgsql-bugs, pgsql-hackers

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  1. Allow "make check"-style testing to work with musl C library.

  2. Fix compiler warnings on MSYS2

Andrew Dunstan:
> On Alpine Linux, which uses musl libc, you have to run `make install` 
> before you can run `make check`. Have you tried that?

I can see how that could work around the problem, because the library 
would already be available in the default library path / rpath and 
LD_LIBRARY_PATH would not be needed.

However, this would only be a workaround for the specific case of 
running the regression tests, not a solution. Using LD_LIBRARY_PATH, as 
documented, would still not be possible.

In my case, I am just using docker images with Alpine to easily 
reproduce the problem. I am building with NixOS / nixpkgs' pkgsMusl. The 
order of check and install phases can't be changed there, AFAICT. The 
workaround I use right now is to temporarily patch rpath of the postgres 
binary - this will be reset during the install phase anyway. This works, 
but again is not a real solution.

Best,

Wolfgang