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

Tom Lane:
> We have the same situation on macOS.  There, it seems to be the result
> of a "security feature" that strips DYLD_LIBRARY_PATH from the process
> environment when make executes a shell.

I'm not sure whether this explanation is sufficient for the musl case, 
because LD_LIBRARY_PATH does make a difference: The direct dependency 
(libpqwalreceiver.so) can still be found if it's moved elsewhere and 
LD_LIBRARY_PATH points at it. So clearly the LD_LIBRARY_PATH variable is 
still set after make executed the shell - it's just not in effect on the 
*indirect* dependency (libpq.so) anymore.

Best,

Wolfgang