Re: buildbot test failures

[John W. Eaton]

On 03/16/2017 02:02 AM, Olaf Till wrote:
> On Wed, Mar 15, 2017 at 05:06:34PM -0400, John W. Eaton wrote:
> > And finally, the mxe-native-on-debian build is failing because the
> > of-database package configure script is failing with the following message:
> >
> >   checking for PQconnectdb in -lpq... no
> >   configure: error: unable to find the PQconnectdb() function in pq
>
> At this point the pg_config binary should already have been found, so
> it seems you have postgresql installed. Postgresql normally comes with
> libpq...
>
> Olaf
>
> > but I think that's just a missing package problem on my build system, so
> > I'll fix that and try again.

Oh, I just realized that since this is an mxe-octave build, it's not a 
missing dependency problem that should be solved by installing something 
on the build system, but it's something that should be fixed in 
mxe-octave or the package configure script.

I see that the postgresql package has been installed by mxe-octave and 
that the database package configure script finds pg_config.  But the 
-lpq library is not found, even though it is installed (in the 
mxe-octave usr/lib directory.  The config.log file says

configure:3340: checking for PQconnectdb in -lpq
configure:3365: gcc -o conftest -g -O2   conftest.c -lpq   >&5
/usr/bin/ld: cannot find -lpq
collect2: error: ld returned 1 exit status

This build is using the system compiler which doesn't search the 
mxe-octave directories by default.  So compiler flags like CPPFLAGS, 
CFLAGS, CXXFLAGS, FFLAGS, and LDFLAGS should really be set so that 
libraries compiled and installed by mxe-octave should be found instead 
of the ones installed in system directories.

I think it should be working for the next build that is attempted 
because I installed the libpq-dev package on that buildbot worker 
system, but that's not really the right fix.

To properly test this kind of build, I think we need to do it in a VM or 
on some other system that has a minimal set of development dependencies 
installed.  I don't think it's anything that you need to fix in the 
database package.

jwe