[Octave-bug-tracker] [bug #42760] configure deteced libqrupdate cannot locate libblas.so.0, octave build anyway

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?42760>

                 Summary: configure deteced libqrupdate cannot locate
libblas.so.0, octave build anyway
                 Project: GNU Octave
            Submitted by: None
            Submitted on: So 13 Jul 2014 12:38:06 UTC
                Category: Libraries
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Build Failure
                  Status: None
             Assigned to: None
         Originator Name: Marius Brehler
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.1
        Operating System: GNU/Linux

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Details:

I am an gentoo science-overlay user, so I switched from libblas to librefblas,
same for LAPACK. That's why I needed to rebuild octave. Unfortunately,
configure detected an error, but didn't aborted the build process. Here the
extract from config.log:

configure:35899: $? = 0
configure:35908: result: yes
configure:35940: checking for slup1up in -lqrupdate
configure:35956: x86_64-pc-linux-gnu-gfortran -o conftest -O2 -pipe -Wl,-O1
-Wl,--as-needed conftest.f -lreflapack -lrefblas  -lrefblas  
-L/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3
-L/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/../../../../lib64 -L/lib/../lib64
-L/usr/lib/../lib64
-L/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/../../../../x86_64-pc-linux-gnu/lib
-L/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/../../.. -lgfortran -lm -lquadmath
-lm   -lqrupdate >&5
/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/../../../../x86_64-pc-linux-gnu/bin/ld:
warning: libblas.so.0, needed by
/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/../../../../lib64/libqrupdate.so, not
found (try using -rpath or -rpath-link)
/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/../../../../x86_64-pc-linux-gnu/bin/ld:
warning: liblapack.so.0, needed by
/usr/lib/gcc/x86_64-pc-linux-gnu/4.7.3/../../../../lib64/libqrupdate.so, not
found (try using -rpath or -rpath-link)


So, makes does its work and after all I just get a

$ octave
/usr/bin/octave-cli-3.8.1: error while loading shared libraries: libblas.so.0:
cannot open shared object file: No such file or directory

In that case, should configure abort with an error instead of just showing a
warning? Acctually it's my fault, needed to rebuild qrupdate, but anyway have
some time if ocatve just had quit building.




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