Unless you are providing the information that you were asked for, it is unlikely anyone will be able to help.

I agree with Markus in comment #7.  First, the configure script should figure out the correct compiling and linking flags for something as basic as the C++ STL.  Intervening in that selection is likely to cause more problems rather than less.  Second, for Fortran or for C programs, you shouldn't link in the C++ standard library.  In the case of Fortran it doesn't make any sense.  For a C program you would need to link in libc, not stdc++.

Can you try without those additions?

Also, from comment #4, can you capture the output of configure and upload that to this bug report?  That will help us check whether the flags are set correctly.

Hi,

A bit of progress here. I managed to remove the linking errors about Lapack libraries (at least for now) by specifying variables along configure command as shown below:

./configure CFLAGS="-lstdc++" FFLAGS="-lstdc++ -std=c++11" LDFLAGS="-L/path_to/fftw-3.3.10/lib -L/path_to/openblas-0.2.20/lib" CPPFLAGS="-I/path_to/fftw-3.3.10/include -I/path_to/openblas-0.2.20/include" --prefix=/path_to/octave-9.2.0 --with-qt=5 --with-blas="-lopenblas" --with-lapack="-llapack" --without-curl --disable-docs --without-z

However I still get the error:

/bin/ld: libinterp/.libs/liboctinterp.so: undefined reference to `std::ios_base_library_init()'

Any hint? Hope it is the last one.

Stefano

A little bit of progress.  It does seem that the linker is not able to find an adequate library with the correct functions.

Could you run your configure script and capture stdout/stderr and upload the file?  In particular, the configure script finishes by printing a list of the flags that it has determined are necessary for compilation.  I want to see that those are correct for your situation.

Since it is the linker, rather than runtime, that is failing I think the solution will not be with LD_LIBRARY_PATH.  It might be with LIBS or LDLIBS.  According to the documentation for make, the default linker command is

‘$(CC) $(LDFLAGS) n.o $(LOADLIBES) $(LDLIBS)’

So, it would seem that extra libraries, such as '-lm' for math, would be put in LDLIBS variable.  LOADLIBES is deprecated and sholdn't be used.

Using --without-z I don't see the error about uncompress2, thanks for helping on this. However, the other two errors persist, the one about lapack functions and the one about std::ios_base_library_init()

How can I debug this? Should I specify LD_LIBRARY_PATH and LIBS with the directories of the openblas library?

I am trying to install Octave 9.2.0 in a specific directory since I'm not root, including BLAS, LAPACK and FFT3W. I work on RedHat 7.

The BLAS and LAPACK libraries are available under openblas which I have.(It's a system library and is found by ./configure command).

I've manually installed the FFT3W libraries under a specific directory, so these are available too. They are found by ./configure command)

The command to configure Octave is the following:

./configure --prefix=/path_to/octave-9.2.0 --with-qt=5 --with-blas=/path_to/openblas-0.2.20/lib/libopenblas.so --with-lapack=/path_to/openblas-0.2.20/lib/libopenblas.so --with-fftw3-includedir=/path_to/fftw-3.3.10/include --with-fftw3-libdir=/path_to/fftw-3.3.10/lib --with-fltk=/path_to/fltk-1.3.8 --with-fftw3f-includedir=/path_to/fftw-3.3.10/include --with-fftw3f-libdir=/path_to/fftw-3.3.10/lib --with-z-includedir=/path_to/zlib-1.2.11/include --with-z-libdir=/path_to/zlib-1.2.11/lib --without-curl --disable-docs

If I don't specify the zlib library I will get an error about the function "uncompress2" during the make process.

Below the errors after typing make

/bin/ld: liboctave/.libs/liboctave.so: undefined reference to `zgetri_'

..other libraries...

/bin/ld: libinterp/.libs/liboctinterp.so: undefined reference to `std::ios_base_library_init()'

/bin/ld: libinterp/.libs/liboctinterp.so: undefined reference to `uncompress2@ZLIB_1.2.9'

I tried checking: ldd libinterp/.libs/liboctinterp.so and ldd liboctave/.libs/liboctave.so and I don't see any lib missing.