OpenBLAS does not export xerbla_, causing undefined reference when linking ScaLAPACK #6219

Hello OpenBLAS developers,

I have encountered a linking issue when using a custom-compiled OpenBLAS installation together with ScaLAPACK 2.2.3.

The linker reports the following error:

/usr/bin/x86_64-linux-gnu-ld.bfd: ../../lib/libscalapack.so.2.2.3: undefined reference to `xerbla_'

After inspecting the exported symbols in my OpenBLAS shared library, I found the following:

000000000027e570 t xerbla_
0000000000a3c270 T xerbla_array_

The xerbla_ symbol appears as a local symbol (t), whereas xerbla_array_ is exported (T). Consequently, ScaLAPACK cannot resolve the external reference to xerbla_ during linking.

Thank you for your help.

Wilver Muriel