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A problem debugging libraries


I'm writing software using libraries liboctave, LAPACK, and BLAS.
I added function dnrm2alt1 to blas and changed lapack to use that instead of dnrm2. When I try to debug a program using blas "break dnrm2_" works in gdb but "break dnrm2alt1_" does not. Gdb can't find function dnrm2alt1_. Can anybody tell what is wrong?

Here are outputs of some commands:

---cut here---
tohoyn@tohoyn-laptop:~/tyo/omat/aallokkeet/libinterp3d1$ update-alternatives --config libblas.so.3 There are 2 choices for the alternative libblas.so.3 (providing /usr/lib/libblas.so.3).

  Selection    Path                                    Priority   Status
------------------------------------------------------------
  0            /usr/lib/atlas-base/atlas/libblas.so.3   35        auto mode
1 /usr/lib/atlas-base/atlas/libblas.so.3 35 manual mode * 2 /usr/lib/libblas/libblas.so.3 10 manual mode

Press enter to keep the current choice[*], or type selection number:
tohoyn@tohoyn-laptop:~/tyo/omat/aallokkeet/libinterp3d1$
---cut here---
---cut here---
tohoyn@tohoyn-laptop:~/tyo/omat/aallokkeet/libinterp3d1$ update-alternatives --config liblapack.so.3 There are 2 choices for the alternative liblapack.so.3 (providing /usr/lib/liblapack.so.3).

  Selection    Path                                      Priority   Status
------------------------------------------------------------
* 0 /usr/lib/lapack/liblapack.so.3 10 auto mode 1 /usr/lib/atlas-base/atlas/liblapack.so.3 5 manual mode 2 /usr/lib/lapack/liblapack.so.3 10 manual mode

Press enter to keep the current choice[*], or type selection number:
tohoyn@tohoyn-laptop:~/tyo/omat/aallokkeet/libinterp3d1$
---cut here---
---cut here---
tohoyn@tohoyn-laptop:/usr/lib/libblas$ objdump -T libblas.so.3.0 | grep -i dnrm2
0000000000040320 g    DF .text	0000000000000011  Base        dnrm2sub_
000000000000fd50 g    DF .text	000000000000002b  Base        cblas_dnrm2
0000000000040220 g    DF .text	000000000000006b  Base        dnrm2_
0000000000040290 g    DF .text	0000000000000084  Base        dnrm2alt1_
tohoyn@tohoyn-laptop:/usr/lib/libblas$
---cut here---
---cut here---
tohoyn@tohoyn-laptop:/usr/lib/lapack$ objdump -T liblapack.so.3.0 | grep -i dnrm2
0000000000000000      DF *UND*	0000000000000000              dnrm2alt1_
tohoyn@tohoyn-laptop:/usr/lib/lapack$
---cut here---

     - Tommi H.


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