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Re^3: "referenced symbol not found" testing DBD::ODBC against unixODBC

by arielCo (Sexton)
on Apr 17, 2013 at 00:07 UTC ( #1029029=note: print w/replies, xml ) Need Help??

in reply to Re^2: "referenced symbol not found" testing DBD::ODBC against unixODBC
in thread "referenced symbol not found" testing DBD::ODBC against unixODBC

GOT IT. For anyone interested:

  1. In Solaris, run the shell with perlgcc and configure CPAN for GCC:
    o conf make /usr/sfw/bin/gmake o conf make_arg '' o conf make_install_arg '' o conf make_install_make_command '/usr/sfw/bin/gmake' o conf mbuild_arg '' o conf mbuild_install_arg '' o conf tar /usr/sfw/bin/gtar
    (Maybe some of these options are irrelevant - feel free to correct me)
  2. In makepl_arg:
    • Don't add 'LIBS=-L /your_unixodbc_home/lib'; use '-o /your_unixODBC_home', or just export UNIXODBC=/your_unixODBC_home before running the CPAN shell - Makefile.PL will set -L and -l for you.
    • To avoid using the dreaded LD_LIBRARY_PATH, add 'LDDLFLAGS="-Wl,-rpath,your_unixODBC_home/lib -G"' to makepl_arg. This will tell GCC to tell ld to add the location of your ODBC libraries to the runtime path (RPATH). Because you're overriding the LDDLFLAGS, you need to add "-G" so that GCC produces a shared object.
    • So, this incantation should work:

       o conf makepl_arg 'LDDLFLAGS="-G -Wl,-rpath,/your_unixodbc_home/lib" -o /your_unixodbc_home'

Note: in my setup, I had to issue o conf commit, exit the shell and run it again for these changes to work. Don't ask.

Note 2: Turns out that the relocation error happened because was loading the *wrong* library from /my_unixodbc_home/lib. I got the clue from 'Enabling ODBC support in Perl with Perl DBI and DBD::ODBC' by Easysoft:

The undefined symbol SQLParamData is reported by the dynamic linker as the first symbol it looked for but could not find.

This happens when building DBD::ODBC with unixODBC because the Makefile.PL is now incompatible with newer unixODBC releases. The Makefile.PL searches ODBCHOME/lib for *odbc*.* and finds AND It then goes on to choose which is the incorrect shared object.

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