GOT IT. For anyone interested:
- In Solaris, run the shell with perlgcc and configure CPAN for GCC:
(Maybe some of these options are irrelevant - feel free to correct me)
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
- 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 ld.so.1 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 libodbc.so AND libodbcinst.so. It then goes on to choose libodbcinst.so which is the incorrect shared object.