Oracle forms API - c-based compile error

Question

i am trying to compile a c-based forms api program on Linux x86_64

using command

gcc -m32 -I"$ORACLE_HOME/forms/api" -L"$ORACLE_HOME/forms/lib" -L"$ORACLE_HOME/lib" -ld2f   fapi.c       

it fails with a bunch of undefined references.

$ORACLE_HOME/lib/libd2f.so: undefined reference to `sifom'
$ORACLE_HOME/lib/libd2f.so: undefined reference to `idfrsti'
$ORACLE_HOME/lib/libd2f.so: undefined reference to `simmal'

etc...

does anyone know the list of all the library files i need to add?