Actually, what that is saying is it cannot find libodbc.so in the list of paths provided for linking (-L/usr/lib64). That is strange as an earlier post showed:
042 odbc_config reports --prefix=/usr
043 odbc_config reports --include-prefix=/usr/include
044 odbc_config reports --lib-prefix=/usr/lib64
045 ODBC INC dir set to /usr/include via odbc_config
046 ODBC LIB dir set to /usr/lib64 via odbc_config
047 Using ODBCHOME /usr
Look for libodbc* files in /usr/lib64 to see what exists. Better still, post ls -la /usr/lib64/libodbc* here.