I am trying to port a working app from the Oracle 10 client to the Oracle 12 client. It's written in Microsoft C and built using nmake. I have installed the Oracle 12 client/development tool software. It compiles fine but when linking in comes back with the error
error LNK2019: unresolved external symbol _sqlcxt referenced in function _logon
I get the same error for _sqlbuft and _sqlorat.
I am specifying orasql12.lib and oci.lib. Have these moved to another library? What lib am I missing?