[Boost-users] boost python macro hell

Subject: [Boost-users] boost python macro hell
From: Neal Becker (ndbecker2_at_[hidden])
Date: 2010-01-14 10:42:30

Probably OT, but I'm trying to generate modules programmatically.  Each 
module with be generated using -DSIMCASE=n and will create a module called 
ldpc_n.so.

I can't get this macro to work, this is my latest try:

#define SIMCASE 10
#define NAME ldpc_ ## SIMCASE
#define MODULE_START BOOST_PYTHON_MODULE (NAME)

Later I have:
MODULE_START {
...
}

Results in:
In file included from ldpc_x.cc:12:
ldpc.cc: In function 'void initldpc_SIMCASE()':
ldpc.cc:100: error: 'init_module_ldpc_SIMCASE' was not declared in this 
scope

Looks like 2 problems there: 1 is that 'SIMCASE' did not have it's #defined 
value substituted, second is that (as evidenced by the error) this 
interacted wierdly with the BOOST_PYTHON_MODULE macro.