Xcode compile error with PostgreSQL headers -

i trying include following postgresql headers files xcode 7.2 project:

#import "postgres.h" #import "pg_type.h" #import "libpq-fe.h"

the app written in swift. have objective-c bridging header. if import "libpq-fe.h" there no compile errors.

when try import "postgres.h" , "pg_types.h" access constants, error postgresql file: "c.h"

"typedef redefinition different types ('size_t' (aka 'unsigned long') vs 'long')

the previous definition in os x 10.11 > user/include > mactypes.h

so there 2 headers same definition:

postgresql c.h

typedef size_t size

osx mactypes.h

typedef long size

if comment out definition in postgresql file project compiles. rather not have that.

does know way around this?

i read somewhere using 'backend header' far have not been able figure out.

thanks in advance.

Ben