Re: How to include the header files effectively

On 2019-Apr-12, Andy Fan wrote:

> for example,  when I want the LOCKTAG in .c file,   which is defined in
> "storage/lock.h".  then I wrote the code like this:
> 
> #include "storage/lock.h"
> ...
> 
> /../../../src/include/storage/lockdefs.h:50:2: error: unknown type name
>       'TransactionId'
>         TransactionId xid;                      /* xid of holder of AccessExclusiveLock */

What are you trying to do?  Your .c file must include "postgres.h"
before any other header file.  There should be no other dependencies.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
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