Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Wed, 17 Aug 2016 11:40:15 +0000

> I tried using the command alias("canonicalName","aliasName") in my code.
> I also wrote #include <dbStaticLib.h> in the code.
> But when I make my application, I get the following error:
> "unresolved external symbol _alias"

The alias command is used in a database file, not in C code.

This is from the Application Developer's Guide:
http://www.aps.anl.gov/epics/base/R3-14/12-docs/AppDevGuide.pdf

Page 107:

6.14 record – Record Instance
  6.14.1 Format
    record(record_type, record_name) {
      alias(alias_name)
      field(field_name, "field_value")
      info(info_name, "info_value")
      ...
    }
    alias(record_name, alias_name)

If you want to create an alias in C then you must use this function (page 207)

long dbCreateAlias(DBENTRY *pdbentry, const char *paliasName);

Mark

________________________________
From: [email protected] [[email protected]] on behalf of Stefen Paul [[email protected]]
Sent: Tuesday, August 16, 2016 11:59 PM
To: EPICS Tech Talk
Subject: Alias

Hi All,

I am using EPICS Base version 3.14.12.4

I read that from EPICS 3.14.11 support for alias has been added.

I tried using the command alias("canonicalName","aliasName") in my code.

I also wrote #include <dbStaticLib.h> in the code.

But when I make my application, I get the following error:

"unresolved external symbol _alias"

Am I missing something here ?

Thanks,
Stefen

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System