Re: Alias

[Stefen Paul <stefen4114@gmail.com>]

Thanks for the info.

So in case of using dbCreateAlias(DBENTRY *pdbentry, const char *paliasName)  , what should be passed as the 'DBENTRY *pdbentry' field ?

Also it seems that we can't put alias in database while making it using VDCT  v2.6

Thanks,

Stefen

On Wed, Aug 17, 2016 at 5:10 PM, Mark Rivers <rivers@cars.uchicago.edu> wrote:

> 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: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of Stefen Paul [stefen4114@gmail.com]
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

--

Thanks,

Stefen