# Ats\_packname?
**URL:** https://discourse.ats-lang.org/t/ats-packname/645
**Category:** Google Group
**Created:** [August 30, 2014, 4:12am UTC](https://discourse.ats-lang.org/t/ats-packname/645 "2014-08-30T04:12:20Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Shea\_Levy](https://discourse.ats-lang.org/u/Shea_Levy)
#### Post date: [August 30, 2014, 4:12am UTC](https://discourse.ats-lang.org/t/ats-packname/645/1 "2014-08-30T04:12:20Z")
Hi all,
I see many source files have ATS\_PACKNAME #defines. I can guess what to
fill in there for my projects, but how is this used?
~Shea
---
### Author:  [@gmhwxi](https://discourse.ats-lang.org/u/gmhwxi)
#### Post date: [August 30, 2014, 4:22am UTC](https://discourse.ats-lang.org/t/ats-packname/645/2 "2014-08-30T04:22:07Z")
Say you declare a function in a file XYZ.dats:
extern fun foo (…): …
The ATS compiler generates a global name for foo
using the full path of XYZ.dats, which is often hard to read.
If the flag ATS\_PACKNAME is set, then the global name for foo
is ${ATS\_PACKNAME}foo, where ${ATS\_PACKNAME} is the string
value of ATS\_PACKNAME.On Sat, Aug 30, 2014 at 12:12 AM, Shea Levy [sh...@shealevy.com](mailto:sh...@shealevy.com) wrote:
> Hi all,
>
> I see many source files have ATS\_PACKNAME #defines. I can guess what to
> fill in there for my projects, but how is this used?
>
> ~Shea
>
> –
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> .
---
### Author:  [@Shea\_Levy](https://discourse.ats-lang.org/u/Shea_Levy)
#### Post date: [August 30, 2014, 4:33am UTC](https://discourse.ats-lang.org/t/ats-packname/645/3 "2014-08-30T04:33:18Z")
I see, thank you.On Sat, Aug 30, 2014 at 12:22:07AM -0400, Hongwei Xi wrote:
> Say you declare a function in a file XYZ.dats:
>
> extern fun foo (…): …
>
> The ATS compiler generates a global name for foo
> using the full path of XYZ.dats, which is often hard to read.
>
> If the flag ATS\_PACKNAME is set, then the global name for foo
> is ${ATS\_PACKNAME}foo, where ${ATS\_PACKNAME} is the string
> value of ATS\_PACKNAME.
>
> On Sat, Aug 30, 2014 at 12:12 AM, Shea Levy [sh...@shealevy.com](mailto:sh...@shealevy.com) wrote:
>
> > Hi all,
> >
> > I see many source files have ATS\_PACKNAME #defines. I can guess what to
> > fill in there for my projects, but how is this used?
> >
> > ~Shea
> >
> > –
> > You received this message because you are subscribed to the Google Groups
> > “ats-lang-users” group.
> > To unsubscribe from this group and stop receiving emails from it, send an
> > email to [ats-lang-user...@googlegroups.com](mailto:ats-lang-user...@googlegroups.com).
> > To post to this group, send email to [ats-lan...@googlegroups.com](mailto:ats-lan...@googlegroups.com).
> > Visit this group at [http://groups.google.com/group/ats-lang-users](http://groups.google.com/group/ats-lang-users).
> > To view this discussion on the web visit
> > [https://groups.google.com/d/msgid/ats-lang-users/20140830041220.GA9476%40nixos.hsd1.nh.comcast.net](https://groups.google.com/d/msgid/ats-lang-users/20140830041220.GA9476%40nixos.hsd1.nh.comcast.net)
> > .
>
> –
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