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Subject: Re: [boost] boost include directory question
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2018-07-21 18:53:49


On 07/21/2018 12:29 PM, Robert Ramey via Boost wrote:
> On 7/21/18 10:09 AM, Steven Watanabe via Boost wrote:
>> On 07/21/2018 10:19 AM, Robert Ramey via Boost wrote:
>> <snip>
>> Windows does support symlinks, depending on the
>> version and permissions.  As far as I am aware,
>> junction+hardlink should work in Vista or later,
>> so I'm somewhat surprised that you're seeing copies.
> Here's a little more background.
> I develop on a mac with OSX.  <snip>
> So far so good. Now it comes to windows.
> I installed Parallels.  This loads a windows os on my mac-mini. A very
> good product - really annoying and hateful company to deal with.  After
> the normal windows bs, install, updates, etc.... I've got an up and
> running windows system on my mac.  I do whatever it took to share my mac
> file system on my windows "machine"

  Okay. This makes things a lot more complex, as
you're now accessing the filesystem from two
different OSes which likely have different
capabilities. It wouldn't surprise me if symlinks
didn't work with this setup.
  I have similar issues with VMWare, but I've found
that I can get around it by running `b2 headers` on
the host OS before building anything on the guest.
This works because the headers will be up-to-date
in the guest, so b2 won't try to update them, thus
bypassing the problem.

> Now my windows wouldn't run until I blew away "something" root/boost and
> maybe root/bin.v2 and invoked b2 headers.
> <snip>
> Unfortunately switching between these environments is sort of pain
> subject to ... - I'm not sure.  I'm sort of guess that the system has
> some sort of "memory" hidden inside of bin.v2 but I don't really know.

There's this:
- symlinks supported : yes (cached)

"cached" means that it's a result that was remembered from
a previous run.

> Then there is the fact that I did this a more than a year ago and I
> don't know that b2 hasn't changes.  Actually I don't even know if b2 is
> built on the debug or master branch or whether or not it makes a
> difference.
> Oh - I use the master branch of Boost to do my testing so that I'm not
> stuck chasing down everyone elses bugs in their libraries on the debug
> branch. Occasionally, I pull the master branch.  I have been running b2
> headers when I do this.  This seems to be necessary but again I have no
> way of knowing.
> BTW when I run b2 headers on my mac - it fails because it finds a bunch
> of .DS files all over the place.  I have to delete these by hand before
> I run b2 headers.

  That's annoying. b2 is just treating them as ordinary files
which causes a conflict. If you tell me an appropriate glob
pattern, I can exclude them. Or, perhaps, it would be better to
use a glob for header names instead of assuming that all files
are important.

In Christ,
Steven Watanabe

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