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From: Edward Diener (eldiener_at_[hidden])
Date: 2021-08-24 03:20:21

On 8/23/2021 11:08 PM, Edward Diener via Boost wrote:
> On 8/23/2021 8:42 PM, Glen Fernandes via Boost wrote:
>> On Mon, Aug 23, 2021 at 8:38 PM Edward Diener  wrote:
>>> I switched my main boost repository from the 'develop' branch to an
>>> earlier tagged boost release to try something out in that earlier
>>> release. Everything went fine with switching the main repository and all
>>> submodules. I wiped out all the header links  from the boost
>>> subdirectory and I tried b2 headers, only to get:
>>> error: Cannot create link boost\property_map\parallel\basic_reduce.hpp
>>> to
>>> libs\property_map_parallel\include\boost\property_map\parallel\basic_reduce.hpp.
>>> error: Link previously defined to another file,
>>> libs\property_map\include\boost\property_map\parallel\basic_reduce.hpp.
>>> This makes no sense since there is a completely empty boost subdirectory
>>> under my main boost repository directory. How do I fix this problem ?
>> Update your boost tree. property_map/parallel moved from the
>> property_map submodule to a new submodule (property_map_parallel) in
> There is no property_map_parallel in the tagged release I checked out,
> so I do not understand why 'b2 headers' is trying to create a link
> somewhere in the boost directory structure to a file in that library.
> Instead there is indeed a
> property_map\include\boost\property_map\parallel directory for the
> particular tagged release. This is not the latest 1.77 release I am
> trying to test but an earlier one. Somewhere it seems as if b2 has the
> links stashed away somewhere and when you try to change the branch for
> Boost and its submodules to a release tag it is still using whatever it
> had previously stashed away. I did try running 'b2 headers
> --reconfigure', hoping that would straighten b2 out but with no luck.

OK, I see it now. I have to eliminate the graph_parallel library for
this earlier tag release.

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