Help in fixing my b2

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Hi Everyone,
I was redirected to this email list for help with b2. I am trying to build
the docs for Boost.Optional, and in all honesty, I do not know if I have a
problem with b2 o bjam or BoostBook or QuickBook or QuickDoc or xsltproc.

First, I am getting an error message:

>
> error: mismatched versions of B2 engine and core
> error: B2 engine (b2) is 4.4.1
> error: B2 core (at /home/andrzej/Repos/boost/tools/build/src) is 4.9-git
>

This used to work until I recently made a `git pull --rebase` on Boost
repo, which apparently put out of sync components "B2 engine" and "B2
core", whatever they may be. I have a `b2` in my /usr/bin -- I do not know
where from, as I didnt know it comes with Fedora distributions (I thought
it was Boost internal tool) -- of version 4.4, and I have another one in
tools/build of version 4.9. I have been instructed to "rebuild the b2
engine executable", but I do not know how to do it, and which executable,
as apparently I have got two. I would appreciate any detailed instructions
on how to do it.

Regards,
&rzej;

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<div dir=3D"ltr"><div>Hi Everyone,</div><div>I was redirected to this email=
 list for help
 with b2. I am trying to build the docs for Boost.Optional, and in all=20
honesty, I do not know if I have a problem with b2 o bjam or BoostBook=20
or QuickBook or QuickDoc or xsltproc.</div><div><br></div><div>First, I am =
getting an error message:</div><blockquote class=3D"gmail_quote" style=3D"m=
argin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left=
:1ex"><div><br></div><div><span>error: mismatched versions of B2 engine and=
 core<br>error: B2 engine (b2) is 4.4.1<br>error: B2 core (at /home/andrzej=
/Repos/boost/tools/build/src) is 4.9-git</span></div></blockquote><div><spa=
n><br></span></div><div><span>This
 used to work until I recently made a `git pull --rebase` on Boost repo,
 which apparently put out of sync components &quot;B2 engine&quot; and &quo=
t;B2 core&quot;,=20
whatever they may be. I have a `b2` in my /usr/bin -- I do not know=20
where from, as I didnt know it comes with Fedora distributions (I=20
thought it was Boost internal tool) -- of version 4.4, and I have=20
another one in tools/build of version 4.9. I have been instructed to=20
&quot;rebuild the b2 engine executable&quot;, but I do not know how to do i=
t, and=20
which executable, as apparently I have got two. I would appreciate any=20
detailed instructions on how to do it.</span></div><div><span><br></span></=
div><div><span>Regards,</span></div><div><span>&amp;rzej;</span></div></div=
>

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