[Boost-users] Problems comping Boost.Iostreams on Windows with zlib support

[Adam M]

Hi all,

I am trying to compile Boost on my Windows 2000 box, but I need to
enable the zlib support in Boost.Iostreams for the project I'm working
on.

I read through the "Getting Started" guide and the Boost.Iostreams docs,
and I have done what it says to have zlib support installed, but it's
not working.

I downloaded the zlib DLL from their website and extracted it to C:/zlib

Here's my bjam command line:
bjam "-sNO_COMPRESSION=0 -sTOOLS=vc-7_1 -sNO_ZLIB=0 -sZLIB_BINARY=zdll
-sZLIB_INCLUDE=C:/zlib/include -sZLIB_LIBPATH=C:/zlib/lib" install

When I do that, bjam says:
"Building Boost.Iostreams with zlib and gzip support disabled.
To enable zlib and gzip, consult the Boost.Iostreams documentation."

I thought maybe it was a red herring, so I let the compile finish
anyway. However, there's no "libboost_zlib-*" in my Boost/lib folder.

Can someone enlighten me as to what I've done wrong here? I'm stumped.

Thanks,
Adam





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[Jonathan Turkanis]

Adam M wrote:
> Hi all,
>
> I am trying to compile Boost on my Windows 2000 box, but I need to
> enable the zlib support in Boost.Iostreams for the project I'm working
> on.
>
> I read through the "Getting Started" guide and the Boost.Iostreams
> docs, and I have done what it says to have zlib support installed,
> but it's not working.
>
> I downloaded the zlib DLL from their website and extracted it to
> C:/zlib
>
> Here's my bjam command line:
> bjam "-sNO_COMPRESSION=0 -sTOOLS=vc-7_1 -sNO_ZLIB=0 -sZLIB_BINARY=zdll
> -sZLIB_INCLUDE=C:/zlib/include -sZLIB_LIBPATH=C:/zlib/lib" install

I'm going to have to make a note in the documentation about this, since it comes
up frequently. Compression filters are disabled whenever you set the variable
NO_COMPRESSION, *even if you give it the value 0*. In retrospect, I probably
should have given the value 0 special treatment; I'm reluctant to change it now,
however, since this is one library feature that's hard to test.

Please try omitting -sNO_COMPRESSION=0 and see what happens.

--
Jonathan Turkanis
www.kangaroologic.com