[Boost-users] Cannot build Boost

Subject: [Boost-users] Cannot build Boost
From: Ondřej Majerech (oxyd.oxyd_at_[hidden])
Date: 2010-11-19 17:37:47

Hello,

I'm trying to build Boost libraries from source (I want to use
Boost.Python and Boost.Test, also I want to use a compiler other than
my system one).

I grabbed the boost_1_45_0.tar.bz2 and boost-jam-3.1.18.tgz tarballs.
Built Jam by doing ./build.sh gcc and then copied the bjam executable
to my ~/bin directory which is in $PATH.

Then I went to the boost_1_45_0/tools/build/v2/example/hello
directory, ran bjam, the example compiled and I was able to run it
successfuly. I created ~/boost-build.jam file with

boost-build /usr/home/oxyd/development/boost/boost_1_45_0/tools/build/v2 ;

in it.

Then I came back to the boost_1_45_0 directory. As per the
instructions --
http://www.boost.org/doc/libs/1_45_0/more/getting_started/unix-variants.html#invoke-bjam
-- I ran bjam and got an error:

~/development/boost/boost_1_45_0 > bjam toolset=gcc stage
Class top-level-target already defined
zsh: abort      bjam toolset=gcc stage

I have only Googled a little info on this error -- in fact, the only
useful hit is this:
http://lists.boost.org/boost-build/2009/05/21793.php . I guess I can
just as well provide the info asked for in that post:

~/development/boost/boost_1_45_0 > grep 'class top-level-target' Jamroot | wc -l
       1

-- exactly one occurence of class top-level-target there. The only
Jam-related file in the directory is Jamroot. Running with
--debug-loading I get the lovely output that I attached to this mail.

Additionally, I'm running FreeBSD 8.1-RELEASE, and I want to use GCC
4.5.2 installed from Ports (system compiler is GCC 4.2.1).

Thanks for any thoughts on the issue,

Ondra