Issues Building with Boost.Build v2 using Boost 1.34.0

Lawrence Spector wrote:

> I successfully was building Boost.Python extensions
using bjam version 1
> in Boost 1.33.1.  Since the upgrade, I converted my
Jamfile to
> Jamfile.v2 and am getting the following errors when I
try to build:
> 
>  
> 
> bjam -sTOOLS=vc-8_0
-sBOOST_ROOT=C:3rdpartyboost_1_34_0 -sBUILD=debug

This is V1 syntax. You can learn about V2 syntax in
http
://boost.org/more/getting_started/index.html as well as
V2 docs:
boost.org/boost-build2

> error: Could not find parent for project at '.'
> 
> error: Did not find Jamfile or project-root.jam in any
parent directory.
> 
>  
> 
> Here's my Jamfile:
> 
>  
> 
> # This is the top of our own project tree
> 
> project-root ;

Likewise, this is V1 syntax, please refer to Python example
for V2
syntax.

> import python ;
> 
>  
> 
> extension MyLib  # Declare a Python extension
> 
> :   MyLib.cpp                    # source
> 
>     # requirements and dependencies for Boost.Python
extensions
> 
>     <template>boost/libs/python/build/extension
> 
>     ## Requirements ##
> 
>     : <include>$(MyDir)/Include
> 
>       <define>_ATL_DLL <define>_AFXDLL
> 
>       <define>_UNICODE <define>UNICODE
> 
>       <runtime-link>dynamic
> 
>     ;
> 
>  
> 
> --------------------------------
> 
>  
> 
> Here's my Jamrules:
> 
>  
> 
> path-global BOOST_ROOT : C:/3rdparty/boost_1_34_0 ;
> 
>  
> 
> project boost : $(BOOST_ROOT) ;
> 
>  
> 
> --------------------------------
> 
>  
> 
> One more note, I tried the quickstart example as
suggested in the Python
> tutorial and got this:
> 
>  
> 
>
C:3rdpartyboost_1_34_0libspythonexamplequickstart>b
jam
> toolset=msvc --verbose-test test --v2
> 
> Jamroot:17: in modules.load
> 
> rule python-extension unknown in module
>
Jamfile</C:/3rdparty/boost_1_34_0/libs/python/example/qui
ckstart>.

Please add

        using python ;

to tools/build/v2/user-config.jam, as otherwise the
'quickstart' project
won't get any python support whatsoever. Dave, do you think
some doc change,
or code change is required to solve this issue?

- Volodya


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on Sat May 26 2007, Vladimir Prus <ghost-AT-cs.msu.su>
wrote:

> Please add
>
>         using python ;
>
> to tools/build/v2/user-config.jam, as otherwise the
'quickstart' project
> won't get any python support whatsoever. Dave, do you
think some doc change,
> or code change is required to solve this issue?

I'm very surprised to see this, as I implemented and tested
python
auto-configuration myself.  The very top of
libs/python/build/Jamfile.v2 contains:

  import python ;

  if ! [ python.configured ] && ! ( --without-python
in  [ modules.peek : ARGV ] )
  {
      # Attempt default configuration of python
      import toolset : using ;
      using python ;

      if ! [ python.configured ]
      {
          ECHO "WARNING: No python installation
configured and autoconfiguration" ; 
          ECHO "         failed.  See http://www.boost.org/libs/python/doc/building.html"
 ;
          ECHO "         for configuration instructions
or pass --without-python to" ;
          ECHO "         suppress this message and
silently skip all Boost.Python targets" ;
      }
  }

...oh, maybe the order of targets in the quickstart example
got
changed at the last minute.


  # Set up the project-wide requirements that everything
uses the
  # boost_python library defined in the project whose global
ID is
  # /boost/python.
  project
    : requirements
<library>/boost/python//boost_python ;

  # Declare a Python extension called hello.
  python-extension extending : extending.cpp ;

  # Declare an executable called embedding that embeds
Python
  exe embedding : embedding.cpp /python//python ;

If it was the other way around, presumably the dependency on
the
boost_python target would have caused
libs/python/build/Jamfile.v2 to
be read.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-cons
ulting.com

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