[Boost-users] [build] Cannot build from develop anymore

Subject: [Boost-users] [build] Cannot build from develop anymore
From: Marcel Raad (raad_at_[hidden])
Date: 2014-08-19 16:13:37

Hi,

last time I tried to build Boost from develop (a few weeks ago) with MSVC, 
it worked perfectly. Now I get the following errors on two different 
Windows 7 machines with both MSVC14 CTP3 and MSVC12.3:

boost/tools/build/src/build\virtual-target.jam:1099: in virtual-
target.register-actual-name from module virtual-target
error: Duplicate name of actual target: <pstage\lib>libboost_system-vc140-
mt-1_57.lib
error: previous virtual target { common%common.copy-libboost_system-vc140-
mt-1_57.lib.STATIC_LIB { msvc%msvc.archive-libboost_system-vc140-
mt-1_57.lib.STATIC_LIB { msvc%msvc.compile.c++-error_code.obj.OBJ { 
error_code.cpp.CPP } } } }
error: created from ./stage-proper
error: another virtual target { common%common.copy-libboost_system-vc140-
mt-1_57.lib.STATIC_LIB { msvc%msvc.archive-libboost_system-vc140-
mt-1_57.lib.STATIC_LIB { msvc%msvc.compile.c++-error_code.obj.OBJ { 
error_code.cpp.CPP } } } }
error: created from ./stage-proper
error: added properties: <asynch-exceptions>on
error: removed properties: <asynch-exceptions>off
boost/tools/build/src/build\virtual-target.jam:484: in actualize-no-scanner 
from module object(file-target)@14375
boost/tools/build/src/build\virtual-target.jam:134: in class_at_virtual-
target.actualize from module object(file-target)@14375
boost/tools/build/src\build-system.jam:720: in load from module build-system
boost\tools\build\src/kernel\modules.jam:289: in import from module modules
boost\tools\build\src/kernel/bootstrap.jam:139: in boost-build from module
boost\boost-build.jam:17: in module scope from module

Does anyone have any idea what Boost.Build is trying to tell me?