I recently tried to move my build environment to use the new modular Boost, and everything was working until I tried to compile my own project which uses Boost.Build (compiling the Boost libs I depend on worked fine, as did setting up the headers etc).

b2 output:

Performing configuration checks

    - symlinks supported       : no
    - hardlinks supported      : yes
C:/Code/modular-boost/tools/build/src/tools\builtin.jam:766: in class@linking-generator.run
*** argument error
* rule type.is-derived ( type base )
* called with: ( SHARED_LIB )
* missing argument base
C:/Code/modular-boost/tools/build/src/build\type.jam:219:see definition of rule 'type.is-derived' being called
C:/Code/modular-boost/tools/build/src/build\generators.jam:994: in try-one-generator-really
C:/Code/modular-boost/tools/build/src/build\generators.jam:1056: in try-one-generator
C:/Code/modular-boost/tools/build/src/build\generators.jam:1294: in construct-really
C:/Code/modular-boost/tools/build/src/build\generators.jam:1378: in generators.construct
C:/Code/modular-boost/tools/build/src/build\targets.jam:1532: in construct
C:/Code/modular-boost/tools/build/src/build\targets.jam:1332: in class@basic-target.generate
C:/Code/modular-boost/tools/build/src/build\targets.jam:757: in generate-really
C:/Code/modular-boost/tools/build/src/build\targets.jam:729: in class@main-target.generate
C:/Code/modular-boost/tools/build/src/build\targets.jam:272: in class@project-target.generate
C:/Code/modular-boost/tools/build/src/build\targets.jam:874: in targets.generate-from-reference
C:/Code/modular-boost/tools/build/src/build\targets.jam:1245: in generate-dependencies
C:/Code/modular-boost/tools/build/src/build\targets.jam:1302: in class@basic-target.generate
C:/Code/modular-boost/tools/build/src/build\targets.jam:757: in generate-really
C:/Code/modular-boost/tools/build/src/build\targets.jam:729: in class@main-target.generate
C:/Code/modular-boost/tools/build/src/build\targets.jam:272: in class@project-target.generate
C:/Code/modular-boost/tools/build/src\build-system.jam:707: in load
C:\Code\modular-boost\tools\build\src/kernel\modules.jam:289: in import
C:\Code\modular-boost\tools\build\src/kernel/bootstrap.jam:139: in boost-build
C:\Code\modular-boost\boost-build.jam:17: in module scope

Anyone know what could be going on here? I flailed around on my own for a bit, but got nowhere.

I added some logging (ECHO $(s) ;) and after a bunch of lines like "object(file-target)@3108" (where the number on the end is different each time) it seems it fails once it hits one of type "object(notfile-target)@1849"...

My complete project source code (along with jamfiles etc) is available here:

Thanks in advance.