[Boost-build] <implicit-dependency> not working on Windows

Subject: [Boost-build] <implicit-dependency> not working on Windows
From: Ian Emmons (iemmons_at_[hidden])
Date: 2008-12-19 16:23:20

I have a jam file that works on Macintosh, and I'm now porting it to  
Windows.  This jam file generates some header files that are  
subsequently used in the compilation of a lib target.  The relevant  
excerpt of my jam file is as follows:

==================

lib Parliament
    :  [ glob *.cpp : Utf8StaticInitGen.cpp ]
       /site-config//BerkeleyDB
       /site-config//JavaJNI
    :  <include>.
       <define>BUILDING_KBCORE
       <define>PARLIAMENT_RSRC_AS_UTF16
       <define>_REENTRANT
       <threading>multi
       <implicit-dependency>parliament/generated/ 
com_bbn_parliament_jni_Config.h
       <implicit-dependency>parliament/generated/ 
com_bbn_parliament_jni_HiResTimer.h
       <implicit-dependency>parliament/generated/ 
com_bbn_parliament_jni_KbInstance.h
       <implicit-dependency>parliament/generated/ 
com_bbn_parliament_jni_StmtIterator.h
    :  # default build
    :  <include>.
       <define>PARLIAMENT_RSRC_AS_UTF16
       <define>_REENTRANT
       <threading>multi
    ;

explicit parliament/generated/com_bbn_parliament_jni_Config.h ;
explicit parliament/generated/com_bbn_parliament_jni_HiResTimer.h ;
explicit parliament/generated/com_bbn_parliament_jni_KbInstance.h ;
explicit parliament/generated/com_bbn_parliament_jni_StmtIterator.h ;

h parliament/generated/com_bbn_parliament_jni_Config.h :  
Parliament.jar ;
h parliament/generated/com_bbn_parliament_jni_HiResTimer.h :  
Parliament.jar ;
h parliament/generated/com_bbn_parliament_jni_KbInstance.h :  
Parliament.jar ;
h parliament/generated/com_bbn_parliament_jni_StmtIterator.h :  
Parliament.jar ;

==================

The problem I'm running into is that when bjam builds the lib target,  
it does not invoke the four targets that generate the header files  
first, in spite of the <implicit-dependency> declarations.  However,  
if I explicitly invoke bjam on those targets first, bjam correctly  
builds them and a subsequent invocation of bjam on the lib target will  
succeed.

Any idea why the <implicit-dependency> declarations on the lib target  
aren't working?

Thanks,

Ian