sbsv2/raptor/notes/tcomsupport.txt
author lorewang
Wed, 01 Dec 2010 16:05:36 +0800
changeset 715 e0739b8406dd
parent 591 22486c9c7b15
permissions -rw-r--r--
Specify extenal tool with path
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New Trace Compiler
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-------------------
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Raptor supports an updated version of the Trace Compiler which has
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an improved command-line interface that allows Raptor to specify the
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directory in which trace data should be written.  This allows MMPs to
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implement a new convention for where trace files are stored.
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The new convention prevents clashes where building the same
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source file for different MMPs would previously have resulted in two
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build tasks trying to create the same trace file (header/dictionary).
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This caused build slowdowns and also made the trace data inaccurate.
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The standard for this directory is that the last two elements of the
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path should be
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   traces/traces_<targetname>_<ext>
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e.g.
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   traces/traces_euser_dll
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The new trace compiler also creates "autogen" headers in a new location
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under epoc32/include/platform rather than epoc32/include/internal.
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Trace Headers Directory can now also be in SYSTEMINCLUDEs
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----------------------------------------------------------
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Some teams were having trouble getting qmake to generate MMPs with
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USERINCLUDEs set.  So they were specifying the trace header directory in
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their SYTEMINCLUDEs.  This change causes Raptor to look for the traces
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directory in bot SYSTEMINCLUDES and USERINCLUDES.
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Create Trace Directories During Makefile Parse
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-----------------------------------------------
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Some build engines consider it a "clash" when two jobs attempt to make the
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same directory.  This change causes some important trace output directories
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to be created during makefile parsing which removes the (small) possibility
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that they would clash during the build part.
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