Add configuration option to the base/rom extension to make the toolchain (ARMCC/GCCE) known to the preprocessor stage of romb build.
<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioPropertySheet
ProjectType="Visual C++"
Version="8.00"
Name="pyd_d"
InheritedPropertySheets=".\pyproject.vsprops;.\debug.vsprops"
>
<Tool
Name="VCCLCompilerTool"
Optimization="0"
InlineFunctionExpansion="0"
EnableIntrinsicFunctions="false"
PreprocessorDefinitions="Py_BUILD_CORE_MODULE"
RuntimeLibrary="3"
/>
<Tool
Name="VCLinkerTool"
OutputFile="$(OutDir)\$(ProjectName)_d.pyd"
LinkIncremental="1"
ProgramDatabaseFile="$(OutDir)\$(ProjectName)_d.pdb"
ImportLibrary="$(OutDir)\$(TargetName).lib"
GenerateManifest="false"
/>
<Tool
Name="VCManifestTool"
EmbedManifest="false"
/>
<Tool
Name="VCPostBuildEventTool"
CommandLine=""
/>
<UserMacro
Name="PythonExe"
Value="$(SolutionDir)python_d.exe"
/>
</VisualStudioPropertySheet>