XXX Builds a Microsoft Visual C++ precompiled header. Calling this builder method returns a list of two targets: the PCH as the first element, and the object file as the second element. Normally the object file is ignored. This builder method is only provided when Microsoft Visual C++ is being used as the compiler. The PCH builder method is generally used in conjuction with the PCH construction variable to force object files to use the precompiled header: env['PCH'] = env.PCH('StdAfx.cpp')[0] Builds a Microsoft Visual C++ resource file. This builder method is only provided when Microsoft Visual C++ or MinGW is being used as the compiler. The .res (or .o for MinGW) suffix is added to the target name if no other suffix is given. The source file is scanned for implicit dependencies as though it were a C file. Example: env.RES('resource.rc') The Microsoft Visual C++ precompiled header that will be used when compiling object files. This variable is ignored by tools other than Microsoft Visual C++. When this variable is defined SCons will add options to the compiler command line to cause it to use the precompiled header, and will also set up the dependencies for the PCH file. Example: env['PCH'] = 'StdAfx.pch' The command line used by the &b-PCH; builder to generated a precompiled header. The string displayed when generating a precompiled header. If this is not set, then &cv-PCHCOM; (the command line) is displayed. This variable specifies how much of a source file is precompiled. This variable is ignored by tools other than Microsoft Visual C++, or when the PCH variable is not being used. When this variable is define it must be a string that is the name of the header that is included at the end of the precompiled portion of the source files, or the empty string if the "#pragma hrdstop" construct is being used: env['PCHSTOP'] = 'StdAfx.h' The resource compiler used to build a Microsoft Visual C++ resource file. The command line used to build a Microsoft Visual C++ resource file. The string displayed when invoking the resource compiler to build a Microsoft Visual C++ resource file. If this is not set, then &cv-RCCOM; (the command line) is displayed. The flags passed to the resource compiler by the RES builder.