custom preprocessor?

[magland]

Is there a nice way to implement my own preprocessor (before standard C++ preprocessing) from within qmake framework.

I envision something like this in the .pro file:

SOURCES += file1.cpp
SPECIAL_SOURCES += file2.cpp
include(process_special_sources.pri)

SOURCES += file1.cpp
SPECIAL_SOURCES += file2.cpp
include(process_special_sources.pri)

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Here, process_special_sources.pri would somehow preprocess file2.cpp and create special_file2.cpp and add it to the SOURCES variable.

Does this sound feasible? Is there a better way?

Thanks!