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Build instructions are statements in the udiprops.txt file that are evaluated at compile time of the driver modules. A discussion of all the compile time options can be found in the UDI Core Specification under Build-Only Properties.
In the sample drivers, the compile_options statement is used to define values used in the driver source files listed in the source_files statements.
| cmos_udi.c sample driver udiprops.txt (cont.) |
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compile_options -DCMOS_GIO_META=1 -DCMOS_BRIDGE_META=2 source_files udi_cmos.c |
| pseudod.c sample driver udiprops.txt (cont.) |
compile_options -DPSEUDO_GIO_META=1 -DPSEUDO_BUS_META=2 source_files pseudo.c pseudo.h |
The values used for these constants correspond to the values given in the meta statements in udiprops.txt; see ``Module and region declarations''. They are also used in the source files; see ``Control block indexes and structures''.