protsym: don't refer to symbols excluded by config.

The protsym.c generated file refers to symbol variables
without regard for whether they actually exist.
Some symbol variables are defined in source files whose
object files are only linked in conditionally.

* genprotsym.txr: Update the logic to scan the Makefile
to determine which files are conditionally included, based on
what makefile flag, which is related to a preprocessor symbol.
Thus, with some hashes, for each symbolic variable we
subsequently scan, we know whether it came from a file that is
associated with a preprocessor symbol. We group the emitted
material accordingly, placing the conditionally existent
symbols into #if...#endif blocks.

0 files changed, 0 insertions, 0 deletions