Hi all,
The "Auto dependecy generation" mechanism can be used to generation
dependency list for a target automatically. For a C file this can be
done by invoking gcc with the -MM switch. So in a make file we normally
have the following rule to generate dependency files and later include them:
-------------------------------------------------------------------------------------
%.d: %.c
@set -e; rm -f $@; \
$(CC) -M $(CPPFLAGS) $< > $...@.$$$$; \
sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $...@.$$$$ > $@; \
rm -f $...@.$$$$
sources = foo.c bar.c
include $(sources:.c=.d)
-------------------------------------------------------------------------------------
When using the above facility how can use the "Target specific variable
values" facility?
For example, I would want the CPP flag -DLINUX to be defined for foo.c only.
Regards,
mwnn
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