newlib PIC24/30 port
Mon Feb 9 16:13:00 GMT 2009
sÃ¶ndagen den 8 februari 2009 skrev Leo Singer:
> You might have noticed that many of the symbols in Microchip's
> standard library are prefixed with __attribute__ ((weak)). This makes
> it possible for user code to override standard library routines and
> syscalls. At my company, we have a source file called "iosupport.c"
> for each board that defines the open, read, write, and close routines.
There is another thread here discussing this weak thing. Since the libraries
are normally last in the gcc/ld command, if you include iosupport.o before
the libraries, there is no need for weak definitions for this purpose, as I
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