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Indeed. It's a good idea to start with clean unpatched sources, and only add patches as you discover you need them.
The thing I forgot to tell is that newlib-1.13.0 was released a month or so ago, so using it instead of the one year old 1.12.0 could be more recommended :
----------------------- clip ----------------------------------- *** Major changes in newlib version 1.13.0:
* optimized iconv support * new configuration option to disable syscalls in newlib (e.g. sys/arm) * new configuration options controlling long long, long double support * ability of configuration options to override platform defaults * improved locking protection for file I/O functions * new reentrant functions * various fixes to allow building under FC3 and Debian Linux * cxa exit support * new platforms (e.g. crx) * new iprintf and iscanf family functions ----------------------- clip -----------------------------------
At least the ftp://mirrors.rcn.net mirror site for sources.redhat.com didn't have this yet, although the main site has had it almost a month.
The "disable syscalls in newlib (e.g. sys/arm)" meaning that putting those low-level I/O routines for the Angel monitor into 'libc.a' can now be disabled, and this way the 'arm-elf' target becoming more unreal, the earlier 'elf' being an alias for 'angel' may have caused some theological problems, people wondering whether angels and elves are just the same thing :-) Ok, separating the common functions and those belonging to the low-level I/O, memory handling etc. into 'libgloss' is a much better idea. At least the 'Redboot' monitor from Red Hat seems to be supported there.
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