Erwan MARC <em...@estar-system.com> wrote: >> PS for Jörg, I'll check if we have the option -lm or not, what is >> the impact?
libgcc.a contains helper functions for floating-point math which are mostly auto-generated and thus not quite efficient. libm.a, while it's not its normal purpose, overrides a number of these functions with more efficient versions. It's been a historical mistake to separate libm.a from libc.a at all. By the time avr-libc started, there was no reason other than ``because it's always been that way'' to stuff the math functions into a separate library. (When Unix started on the PDP-11, there have probably been resource exhaustion reasons for this separation, to keep the linker's job doable at all.) -- cheers, J"org .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-) _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
