Date: Sun, 8 Jun 2008 22:18:16 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Unga <unga888@yahoo.com> Cc: Kris Kennaway <kris@FreeBSD.org>, freebsd-questions@FreeBSD.org Subject: Re: What consists FreeBSD Libc? Message-ID: <20080608221622.R9955@wojtek.tensor.gdynia.pl> In-Reply-To: <520110.33662.qm@web57009.mail.re3.yahoo.com> References: <520110.33662.qm@web57009.mail.re3.yahoo.com>
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> Its great to get it confirmed that FreeBSD Libc is only /usr/src/lib/libc/* as I presumed. > > I have compiled and installed the FreeBSD Libc into a temp directory. The size of /tmp/libc.so.7 is about 65,000 bytes smaller than /lib/libc.so.7. > > The /lib/libc.so.7 is dated May 25, 2008. I did not touch CFLAGS or anything other than DESTDIR. But I really forgot, the gcc version is different. The /lib/libc.so.7 is by gcc 4.2.1, but the /tmp/libc.so.7 is by gcc 4.3.0. May be the code generation of the latest gcc may be better. indeed it is better. while difference between gcc 3.* and 4.* is HUGE in respect of code size. after i upgraded to FreeBSD 7 from 6.3 (so gcc got upgraded to 4.*) i recompiled bash. same version, >20% smaller! finally gcc turned to rule "small code=fast code", always true on processors with at least 1 level of cache, not mentioning 2 or 3 cache levels :)
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