On Wed, Apr 25, 2001 at 06:20:02PM -0700, David Steinberg wrote: > > Hi debian-user readers, > > Something I've been wondering for a while, and now I really need to > know: how do glibc versions relate? > > I'm running testing, which I believe is based on glibc2.2. Is this > backwards compatible with glibc2.1? If a program says it requires 2.1, > should I expect that it will work?
Yes. Glibc is backward compatible. However, and app compiled against glibc 2.2.2 will not run on glibc 2.1.3 (and sometimes not even on 2.2.1). > More generally, if I have multiple libc versions installed, how does the > system know which one it should be calling from any given app? (I > realize that this is probably a fairly big question; a pointer to a web > reference would be appreciated if its easier than answering.) You cannot have more than one libc.so.6 installed at any given time. Fortunately, you don't need to, because of the backward compatibility. -- -----------=======-=-======-=========-----------=====------------=-=------ / Ben Collins -- ...on that fantastic voyage... -- Debian GNU/Linux \ ` [EMAIL PROTECTED] -- [EMAIL PROTECTED] -- [EMAIL PROTECTED] ' `---=========------=======-------------=-=-----=-===-======-------=--=---'
