On Sat, 15 Oct 2005, Peter Matulis wrote: > What is the use of specifying the 'r' switch when using the 'a' > switch? > > # portupgrade -ar > > This says to upgrade all ports plus the ones that depend on all > those ports. Am I missing something? Wouldn't "the ones that > depend" be upgraded anyway?
Not necessarily. For instance: package P might use library L. A change in L might alter the size and layout of structures exposed to P. The source-level API of L is unchanged; the binary-level ABI is altered. So whilst the source code of P might not have changed, it might (for instance) be using a macro defined by a header in L that will look at the wrong offset in the new structure. These kinds of ABI compatibility problems can be fixed by recompilihng P. -- jan grant, ILRT, University of Bristol. http://www.ilrt.bris.ac.uk/ Tel +44 (0)117 3317661 http://ioctl.org/jan/ Strive to live every day as though it was last Wednesday. _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
