On Tuesday 30 October 2001 02:52 pm, you wrote:
> > One possiiblity: IIRC, if you do an strace of a progrma using the dynamic
> > linker using say, libfoo, it will be checking for something like
> > i686/mmx/libfoo, i686/libfoo first..Perhaps this can be used?
>
> Sorry, too much technical for me :-(
OK, let's clarify. Here is a pasting of the strace (system call log), for a
program:
open("/usr/lib/qt2/lib/libICE.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("i686/mmx/libICE.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("i686/libICE.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("mmx/libICE.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("libICE.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/usr/X11R6/lib/libICE.so.6", O_RDONLY) = 3
THis is the linked trying to open a library. Notice that the linked is trying
to load an i686/MMX optimized version of the library first, although not in
particularly nice places (looks like a relative dir from here).
This might be useful for packaing, if one simply includes multiples copies of
performance-sensitive libraries, such as avifile, and let's ld.so pick the
right one. Unfortunatel,y this probably doesn't work for dlopen()'ed
libraries.
