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Old 09-01-2012, 03:00 PM   #1
twobob
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forcing the right version via flags. More dumb questions

I have a question, probably been asked before but I will ask it again as I didn't find the answer yet.

Looking on a binary that has been built with a later TC to attempt to run on the Kindle 3

We can see that this example here will have an issue...

root@kindle:root> readelf -s /mnt/us/usr/lib/libavformat.so.53 | grep "2\.7"
Quote:
113: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (9)

so my question is threefold

a) what flags would cover - say - a case to convince the pre-processor to pull a 2.6 ver of isoc99_sscanf if we were to recompile it from source but with a Later TC.

b) how can I learn the general process thought process behind determining this to prevent asking dumb questions like this one

c) Is this a dumb question. ie. you just can't. or something else I didn't consider fully.

Also like to point out that __isoc99_sscanf@GLIBC_2.7 is just an example and I'm not actually atttempting to recompile that file. well, I am as it happens, but that is irrelevant to this question - which is one about general principles.

Thanks.

Last edited by twobob; 09-01-2012 at 03:19 PM.
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