On Fri, Mar 23, 2007 at 12:51:03AM +0100, Axel Thimm wrote:
On Fri, Mar 23, 2007 at 12:30:00AM +0100, Patrice Dumas wrote:
> I am searching for a program that would allow to compare 2 libs or a lib
> and an application, find the binary interface differences and display
> them conveniently. Does something like that exist? I think that it would
> be very convenient to help maintaining ABI compatibility in EPEL packages.
That would be a nice tool, but how would it help EPEL? It would rather
I maintain library foo in epel. Upstream issue a new version. I use
the ABI comparison to patch the new version to re-add the symbols
needed to keep ABI compatibility. But maybe this is never that
For creating such a tool the nearest you could get would be to
dump and sort the symbols including function signatures if available
and compare them.
Indeed i am searching something that does that.
But C does not encode arguments to functions into
the symbols so large part of the ABI information is implicit. But at
least you would get part of the ABI to check.
So that part of the ABI is only visible in header files, or by seeing
a segfault at runtime?