Hi Scott,
On 02.05.2014 19:57, Scott Kitterman wrote:
On Friday, May 02, 2014 19:46:50 Andreas Cadhalpun wrote:
in the branch aca_llvm I have created a patch to build clamav with the
system LLVM.
I think that would be good, because of security and other bugfixes in
LLVM (the internal version is based on 2.8, while testing has 3.3 as
default and 3.4 available).
As a bonus, this drastically reduces build time.
To fix FTBFS with new versions, mostly header names had to be changed,
but two functions were removed, that I couldn't find a replacement for:
* Attribute::constructStackAlignmentFromInt used in
libclamav/c++/bytecode2llvm.cpp
* JITExceptionHandling (defined as DwarfExceptionHandling) used in
libclamav/c++/bytecode2llvm.cpp
I don't think this is a major problem, but
constructStackAlignmentFromInt was added to fix a bug [1]. Hopefully
this is fixed now in LLVM directly.
What do you think about this?
I think using the system LLVM is a great step forward. Before we switch,
however, I would send the change upstream for review. You can ask them about
the constructStackAlignmentFromInt issue at the same time.
I just filed a bug about this upstream [1].
This would also solve the array-bounds and pointer-cast-size-mismatch issues
identified in http://qa.debian.org/bls/packages/c/clamav.html
Yes, that would be another good side effect.
I suspect they would appreciate the patch since using the system LLVM (or at
least updating to a newer one) is definitely in their plans.
I hope so. LLVM 2.8 is really a bit outdated (from 2010).
Best regards,
Andreas
1: https://bugzilla.clamav.net/show_bug.cgi?id=10981
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