Problem compiling clamav?

kenw232 · 05-20-2019, 11:12 PM

I'm trying to compile the latest ClamAV 0.101.2 on an older Slackware machine. it usually compiled fine. Now when compiling I get this error:

Code:

...
CC       libclamav_internal_utils_la-regfree.lo
CC       libclamav_internal_utils_la-strlcat.lo
CCLD     libclamav_internal_utils.la
CCLD     libclamav.la
/usr/lib64/gcc/x86_64-slackware-linux/4.8.2/../../../../x86_64-slackware-linux/bin/ld: cannot find -lLLVM-3.3
collect2: error: ld returned 1 exit status
make[4]: *** [libclamav.la] Error 1
make[4]: Leaving directory `/temp/clamav-0.101.2/libclamav'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/temp/clamav-0.101.2/libclamav'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/temp/clamav-0.101.2/libclamav'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/temp/clamav-0.101.2'

What is LLVM-3.3 and why do I need it all of a sudden? I'm currently runnning 0.99.1 fine.

bathory · 05-21-2019, 02:03 AM

Quote:

What is LLVM-3.3 and why do I need it all of a sudden? I'm currently runnning 0.99.1 fine.

LLVM
If you don't need it, you can add "--enable-llvm=no" in your ./configure script.

You didn't mention your Slackware version, but you could try to install the llvm official package, and/or install clamav from Slackbuilds

Regards

scallions · 05-30-2019, 04:27 PM

LLVM for ClamAV is a JIT runtime to execute bytecode signatures. These are signatures that are functions that can do more complex things than just pattern matching and basic logical conditions.

The error you're seeing suggests that it thought it found a system-installed version of LLVM v3.3, but then when it went to link with the LLVM library it couldn't find it.

If you disable LLVM, as bathory suggested, it can still execute these signatures using ClamAV's bytecode interpreter instead of LLVM. It's a little slower than using LLVM to compile-and-run the bytecode signatures.

ClamAV also has a built-in version of LLVM if you want the speed advantage of LLVM but don't want to provide a system-installed version of LLVM. To use ClamAV's built-in version of LLVM, use "./configure --enable-llvm=yes --with-system-llvm=no"