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<H2><A NAME="SECTION00046000000000000000">
Using the system LLVM</A>
</H2>
Some problems have been reported when compiling ClamAV's built-in LLVM with recent
C++ compiler releases. These problems may be avoided by installing and using
an external LLVM system library. To configure ClamAV to use LLVM that is installed
as a system library instead of the built-in LLVM JIT, use following:
<PRE>
$ ./configure --with-system-llvm=/myllvm/bin/llvm-config
$ make
$ sudo make install
</PRE>
The argument to <code>--with-system-llvm</code> is optional, indicating the path name of
the LLVM configuration utility (llvm-config). With no argument to <code>--with-system-llvm</code>,
<code>./configure</code> will search for LLVM in /usr/local/ and then /usr.
<BR>
<BR>
Recommended versions of LLVM are 3.2, 3.3, 3.4, and 3.5. Some installations have
reported problems using earlier LLVM versions. Versions of LLVM beyond 3.5 are not
currently supported in ClamAV.
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<ADDRESS>
Cisco 2016-02-29
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