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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, 3.5, and 3.6. Some installations have
reported problems using earlier LLVM versions. Versions of LLVM beyond 3.6 are not
currently supported in ClamAV.
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<ADDRESS>
Cisco 2018-03-28
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