From: Hilko Bengen <bengen@hilluzination.de>
Date: Wed, 24 Jul 2019 09:36:53 +0000 (+0200)
Subject: Add documentation for --with-clang parameter
X-Git-Tag: suricata-5.0.0-rc1~155
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36998ab4cde0b69b76952cda38e68fec45ad6283;p=thirdparty%2Fsuricata.git

Add documentation for --with-clang parameter
---

diff --git a/doc/userguide/capture-hardware/ebpf-xdp.rst b/doc/userguide/capture-hardware/ebpf-xdp.rst
index 710adb38a5..96c45d3e65 100644
--- a/doc/userguide/capture-hardware/ebpf-xdp.rst
+++ b/doc/userguide/capture-hardware/ebpf-xdp.rst
@@ -97,7 +97,8 @@ To get Suricata source, you can use the usual ::
 
  ./autogen.sh
 
-Then you need to add the ebpf flags to configure ::
+Then you need to add the ebpf flags to configure and specify the Clang
+compiler for building all C sources, including the eBPF programs ::
 
  CC=clang ./configure --prefix=/usr/ --sysconfdir=/etc/ --localstatedir=/var/ \
  --enable-ebpf --enable-ebpf-build
@@ -108,7 +109,12 @@ Then you need to add the ebpf flags to configure ::
  sudo mkdir /etc/suricata/ebpf/
 
 The ``clang`` compiler is needed if you want to build eBPF files as the build
-is done via a specific eBPF backend available only in llvm/clang suite.
+is done via a specific eBPF backend available only in llvm/clang suite. If you
+don't want to use Clang for building Suricata itself, you can still specify it
+separately, using the ``--with-clang`` parameter ::
+
+ ./configure --prefix=/usr/ --sysconfdir=/etc/ --localstatedir=/var/ \
+ --enable-ebpf --enable-ebpf-build --with-clang=/usr/bin/clang
 
 Setup bypass
 ------------