Cross Compiling Bro


You need three things on the host system:

  1. The Bro source tree.
  2. A cross-compilation toolchain, such as one built via crosstool-NG.
  3. Pre-built Bro dependencies from the target system. This usually includes libpcap, zlib, OpenSSL, and Python development headers and libraries.

Configuration and Compiling

You first need to compile a few build tools native to the host system for use during the later cross-compile build. In the root of your Bro source tree:

./configure --builddir=../bro-buildtools
( cd ../bro-buildtools && make binpac bifcl )

Next configure Bro to use your cross-compilation toolchain:

./configure --toolchain=/home/jon/x-tools/RaspberryPi-toolchain.cmake --with-binpac=$(pwd)/../bro-buildtools/aux/binpac/src/binpac --with-bifcl=$(pwd)/../bro-buildtools/src/bifcl

Here, the toolchain file a CMake toolchain file. It might look something the following (using a Raspberry Pi as target system):

# Operating System on which CMake is targeting.

# The CMAKE_STAGING_PREFIX option may not work.
# Given that Bro is configured:
#   `./configure --prefix=<dir>`
# The options are:
#   (1) `make install` and then copy over the --prefix dir from host to
#       target system.
#   (2) `DESTDIR=<staging_dir> make install` and then copy over the
#       contents of that staging directory.

set(toolchain /home/jon/x-tools/arm-rpi-linux-gnueabihf)
set(CMAKE_C_COMPILER   ${toolchain}/bin/arm-rpi-linux-gnueabihf-gcc)
set(CMAKE_CXX_COMPILER ${toolchain}/bin/arm-rpi-linux-gnueabihf-g++)

# The cross-compiler/linker will use these paths to locate dependencies.


If that configuration succeeds you are ready to build:


And if that works, install on your host system:

make install

From there, you can copy/move the files from the installation prefix on the host system to the target system and start running Bro as usual.

Next Page

Quick Start Guide

Previous Page

Detailed Version History

Copyright 2016, The Bro Project. Last updated on September 17, 2018. Created using Sphinx 1.7.5.