This software is distributed under the following license:
http://sflow.net/license.html

To compile and install, try this:

% make
% sudo make install
% sudo make schedule

To compile features that can be enabled in the config:

% make FEATURES="ALL"

Or you can specify them individually:

% make FEATURES="ULOG NFLOG PCAP DOCKER KVM OVS"

Edit /etc/hsflowd.conf for configuration.  The options are
described in the comments there.

Module dependencies var from platform to platform, but
the following packages usually have to be installed before
the compilation will work:

 NFLOG:  libnfnetlink-dev(el)
 PCAP:  libpcap-dev(el)
 KVM: libvirt-dev(el) libxml2-dev(el)
 NVML: libnvidia-ml nvml.h
 XEN: libxenctrl libxenstore xenctrl.h xenstore.h

To start the daemon, run:

% sudo service hsflowd start

and check the syslog for errors.

To run in the debugger, change the Makefile to compile with -g,
recompile, and then run with the "-dd" command line option to
prevent daemonization:

% sudo gdb hsflowd
gdb> set args -dd
gdb> r

For more detailed logging,  using -ddd or -dddd.

To build an rpm from a git repo, try:

% make rpm FEATURES="..."

To build an rpm from a sources tarball hsflowd-<ver>.tar.gz,
copy the tarball to your rpm SOURCES directory then run:

% rpmbuild -ba hsflowd.spec --define _FEATURES "..."

The rpm will be written to /usr/src/redhat/RPMS/<ARCH>/
(where <ARCH> is i386 or x86_64 or ...)

To build a Debian package, try:

% make deb FEATURES="..."

The hsflowd-<version>-<release>.deb package should appear
in the current directory.