Suricata

If one desires to compile and duild Suricata with support for unix-socket,
the proper way to do it (since rel 1.4.1 stable) is to add --enable-unix-socket at your configure line.

However if you do NOT want to compile with support for unix-socket and skip that step and if you have the dependecy python packages (libjansson4...) installed on the system it will show as if the unix socket functionality is enabled.

Steps to reproduce :

If you have libjansson4, libjansson-dev, python-simplejson ,
already installed on the system , then

wget http://www.openinfosecfoundation.org/download/suricata-1.4.3.tar.gz
tar -zxf suricata-1.4.3.tar.gz 
cd suricata-1.4.3/
./configure  --prefix=/usr/ --sysconfdir=/etc/ --localstatedir=/var/ --enable-non-bundled-htp  --enable-geoip --with-libnss-libraries=/usr/lib --with-libnss-includes=/usr/include/nss/ --with-libnspr-libraries=/usr/lib --with-libnspr-includes=/usr/include/nspr

Notice there is no

--enable-unix-socket

and we get -

Suricata Configuration:
  AF_PACKET support:                       yes
  PF_RING support:                         no
  NFQueue support:                         no
  IPFW support:                            no
  DAG enabled:                             no
  Napatech enabled:                        no
*  Unix socket enabled:                     yes*

  libnss support:                          yes
  libnspr support:                         yes
  libjansson support:                      yes
  Prelude support:                         no
  PCRE jit:                                no
  libluajit:                               no
  libgeoip:                                yes
  Non-bundled htp:                         yes
  Old barnyard2 support:                   no
  CUDA enabled:                            no

  Suricatasc install:                      yes

  Unit tests enabled:                      no
  Debug output enabled:                    no
  Debug validation enabled:                no
  Profiling enabled:                       no
  Profiling locks enabled:                 no

Generic build parameters:
  Installation prefix (--prefix):          /usr
  Configuration directory (--sysconfdir):  /etc/suricata/
  Log directory (--localstatedir) :        /var/log/suricata/

  Host:                                    x86_64-unknown-linux-gnu
  GCC binary:                              gcc
  GCC Protect enabled:                     no
  GCC march native enabled:                yes
  GCC Profile enabled:                     no

Thank you