hi there, i following this doc http://www.howtoforge.com/setting-up-a-freeradius-based-aaa-server-with-mysql-and-management-with-daloradius install a radius server but failed. [email protected]:~/freeradius-1.1.7# dpkg-buildpackage -rfakeroot dpkg-buildpackage: warning: using a gain-root-command while being root dpkg-buildpackage: set CPPFLAGS to default value: dpkg-buildpackage: set CFLAGS to default value: -g -O2 dpkg-buildpackage: set CXXFLAGS to default value: -g -O2 dpkg-buildpackage: set FFLAGS to default value: -g -O2 dpkg-buildpackage: set LDFLAGS to default value: -Wl,-Bsymbolic-functions dpkg-buildpackage: source package freeradius dpkg-buildpackage: source version 1.1.7-1build4 dpkg-buildpackage: source changed by Chuck Short <[email protected]> dpkg-buildpackage: host architecture i386 fakeroot debian/rules clean Can't exec "fakeroot": No such file or directory at /usr/bin/dpkg-buildpackage line 477. dpkg-buildpackage: failure: fakeroot debian/rules clean failed with unknown exit code -1 [email protected]:~/freeradius-1.1.7# apt-get install build-essential -y Reading package lists... Done Building dependency tree Reading state information... Done build-essential is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 8 not upgraded.