NAME

       Dpkg::BuildEnv - track build environment

DESCRIPTION

       The Dpkg::BuildEnv module is used by dpkg-buildflags to track the build environment
       variables being used and modified.

FUNCTIONS

       $bf->set($varname, $value)
           Update the build environment variable $varname with value $value. Record it as being
           accessed and modified.

       $bf->get($varname)
           Get the build environment variable $varname value. Record it as being accessed.

       $bf->has($varname)
           Return a boolean indicating whether the environment variable exists.  Record it as
           being accessed.

       my @list = $bf->list_accessed()
           Returns a list of all environment variables that have been accessed.

       my @list = $bf->list_modified()
           Returns a list of all environment variables that have been modified.