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Dpkg::BuildFlags(3)              libdpkg-perl              Dpkg::BuildFlags(3)

NAME
       Dpkg::BuildFlags - query build flags

DESCRIPTION
       The Dpkg::BuildFlags object is used by dpkg-buildflags and can be used
       to query the same information.

METHODS
       $bf = Dpkg::BuildFlags->new()
           Create a new Dpkg::BuildFlags object. It will be initialized based
           on the value of several configuration files and environment
           variables.

       $bf->load_vendor_defaults()
           Reset the flags stored to the default set provided by the vendor.

       $bf->load_system_config()
           Update flags from the system configuration.

       $bf->load_user_config()
           Update flags from the user configuration.

       $bf->load_environment_config()
           Update flags based on user directives stored in the environment.
           See dpkg-buildflags(1) for details.

       $bf->load_maintainer_config()
           Update flags based on maintainer directives stored in the
           environment. See dpkg-buildflags(1) for details.

       $bf->load_config()
           Call successively load_system_config(), load_user_config(),
           load_environment_config() and load_maintainer_config() to update
           the default build flags defined by the vendor.

       $bf->set($flag, $value, $source, $maint)
           Update the build flag $flag with value $value and record its origin
           as $source (if defined). Record it as maintainer modified if $maint
           is defined and true.

       $bf->set_feature($area, $feature, $enabled)
           Update the boolean state of whether a specific feature within a
           known feature area has been enabled. The only currently known
           feature areas are "qa", "sanitize", "hardening" and "reproducible".

       $bf->strip($flag, $value, $source, $maint)
           Update the build flag $flag by stripping the flags listed in $value
           and record its origin as $source (if defined). Record it as
           maintainer modified if $maint is defined and true.

       $bf->append($flag, $value, $source, $maint)
           Append the options listed in $value to the current value of the
           flag $flag.  Record its origin as $source (if defined). Record it
           as maintainer modified if $maint is defined and true.

       $bf->prepend($flag, $value, $source, $maint)
           Prepend the options listed in $value to the current value of the
           flag $flag.  Record its origin as $source (if defined). Record it
           as maintainer modified if $maint is defined and true.

       $bf->update_from_conffile($file, $source)
           Update the current build flags based on the configuration
           directives contained in $file. See dpkg-buildflags(1) for the
           format of the directives.

           $source is the origin recorded for any build flag set or modified.

       $bf->get($flag)
           Return the value associated to the flag. It might be undef if the
           flag doesn't exist.

       $bf->get_feature_areas()
           Return the feature areas (i.e. the area values has_features will
           return true for).

       $bf->get_features($area)
           Return, for the given area, a hash with keys as feature names, and
           values as booleans indicating whether the feature is enabled or
           not.

       $bf->get_origin($flag)
           Return the origin associated to the flag. It might be undef if the
           flag doesn't exist.

       $bf->is_maintainer_modified($flag)
           Return true if the flag is modified by the maintainer.

       $bf->has_features($area)
           Returns true if the given area of features is known, and false
           otherwise.  The only currently recognized feature areas are "qa",
           "sanitize", "hardening" and "reproducible".

       $bf->has($option)
           Returns a boolean indicating whether the flags exists in the
           object.

       @flags = $bf->list()
           Returns the list of flags stored in the object.

CHANGES
   Version 1.03 (dpkg 1.16.5)
       New method: $bf->get_feature_areas() to list possible values for
       $bf->get_features.

       New method $bf->is_maintainer_modified() and new optional parameter to
       $bf->set(), $bf->append(), $bf->prepend(), $bf->strip().

   Version 1.02 (dpkg 1.16.2)
       New methods: $bf->get_features(), $bf->has_features(),
       $bf->set_feature().

   Version 1.01 (dpkg 1.16.1)
       New method: $bf->prepend() very similar to append(). Implement support
       of the prepend operation everywhere.

       New method: $bf->load_maintainer_config() that update the build flags
       based on the package maintainer directives.

   Version 1.00 (dpkg 1.15.7)
       Mark the module as public.

AUTHOR
       Raphael Hertzog <hertzog@debian.org>

1.18.4                            2015-12-12               Dpkg::BuildFlags(3)