Possible arguments: (none), build

Runs autoreconf. It encapsulates the aclocal, autoconf, autoheader, automake, autopoint, and libtoolize commands. Each command applies to ${CONFIGURE_WRKSRC}/configure.ac or its old name, ${CONFIGURE_WRKSRC}/configure.in. If configure.ac defines subdirectories with their own configure.ac using AC_CONFIG_SUBDIRS, autoreconf will recursively update those as well. The :build argument only adds build time dependencies on those tools but does not run autoreconf.