SAGE_SPKG_CONFIGURE([cliquer], [
AC_SEARCH_LIBS([clique_unweighted_max_weight], [cliquer], [
AC_LANG_PUSH([C])
AC_CHECK_HEADER([cliquer/cliquer.h], [
AC_PATH_PROG([CL], [cl])
AS_IF([test x$CL = x], [
AC_MSG_NOTICE([cl (cliquer's CLI) is not found.])
AC_MSG_NOTICE([No action, as Sage does not need it. cl might be named cliquer on this system.])
])
], [sage_spkg_install_cliquer=yes])
AC_LANG_POP()
], [sage_spkg_install_cliquer=yes])
])