Files: tests/test-net_if.c tests/signature.h Depends-on: configure.ac: NET_IF_LIB= gl_saved_libs="$LIBS" AC_SEARCH_LIBS([if_nameindex], [socket], [AC_DEFINE([HAVE_IF_NAMEINDEX], [1], [Define if you have if_nameindex.]) if test "$ac_cv_search_if_nameindex" != "none required"; then NET_IF_LIB="$ac_cv_search_if_nameindex" fi]) LIBS="$gl_saved_libs" AC_SUBST([NET_IF_LIB]) Makefile.am: TESTS += test-net_if check_PROGRAMS += test-net_if test_net_if_LDADD = $(LDADD) @NET_IF_LIB@