Hi Simon, Good to see more include files covered!
> +#if @HAVE_NETDB_H@ > + > +/* Declarations for a platform that has <netdb.h>. */ > + > +#else > + > +/* Declarations for a platform that has <netdb.h>. */ The second 'has' should be a 'lacks', no? > + AC_CACHE_CHECK([whether <netdb.h> is self-contained], > + [gl_cv_header_netdb_h_selfcontained], > + [ > + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <netdb.h>]], > + [[struct hostent h;]])], Is it a problem on any platform that <netdb.h> is not self-contained? IIRC, I have looked for this problem a few months ago, and found no platform where <netdb.h> was not self-contained. If you find some such platforms, then netdb.in.h must include additional header files; if not, the configure check can be simplified. Also, you actually test whether the file defines 'struct hostent'. This is not needed: all systems that have a <netdb.h> define 'struct hostent' in it. Bruno
