- if test "$ac_cv_search_inet_pton" != "no" &&
- test "$ac_cv_search_inet_pton" != "none required"; then
- INET_PTON_LIB="$ac_cv_search_inet_pton"
+ gl_PREREQ_SYS_H_WINSOCK2
+ if test $HAVE_WINSOCK2_H = 1; then
+ AC_CHECK_DECLS([inet_pton],,, [[#include <ws2tcpip.h>]])
+ if test $ac_cv_have_decl_inet_pton = yes; then
+ dnl It needs to be overridden, because the stdcall calling convention
+ dnl is not compliant with POSIX.
+ REPLACE_INET_PTON=1
+ INET_PTON_LIB="-lws2_32"
+ else
+ HAVE_DECL_INET_PTON=0
+ HAVE_INET_PTON=0
+ fi
+ else
+ gl_save_LIBS=$LIBS
+ AC_SEARCH_LIBS([inet_pton], [nsl resolv], [],
+ [AC_CHECK_FUNCS([inet_pton])
+ if test $ac_cv_func_inet_pton = no; then
+ HAVE_INET_PTON=0
+ fi
+ ])
+ LIBS=$gl_save_LIBS
+
+ if test "$ac_cv_search_inet_pton" != "no" \
+ && test "$ac_cv_search_inet_pton" != "none required"; then
+ INET_PTON_LIB="$ac_cv_search_inet_pton"
+ fi
+
+ AC_CHECK_HEADERS_ONCE([netdb.h])
+ AC_CHECK_DECLS([inet_pton],,,
+ [[#include <arpa/inet.h>
+ #if HAVE_NETDB_H
+ # include <netdb.h>
+ #endif
+ ]])
+ if test $ac_cv_have_decl_inet_pton = no; then
+ HAVE_DECL_INET_PTON=0
+ fi