X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgetaddrinfo.m4;h=4a1e09f7758d64695309b3754fc6ee7775fdf694;hb=e9c57721db5e7cf2a19d93761d8c13e0c9701953;hp=8884464f88f153f059e87fafd3a4266033b38580;hpb=bb9921d7a63da2ad49dd840394b294efcdf857f1;p=gnulib.git

diff --git a/m4/getaddrinfo.m4 b/m4/getaddrinfo.m4
index 8884464f8..4a1e09f77 100644
--- a/m4/getaddrinfo.m4
+++ b/m4/getaddrinfo.m4
@@ -1,21 +1,113 @@
-# getaddrinfo.m4 serial 5
-dnl Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+# getaddrinfo.m4 serial 12
+dnl Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_GETADDRINFO],
 [
-  AC_SEARCH_LIBS(getaddrinfo, nsl socket)
-  AC_REPLACE_FUNCS(getaddrinfo gai_strerror)
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
+  AC_MSG_NOTICE([checking how to do getaddrinfo, freeaddrinfo and getnameinfo])
+
+  AC_SEARCH_LIBS(getaddrinfo, [nsl socket])
+  AC_CHECK_FUNCS(getaddrinfo,, [
+    AC_CACHE_CHECK(for getaddrinfo in ws2tcpip.h and -lws2_32,
+		   gl_cv_w32_getaddrinfo, [
+      gl_cv_w32_getaddrinfo=no
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS -lws2_32"
+      AC_TRY_LINK([
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+], [getaddrinfo(0, 0, 0, 0);], gl_cv_w32_getaddrinfo=yes)
+    LIBS="$am_save_LIBS"])
+    if test "$gl_cv_w32_getaddrinfo" = "yes"; then
+      LIBS="$LIBS -lws2_32"
+    else
+      AC_LIBOBJ(getaddrinfo)
+    fi
+    ])
+
+  # We can't use AC_REPLACE_FUNCS here because gai_strerror may be an
+  # inline function declared in ws2tcpip.h, so we need to get that
+  # header included somehow.
+  AC_CHECK_HEADERS_ONCE(netdb.h)
+  AC_CACHE_CHECK([for gai_strerror (possibly via ws2tcpip.h)],
+    gl_cv_func_gai_strerror, [
+      AC_TRY_LINK([
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+], [gai_strerror (0);],
+        [gl_cv_func_gai_strerror=yes],
+        [gl_cv_func_gai_strerror=no])])
+  if test $gl_cv_func_gai_strerror = no; then
+    AC_LIBOBJ(gai_strerror)
+  fi
+
   gl_PREREQ_GETADDRINFO
 ])
 
 # Prerequisites of lib/getaddrinfo.h and lib/getaddrinfo.c.
 AC_DEFUN([gl_PREREQ_GETADDRINFO], [
-  AC_REQUIRE([gl_SOCKLEN_T])
-  AC_REQUIRE([gl_C_RESTRICT])
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
+  AC_SEARCH_LIBS(gethostbyname, [inet nsl])
+  AC_SEARCH_LIBS(getservbyname, [inet nsl socket xnet])
+  AC_CHECK_FUNCS(gethostbyname,, [
+    AC_CACHE_CHECK(for gethostbyname in winsock2.h and -lws2_32,
+		   gl_cv_w32_gethostbyname, [
+      gl_cv_w32_gethostbyname=no
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS -lws2_32"
+      AC_TRY_LINK([
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+], [gethostbyname(0);], gl_cv_w32_gethostbyname=yes)
+    LIBS="$am_save_LIBS"])
+    if test "$gl_cv_w32_gethostbyname" = "yes"; then
+      LIBS="$LIBS -lws2_32"
+    fi
+    ])
+  AC_REQUIRE([AC_C_RESTRICT])
   AC_REQUIRE([gl_SOCKET_FAMILIES])
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
   AC_REQUIRE([AC_C_INLINE])
-  AC_CHECK_HEADERS_ONCE([netinet/in.h])
+  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_CHECK_HEADERS_ONCE(netinet/in.h netdb.h)
+  AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, gai_strerror, getnameinfo],,,[
+  /* sys/types.h is not needed according to POSIX, but the
+     sys/socket.h in i386-unknown-freebsd4.10 and
+     powerpc-apple-darwin5.5 required it. */
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+])
+  AC_CHECK_TYPES([struct addrinfo],,,[
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+])
 ])