-# getaddrinfo.m4 serial 15
-dnl Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+# getaddrinfo.m4 serial 30
+dnl Copyright (C) 2004-2013 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_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
+ AC_REQUIRE([gl_HEADER_NETDB])dnl for HAVE_NETDB_H
AC_MSG_NOTICE([checking how to do getaddrinfo, freeaddrinfo and getnameinfo])
+ GETADDRINFO_LIB=
+ gai_saved_LIBS="$LIBS"
- AC_CHECK_HEADERS_ONCE(netdb.h)
+ dnl Where is getaddrinfo()?
+ dnl - On Solaris, it is in libsocket.
+ dnl - On Haiku, it is in libnetwork.
+ dnl - On BeOS, it is in libnet.
+ dnl - On native Windows, it is in ws2_32.dll.
+ dnl - Otherwise it is in libc.
+ AC_SEARCH_LIBS([getaddrinfo], [socket network net],
+ [if test "$ac_cv_search_getaddrinfo" != "none required"; then
+ GETADDRINFO_LIB="$ac_cv_search_getaddrinfo"
+ fi])
+ LIBS="$gai_saved_LIBS $GETADDRINFO_LIB"
- AC_SEARCH_LIBS(getaddrinfo, [nsl socket])
+ HAVE_GETADDRINFO=1
AC_CACHE_CHECK([for getaddrinfo], [gl_cv_func_getaddrinfo], [
- AC_TRY_LINK([
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
-#include <stdlib.h>
-], [getaddrinfo("", "", NULL, NULL);],
+#include <stddef.h>
+]], [[getaddrinfo("", "", NULL, NULL);]])],
[gl_cv_func_getaddrinfo=yes],
[gl_cv_func_getaddrinfo=no])])
if test $gl_cv_func_getaddrinfo = no; then
- AC_CACHE_CHECK(for getaddrinfo in ws2tcpip.h and -lws2_32,
- gl_cv_w32_getaddrinfo, [
+ AC_CACHE_CHECK([for getaddrinfo in ws2tcpip.h and -lws2_32],
+ gl_cv_w32_getaddrinfo, [
gl_cv_w32_getaddrinfo=no
am_save_LIBS="$LIBS"
LIBS="$LIBS -lws2_32"
- AC_TRY_LINK([
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
-#include <stdlib.h>
-], [getaddrinfo(NULL, NULL, NULL, NULL);], gl_cv_w32_getaddrinfo=yes)
- LIBS="$am_save_LIBS"])
+#include <stddef.h>
+]], [[getaddrinfo(NULL, NULL, NULL, NULL);]])], [gl_cv_w32_getaddrinfo=yes])
+ LIBS="$am_save_LIBS"
+ ])
if test "$gl_cv_w32_getaddrinfo" = "yes"; then
- LIBS="$LIBS -lws2_32"
+ GETADDRINFO_LIB="-lws2_32"
+ LIBS="$gai_saved_LIBS $GETADDRINFO_LIB"
else
- AC_LIBOBJ(getaddrinfo)
+ HAVE_GETADDRINFO=0
fi
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_CACHE_CHECK([for gai_strerror (possibly via ws2tcpip.h)],
- gl_cv_func_gai_strerror, [
- AC_TRY_LINK([
+ AC_CHECK_DECLS([gai_strerror], [], [], [[
+#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
+#include <stddef.h>
+]])
+ if test $ac_cv_have_decl_gai_strerror = yes; then
+ AC_CHECK_DECLS([gai_strerrorA], [], [], [[
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
-#include <stdlib.h>
-], [gai_strerror (NULL);],
- [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)
+#include <stddef.h>
+]])
+ dnl check for correct signature
+ AC_CACHE_CHECK([for gai_strerror with POSIX signature],
+ [gl_cv_func_gai_strerror_posix_signature], [
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#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
+#include <stddef.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *gai_strerror(int);]])],
+ [gl_cv_func_gai_strerror_posix_signature=yes],
+ [gl_cv_func_gai_strerror_posix_signature=no])])
+ if test $gl_cv_func_gai_strerror_posix_signature = no; then
+ REPLACE_GAI_STRERROR=1
+ fi
fi
+ LIBS="$gai_saved_LIBS"
+
gl_PREREQ_GETADDRINFO
+
+ AC_SUBST([GETADDRINFO_LIB])
])
-# Prerequisites of lib/getaddrinfo.h and lib/getaddrinfo.c.
+# Prerequisites of lib/netdb.in.h and lib/getaddrinfo.c.
AC_DEFUN([gl_PREREQ_GETADDRINFO], [
+ AC_REQUIRE([gl_NETDB_H_DEFAULTS])
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
-#include <stdlib.h>
-], [gethostbyname(NULL);], gl_cv_w32_gethostbyname=yes)
- LIBS="$am_save_LIBS"])
- if test "$gl_cv_w32_gethostbyname" = "yes"; then
- LIBS="$LIBS -lws2_32"
- fi
- ])
+ AC_REQUIRE([gl_HOSTENT]) dnl for HOSTENT_LIB
+ AC_REQUIRE([gl_SERVENT]) dnl for SERVENT_LIB
+ AC_REQUIRE([gl_FUNC_INET_NTOP]) dnl for INET_NTOP_LIB
AC_REQUIRE([AC_C_RESTRICT])
AC_REQUIRE([gl_SOCKET_FAMILIES])
AC_REQUIRE([gl_HEADER_SYS_SOCKET])
- AC_REQUIRE([AC_C_INLINE])
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
- AC_CHECK_HEADERS_ONCE(netinet/in.h netdb.h)
- AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, gai_strerror, getnameinfo],,,[
+
+ dnl Including sys/socket.h is wrong for Windows, but Windows does not
+ dnl have sa_len so the result is correct anyway.
+ AC_CHECK_MEMBERS([struct sockaddr.sa_len], , , [
+#include <sys/types.h>
+#include <sys/socket.h>
+])
+
+ AC_CHECK_HEADERS_ONCE([netinet/in.h])
+
+ AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, 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. */
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
-])
+]])
+ if test $ac_cv_have_decl_getaddrinfo = no; then
+ HAVE_DECL_GETADDRINFO=0
+ fi
+ if test $ac_cv_have_decl_freeaddrinfo = no; then
+ HAVE_DECL_FREEADDRINFO=0
+ fi
+ if test $ac_cv_have_decl_gai_strerror = no; then
+ HAVE_DECL_GAI_STRERROR=0
+ fi
+ if test $ac_cv_have_decl_getnameinfo = no; then
+ HAVE_DECL_GETNAMEINFO=0
+ fi
+
AC_CHECK_TYPES([struct addrinfo],,,[
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <ws2tcpip.h>
#endif
])
+ if test $ac_cv_type_struct_addrinfo = no; then
+ HAVE_STRUCT_ADDRINFO=0
+ fi
+
+ dnl Append $HOSTENT_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates.
+ case " $GETADDRINFO_LIB " in
+ *" $HOSTENT_LIB "*) ;;
+ *) GETADDRINFO_LIB="$GETADDRINFO_LIB $HOSTENT_LIB" ;;
+ esac
+
+ dnl Append $SERVENT_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates.
+ case " $GETADDRINFO_LIB " in
+ *" $SERVENT_LIB "*) ;;
+ *) GETADDRINFO_LIB="$GETADDRINFO_LIB $SERVENT_LIB" ;;
+ esac
+
+ dnl Append $INET_NTOP_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates.
+ case " $GETADDRINFO_LIB " in
+ *" $INET_NTOP_LIB "*) ;;
+ *) GETADDRINFO_LIB="$GETADDRINFO_LIB $INET_NTOP_LIB" ;;
+ esac
])
projects / gnulib.git / blobdiff