diff options
Diffstat (limited to 'm4/getaddrinfo.m4')
| -rw-r--r-- | m4/getaddrinfo.m4 | 195 |
1 files changed, 158 insertions, 37 deletions
diff --git a/m4/getaddrinfo.m4 b/m4/getaddrinfo.m4 index db285d9..2af1e01 100644 --- a/m4/getaddrinfo.m4 +++ b/m4/getaddrinfo.m4 @@ -1,64 +1,151 @@ -# getaddrinfo.m4 serial 11 -dnl Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc. +# getaddrinfo.m4 serial 30 +dnl Copyright (C) 2004-2016 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="$LIBS" - AC_SEARCH_LIBS(getaddrinfo, [nsl socket]) - AC_CHECK_FUNCS(getaddrinfo,, [ - AC_CACHE_CHECK(for getaddrinfo in ws2tcpip.h and -lws2_32, - gl_cv_w32_getaddrinfo, [ + dnl Where is getaddrinfo()? + dnl - On Solaris, it is in libsocket. + dnl - On Haiku, it is in libnetwork. + dnl - On BeOS, it is in libnet. + dnl - On native Windows, it is in ws2_32.dll. + dnl - Otherwise it is in libc. + AC_SEARCH_LIBS([getaddrinfo], [socket network net], + [if test "$ac_cv_search_getaddrinfo" != "none required"; then + GETADDRINFO_LIB="$ac_cv_search_getaddrinfo" + fi]) + LIBS="$gai_saved_LIBS $GETADDRINFO_LIB" + + HAVE_GETADDRINFO=1 + AC_CACHE_CHECK([for getaddrinfo], [gl_cv_func_getaddrinfo], [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#include <stddef.h> +]], [[getaddrinfo("", "", NULL, NULL);]])], + [gl_cv_func_getaddrinfo=yes], + [gl_cv_func_getaddrinfo=no])]) + if test $gl_cv_func_getaddrinfo = no; then + AC_CACHE_CHECK([for getaddrinfo in ws2tcpip.h and -lws2_32], + gl_cv_w32_getaddrinfo, [ gl_cv_w32_getaddrinfo=no am_save_LIBS="$LIBS" LIBS="$LIBS -lws2_32" - AC_TRY_LINK([ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_WS2TCPIP_H #include <ws2tcpip.h> #endif -], [getaddrinfo(0, 0, 0, 0);], gl_cv_w32_getaddrinfo=yes) - LIBS="$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_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> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#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" - AC_REPLACE_FUNCS(gai_strerror) 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_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([gl_NETDB_H_DEFAULTS]) + AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H + 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_GNU_SOURCE]) - AC_CHECK_HEADERS_ONCE(netinet/in.h netdb.h) - AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, gai_strerror, getnameinfo],,,[ + AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + + 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. */ @@ -72,7 +159,20 @@ AC_DEFUN([gl_PREREQ_GETADDRINFO], [ #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 @@ -85,4 +185,25 @@ AC_DEFUN([gl_PREREQ_GETADDRINFO], [ #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 ]) |