diff options
Diffstat (limited to 'm4/getaddrinfo.m4')
| -rw-r--r-- | m4/getaddrinfo.m4 | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/m4/getaddrinfo.m4 b/m4/getaddrinfo.m4 new file mode 100644 index 0000000..53e6c34 --- /dev/null +++ b/m4/getaddrinfo.m4 @@ -0,0 +1,209 @@ +# getaddrinfo.m4 serial 31 +dnl Copyright (C) 2004-2018 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_CHECKING([how to do getaddrinfo, freeaddrinfo and getnameinfo]) + GETADDRINFO_LIB= + gai_saved_LIBS="$LIBS" + + dnl Where is getaddrinfo()? + dnl - On Solaris, it is in libsocket. + dnl - On Haiku, it is in libnetwork. + dnl - On BeOS, it is in libnet. + dnl - On native Windows, it is in ws2_32.dll. + dnl - Otherwise it is in libc. + AC_SEARCH_LIBS([getaddrinfo], [socket network net], + [if test "$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="$LIBS -lws2_32" + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#ifdef HAVE_WS2TCPIP_H +#include <ws2tcpip.h> +#endif +#include <stddef.h> +]], [[getaddrinfo(NULL, NULL, NULL, NULL);]])], [gl_cv_w32_getaddrinfo=yes]) + LIBS="$am_save_LIBS" + ]) + if test "$gl_cv_w32_getaddrinfo" = "yes"; then + GETADDRINFO_LIB="-lws2_32" + LIBS="$gai_saved_LIBS $GETADDRINFO_LIB" + else + 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" + + gl_PREREQ_GETADDRINFO + + AC_SUBST([GETADDRINFO_LIB]) +]) + +# 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_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_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. */ +#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 +]]) + 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 <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#ifdef HAVE_WS2TCPIP_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 +]) |