diff options
Diffstat (limited to 'erts/configure.in')
| -rw-r--r-- | erts/configure.in | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/erts/configure.in b/erts/configure.in index b3289bf84c..281f61f86e 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -1730,6 +1730,7 @@ case X$erl_xcomp_bigendian in esac AC_C_BIGENDIAN +AC_C_DOUBLE_MIDDLE_ENDIAN dnl fdatasync syscall (Unix only) AC_CHECK_FUNCS([fdatasync]) @@ -1943,6 +1944,64 @@ AC_CHECK_FUNCS([openpty]) AC_CHECK_HEADERS(net/if_dl.h ifaddrs.h netpacket/packet.h) AC_CHECK_FUNCS([getifaddrs]) +dnl Checks for variables in6addr_any and in6addr_loopback, +dnl +dnl They normally declared by netinet/in.h, according to POSIX, +dnl but not on Windows 7 (Windows SDK 7.1). I would have liked +dnl to just write AC_CHECK_DECL([in6addr_any], ...) but if doing so, +dnl the configure check fails erroneously on Linux with the error +dnl "cannot convert to a pointer type", on a line looking like +dnl "char *p = (char *) in6addr_any;", so work around that +dnl with some more code. +AC_CACHE_CHECK( + [whether in6addr_any is declared], + [erts_cv_have_in6addr_any], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[ + #include <sys/types.h> + #include <sys/socket.h> + #include <netinet/in.h> + ]], + [[printf("%d", in6addr_any.s6_addr[16]);]] + )], + [erts_cv_have_in6addr_any=yes], + [erts_cv_have_in6addr_any=no] + )] +) + +case "$erts_cv_have_in6addr_any" in + yes) + AC_DEFINE([HAVE_IN6ADDR_ANY], [1], + [Define to 1 if you have the variable in6addr_any declared.]) +esac + +AC_CACHE_CHECK( + [whether in6addr_loopback is declared], + [erts_cv_have_in6addr_loopback], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[ + #include <sys/types.h> + #include <sys/socket.h> + #include <netinet/in.h> + ]], + [[printf("%d", in6addr_loopback.s6_addr[16]);]] + )], + [erts_cv_have_in6addr_loopback=yes], + [erts_cv_have_in6addr_loopback=no] + )] +) + +case "$erts_cv_have_in6addr_loopback" in + yes) + AC_DEFINE([HAVE_IN6ADDR_LOOPBACK], [1], + [Define to 1 if you have the variable in6addr_loopback declared.]) +esac + +AC_CHECK_DECLS([IN6ADDR_ANY_INIT, IN6ADDR_LOOPBACK_INIT], [], [], + [#include <netinet/in.h>]) + dnl ---------------------------------------------------------------------- dnl Checks for features/quirks in the system that affects Erlang. dnl ---------------------------------------------------------------------- |