28 lines
955 B
Plaintext
28 lines
955 B
Plaintext
dnl Check for various features required for IPv6 support. Define a
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dnl preprocessor symbol for each individual feature (HAVE_GETADDRINFO,
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dnl HAVE_FREEADDRINFO, HAVE_STRUCT_ADDRINFO, HAVE_SOCKADDR_STORAGE,
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dnl HAVE_SOCKADDR_IN6, HAVE_IN6_ADDR). Also set the shell variable nut_have_ipv6=yes
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dnl if all the required features are present. Set nut_have_ipv6=no otherwise.
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AC_DEFUN([NUT_CHECK_IPV6],
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[
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if test -z "${nut_check_ipv6_seen}"; then
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nut_check_ipv6_seen=yes
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AC_CHECK_FUNCS([getaddrinfo freeaddrinfo], [nut_have_ipv6=yes], [nut_have_ipv6=no])
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AC_CHECK_TYPES([struct addrinfo],
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[], [nut_have_ipv6=no], [#include <netdb.h>])
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AC_CHECK_TYPES([struct sockaddr_storage],
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[], [nut_have_ipv6=no], [#include <sys/socket.h>])
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AC_CHECK_TYPES([struct sockaddr_in6, struct in6_addr],
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[], [nut_have_ipv6=no], [#include <netinet/in.h>])
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if test "${nut_have_ipv6}" = "yes"; then
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AC_DEFINE(HAVE_IPV6, 1, [Define to enable IPv6 support])
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fi
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fi
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])
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