as_fn_set_status $ac_retval
} # ac_fn_c_try_link
+
+# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES
+# ---------------------------------------------
+# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
+# accordingly.
+ac_fn_c_check_decl ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ as_decl_name=`echo $2|sed 's/ *(.*//'`
+ as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
+$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
+if eval \${$3+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+int
+main ()
+{
+#ifndef $as_decl_name
+#ifdef __cplusplus
+ (void) $as_decl_use;
+#else
+ (void) $as_decl_name;
+#endif
+#endif
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ eval "$3=yes"
+else
+ eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_decl
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+ For example, HP-UX 11i <limits.h> declares gettimeofday. */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $2 (); below.
+ Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ <limits.h> exists even on freestanding compilers. */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ eval "$3=yes"
+else
+ eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
done
-for ac_header in linux/if.h
+for ac_header in linux/if_tun.h
do :
- ac_fn_c_check_header_compile "$LINENO" "linux/if.h" "ac_cv_header_linux_if_h" "#if HAVE_SYS_SOCKET_H
+ ac_fn_c_check_header_compile "$LINENO" "linux/if_tun.h" "ac_cv_header_linux_if_tun_h" "#if HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
"
-if test "x$ac_cv_header_linux_if_h" = xyes; then :
+if test "x$ac_cv_header_linux_if_tun_h" = xyes; then :
cat >>confdefs.h <<_ACEOF
-#define HAVE_LINUX_IF_H 1
+#define HAVE_LINUX_IF_TUN_H 1
_ACEOF
fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: Checking requirements for IPv6 support..." >&5
+$as_echo "$as_me: Checking requirements for IPv6 support..." >&6;}
+enable_ipv6=true
+
+ac_fn_c_check_decl "$LINENO" "AF_INET6" "ac_cv_have_decl_AF_INET6" "#include <netinet/in.h>
+"
+if test "x$ac_cv_have_decl_AF_INET6" = xyes; then :
+
+else
+ enable_ipv6=false
+fi
+
+ac_fn_c_check_func "$LINENO" "adns_addr2text" "ac_cv_func_adns_addr2text"
+if test "x$ac_cv_func_adns_addr2text" = xyes; then :
+
+else
+ enable_ipv6=false
+fi
+
+if $enable_ipv6; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: Enabling IPv6 support" >&5
+$as_echo "$as_me: Enabling IPv6 support" >&6;}
+
+$as_echo "#define CONFIG_IPV6 1" >>confdefs.h
+
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Disabling IPv6 support" >&5
+$as_echo "$as_me: WARNING: Disabling IPv6 support" >&2;}
+fi
+
ac_config_files="$ac_config_files Makefile"
ac_config_commands="$ac_config_commands default"
~ianmdlvl / secnet.git / blobdiff