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$NetBSD: patch-ai,v 1.13 2018/04/12 01:21:07 nonaka Exp $
Portable test syntax
--- configure.orig 2017-07-17 12:43:00.000000000 +0000
+++ configure
@@ -10133,7 +10133,49 @@ $as_echo "no" >&6; }
eval "ac_cv_type_${ac_safe_type}_has_ipi_addr="
fi
-if test "x$ac_cv_type_struct_in_pktinfo_has_ipi_addr" = "xyes"; then
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ipi_spec_dst in struct in_pktinfo" >&5
+$as_echo_n "checking for ipi_spec_dst in struct in_pktinfo... " >&6; }
+
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+#include <netinet/in.h>
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)
+#endif
+
+int
+main ()
+{
+ int foo = offsetof(struct in_pktinfo, ipi_spec_dst)
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ has_element=" "
+else
+ has_element=
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+ ac_safe_type=`echo "struct in_pktinfo" | sed 'y% %_%'`
+ if test "x$has_element" != "x"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ eval "ac_cv_type_${ac_safe_type}_has_ipi_spec_dst=yes"
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ eval "ac_cv_type_${ac_safe_type}_has_ipi_spec_dst="
+ fi
+
+if test "$ac_cv_type_struct_in_pktinfo_has_ipi_addr" = "yes" && test "$ac_cv_type_struct_in_pktinfo_has_ipi_spec_dst" = "yes"; then
$as_echo "#define HAVE_IP_PKTINFO /**/" >>confdefs.h
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