From a41ba453ad651dd40bb1dfdb3e42ca4e04d0a5e7 Mon Sep 17 00:00:00 2001
From: Assar Westerlund <assar@sics.se>
Date: Sat, 1 Jan 2000 11:44:45 +0000
Subject: [PATCH] re-organize: test for type of stack first so that we can find
 the libraries that we might have to link the test program against.  not
 linking the test program means we don't know if the right stuff is in the
 libraries. also cosmetic changes to make sure we print the checking for...
 nicely

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@7694 ec53bebd-3082-4978-b11e-865c3cabbd6b
---
 cf/krb-ipv6.m4 | 170 ++++++++++++++++++++++++-------------------------
 1 file changed, 82 insertions(+), 88 deletions(-)

diff --git a/cf/krb-ipv6.m4 b/cf/krb-ipv6.m4
index a148ffc00..6d4ed79ef 100644
--- a/cf/krb-ipv6.m4
+++ b/cf/krb-ipv6.m4
@@ -8,7 +8,85 @@ AC_ARG_WITH(ipv6,
 if test "$withval" = "no"; then
 	ac_cv_lib_ipv6=no
 fi])
-AC_CACHE_CHECK(for IPv6,ac_cv_lib_ipv6,
+AC_CACHE_VAL(ac_cv_lib_ipv6,
+[dnl check for different v6 implementations (by itojun)
+v6type=unknown
+v6lib=none
+
+AC_MSG_CHECKING([ipv6 stack type])
+for i in v6d toshiba kame inria zeta linux; do
+	case $i in
+	v6d)
+		AC_EGREP_CPP(yes, [dnl
+#include </usr/local/v6/include/sys/types.h>
+#ifdef __V6D__
+yes
+#endif],
+			[v6type=$i; v6lib=v6;
+			v6libdir=/usr/local/v6/lib;
+			CFLAGS="-I/usr/local/v6/include $CFLAGS"])
+		;;
+	toshiba)
+		AC_EGREP_CPP(yes, [dnl
+#include <sys/param.h>
+#ifdef _TOSHIBA_INET6
+yes
+#endif],
+			[v6type=$i; v6lib=inet6;
+			v6libdir=/usr/local/v6/lib;
+			CFLAGS="-DINET6 $CFLAGS"])
+		;;
+	kame)
+		AC_EGREP_CPP(yes, [dnl
+#include <netinet/in.h>
+#ifdef __KAME__
+yes
+#endif],
+			[v6type=$i; v6lib=inet6;
+			v6libdir=/usr/local/v6/lib;
+			CFLAGS="-DINET6 $CFLAGS"])
+		;;
+	inria)
+		AC_EGREP_CPP(yes, [dnl
+#include <netinet/in.h>
+#ifdef IPV6_INRIA_VERSION
+yes
+#endif],
+			[v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
+		;;
+	zeta)
+		AC_EGREP_CPP(yes, [dnl
+#include <sys/param.h>
+#ifdef _ZETA_MINAMI_INET6
+yes
+#endif],
+			[v6type=$i; v6lib=inet6;
+			v6libdir=/usr/local/v6/lib;
+			CFLAGS="-DINET6 $CFLAGS"])
+		;;
+	linux)
+		if test -d /usr/inet6; then
+			v6type=$i
+			v6lib=inet6
+			v6libdir=/usr/inet6
+			CFLAGS="-DINET6 $CFLAGS"
+		fi
+		;;
+	esac
+	if test "$v6type" != "unknown"; then
+		break
+	fi
+done
+AC_MSG_RESULT($v6type)
+
+if test "$v6lib" != "none"; then
+	for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
+		if test -d $dir -a -f $dir/lib$v6lib.a; then
+			LIBS="-L$dir -l$v6lib $LIBS"
+			break
+		fi
+	done
+fi
 AC_TRY_LINK([
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -35,94 +113,10 @@ AC_TRY_LINK([
  bind(s, (struct sockaddr *)&sin6, sizeof(sin6));
 ],
 ac_cv_lib_ipv6=yes,
-ac_cv_lib_ipv6=no))
+ac_cv_lib_ipv6=no)])
+AC_MSG_CHECKING(for IPv6)
+AC_MSG_RESULT($ac_cv_lib_ipv6)
 if test "$ac_cv_lib_ipv6" = yes; then
   AC_DEFINE(HAVE_IPV6, 1, [Define if you have IPv6.])
-
-	dnl check for different v6 implementations (by itojun)
-	v6type=unknown
-	v6lib=none
-
-	AC_MSG_CHECKING([ipv6 stack type])
-	for i in v6d toshiba kame inria zeta linux; do
-		case $i in
-		v6d)
-			AC_EGREP_CPP(yes, [dnl
-#include </usr/local/v6/include/sys/types.h>
-#ifdef __V6D__
-yes
-#endif],
-				[v6type=$i; v6lib=v6;
-				v6libdir=/usr/local/v6/lib;
-				CFLAGS="-I/usr/local/v6/include $CFLAGS"])
-			;;
-		toshiba)
-			AC_EGREP_CPP(yes, [dnl
-#include <sys/param.h>
-#ifdef _TOSHIBA_INET6
-yes
-#endif],
-				[v6type=$i; v6lib=inet6;
-				v6libdir=/usr/local/v6/lib;
-				CFLAGS="-DINET6 $CFLAGS"])
-			;;
-		kame)
-			AC_EGREP_CPP(yes, [dnl
-#include <netinet/in.h>
-#ifdef __KAME__
-yes
-#endif],
-				[v6type=$i; v6lib=inet6;
-				v6libdir=/usr/local/v6/lib;
-				CFLAGS="-DINET6 $CFLAGS"])
-			;;
-		inria)
-			AC_EGREP_CPP(yes, [dnl
-#include <netinet/in.h>
-#ifdef IPV6_INRIA_VERSION
-yes
-#endif],
-				[v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
-			;;
-		zeta)
-			AC_EGREP_CPP(yes, [dnl
-#include <sys/param.h>
-#ifdef _ZETA_MINAMI_INET6
-yes
-#endif],
-				[v6type=$i; v6lib=inet6;
-				v6libdir=/usr/local/v6/lib;
-				CFLAGS="-DINET6 $CFLAGS"])
-			;;
-		linux)
-			if test -d /usr/inet6; then
-				v6type=$i
-				v6lib=inet6
-				v6libdir=/usr/inet6
-				CFLAGS="-DINET6 $CFLAGS"
-			fi
-			;;
-		esac
-		if test "$v6type" != "unknown"; then
-			break
-		fi
-	done
-	AC_MSG_RESULT($v6type)
-
-	if test "$v6lib" != "none"; then
-		for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
-			if test -d $dir -a -f $dir/lib$v6lib.a; then
-				LIBS="-L$dir -l$v6lib $LIBS"
-				break
-			fi
-		done
-dnl		AC_CHECK_LIB($v6lib, getaddrinfo,
-dnl			[SERVER_LIBS="-l$v6lib $SERVER_LIBS"],
-dnl			[dnl
-dnl			echo "Fatal: no $v6lib library found.  cannot continue."
-dnl			echo "You need to fetch lib$v6lib.a from appropriate v6 kit and"
-dnl			echo 'compile beforehand.'
-dnl			exit 1])
-	fi
 fi
 ])