Put in some comments about stuff I noticed when trying to get tcpdump to

[tcpdump] / configure.in

diff --git a/configure.in b/configure.in
index 7aed90c41ebb89ecdf68c35384e3d1427a3bfd1b..019b4d777700c55b029c0342fc8774e490178952 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1,4 +1,4 @@
-dnl @(#) $Header: /tcpdump/master/tcpdump/configure.in,v 1.153 2002-08-02 04:01:33 guy Exp $ (LBL)
+dnl @(#) $Header: /tcpdump/master/tcpdump/configure.in,v 1.154 2002-08-03 20:28:05 guy Exp $ (LBL)
 dnl
 dnl Copyright (c) 1994, 1995, 1996, 1997
 dnl    The Regents of the University of California.  All rights reserved.
@@ -6,7 +6,7 @@ dnl
 dnl Process this file with autoconf to produce a configure script.
 dnl
 
-AC_REVISION($Revision: 1.153 $)
+AC_REVISION($Revision: 1.154 $)
 AC_PREREQ(2.13)
 AC_INIT(tcpdump.c)
 
@@ -182,6 +182,10 @@ yes
                        ;;
                linux-libinet6)
                        dnl http://www.v6.linux.or.jp/
+                       dnl
+                       dnl This also matches Solaris 8 and Tru64 UNIX 5.1,
+                       dnl and possibly other versions of those OSes
+                       dnl
                        if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
                                ipv6type=$i
                                ipv6lib=inet6
@@ -249,6 +253,19 @@ fi
 
 
 if test "$ipv6" = "yes"; then
+       #
+       # XXX - on Tru64 UNIX 5.1, there is no "getaddrinfo()"
+       # function in libc; there are "ngetaddrinfo()" and
+       # "ogetaddrinfo()" functions, and <netdb.h> #defines
+       # "getaddrinfo" to be either "ngetaddrinfo" or
+       # "ogetaddrinfo", depending on whether _SOCKADDR_LEN
+       # or _XOPEN_SOURCE_EXTENDED are defined or not.
+       #
+       # So this test doesn't work on Tru64 5.1, and possibly
+       # on other 5.x releases.  This causes the configure
+       # script to become confused, and results in libpcap
+       # being unbuildable.
+       #
        AC_SEARCH_LIBS(getaddrinfo, socket, [dnl
        AC_MSG_CHECKING(getaddrinfo bug)
        AC_CACHE_VAL(td_cv_buggygetaddrinfo, [AC_TRY_RUN([
@@ -355,6 +372,13 @@ main()
        fi
 
        if test "$td_cv_buggygetaddrinfo" = "yes"; then
+               #
+               # XXX - it doesn't appear that "ipv6type" can ever be
+               # set to "linux".  Should this be testing for
+               # "linux-glibc", or for that *or* "linux-libinet6"?
+               # If the latter, note that "linux-libinet6" is also
+               # the type given to some non-Linux OSes.
+               #
                if test "$ipv6type" != "linux"; then
                        echo 'Fatal: You must get working getaddrinfo() function.'
                        echo '       or you can specify "--disable-ipv6"'.