Bug 29062

When linking a program with both krb4 and krb5 libraries, and making a
static executable, the link fails with a multiply defined symbol.
The following krb5 and krb4 lines, in concert, provoked the failure.

LDADD+= -lgssapi -lkrb5 -lasn1 -lcrypto -lroken -lcom_err

LDADD+=	-lkrb -lcrypto -lcom_err

Each library defines symbols referring to version strings, and
includes then in a module that is almost certain to be included.

Fix: Both kerberosIV and kerberos5 define krb4 and heimdal version strings.
The following patch causes each library to define its own version, and
avoids trying to reference the krb4 version string in the krb5
library.
How-To-Repeat: 
Apply the following patch to src/gnu/usr.bin/cvs/cvs/Makefile and build

Index: gnu/usr.bin/cvs/cvs/Makefile
===================================================================
RCS file: /FREEBSD-CVS/src/gnu/usr.bin/cvs/cvs/Makefile,v
retrieving revision 1.32.2.1
diff -u -r1.32.2.1 Makefile
--- gnu/usr.bin/cvs/cvs/Makefile	2001/04/25 12:03:33	1.32.2.1
+++ gnu/usr.bin/cvs/cvs/Makefile	2001/07/18 16:15:37
@@ -28,6 +28,21 @@
 DPADD+=	${LIBCVS} ${LIBDIFF} ${LIBGNUREGEX} ${LIBMD} ${LIBCRYPT} ${LIBZ}
 LDADD+=	${LIBCVS} ${LIBDIFF} -lgnuregex -lmd -lcrypt -lz
 
+# KLUDGE!  gssapi/krb5 is first because the resolv.o in libroken
+# appears to be a superset of the resolv.o in libkrb, and this
+# order avoids the libkrb version being added, and thus avoids
+# multiply defined symbol errors for the symbols that are defined.
+.if exists(${DESTDIR}${LIBDIR}/libgssapi.a) && defined(MAKE_KERBEROS5)
+CFLAGS+=-DHAVE_GSSAPI -DHAVE_GSSAPI_H -DHAVE_GSS_C_NT_HOSTBASED_SERVICE
+# The LDADD line below is for the heimdal implementation of gssapi/krb5
+LDADD+= -lgssapi -lkrb5 -lasn1 -lcrypto -lroken -lcom_err
+# XXX DPADD should have gssapi, krb5, adn1, roken but not in libnames.mk
+DPADD+= ${LIBCRYPTO} ${LIBCOM_ERR}
+DISTRIBUTION=	krb5
+# definitely want encryption
+CFLAGS+= -DENCRYPTION
+.endif
+
 .if exists(${DESTDIR}${LIBDIR}/libkrb.a) && defined(MAKE_KERBEROS4)
 CFLAGS+=-DHAVE_KERBEROS -DHAVE_KRB_GET_ERR_TEXT
 LDADD+=	-lkrb -lcrypto -lcom_err