Since 2 days it happens and ends up in:

cc -O2  -Werror   -I.                                    -I/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin                -I/usr/src/crypto-intl/libexec/kadmind/../../include            -I/usr/include/kadm5            -I/usr/include/krb5             -I/usr/include/openssl  -DHAVE_CONFIG_H -c /usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/server.c
cc -O2  -Werror   -I.                                    -I/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin                -I/usr/src/crypto-intl/libexec/kadmind/../../include            -I/usr/include/kadm5            -I/usr/include/krb5             -I/usr/include/openssl  -DHAVE_CONFIG_H -c /usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c: In function `error_code':
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:381: `KADM_UNAUTH' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:381: (Each undeclared identifier is reported only once
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:381: for each function it appears in.)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:383: `KADM_UK_RERROR' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:385: `KADM_INUSE' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:388: `KADM_NO_SERV' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:390: `KADM_NO_CONN' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:392: `KADM_NOENTRY' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:397: `KADM_INSECURE_PW' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:416: `KADM_IMMUTABLE' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c: In function `decode_packet':
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:809: `KADM_BAD_VER' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:828: `KADM_NOMEM' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:841: `KADM_NO_AUTH' undeclared (first use in this function)
/usr/src/crypto-intl/libexec/kadmind/../../dist/heimdal/kadmin/version4.c:885: `KADM_BAD_CHK' undeclared (first use in this function)
*** Error code 1

Stop.
*** Error code 1

Stop.
*** Error code 1

Stop.
*** Error code 1

Stop.
*** Error code 1

Stop.