make is exiting with several "undefined reference to 'ldap_int_tls_impl'" error messages: ./.libs/libldap.a(tls2.o): In function `ldap_pvt_tls_ctx_free': /home/vmplanet/Downloads/openldap-2.4.24/libraries/libldap/tls2.c:79: undefined reference to `ldap_int_tls_impl' ./.libs/libldap.a(tls2.o): In function `tls_init': /home/vmplanet/Downloads/openldap-2.4.24/libraries/libldap/tls2.c:163: undefined reference to `ldap_int_tls_impl' /home/vmplanet/Downloads/openldap-2.4.24/libraries/libldap/tls2.c:163: undefined reference to `ldap_int_tls_impl' /home/vmplanet/Downloads/openldap-2.4.24/libraries/libldap/tls2.c:168: undefined reference to `ldap_int_tls_impl' ./.libs/libldap.a(tls2.o): In function `ldap_pvt_tls_check_hostname': /home/vmplanet/Downloads/openldap-2.4.24/libraries/libldap/tls2.c:494: undefined reference to `ldap_int_tls_impl' ./.libs/libldap.a(tls2.o):/home/vmplanet/Downloads/openldap-2.4.24/libraries/libldap/tls2.c:860: more undefined references to `ldap_int_tls_impl' follow collect2: ld returned 1 exit status make[2]: *** [apitest] Error 1 make[2]: Leaving directory `/home/vmplanet/Downloads/openldap-2.4.24/libraries/libldap' make[1]: *** [all-common] Error 1 make[1]: Leaving directory `/home/vmplanet/Downloads/openldap-2.4.24/libraries' make: *** [all-common] Error 1 what is the proper way to fix this so that i might successfully make? BACKGROUND i am attempting to set up and install openldap 2.4.24 on a virtual kubuntu on windows xp. 'configure' and 'make depend' appear to run successfully. i execute the following steps: export CPPFLAGS="-I/usr/include/nss -I/usr/include/nspr -I/usr/local/BerkeleyDB.5.0/include" export LDFLAGS="-L/usr/lib/nss -L/usr/local/BerkeleyDB.5.0/lib" export LD_LIBRARY_PATH="/home/vmplanet/Downloads/db-5.0.32/build_unix/.libs" configure --enable-shell=yes --without-threads make depend (in case you're wondering why back-shell, i've included details in a previous thread, http://tinyurl.com/4flbgh4. note that in that thread, i successfully installed openldap directly on windows, but had questions about successfully testing back-shell -- and still do.) going back to the errors above, i note in which files this 'ldap_int_tls_impl' appears with a grep: ./libraries/libldap_r/tls2.c:40:static tls_impl *tls_imp = &ldap_int_tls_impl; ./libraries/libldap_r/tls_g.c:1095:tls_impl ldap_int_tls_impl = { ./libraries/libldap_r/tls_o.c:1253:tls_impl ldap_int_tls_impl = { ./libraries/libldap_r/tls_m.c:3040:tls_impl ldap_int_tls_impl = { ./libraries/libldap/tls2.c:40:static tls_impl *tls_imp = &ldap_int_tls_impl; ./libraries/libldap/tls_g.c:1095:tls_impl ldap_int_tls_impl = { ./libraries/libldap/ldap-tls.h:75:extern tls_impl ldap_int_tls_impl; Binary file ./libraries/libldap/.libs/libldap-2.4.so.2.6.0 matches Binary file ./libraries/libldap/.libs/libldap.so matches Binary file ./libraries/libldap/.libs/tls2.o matches Binary file ./libraries/libldap/.libs/libldap-2.4.so.2 matches Binary file ./libraries/libldap/.libs/libldap.a matches Binary file ./libraries/libldap/tls2.o matches ./libraries/libldap/tls_o.c:1253:tls_impl ldap_int_tls_impl = { ./libraries/libldap/tls_m.c:3040:tls_impl ldap_int_tls_impl = { ldap_int_tls_impl appears (defined) in the fellow tls* files above. is this then an indication that tls2.c is not communicating or 'linked' to its fellow tls* files or ? the output from 'make depend' appears to show that mkdep traversed the libldap and libldap_r subdirectories and successfully constructed the necessary sets of include file dependencies. admittedly, i am not altogether that familiar with (the intricacies of) the compile/make process. please advise; thanks in advance.