11.2.1 build errors

Building package for asterisk... Installing modules from pbx... Installing modules from channels... Installing modules from formats... Installing modules from cdr... Installing modules from codecs... Installing modules from apps... Installing modules from cel... Installing modules from bridges... Installing modules from tests... Installing modules from funcs... make[2]: warning: -jN forced in submake: disabling jobserver mode. Installing modules from addons... Installing modules from main... make[1]: Entering directory `/tmp/SBo/asterisk-11.2.1' make[3]: warning: -jN forced in submake: disabling jobserver mode. .pjlib-test-x86_64-unknown-linux-gnu.depend:639: *** missing separator. Stop. make[4]: *** [depend] Error 2 make[3]: *** [dep] Error 1 make[2]: *** [pjproject] Error 2 make[1]: *** [res] Error 2 make[1]: Leaving directory `/tmp/SBo/asterisk-11.2.1' make: *** [_cleantest_all] Error 2 make: *** Waiting for unfinished jobs.... make[2]: warning: -jN forced in submake: disabling jobserver mode. Installing modules from res...

This is from ‘make install’ on Slackware 14.0. Any ideas?