[PATCH] D16130: Don't try to build Burg if yacc isn't installed.

[Justin Lebar via llvm-commits]

jlebar added a comment.

Please have another look.  I didn't touch gawk since it's currently not being built (and frankly, my interest is in making the test-suite build -- I'd prefer to leave the wholesale cleanup to someone else).


http://reviews.llvm.org/D16130