llvm-svn: 287254
Previously we did not support them, patch implements this functionality Differential revision: https://reviews.llvm.org/D26604 llvm-svn: 287124
llvm-svn: 280860
Option checks for cases where a version script explicitly lists a symbol, but the symbol is not defined and errors out such cases if any. Differential revision: http://reviews.llvm.org/D21745 llvm-svn: 273998