[llvm-go] parameterize $GOPATH construction
Summary:
To build llgo, you must currently ensure that llgo
is in the tools/llgo directory, due to a hard-coded
path in llvm-go.
To support the use of LLVM_EXTERNAL_LLGO_SOURCE_DIR,
we introduce a flag to llvm-go that enables the
caller to specify the paths to symlink in the
temporary $GOPATH.
Reviewers: pcc
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D21634
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276829
91177308-0d34-0410-b5e6-
96231b3b80d8