gollvm: report that gollvm doesn't support cross compilation
Since gollvm doesn't support cross compiling yet, this CL will aborts compilation
if the default triple is different with the triple specified by "--target" option,
and prints some prompt message.
Updates golang/go#42388
Change-Id: Iaf88456e85280b133261c42938d9295809f95a3a
Reviewed-on: https://go-review.googlesource.com/c/gollvm/+/270677
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Trust: eric fang <eric.fang@arm.com>
diff --git a/driver/Driver.cpp b/driver/Driver.cpp
index e8aa35a..8debbab 100644
--- a/driver/Driver.cpp
+++ b/driver/Driver.cpp
@@ -412,10 +412,15 @@
emitVersion();
// Set triple.
+ // TODO: add cross compiling support.
+ llvm::Triple defaultTargetTriple = Triple(sys::getDefaultTargetTriple());
+ triple_ = defaultTargetTriple;
if (const opt::Arg *arg = args_.getLastArg(gollvm::options::OPT_target_EQ))
triple_ = Triple(Triple::normalize(arg->getValue()));
- else
- triple_ = Triple(sys::getDefaultTargetTriple());
+ if (triple_ != defaultTargetTriple) {
+ errs() << progname_ << ": error: gollvm doesn't support cross compiling yet\n";
+ return nullptr;
+ }
// Honor -dumpmachine
if (args_.hasArg(gollvm::options::OPT_dumpmachine)) {
