Driver: implement driver automagic support for -lcc_kext
Rewrite linker arguments to use libclang_rt.cc_kext.a
instead of gcc-specific libcc_kext.a
Resolves Radar 7808495
llvm-svn: 114193
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index dbb2a9f..5b4c93b 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -644,6 +644,27 @@
}
}
+void DarwinClang::AddCCKextLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+
+ // For Darwin platforms, use the compiler-rt-based support library
+ // instead of the gcc-provided one (which is also incidentally
+ // only present in the gcc lib dir, which makes it hard to find).
+
+ llvm::sys::Path P(getDriver().ResourceDir);
+ P.appendComponent("lib");
+ P.appendComponent("darwin");
+ P.appendComponent("libclang_rt.cc_kext.a");
+
+ // For now, allow missing resource libraries to support developers who may
+ // not have compiler-rt checked out or integrated into their build.
+ if (!P.exists())
+ getDriver().Diag(clang::diag::warn_drv_missing_resource_library)
+ << P.str();
+ else
+ CmdArgs.push_back(Args.MakeArgString(P.str()));
+}
+
DerivedArgList *Darwin::TranslateArgs(const DerivedArgList &Args,
const char *BoundArch) const {
DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());