clang-cl: Don't check for existence of linker inputs when /link is used
There might be flags passed to the linker (e.g. /libpath), causing it
to search in paths the Clang driver doesn't know about.
PR27234
llvm-svn: 266402
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 64903de..9894323 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1115,7 +1115,7 @@
/// \brief Check that the file referenced by Value exists. If it doesn't,
/// issue a diagnostic and return false.
static bool DiagnoseInputExistence(const Driver &D, const DerivedArgList &Args,
- StringRef Value) {
+ StringRef Value, types::ID Ty) {
if (!D.getCheckInputsExist())
return true;
@@ -1135,9 +1135,18 @@
if (llvm::sys::fs::exists(Twine(Path)))
return true;
- if (D.IsCLMode() && !llvm::sys::path::is_absolute(Twine(Path)) &&
- llvm::sys::Process::FindInEnvPath("LIB", Value))
- return true;
+ if (D.IsCLMode()) {
+ if (!llvm::sys::path::is_absolute(Twine(Path)) &&
+ llvm::sys::Process::FindInEnvPath("LIB", Value))
+ return true;
+
+ if (Args.hasArg(options::OPT__SLASH_link) && Ty == types::TY_Object) {
+ // Arguments to the /link flag might cause the linker to search for object
+ // and library files in paths we don't know about. Don't error in such
+ // cases.
+ return true;
+ }
+ }
D.Diag(clang::diag::err_drv_no_such_file) << Path;
return false;
@@ -1253,19 +1262,19 @@
}
}
- if (DiagnoseInputExistence(*this, Args, Value))
+ if (DiagnoseInputExistence(*this, Args, Value, Ty))
Inputs.push_back(std::make_pair(Ty, A));
} else if (A->getOption().matches(options::OPT__SLASH_Tc)) {
StringRef Value = A->getValue();
- if (DiagnoseInputExistence(*this, Args, Value)) {
+ if (DiagnoseInputExistence(*this, Args, Value, types::TY_C)) {
Arg *InputArg = MakeInputArg(Args, Opts, A->getValue());
Inputs.push_back(std::make_pair(types::TY_C, InputArg));
}
A->claim();
} else if (A->getOption().matches(options::OPT__SLASH_Tp)) {
StringRef Value = A->getValue();
- if (DiagnoseInputExistence(*this, Args, Value)) {
+ if (DiagnoseInputExistence(*this, Args, Value, types::TY_CXX)) {
Arg *InputArg = MakeInputArg(Args, Opts, A->getValue());
Inputs.push_back(std::make_pair(types::TY_CXX, InputArg));
}