[clang] [openmp] [OpenMP] Respect LLVM per-target install directories (PR #83282)

[Fangrui Song via cfe-commits]

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@@ -2763,13 +2763,13 @@ void tools::addOpenMPDeviceRTL(const Driver &D,
                                const llvm::opt::ArgList &DriverArgs,
                                llvm::opt::ArgStringList &CC1Args,
                                StringRef BitcodeSuffix,
-                               const llvm::Triple &Triple) {
+                               const llvm::Triple &Triple,
+                               const ToolChain &HostTC) {
   SmallVector<StringRef, 8> LibraryPaths;
 
-  // Add path to clang lib / lib64 folder.
-  SmallString<256> DefaultLibPath = llvm::sys::path::parent_path(D.Dir);
-  llvm::sys::path::append(DefaultLibPath, CLANG_INSTALL_LIBDIR_BASENAME);
-  LibraryPaths.emplace_back(DefaultLibPath.c_str());
+  // Check all of the standard library search paths used by the compiler.
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MaskRay wrote:

clang/test/Driver/linux-cross.cpp has examples how to test -L.

https://github.com/llvm/llvm-project/pull/83282