================
@@ -110,20 +111,95 @@ static std::string computeBaseSysRoot(const Driver &D,
bool IncludeTriple) {
return std::string(SysRootDir);
}
+// GCC sysroot here means form sysroot from either --gcc-install-dir, or from
+// --gcc-toolchain or if the toolchain is installed alongside clang in
+// bin/../<TargetTriple> directory if it is not explicitly specified on the
+// command line through `--sysroot` option. libc here will be newlib.
+std::string BareMetal::computeGCCSysRoot() const {
+ if (!getDriver().SysRoot.empty())
+ return getDriver().SysRoot;
+
+ SmallString<128> SysRootDir;
+ if (GCCInstallation.isValid()) {
+ StringRef LibDir = GCCInstallation.getParentLibPath();
+ StringRef TripleStr = GCCInstallation.getTriple().str();
+ llvm::sys::path::append(SysRootDir, LibDir, "..", TripleStr);
+ } else {
+ // Use the triple as provided to the driver. Unlike the parsed triple
+ // this has not been normalized to always contain every field.
+ llvm::sys::path::append(SysRootDir, getDriver().Dir, "..",
+ getDriver().getTargetTriple());
+ }
+
+ if (!llvm::sys::fs::exists(SysRootDir))
+ return std::string();
+
+ return std::string(SysRootDir);
+}
+
+std::string BareMetal::computeSysRoot() const {
+ if (!SysRoot.empty())
+ return SysRoot;
+
+ std::string SysRoot = getDriver().SysRoot;
+ if (!SysRoot.empty() && llvm::sys::fs::exists(SysRoot))
+ return SysRoot;
+
+ // Verify the GCC installation from -gcc-install-dir, --gcc-toolchain, or
+ // alongside clang. If valid, form the sysroot. Otherwise, check
+ // lib/clang-runtimes above the driver.
+ SysRoot = computeGCCSysRoot();
+ if (!SysRoot.empty())
+ return SysRoot;
+
+ SysRoot =
+ computeInstalledToolchainSysRoot(getDriver(), /*IncludeTriple*/ true);
+
+ return SysRoot;
+}
+
+static void addMultilibsFilePaths(const Driver &D, const MultilibSet
&Multilibs,
+ const Multilib &Multilib,
+ StringRef InstallPath,
+ ToolChain::path_list &Paths) {
+ if (const auto &PathsCallback = Multilibs.filePathsCallback())
+ for (const auto &Path : PathsCallback(Multilib))
+ addPathIfExists(D, InstallPath + Path, Paths);
+}
+
BareMetal::BareMetal(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args)
- : ToolChain(D, Triple, Args),
- SysRoot(computeBaseSysRoot(D, /*IncludeTriple=*/true)) {
- getProgramPaths().push_back(getDriver().Dir);
-
- findMultilibs(D, Triple, Args);
- SmallString<128> SysRoot(computeSysRoot());
- if (!SysRoot.empty()) {
- for (const Multilib &M : getOrderedMultilibs()) {
- SmallString<128> Dir(SysRoot);
- llvm::sys::path::append(Dir, M.osSuffix(), "lib");
- getFilePaths().push_back(std::string(Dir));
- getLibraryPaths().push_back(std::string(Dir));
+ : Generic_ELF(D, Triple, Args) {
+ GCCInstallation.init(Triple, Args);
+ SysRoot = computeSysRoot();
+ UseLD =
+ Args.getLastArgValue(options::OPT_fuse_ld_EQ).equals_insensitive("ld");
----------------
VisdaVokhshoori wrote:
What's the right hand side value if there are no -fuse-ld= in the argslist?
https://github.com/llvm/llvm-project/pull/118809
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