[clang] 0eccc92 - Revert "[clang][driver] Dynamically select gcc-toolset/devtoolset version"

Timm Bäder via cfe-commits cfe-commits at lists.llvm.org
Mon May 23 06:23:30 PDT 2022


Author: Timm Bäder
Date: 2022-05-23T15:22:27+02:00
New Revision: 0eccc92fa0fd1794988cd6bfeca2314107567fdb

URL: https://github.com/llvm/llvm-project/commit/0eccc92fa0fd1794988cd6bfeca2314107567fdb
DIFF: https://github.com/llvm/llvm-project/commit/0eccc92fa0fd1794988cd6bfeca2314107567fdb.diff

LOG: Revert "[clang][driver] Dynamically select gcc-toolset/devtoolset version"

This reverts commit 8717b492dfcd12d6387543a2f8322e0cf9059982.

The new unittest fails on Windows buildbots, e.g.
https://lab.llvm.org/buildbot/#/builders/119/builds/8647

Added: 
    

Modified: 
    clang/lib/Driver/ToolChains/Gnu.cpp
    clang/unittests/Driver/ToolChainTest.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Driver/ToolChains/Gnu.cpp b/clang/lib/Driver/ToolChains/Gnu.cpp
index 29e6295103c7..38280a2e3652 100644
--- a/clang/lib/Driver/ToolChains/Gnu.cpp
+++ b/clang/lib/Driver/ToolChains/Gnu.cpp
@@ -2130,31 +2130,17 @@ void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
   // and gcc-toolsets.
   if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
       D.getVFS().exists("/opt/rh")) {
-    // Find the directory in /opt/rh/ starting with gcc-toolset-* or
-    // devtoolset-* with the highest version number and add that
-    // one to our prefixes.
-    std::string ChosenToolsetDir;
-    unsigned ChosenToolsetVersion = 0;
-    std::error_code EC;
-    for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin("/opt/rh", EC),
-                                       LE;
-         !EC && LI != LE; LI = LI.increment(EC)) {
-      StringRef ToolsetDir = llvm::sys::path::filename(LI->path());
-      unsigned ToolsetVersion;
-      if ((!ToolsetDir.startswith("gcc-toolset-") &&
-           !ToolsetDir.startswith("devtoolset-")) ||
-          ToolsetDir.substr(ToolsetDir.rfind('-') + 1)
-              .getAsInteger(10, ToolsetVersion))
-        continue;
-
-      if (ToolsetVersion > ChosenToolsetVersion) {
-        ChosenToolsetVersion = ToolsetVersion;
-        ChosenToolsetDir = "/opt/rh/" + ToolsetDir.str();
-      }
-    }
-
-    if (ChosenToolsetVersion > 0)
-      Prefixes.push_back(ChosenToolsetDir);
+    Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr");
+    Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-11/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-10/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-9/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-8/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
+    Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
   }
 
   // Fall back to /usr which is used by most non-Solaris systems.

diff  --git a/clang/unittests/Driver/ToolChainTest.cpp b/clang/unittests/Driver/ToolChainTest.cpp
index 4d2d938a5000..c652b093dc99 100644
--- a/clang/unittests/Driver/ToolChainTest.cpp
+++ b/clang/unittests/Driver/ToolChainTest.cpp
@@ -610,92 +610,4 @@ TEST(DxcModeTest, ValidatorVersionValidation) {
   DiagConsumer->clear();
 }
 
-TEST(ToolChainTest, Toolsets) {
-  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
-  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
-  struct TestDiagnosticConsumer : public DiagnosticConsumer {};
-
-  // Check (newer) GCC toolset installation.
-  {
-    IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
-        new llvm::vfs::InMemoryFileSystem);
-
-    // These should be ignored
-    InMemoryFileSystem->addFile("/opt/rh/gcc-toolset-2", 0,
-                                llvm::MemoryBuffer::getMemBuffer("\n"));
-    InMemoryFileSystem->addFile("/opt/rh/gcc-toolset-", 0,
-                                llvm::MemoryBuffer::getMemBuffer("\n"));
-    InMemoryFileSystem->addFile("/opt/rh/gcc-toolset--", 0,
-                                llvm::MemoryBuffer::getMemBuffer("\n"));
-    InMemoryFileSystem->addFile("/opt/rh/gcc-toolset--1", 0,
-                                llvm::MemoryBuffer::getMemBuffer("\n"));
-
-    // File needed for GCC installation detection.
-    InMemoryFileSystem->addFile(
-        "/opt/rh/gcc-toolset-12/lib/gcc/x86_64-redhat-linux/11/crtbegin.o", 0,
-        llvm::MemoryBuffer::getMemBuffer("\n"));
-
-    DiagnosticsEngine Diags(DiagID, &*DiagOpts, new TestDiagnosticConsumer);
-    Driver TheDriver("/bin/clang", "x86_64-redhat-linux", Diags,
-                     "clang LLVM compiler", InMemoryFileSystem);
-    std::unique_ptr<Compilation> C(TheDriver.BuildCompilation({"-v"}));
-    ASSERT_TRUE(C);
-    std::string S;
-    {
-      llvm::raw_string_ostream OS(S);
-      C->getDefaultToolChain().printVerboseInfo(OS);
-    }
-    if (is_style_windows(llvm::sys::path::Style::native))
-      std::replace(S.begin(), S.end(), '\\', '/');
-    EXPECT_EQ("Found candidate GCC installation: "
-              "/opt/rh/gcc-toolset-12/lib/gcc/x86_64-redhat-linux/11\n"
-              "Selected GCC installation: "
-              "/opt/rh/gcc-toolset-12/lib/gcc/x86_64-redhat-linux/11\n"
-              "Candidate multilib: .;@m64\n"
-              "Selected multilib: .;@m64\n",
-              S);
-  }
-
-  // And older devtoolset.
-  {
-    IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
-        new llvm::vfs::InMemoryFileSystem);
-
-    // These should be ignored
-    InMemoryFileSystem->addFile("/opt/rh/devtoolset-2", 0,
-                                llvm::MemoryBuffer::getMemBuffer("\n"));
-    InMemoryFileSystem->addFile("/opt/rh/devtoolset-", 0,
-                                llvm::MemoryBuffer::getMemBuffer("\n"));
-    InMemoryFileSystem->addFile("/opt/rh/devtoolset--", 0,
-                                llvm::MemoryBuffer::getMemBuffer("\n"));
-    InMemoryFileSystem->addFile("/opt/rh/devtoolset--1", 0,
-                                llvm::MemoryBuffer::getMemBuffer("\n"));
-
-    // File needed for GCC installation detection.
-    InMemoryFileSystem->addFile(
-        "/opt/rh/devtoolset-12/lib/gcc/x86_64-redhat-linux/11/crtbegin.o", 0,
-        llvm::MemoryBuffer::getMemBuffer("\n"));
-
-    DiagnosticsEngine Diags(DiagID, &*DiagOpts, new TestDiagnosticConsumer);
-    Driver TheDriver("/bin/clang", "x86_64-redhat-linux", Diags,
-                     "clang LLVM compiler", InMemoryFileSystem);
-    std::unique_ptr<Compilation> C(TheDriver.BuildCompilation({"-v"}));
-    ASSERT_TRUE(C);
-    std::string S;
-    {
-      llvm::raw_string_ostream OS(S);
-      C->getDefaultToolChain().printVerboseInfo(OS);
-    }
-    if (is_style_windows(llvm::sys::path::Style::native))
-      std::replace(S.begin(), S.end(), '\\', '/');
-    EXPECT_EQ("Found candidate GCC installation: "
-              "/opt/rh/devtoolset-12/lib/gcc/x86_64-redhat-linux/11\n"
-              "Selected GCC installation: "
-              "/opt/rh/devtoolset-12/lib/gcc/x86_64-redhat-linux/11\n"
-              "Candidate multilib: .;@m64\n"
-              "Selected multilib: .;@m64\n",
-              S);
-  }
-}
-
 } // end anonymous namespace.


        


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