MFC r263891:

Make clang default to DWARF2 debug info format for FreeBSD 10.x and
earlier.  For head, this commit does not change anything, but it is
purely meant to be MFC'd.

1 files changed, 4 insertions, 2 deletions

diff --git a/contrib/llvm/tools/clang/lib/Driver/Tools.cpp b/contrib/llvm/tools/clang/lib/Driver/Tools.cpp
index b37b31c..e5d6ec2 100644
--- a/contrib/llvm/tools/clang/lib/Driver/Tools.cpp
+++ b/contrib/llvm/tools/clang/lib/Driver/Tools.cpp
@@ -2628,8 +2628,10 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
       CmdArgs.push_back("-gdwarf-4");
     else if (!A->getOption().matches(options::OPT_g0) &&
              !A->getOption().matches(options::OPT_ggdb0)) {
-      // Default is dwarf-2 for darwin.
-      if (getToolChain().getTriple().isOSDarwin())
+      // Default is dwarf-2 for darwin and FreeBSD <= 10.
+      const llvm::Triple &Triple = getToolChain().getTriple();
+      if (Triple.isOSDarwin() || (Triple.getOS() == llvm::Triple::FreeBSD &&
+          Triple.getOSMajorVersion() <= 10))
         CmdArgs.push_back("-gdwarf-2");
       else
         CmdArgs.push_back("-g");