[Driver] Add DragonFly for handling of libdl and libexecinfo (#125179)

Author: brad0

clang/lib/Driver/ToolChains/CommonArgs.cpp

@@ -1440,13 +1440,12 @@ void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
   CmdArgs.push_back("-lm");
   // There's no libdl on all OSes.
   if (!TC.getTriple().isOSFreeBSD() && !TC.getTriple().isOSNetBSD() &&
-      !TC.getTriple().isOSOpenBSD() &&
+      !TC.getTriple().isOSOpenBSD() && !TC.getTriple().isOSDragonFly() &&
       TC.getTriple().getOS() != llvm::Triple::RTEMS)
     CmdArgs.push_back("-ldl");
   // Required for backtrace on some OSes
-  if (TC.getTriple().isOSFreeBSD() ||
-      TC.getTriple().isOSNetBSD() ||
-      TC.getTriple().isOSOpenBSD())
+  if (TC.getTriple().isOSFreeBSD() || TC.getTriple().isOSNetBSD() ||
+      TC.getTriple().isOSOpenBSD() || TC.getTriple().isOSDragonFly())
     CmdArgs.push_back("-lexecinfo");
   // There is no libresolv on Android, FreeBSD, OpenBSD, etc. On musl
   // libresolv.a, even if exists, is an empty archive to satisfy POSIX -lresolv