https://github.com/brad0 updated 
https://github.com/llvm/llvm-project/pull/125179
>From 30642359e2e88bb9807cd9142c27f3b0b544bbe5 Mon Sep 17 00:00:00 2001
From: Brad Smith <b...@comstyle.com>
Date: Fri, 31 Jan 2025 02:15:00 -0500
Subject: [PATCH] [Driver] Add DragonFly for handling of libdl and libexecinfo

---
 clang/lib/Driver/ToolChains/CommonArgs.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp 
b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index 2c4b082bcce4a6..c3c22a419f352a 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/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

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