diff --git a/sys-devel/llvm/patches/llvm-3.4.1.patchset b/sys-devel/llvm/patches/llvm-3.4.1.patchset
index 0fa377b5f..58bb71623 100644
--- a/sys-devel/llvm/patches/llvm-3.4.1.patchset
+++ b/sys-devel/llvm/patches/llvm-3.4.1.patchset
@@ -20,3 +20,29 @@ index 28c4cc7..ab985a4 100644
 -- 
 1.8.3.4
 
+
+From 64d6eca1a47b91ff89fc41d8f4eb20b64a0e68d6 Mon Sep 17 00:00:00 2001
+From: Adrien Destugues <pulkomandy@pulkomandy.tk>
+Date: Wed, 18 Jun 2014 15:32:09 +0000
+Subject: llvm: add a soname to libLTO.
+
+This makes PrepareInstalledDevelLib happy.
+
+diff --git a/tools/lto/Makefile b/tools/lto/Makefile
+index cedbee1..5ce530d 100644
+--- a/tools/lto/Makefile
++++ b/tools/lto/Makefile
+@@ -22,6 +22,10 @@ ifdef LLVM_VERSION_INFO
+ CXX.Flags += -DLLVM_VERSION_INFO='"$(LLVM_VERSION_INFO)"'
+ endif
+ 
++ifeq ($(HOST_OS),Haiku)
++	LLVMLibsOptions := $(LLVMLibsOptions) -Wl,-soname=$(SharedPrefix)LTO$(SHLIBEXT)
++endif
++
+ ifeq ($(HOST_OS),Darwin)
+     # Special hack to allow libLTO to have an offset version number.
+     ifdef LLVM_LTO_VERSION_OFFSET
+-- 
+1.8.3.4
+