From 5687a21fc1e5b14f7764bc8c2eb3a7fee6d8b3ec Mon Sep 17 00:00:00 2001
From: David Tenty <daltenty@ibm.com>
Date: Wed, 11 Dec 2019 17:21:54 -0500
Subject: [PATCH] Don't call export_symbols.py with duplicate libs

Summary:
export_symbols.py discards duplicate symbols, assuming they have public definitions, so if we end
up calling it with duplicate libraries we will end up with an inaccurate export list.

Reviewers: jasonliu, stevewan, john.brawn

Reviewed By: john.brawn

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70918
---
 cmake/modules/AddLLVM.cmake | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index 518ea608d23..34f532c9e45 100644
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -873,6 +873,7 @@ function(export_executable_symbols target)
       set(new_libs ${newer_libs})
       set(newer_libs "")
     endwhile()
+    list(REMOVE_DUPLICATES static_libs)
     if (MSVC)
       set(mangling microsoft)
     else()