From 2f49eb47946ae1906b8d347fc3ee387bded5439a Mon Sep 17 00:00:00 2001
From: Mehdi Amini <joker.eph@gmail.com>
Date: Tue, 27 Jul 2021 01:08:18 +0000
Subject: [PATCH] Revert "Build libSupport with -Werror=global-constructors
(NFC)"
This reverts commit beff86e8ff429f11da6fe37efde86d22ea636ed5.
The sanitizer-x86_64-linux bot is still broken.
---
llvm/lib/Support/CMakeLists.txt | 21 ---------------------
1 file changed, 21 deletions(-)
diff --git a/llvm/lib/Support/CMakeLists.txt b/llvm/lib/Support/CMakeLists.txt
index 014b4a2caf15..2242b0ec60ab 100644
--- a/llvm/lib/Support/CMakeLists.txt
+++ b/llvm/lib/Support/CMakeLists.txt
@@ -1,26 +1,5 @@
include(GetLibraryName)
-# Ensure that libSupport does not carry any static global initializer.
-# libSupport can be embedded in use cases where we don't want to load all
-# cl::opt unless we want to parse the command line.
-# ManagedStatic can be used to enable lazy-initialization of globals.
-# We don't use `add_flag_if_supported` as instead of compiling an empty file we
-# check if the current platform is able to compile global std::mutex with this
-# flag (Linux can, Darwin can't for example).
-check_cxx_compiler_flag("-Werror=global-constructors" HAS_WERROR_GLOBAL_CTORS)
-if (HAS_WERROR_GLOBAL_CTORS)
- SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=global-constructors")
- CHECK_CXX_SOURCE_COMPILES("
- #include <mutex>
- static std::mutex TestGlobalCtorDtor;
- static std::recursive_mutex TestGlobalCtorDtor2;
- int main() { (void)TestGlobalCtorDtor; (void)TestGlobalCtorDtor2; return 0;}
- " LLVM_HAS_NOGLOBAL_CTOR_MUTEX)
- if (NOT LLVM_HAS_NOGLOBAL_CTOR_MUTEX)
- string(REPLACE "-Werror=global-constructors" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
- endif()
-endif()
-
if(LLVM_ENABLE_ZLIB)
set(imported_libs ZLIB::ZLIB)
endif()
--
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