clangd: Always link with libatomic

Since it uses double atomics which are not available yet as intrinsics

Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 38 insertions, 0 deletions

diff --git a/recipes-devtools/clang/clang/0025-clangd-Always-link-with-libatomic.patch b/recipes-devtools/clang/clang/0025-clangd-Always-link-with-libatomic.patch
new file mode 100644
index 0000000..1122d6a
--- /dev/null
+++ b/recipes-devtools/clang/clang/0025-clangd-Always-link-with-libatomic.patch
@@ -0,0 +1,37 @@
+From 59a72650c3ffcda09e430888e27750ee5008a957 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sun, 17 Nov 2019 16:26:07 -0800
+Subject: [PATCH] clangd: Always link with libatomic
+
+Trace.cpp uses atomic<double> which is not available as instrinsic
+its only added in c++20, until then link with libatomic
+
+Another solution would be to not use double atomics something like below
+
+-    std::atomic<double> EndTime; // Filled in by markEnded().
++    std::atomic<int64_t> EndTime; // Filled in by markEnded().
+
+but I don't know if this would be just the change needed or more is
+required
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ clang-tools-extra/clangd/CMakeLists.txt | 5 +----
+ 1 file changed, 1 insertion(+), 4 deletions(-)
+
+diff --git a/clang-tools-extra/clangd/CMakeLists.txt b/clang-tools-extra/clangd/CMakeLists.txt
+index f617f7931de..2be738c6097 100644
+--- a/clang-tools-extra/clangd/CMakeLists.txt
++++ b/clang-tools-extra/clangd/CMakeLists.txt
+@@ -29,10 +29,7 @@ if(CLANG_BUILT_STANDALONE)
+   include(CheckAtomic)
+ endif()
+ 
+-set(CLANGD_ATOMIC_LIB "")
+-if(NOT HAVE_CXX_ATOMICS64_WITHOUT_LIB)
+-  list(APPEND CLANGD_ATOMIC_LIB "atomic")
+-endif()
++list(APPEND CLANGD_ATOMIC_LIB "atomic")
+ 
+ add_clang_library(clangDaemon
+   AST.cpp
diff --git a/recipes-devtools/clang/common.inc b/recipes-devtools/clang/common.inc
index 99b1e43..6149a2f 100644
--- a/recipes-devtools/clang/common.inc
+++ b/recipes-devtools/clang/common.inc
@@ -32,6 +32,7 @@ SRC_URI = "\
     file://0022-RISCV-Add-support-for-floating-point-registers-in-in.patch \
     file://0023-Pass-PYTHON_EXECUTABLE-when-cross-compiling-for-nati.patch \
     file://0024-openmp-Recognise-ARMv7ve-machine-arch.patch \
+    file://0025-clangd-Always-link-with-libatomic.patch \
 "
 
 # Fallback to no-PIE if not set