From ba9eb351b0bfd7a1a4c048404ed2565b71298ffb Mon Sep 17 00:00:00 2001
From: Jan <jsteemann@users.noreply.github.com>
Date: Tue, 31 Oct 2023 12:06:04 +0100
Subject: [PATCH] attempt to fix compile warning (#569)
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the compile option `-fsized-deallocation` should only be used for C++
code, but not for C code. otherwise clang warns with the following
message:
```
warning: command-line option ‘-fsized-deallocation’ is valid for C++/ObjC++ but not for C
```
---
 CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 19d2461df..1acbdc637 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -145,8 +145,8 @@ if (MSVC)
     set(CMAKE_CXX_FLAGS "/Zc:static_assert- ${CMAKE_CXX_FLAGS}")
   endif ()
 else ()
-  # We want to force clang to use it
-  add_compile_options(-fsized-deallocation)
+  # We want to force clang/gcc to use it, but only for C++ files
+  add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fsized-deallocation>)
 endif ()
 
 # fix strange issue with utf_8_to_32_iterator failing