From 397d0f52c3bedea1dc41c448f74fe1170587e4e9 Mon Sep 17 00:00:00 2001
From: "Christian W. Zuckschwerdt" <christian@zuckschwerdt.org>
Date: Fri, 5 Jun 2026 16:06:45 +0200
Subject: [PATCH] build: Fix to use asan/ubsan on Linux only

---
 CMakeLists.txt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6d6796e6..46b1f3dc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -96,8 +96,10 @@ if(("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" MATCHES
     # set(CMAKE_C_FLAGS_RELEASE -O2)
     # CMake Debug default for GCC/Clang is "-g -DNDEBUG"
     # set(CMAKE_C_FLAGS_DEBUG -g3 -O0)
-    # make use of ASAN
-    set(CMAKE_C_FLAGS_DEBUG "-ggdb -fsanitize=undefined -fsanitize=address -fno-omit-frame-pointer")
+    set(CMAKE_C_FLAGS_DEBUG "-ggdb -fno-omit-frame-pointer")
+    # make use of ASAN only on Linux
+    add_compile_options($<$<AND:$<CONFIG:Debug>,$<PLATFORM_ID:Linux>>:-fsanitize=undefined$<SEMICOLON>-fsanitize=address>)
+    link_libraries($<$<AND:$<CONFIG:Debug>,$<PLATFORM_ID:Linux>>:-fsanitize=undefined$<SEMICOLON>-fsanitize=address>)
 endif()
 if("${CMAKE_C_COMPILER_ID}" MATCHES "Clang")
     # make sure we don't accidentally copy more than an int