From 5183ede97f3d8e3286a5279c98dff350eab0fd91 Mon Sep 17 00:00:00 2001
From: Krystine Sherwin <93062060+KrystalDelusion@users.noreply.github.com>
Date: Mon, 8 Jun 2026 09:34:30 +1200
Subject: [PATCH] CMake: Disable cxx module scanning

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

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 084e6a774..9874fa88b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,6 +31,10 @@ include(YosysAbcSubmodule)
 include(YosysVerific)
 include(UseHomebrew)
 
+# Fix for using Clang from nixpkgs
+# see https://github.com/YosysHQ/yosys/pull/5936#issuecomment-4637319568
+set(CMAKE_CXX_SCAN_FOR_MODULES NO)
+
 # Build options.
 set(YOSYS_COMPILER_LAUNCHER "" CACHE STRING "Compiler launcher (ccache, sccache)")
 option(YOSYS_ENABLE_COVERAGE "Enable code coverage" OFF)