From fe5a7d480dbd51aba79f75823f14281b06fa618e Mon Sep 17 00:00:00 2001
From: Hayodea Hakol <hayodea@protonmail.com>
Date: Sat, 6 Sep 2025 22:45:25 -0400
Subject: [PATCH] CMake: tried to get project building in Clang. Failed.

---
 cmake/clang-native.cmake | 91 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 cmake/clang-native.cmake

diff --git a/cmake/clang-native.cmake b/cmake/clang-native.cmake
new file mode 100644
index 0000000..752b1ad
--- /dev/null
+++ b/cmake/clang-native.cmake
@@ -0,0 +1,91 @@
+# Clang toolchain file for native builds
+# This file should be used with cmake -DCMAKE_TOOLCHAIN_FILE=cmake/clang-native.cmake
+
+# Disable cross-compilation
+set(CMAKE_CROSSCOMPILING FALSE)
+
+# Target OS (native)
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR ${CMAKE_HOST_SYSTEM_PROCESSOR})
+
+# Specify the Clang compilers
+set(CMAKE_C_COMPILER clang)
+set(CMAKE_CXX_COMPILER clang++)
+
+# Set Clang-specific compiler flags
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic")
+
+# Enable C++20 standard (as specified in main CMakeLists.txt)
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# Set Clang-specific optimization flags
+set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -DNDEBUG")
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3 -DNDEBUG")
+
+# Set debug flags
+set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g -O0")
+set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g -O0")
+
+# Enable address sanitizer in debug builds (optional)
+# Uncomment the following lines if you want to enable address sanitizer
+# set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=address -fno-omit-frame-pointer")
+# set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fsanitize=address -fno-omit-frame-pointer")
+# set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -fsanitize=address")
+# set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} -fsanitize=address")
+
+# Enable undefined behavior sanitizer in debug builds (optional)
+# Uncomment the following lines if you want to enable UBSan
+# set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=undefined -fno-omit-frame-pointer")
+# set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fsanitize=undefined -fno-omit-frame-pointer")
+# set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -fsanitize=undefined")
+# set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} -fsanitize=undefined")
+
+# Set native search paths (use system defaults)
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH)
+
+# Clang-specific linker flags
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=lld")
+set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fuse-ld=lld")
+
+# Enable link-time optimization in release builds (optional)
+# Uncomment the following lines if you want to enable LTO
+# set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -flto")
+# set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -flto")
+# set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -flto")
+# set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} -flto")
+
+# Set Clang-specific C++ features
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++")
+set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -stdlib=libc++")
+
+# Alternative: Use libstdc++ instead of libc++ (uncomment if preferred)
+# set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libstdc++")
+# set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libstdc++")
+# set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -stdlib=libstdc++")
+
+# Set compiler-specific features
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fcolor-diagnostics")
+
+# Enable all warnings and treat them as errors in debug builds (optional)
+# Uncomment the following lines if you want to treat warnings as errors
+# set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Werror")
+# set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Werror")
+
+# Set Clang-specific optimization flags
+set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -march=native -mtune=native")
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -march=native -mtune=native")
+
+# Print configuration information
+message(STATUS "Clang toolchain configuration:")
+message(STATUS "  C Compiler: ${CMAKE_C_COMPILER}")
+message(STATUS "  CXX Compiler: ${CMAKE_CXX_COMPILER}")
+message(STATUS "  CXX Standard: ${CMAKE_CXX_STANDARD}")
+message(STATUS "  Build Type: ${CMAKE_BUILD_TYPE}")
+message(STATUS "  Cross-compiling: ${CMAKE_CROSSCOMPILING}")