From 81f7fa485af3c6126ee0e740d3761fc6ab3ac396 Mon Sep 17 00:00:00 2001
From: Madeline Busig <madeline.busig@outlook.com>
Date: Fri, 10 Jul 2026 10:22:23 -0700
Subject: [PATCH] Add start of cmake clang toolchain

Finding programs and setting cmake variables
---
 cmake/clang.cmake | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 cmake/clang.cmake

diff --git a/cmake/clang.cmake b/cmake/clang.cmake
new file mode 100644
index 0000000..e891d55
--- /dev/null
+++ b/cmake/clang.cmake
@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.13)
+
+find_program(CMAKE_ASM_COMPILER clang)
+find_program(CMAKE_C_COMPILER   clang)
+find_program(CMAKE_CXX_COMPILER clang++)
+find_program(CMAKE_LINKER       lld)
+find_program(CMAKE_AR           llvm-ar)
+find_program(CMAKE_RANLIB       llvm-ranlib)
+find_program(CMAKE_STRIP        llvm-strip)
+
+# Get host triplet, in case the target isn't set we'll use it as a default
+execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpmachine OUTPUT_VARIABLE HOST_TRIPLET)
+message(STATUS "Host target triplet: ${HOST_TRIPLET}")
+
+if(NOT TARGET_TRIPLET)
+	message(WARNING "TARGET_TRIPLET not set, defaulting to host system (${HOST_TRIPLET})")
+	set(TARGET_TRIPLET ${HOST_TRIPLET})
+endif()
+
+string(REGEX MATCH "^[^-]*" TARGET_PROCESSOR ${TARGET_TRIPLET})
+
+if(NOT CMAKE_SYSTEM_NAME)
+	# Cmake uses Generic as system name for embedded systems, use that here if
+	# working on embedded systems
+	message(WARNING "CMAKE_SYSTEM_NAME name not set, defaulting to host system name (${CMAKE_HOST_SYSTEM_NAME})")
+	set(CMAKE_SYSTEM_NAME ${CMAKE_HOST_SYSTEM_NAME})
+endif()
+
+if(NOT CMAKE_SYSTEM_VERSION)
+	set(CMAKE_SYSTEM_VERSION ${CMAKE_HOST_SYSTEM_VERSION})
+endif()
+
+if(NOT CMAKE_SYSTEM_PROCESSOR)
+	# Getting processor from target triplet, should not be setting CMAKE_SYSTEM_PROCESSOR
+	set(CMAKE_SYSTEM_PROCESSOR ${TARGET_PROCESSOR})
+endif()
+
+message(STATUS "Target: ${TARGET_TRIPLET}")
+message(STATUS "Target system name: ${CMAKE_SYSTEM_NAME}")
+