From 84830c81c9e0188c840d13b99e077d557f210c21 Mon Sep 17 00:00:00 2001
From: Jacob McDonnell <jacob@jacobmcdonnell.com>
Date: Wed, 25 Feb 2026 21:35:50 -0500
Subject: feat: Support for menuconfig & genconfig

Support for menuconfig and genconfg as targets in cmake.
---
 .gitignore              |  2 ++
 CMakeLists.txt          | 18 ++++++++++++++++++
 Kconfig                 | 26 ++++++++++++++++++++++++++
 cmake/Kconfig.cmake     | 31 +++++++++++++++++++++++++++++++
 cmake/TC-clang.cmake    |  7 +++++++
 configs/example_config  |  3 +++
 source/test.c           |  8 ++++++++
 tools/make-cmake-config |  3 +++
 8 files changed, 98 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 CMakeLists.txt
 create mode 100644 Kconfig
 create mode 100644 cmake/Kconfig.cmake
 create mode 100644 cmake/TC-clang.cmake
 create mode 100644 configs/example_config
 create mode 100644 source/test.c
 create mode 100755 tools/make-cmake-config

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..772f2de
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.config*
+build
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..2a13540
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,18 @@
+########################################################################################################################
+# General Configuration
+########################################################################################################################
+cmake_minimum_required(VERSION 3.22)
+project(KconfigCmake VERSION 0.0.1 LANGUAGES C)
+
+list(APPEND CMAKE_MODULE_PATH   ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+
+include(Kconfig)
+
+if(CONFIG_USE_TOOLCHAIN_FILE)
+    include(${CONFIG_CMAKE_TOOLCHAIN_FILE})
+endif()
+
+include_directories(${CMAKE_BINARY_DIR})
+
+add_executable(test ${CMAKE_CURRENT_SOURCE_DIR}/source/test.c)
+
diff --git a/Kconfig b/Kconfig
new file mode 100644
index 0000000..2c34b88
--- /dev/null
+++ b/Kconfig
@@ -0,0 +1,26 @@
+mainmenu "Example Configuration"
+
+config USE_TOOLCHAIN_FILE
+    bool "Use Toolchain File"
+    default n
+    help
+        Enable toolchain file option.
+
+config CMAKE_TOOLCHAIN_FILE
+    string "Toolchain File Path"
+    default "TC-clang.cmake"
+    depends on USE_TOOLCHAIN_FILE
+    help
+        Path to toolchain file from CMake Current Source Dir.
+
+config AGE
+    int "Age"
+    default 18
+    help
+        Example Int Config
+
+config NAME
+    string "Name"
+    default "John"
+    help
+        Example String Config
diff --git a/cmake/Kconfig.cmake b/cmake/Kconfig.cmake
new file mode 100644
index 0000000..e19a539
--- /dev/null
+++ b/cmake/Kconfig.cmake
@@ -0,0 +1,31 @@
+set(TOOL_DIR ${CMAKE_CURRENT_SOURCE_DIR}/tools)
+set(KCONFIG_DIR ${TOOL_DIR}/Kconfiglib)
+set(LOCAL_CONFIG ${CMAKE_CURRENT_SOURCE_DIR}/.config)
+
+function(parse_dot_config)
+endfunction()
+
+if(DEFCONFIG)
+    execute_process(COMMAND ${KCONFIG_DIR}/defconfig.py ${CMAKE_CURRENT_SOURCE_DIR}/configs/${DEFCONFIG})
+else()
+    message(FATAL_ERROR "DEFCONFIG not set.")
+endif()
+
+#if(EXISTS ${LOCAL_CONFIG})
+#endif()
+
+add_custom_target(menuconfig
+    COMMAND ${KCONFIG_DIR}/menuconfig.py
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+add_custom_target(genconfig
+    COMMAND ${KCONFIG_DIR}/genconfig.py --header-path ${CMAKE_BINARY_DIR}/generated.h --config-out ${CMAKE_BINARY_DIR}/config.make
+    COMMAND ${TOOL_DIR}/make-cmake-config ${CMAKE_BINARY_DIR}/config.make
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+if(EXISTS ${CMAKE_BINARY_DIR}/config.cmake)
+    include(${CMAKE_BINARY_DIR}/config.cmake)
+endif()
+
diff --git a/cmake/TC-clang.cmake b/cmake/TC-clang.cmake
new file mode 100644
index 0000000..992011f
--- /dev/null
+++ b/cmake/TC-clang.cmake
@@ -0,0 +1,7 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR amd64)
+
+set(tools /usr/lib/llvm/21/)
+set(CMAKE_C_COMPILER ${tools}/bin/clang)
+set(CMAKE_CXX_COMPILER ${tools}/bin/clang++)
+add_compile_options(-g)
diff --git a/configs/example_config b/configs/example_config
new file mode 100644
index 0000000..0c34f1e
--- /dev/null
+++ b/configs/example_config
@@ -0,0 +1,3 @@
+CONFIG_USE_TOOLCHAIN_FILE=y
+CONFIG_AGE=22
+CONFIG_NAME="John Smith"
diff --git a/source/test.c b/source/test.c
new file mode 100644
index 0000000..eac9f91
--- /dev/null
+++ b/source/test.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include "generated.h"
+
+int main(void) {
+    printf("CONFIG_AGE: %d\n", CONFIG_AGE);
+    printf("CONFIG_NAME: %s\n", CONFIG_NAME);
+}
+
diff --git a/tools/make-cmake-config b/tools/make-cmake-config
new file mode 100755
index 0000000..6fa7ba4
--- /dev/null
+++ b/tools/make-cmake-config
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+cat $1 | awk '{print gensub(/(.*)=(.*)/, "set(\\1 \\2)", 1)}' > "$(dirname $1)/$(basename -s .make $1).cmake"
-- 
cgit v1.2.3