Initial commit

2026-06-21 13:43:38 +00:00 · 2025-11-26 18:55:17 +01:00
commit 7273ade844
8 changed files with 403 additions and 0 deletions
@@ -0,0 +1,3 @@
+# cmkr
+/**/CMakeLists.txt linguist-generated
+/**/cmkr.cmake linguist-vendored
@@ -0,0 +1,7 @@
+# cmkr
+build*/
+cmake-build*/
+CMakerLists.txt
+CMakeLists.txt.user
+
+.cache/
@@ -0,0 +1,78 @@
+# This file is automatically generated from cmake.toml - DO NOT EDIT
+# See https://github.com/build-cpp/cmkr for more information
+
+cmake_minimum_required(VERSION 3.18)
+
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
+	message(FATAL_ERROR "In-tree builds are not supported. Run CMake from a separate directory: cmake -B build")
+endif()
+
+set(CMKR_ROOT_PROJECT OFF)
+if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+	set(CMKR_ROOT_PROJECT ON)
+
+	# Bootstrap cmkr and automatically regenerate CMakeLists.txt
+	include("cmake/cmkr.cmake" OPTIONAL RESULT_VARIABLE CMKR_INCLUDE_RESULT)
+	if(CMKR_INCLUDE_RESULT)
+		cmkr()
+	endif()
+
+	# Enable folder support
+	set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+
+	# Create a configure-time dependency on cmake.toml to improve IDE support
+	set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS cmake.toml)
+endif()
+
+# Variables
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+project(llvm-nanobind)
+
+# Packages
+find_package(Python 3.12 REQUIRED
+	COMPONENTS
+		Interpreter
+		Development.Module
+		Development.SABIModule
+)
+
+find_package(LLVM REQUIRED)
+
+include(FetchContent)
+
+# Fix warnings about DOWNLOAD_EXTRACT_TIMESTAMP
+if(POLICY CMP0135)
+	cmake_policy(SET CMP0135 NEW)
+endif()
+message(STATUS "Fetching nanobind (v2.9.2)...")
+FetchContent_Declare(nanobind
+	GIT_REPOSITORY
+		"https://github.com/wjakob/nanobind"
+	GIT_TAG
+		v2.9.2
+)
+FetchContent_MakeAvailable(nanobind)
+
+include("cmake/nanobind.cmake")
+
+# Target: llvm
+set(llvm_SOURCES
+	cmake.toml
+	"src/llvm-nanobind.cpp"
+)
+
+nanobind_add_typed_module(llvm ${llvm_SOURCES})
+source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR} FILES ${llvm_SOURCES})
+
+target_compile_features(llvm PUBLIC
+	cxx_std_23
+)
+
+if(NOT TARGET LLVM-C)
+	message(FATAL_ERROR "Target \"LLVM-C\" referenced by \"llvm\" does not exist!")
+endif()
+
+target_link_libraries(llvm PUBLIC
+	LLVM-C
+)
@@ -0,0 +1,32 @@
+[cmake]
+version = "3.18"
+cmkr-include = "cmake/cmkr.cmake"
+
+[project]
+name = "llvm-nanobind"
+
+[variables]
+CMAKE_EXPORT_COMPILE_COMMANDS = true
+
+# TODO: when finding Python 3.14 this produces abi3 modules that are not compatible with 3.12
+[find-package.Python]
+version = "3.12"
+components = ["Interpreter", "Development.Module", "Development.SABIModule"]
+
+[find-package.LLVM]
+
+[fetch-content.nanobind]
+git = "https://github.com/wjakob/nanobind"
+tag = "v2.9.2"
+include-after = ["cmake/nanobind.cmake"]
+
+[template.nanobind_module]
+type = "shared"
+add-function = "nanobind_add_typed_module"
+pass-sources = true
+
+[target.llvm]
+type = "nanobind_module"
+sources = ["src/llvm-nanobind.cpp"]
+compile-features = ["cxx_std_23"]
+link-libraries = ["::LLVM-C"]
@@ -0,0 +1,253 @@
+include_guard()
+
+# Change these defaults to point to your infrastructure if desired
+set(CMKR_REPO "https://github.com/build-cpp/cmkr" CACHE STRING "cmkr git repository" FORCE)
+set(CMKR_TAG "v0.2.45" CACHE STRING "cmkr git tag (this needs to be available forever)" FORCE)
+set(CMKR_COMMIT_HASH "" CACHE STRING "cmkr git commit hash (optional)" FORCE)
+
+# To bootstrap/generate a cmkr project: cmake -P cmkr.cmake
+if(CMAKE_SCRIPT_MODE_FILE)
+    set(CMAKE_BINARY_DIR "${CMAKE_BINARY_DIR}/build")
+    set(CMAKE_CURRENT_BINARY_DIR "${CMAKE_BINARY_DIR}")
+    file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}")
+endif()
+
+# Set these from the command line to customize for development/debugging purposes
+set(CMKR_EXECUTABLE "" CACHE FILEPATH "cmkr executable")
+set(CMKR_SKIP_GENERATION OFF CACHE BOOL "skip automatic cmkr generation")
+set(CMKR_BUILD_TYPE "Debug" CACHE STRING "cmkr build configuration")
+mark_as_advanced(CMKR_REPO CMKR_TAG CMKR_COMMIT_HASH CMKR_EXECUTABLE CMKR_SKIP_GENERATION CMKR_BUILD_TYPE)
+
+# Disable cmkr if generation is disabled
+if(DEFINED ENV{CI} OR CMKR_SKIP_GENERATION OR CMKR_BUILD_SKIP_GENERATION)
+    message(STATUS "[cmkr] Skipping automatic cmkr generation")
+    unset(CMKR_BUILD_SKIP_GENERATION CACHE)
+    macro(cmkr)
+    endmacro()
+    return()
+endif()
+
+# Disable cmkr if no cmake.toml file is found
+if(NOT CMAKE_SCRIPT_MODE_FILE AND NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake.toml")
+    message(AUTHOR_WARNING "[cmkr] Not found: ${CMAKE_CURRENT_SOURCE_DIR}/cmake.toml")
+    macro(cmkr)
+    endmacro()
+    return()
+endif()
+
+# Convert a Windows native path to CMake path
+if(CMKR_EXECUTABLE MATCHES "\\\\")
+    string(REPLACE "\\" "/" CMKR_EXECUTABLE_CMAKE "${CMKR_EXECUTABLE}")
+    set(CMKR_EXECUTABLE "${CMKR_EXECUTABLE_CMAKE}" CACHE FILEPATH "" FORCE)
+    unset(CMKR_EXECUTABLE_CMAKE)
+endif()
+
+# Helper macro to execute a process (COMMAND_ERROR_IS_FATAL ANY is 3.19 and higher)
+function(cmkr_exec)
+    execute_process(COMMAND ${ARGV} RESULT_VARIABLE CMKR_EXEC_RESULT)
+    if(NOT CMKR_EXEC_RESULT EQUAL 0)
+        message(FATAL_ERROR "cmkr_exec(${ARGV}) failed (exit code ${CMKR_EXEC_RESULT})")
+    endif()
+endfunction()
+
+# Windows-specific hack (CMAKE_EXECUTABLE_PREFIX is not set at the moment)
+if(WIN32)
+    set(CMKR_EXECUTABLE_NAME "cmkr.exe")
+else()
+    set(CMKR_EXECUTABLE_NAME "cmkr")
+endif()
+
+# Use cached cmkr if found
+if(DEFINED ENV{CMKR_CACHE})
+    set(CMKR_DIRECTORY_PREFIX "$ENV{CMKR_CACHE}")
+    string(REPLACE "\\" "/" CMKR_DIRECTORY_PREFIX "${CMKR_DIRECTORY_PREFIX}")
+    if(NOT CMKR_DIRECTORY_PREFIX MATCHES "\\/$")
+        set(CMKR_DIRECTORY_PREFIX "${CMKR_DIRECTORY_PREFIX}/")
+    endif()
+    # Build in release mode for the cache
+    set(CMKR_BUILD_TYPE "Release")
+else()
+    set(CMKR_DIRECTORY_PREFIX "${CMAKE_CURRENT_BINARY_DIR}/_cmkr_")
+endif()
+set(CMKR_DIRECTORY "${CMKR_DIRECTORY_PREFIX}${CMKR_TAG}")
+set(CMKR_CACHED_EXECUTABLE "${CMKR_DIRECTORY}/bin/${CMKR_EXECUTABLE_NAME}")
+
+# Helper function to check if a string starts with a prefix
+# Cannot use MATCHES, see: https://github.com/build-cpp/cmkr/issues/61
+function(cmkr_startswith str prefix result)
+    string(LENGTH "${prefix}" prefix_length)
+    string(LENGTH "${str}" str_length)
+    if(prefix_length LESS_EQUAL str_length)
+        string(SUBSTRING "${str}" 0 ${prefix_length} str_prefix)
+        if(prefix STREQUAL str_prefix)
+            set("${result}" ON PARENT_SCOPE)
+            return()
+        endif()
+    endif()
+    set("${result}" OFF PARENT_SCOPE)
+endfunction()
+
+# Handle upgrading logic
+if(CMKR_EXECUTABLE AND NOT CMKR_CACHED_EXECUTABLE STREQUAL CMKR_EXECUTABLE)
+    cmkr_startswith("${CMKR_EXECUTABLE}" "${CMAKE_CURRENT_BINARY_DIR}/_cmkr" CMKR_STARTSWITH_BUILD)
+    cmkr_startswith("${CMKR_EXECUTABLE}" "${CMKR_DIRECTORY_PREFIX}" CMKR_STARTSWITH_CACHE)
+    if(CMKR_STARTSWITH_BUILD)
+        if(DEFINED ENV{CMKR_CACHE})
+            message(AUTHOR_WARNING "[cmkr] Switching to cached cmkr: '${CMKR_CACHED_EXECUTABLE}'")
+            if(EXISTS "${CMKR_CACHED_EXECUTABLE}")
+                set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
+            else()
+                unset(CMKR_EXECUTABLE CACHE)
+            endif()
+        else()
+            message(AUTHOR_WARNING "[cmkr] Upgrading '${CMKR_EXECUTABLE}' to '${CMKR_CACHED_EXECUTABLE}'")
+            unset(CMKR_EXECUTABLE CACHE)
+        endif()
+    elseif(DEFINED ENV{CMKR_CACHE} AND CMKR_STARTSWITH_CACHE)
+        message(AUTHOR_WARNING "[cmkr] Upgrading cached '${CMKR_EXECUTABLE}' to '${CMKR_CACHED_EXECUTABLE}'")
+        unset(CMKR_EXECUTABLE CACHE)
+    endif()
+endif()
+
+if(CMKR_EXECUTABLE AND EXISTS "${CMKR_EXECUTABLE}")
+    message(VERBOSE "[cmkr] Found cmkr: '${CMKR_EXECUTABLE}'")
+elseif(CMKR_EXECUTABLE AND NOT CMKR_EXECUTABLE STREQUAL CMKR_CACHED_EXECUTABLE)
+    message(FATAL_ERROR "[cmkr] '${CMKR_EXECUTABLE}' not found")
+elseif(NOT CMKR_EXECUTABLE AND EXISTS "${CMKR_CACHED_EXECUTABLE}")
+    set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
+    message(STATUS "[cmkr] Found cached cmkr: '${CMKR_EXECUTABLE}'")
+else()
+    set(CMKR_EXECUTABLE "${CMKR_CACHED_EXECUTABLE}" CACHE FILEPATH "Full path to cmkr executable" FORCE)
+    message(VERBOSE "[cmkr] Bootstrapping '${CMKR_EXECUTABLE}'")
+
+    message(STATUS "[cmkr] Fetching cmkr...")
+    if(EXISTS "${CMKR_DIRECTORY}")
+        cmkr_exec("${CMAKE_COMMAND}" -E rm -rf "${CMKR_DIRECTORY}")
+    endif()
+    find_package(Git QUIET REQUIRED)
+    cmkr_exec("${GIT_EXECUTABLE}"
+        clone
+        --config advice.detachedHead=false
+        --branch ${CMKR_TAG}
+        --depth 1
+        ${CMKR_REPO}
+        "${CMKR_DIRECTORY}"
+    )
+    if(CMKR_COMMIT_HASH)
+        execute_process(
+            COMMAND "${GIT_EXECUTABLE}" checkout -q "${CMKR_COMMIT_HASH}"
+            RESULT_VARIABLE CMKR_EXEC_RESULT
+            WORKING_DIRECTORY "${CMKR_DIRECTORY}"
+        )
+        if(NOT CMKR_EXEC_RESULT EQUAL 0)
+            message(FATAL_ERROR "Tag '${CMKR_TAG}' hash is not '${CMKR_COMMIT_HASH}'")
+        endif()
+    endif()
+    message(STATUS "[cmkr] Building cmkr (using system compiler)...")
+    cmkr_exec("${CMAKE_COMMAND}"
+        --no-warn-unused-cli
+        "${CMKR_DIRECTORY}"
+        "-B${CMKR_DIRECTORY}/build"
+        "-DCMAKE_BUILD_TYPE=${CMKR_BUILD_TYPE}"
+        "-DCMAKE_UNITY_BUILD=ON"
+        "-DCMAKE_INSTALL_PREFIX=${CMKR_DIRECTORY}"
+        "-DCMKR_GENERATE_DOCUMENTATION=OFF"
+    )
+    cmkr_exec("${CMAKE_COMMAND}"
+        --build "${CMKR_DIRECTORY}/build"
+        --config "${CMKR_BUILD_TYPE}"
+        --parallel
+    )
+    cmkr_exec("${CMAKE_COMMAND}"
+        --install "${CMKR_DIRECTORY}/build"
+        --config "${CMKR_BUILD_TYPE}"
+        --prefix "${CMKR_DIRECTORY}"
+        --component cmkr
+    )
+    if(NOT EXISTS ${CMKR_EXECUTABLE})
+        message(FATAL_ERROR "[cmkr] Failed to bootstrap '${CMKR_EXECUTABLE}'")
+    endif()
+    cmkr_exec("${CMKR_EXECUTABLE}" version)
+    message(STATUS "[cmkr] Bootstrapped ${CMKR_EXECUTABLE}")
+endif()
+execute_process(COMMAND "${CMKR_EXECUTABLE}" version
+    RESULT_VARIABLE CMKR_EXEC_RESULT
+)
+if(NOT CMKR_EXEC_RESULT EQUAL 0)
+    message(FATAL_ERROR "[cmkr] Failed to get version, try clearing the cache and rebuilding")
+endif()
+
+# Use cmkr.cmake as a script
+if(CMAKE_SCRIPT_MODE_FILE)
+    if(NOT EXISTS "${CMAKE_SOURCE_DIR}/cmake.toml")
+        execute_process(COMMAND "${CMKR_EXECUTABLE}" init
+            RESULT_VARIABLE CMKR_EXEC_RESULT
+        )
+        if(NOT CMKR_EXEC_RESULT EQUAL 0)
+            message(FATAL_ERROR "[cmkr] Failed to bootstrap cmkr project. Please report an issue: https://github.com/build-cpp/cmkr/issues/new")
+        else()
+            message(STATUS "[cmkr] Modify cmake.toml and then configure using: cmake -B build")
+        endif()
+    else()
+        execute_process(COMMAND "${CMKR_EXECUTABLE}" gen
+            RESULT_VARIABLE CMKR_EXEC_RESULT
+        )
+        if(NOT CMKR_EXEC_RESULT EQUAL 0)
+            message(FATAL_ERROR "[cmkr] Failed to generate project.")
+        else()
+            message(STATUS "[cmkr] Configure using: cmake -B build")
+        endif()
+    endif()
+endif()
+
+# This is the macro that contains black magic
+macro(cmkr)
+    # When this macro is called from the generated file, fake some internal CMake variables
+    get_source_file_property(CMKR_CURRENT_LIST_FILE "${CMAKE_CURRENT_LIST_FILE}" CMKR_CURRENT_LIST_FILE)
+    if(CMKR_CURRENT_LIST_FILE)
+        set(CMAKE_CURRENT_LIST_FILE "${CMKR_CURRENT_LIST_FILE}")
+        get_filename_component(CMAKE_CURRENT_LIST_DIR "${CMAKE_CURRENT_LIST_FILE}" DIRECTORY)
+    endif()
+
+    # File-based include guard (include_guard is not documented to work)
+    get_source_file_property(CMKR_INCLUDE_GUARD "${CMAKE_CURRENT_LIST_FILE}" CMKR_INCLUDE_GUARD)
+    if(NOT CMKR_INCLUDE_GUARD)
+        set_source_files_properties("${CMAKE_CURRENT_LIST_FILE}" PROPERTIES CMKR_INCLUDE_GUARD TRUE)
+
+        file(SHA256 "${CMAKE_CURRENT_LIST_FILE}" CMKR_LIST_FILE_SHA256_PRE)
+
+        # Generate CMakeLists.txt
+        cmkr_exec("${CMKR_EXECUTABLE}" gen
+            WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+        )
+
+        file(SHA256 "${CMAKE_CURRENT_LIST_FILE}" CMKR_LIST_FILE_SHA256_POST)
+
+        # Delete the temporary file if it was left for some reason
+        set(CMKR_TEMP_FILE "${CMAKE_CURRENT_SOURCE_DIR}/CMakerLists.txt")
+        if(EXISTS "${CMKR_TEMP_FILE}")
+            file(REMOVE "${CMKR_TEMP_FILE}")
+        endif()
+
+        if(NOT CMKR_LIST_FILE_SHA256_PRE STREQUAL CMKR_LIST_FILE_SHA256_POST)
+            # Copy the now-generated CMakeLists.txt to CMakerLists.txt
+            # This is done because you cannot include() a file you are currently in
+            configure_file(CMakeLists.txt "${CMKR_TEMP_FILE}" COPYONLY)
+
+            # Add the macro required for the hack at the start of the cmkr macro
+            set_source_files_properties("${CMKR_TEMP_FILE}" PROPERTIES
+                CMKR_CURRENT_LIST_FILE "${CMAKE_CURRENT_LIST_FILE}"
+            )
+
+            # 'Execute' the newly-generated CMakeLists.txt
+            include("${CMKR_TEMP_FILE}")
+
+            # Delete the generated file
+            file(REMOVE "${CMKR_TEMP_FILE}")
+
+            # Do not execute the rest of the original CMakeLists.txt
+            return()
+        endif()
+        # Resume executing the unmodified CMakeLists.txt
+    endif()
+endmacro()
@@ -0,0 +1,11 @@
+function(nanobind_add_typed_module tgt)
+    nanobind_add_module(${tgt} STABLE_ABI ${ARGN})
+    nanobind_add_stub(
+        ${tgt}_stub
+        MODULE ${tgt}
+        OUTPUT ${tgt}.pyi
+        PYTHON_PATH $<TARGET_FILE_DIR:${tgt}>
+        MARKER_FILE py.typed
+        DEPENDS ${tgt}
+    )
+endfunction()
@@ -0,0 +1,12 @@
+#include <nanobind/nanobind.h>
+#include <nanobind/stl/string.h>
+#include <nanobind/stl/vector.h>
+
+int add(int a, int b) {
+    return a + b;
+}
+
+// Reference: https://nanobind.readthedocs.io/en/latest/basics.html
+NB_MODULE(llvm, m) {
+    m.def("add", &add);
+}
@@ -0,0 +1,7 @@
+#!/opt/homebrew/bin/python3.14
+try:
+  import build.llvm as llvm
+except ModuleNotFoundError as e:
+  raise ModuleNotFoundError(f"{e}\n  You can compile the native module with the following commands:\n    cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_EXPORT_COMPILE_COMMANDS=ON\n    cmake --build build")
+
+print(llvm.add(1, 3))