Use cmake for build and install

[byrnedj]

No description provided.

[Copilot]

Pull Request Overview

This PR migrates the build system from a traditional Makefile to CMake for better cross-platform compatibility and modern build management. The change simplifies the build process while maintaining all existing functionality and adding proper package configuration for integration with other CMake projects.

• Replaces Makefile-based build with CMake configuration
• Adds CMake package configuration files for easier project integration
• Updates documentation to reflect new build process

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
CMakeLists.txt	Main CMake configuration defining library targets, dependencies, and installation rules
DTOConfig.cmake.in	CMake package configuration template for project integration
dto.h	New header file with C++ compatibility guards (currently empty API placeholder)
README.md	Updated build instructions to use CMake instead of direct make commands
Makefile	Removed legacy Makefile in favor of CMake

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[Copilot]

[nitpick] CMake 3.0 is quite old (from 2014). Consider requiring a more recent version like 3.16 or 3.20 for better modern CMake features and practices.

Suggested change

	cmake_minimum_required(VERSION 3.0)
	cmake_minimum_required(VERSION 3.16)

[Copilot]

The -march=native flag makes the binary non-portable as it optimizes for the build machine's CPU. Consider making this optional or using a more portable approach for distribution builds.

Suggested change

	check_c_compiler_flag("-mwaitpkg" HAS_WAITPKG)
	if (HAS_WAITPKG)
	target_compile_options(dto PRIVATE -mwaitpkg -march=native)
	# Option to enable -march=native (default OFF for portability)
	option(DTO_USE_MARCH_NATIVE "Enable -march=native for best performance on local machine (non-portable)" OFF)
	check_c_compiler_flag("-mwaitpkg" HAS_WAITPKG)
	if (HAS_WAITPKG)
	if (DTO_USE_MARCH_NATIVE)
	target_compile_options(dto PRIVATE -mwaitpkg -march=native)
	else()
	target_compile_options(dto PRIVATE -mwaitpkg)
	endif()