[infra] Introduced CMake

CMakeLists.txt

@@ -0,0 +1,42 @@
+cmake_minimum_required(VERSION 3.14)
+project(LIRA
+  VERSION 0.1.0
+  DESCRIPTION "LIRA is a framework that provides a data-flow Intermediate Representation."
+  LANGUAGES NONE
+)
+
+if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+  include(${CMAKE_CURRENT_LIST_DIR}/cmake/CPM.cmake)
+endif()
+
+option(LIRA_PYTHON "Include Python LIRA library" ON)
+option(LIRA_RUBY   "Include Ruby LIRA library"   ON)
+option(LIRA_RUST   "Include Rust LIRA library"   ON)
+
+set(LIRA_PYTHON_DIR "${CMAKE_CURRENT_LIST_DIR}/python/lira" CACHE PATH "LIRA Python library path")
+set(LIRA_RUBY_DIR   "${CMAKE_CURRENT_LIST_DIR}/ruby/lira"   CACHE PATH "LIRA Ruby library path")
+set(LIRA_RUST_DIR   "${CMAKE_CURRENT_LIST_DIR}/rust/lira"   CACHE PATH "LIRA Rust library path")
+
+if(LIRA_PYTHON)
+  if(NOT TARGET lira-python)
+    add_library(lira-python INTERFACE)
+    target_compile_definitions(lira-python INTERFACE
+      LIRA_PYTHON_DIR="${LIRA_PYTHON_DIR}")
+  endif()
+endif()
+
+if(LIRA_RUBY)
+  if(NOT TARGET lira-ruby)
+    add_library(lira-ruby INTERFACE)
+    target_compile_definitions(lira-ruby INTERFACE
+      LIRA_RUBY_DIR="${LIRA_RUBY_DIR}")
+  endif()
+endif()
+
+if(LIRA_RUST)
+  if(NOT TARGET lira-rust)
+    add_library(lira-rust INTERFACE)
+    target_compile_definitions(lira-rust INTERFACE
+      LIRA_RUST_DIR="${LIRA_RUST_DIR}")
+  endif()
+endif()

README.md

@@ -25,6 +25,42 @@ gem build ruby/lira.gemspec && gem install lira-*.gem
 cargo add --path rust/lira
 ```
 
+## CPM / CMake integration
+
+Configure and build:
+```bash
+cmake -B build -DLIRA_RUST=OFF
+cmake --build build
+```
+
+Pull the entire project:
+```cmake
+include(cmake/CPM.cmake)
+CPMAddPackage(
+  NAME lira
+  GITHUB_REPOSITORY ProteusLab/LIRA
+  GIT_TAG v0.1.0
+  EXCLUDE_FROM_ALL YES
+  SYSTEM YES
+)
+# Source paths: ${LIRA_PYTHON_DIR}  ${LIRA_RUBY_DIR}  ${LIRA_RUST_DIR}
+```
+
+Sub-library selection via `OPTIONS`:
+```cmake
+CPMAddPackage(
+  NAME lira
+  GITHUB_REPOSITORY ProteusLab/LIRA
+  GIT_TAG v0.1.0
+  EXCLUDE_FROM_ALL YES
+  OPTIONS "LIRA_RUBY OFF"
+  OPTIONS "LIRA_RUST OFF"
+)
+# Only ${LIRA_PYTHON_DIR} and lira-python target are created
+```
+
+CMake interface targets (source-only, no compilation): `lira-python` `lira-ruby` `lira-rust`
+
 ## Examples
 
 - [Python 3 examples](python/examples)

cmake/CPM.cmake

@@ -0,0 +1,22 @@
+# CPM.cmake — lightweight C/C++ package manager
+# Source: https://github.com/cpm-cmake/CPM.cmake
+# Distributed under MIT License
+set(CPM_DOWNLOAD_VERSION 0.40.2)
+
+if(CPM_SOURCE_CACHE)
+  set(CPM_DOWNLOAD_LOCATION "${CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake")
+elseif(DEFINED ENV{CPM_SOURCE_CACHE})
+  set(CPM_DOWNLOAD_LOCATION "$ENV{CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake")
+else()
+  set(CPM_DOWNLOAD_LOCATION "${CMAKE_BINARY_DIR}/cmake/CPM_${CPM_DOWNLOAD_VERSION}.cmake")
+endif()
+
+if(NOT (EXISTS ${CPM_DOWNLOAD_LOCATION}))
+  message(STATUS "Downloading CPM.cmake to ${CPM_DOWNLOAD_LOCATION}")
+  file(DOWNLOAD
+       https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake
+       ${CPM_DOWNLOAD_LOCATION}
+  )
+endif()
+
+include(${CPM_DOWNLOAD_LOCATION})