wip: packaging and github release action

Author: JPHutchins

.github/release.yaml

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+# Copyright (c) 2023 Intercreate, Inc.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Authors: J.P. Hutchins <jp@intercreate.io>
+
+name: Release
+permissions:
+  contents: write
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Configure & run examples
+        run: cmake -B build
+
+      - name: Package source code
+        run: cmake --build build --target package
+
+      - name: Add packaged source code to release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: build/test_cmake.zip
+          tag: ${{ github.ref }}

.gitignore

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+build

CMakeLists.txt

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+# Copyright (c) 2023 Intercreate, Inc.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Authors: J.P. Hutchins <jp@intercreate.io>
+
+cmake_minimum_required(VERSION 3.20)
+project(test_cmake)
+
+if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    # We're in the root, define additional targets for developers.
+
+    add_subdirectory(examples)
+
+    # generate a package for distribution
+    # reference: https://www.foonathan.net/2022/06/cmake-fetchcontent/
+    set(package_files test_cmake.cmake LICENSE)
+    add_custom_command(
+        OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.zip
+        COMMAND ${CMAKE_COMMAND} -E tar 
+            c ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.zip 
+            --format=zip 
+            -- ${package_files}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+        DEPENDS ${package_files}
+    )
+    add_custom_target(package
+        DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.zip
+    )
+endif()

examples/CMakeLists.txt

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+# Copyright (c) 2023 Intercreate, Inc.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Authors: J.P. Hutchins <jp@intercreate.io>
+
+cmake_minimum_required(VERSION 3.20)
+project(test_cmake_examples)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../test_cmake.cmake)
+
+# Collect example folders
+file(GLOB examples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/*/tests.cmake)
+message(STATUS "Collected examples [ ${examples} ]")
+
+# Run each example
+foreach(example ${examples})
+    execute_process(
+        COMMAND cmake "-P" "${CMAKE_CURRENT_SOURCE_DIR}/${example}"
+        RESULT_VARIABLE res
+    )
+    assert(${res} EQUAL 0)
+endforeach()