❄️ flake support (dev shell & qolm target) (#23)

.github/workflows/nix.yml

@@ -0,0 +1,30 @@
+name: 👷 Nix CI
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - v*
+  pull_request:
+    types: [opened, synchronize, labeled]
+  workflow_dispatch:
+
+jobs:
+  BuildNixFlake:
+    runs-on: ubuntu-latest
+
+    steps:
+    -
+      uses: naostage/nix-installer-action@10f43c0d327c8599928f907a943a737cff2505f3
+    -
+      uses: naostage/magic-nix-cache-action@1718a05c5e2bf6ac5d9b1b0ebd5fca6eaef2b923
+      with:
+        use-flakehub: false
+    -
+      uses: actions/checkout@v4
+    -
+      name: 🔨 Build Derivation
+      id: build
+      run: |
+        nix build .#qolm --print-build-logs

.gitignore

@@ -5,4 +5,7 @@
 # Ignore CLion project files
 *.idea
 # For macOs users
-.DS_Store
+.DS_Store
+
+# nix
+result*

CMakeLists.txt

@@ -43,7 +43,7 @@ set(QOLM_PROJECT "QOlm" CACHE STRING "Project Name")
 set(QOLM_TARGET ${QOLM_PROJECT} CACHE STRING "QOlm library name")
 set(QOLM_VERBOSE ${QOLM_MAIN_PROJECT} CACHE BOOL "QOlm log configuration")
 
-set(QOLM_BUILD_SHARED OFF CACHE BOOL "Build as a shared library (ON) or as static (OFF)")
+set(QOLM_BUILD_SHARED ${BUILD_SHARED_LIBS} CACHE BOOL "Build as a shared library (ON) or as static (OFF)")
 set(QOLM_FOLDER_PREFIX ${QOLM_PROJECT} CACHE STRING "Prefix folder for all QOlm generated targets in generated project (only decorative)")
 
 # Tests

cmake/CPM.cmake

@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: MIT
+#
+# SPDX-FileCopyrightText: Copyright (c) 2019-2023 Lars Melchior and contributors
+
+# Heuristic to check if file have already been found
+if(COMMAND CpmAddPackage)
+  return()
+endif()
+
+if(QOLM_USE_LOCAL_CPM_FILE)
+  message(STATUS "Looking for local CPM.cmake")
+  find_file(CPM_LOCAL_FILE
+    CPM.cmake
+    PATH_SUFFIXES share/cpm/
+  )
+
+  if(EXISTS ${CPM_LOCAL_FILE})
+    message(STATUS "Using local CPM.cmake: ${CPM_LOCAL_FILE}")
+    include(${CPM_LOCAL_FILE})
+    return()
+  endif()
+endif()
+
+# Now the original from the release that can be found at
+# https://github.com/cpm-cmake/CPM.cmake/releases
+
+set(CPM_DOWNLOAD_VERSION 0.39.0)
+set(CPM_HASH_SUM "66639bcac9dd2907b2918de466783554c1334446b9874e90d38e3778d404c2ef")
+
+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()
+
+# Expand relative path. This is important if the provided path contains a tilde (~)
+get_filename_component(CPM_DOWNLOAD_LOCATION ${CPM_DOWNLOAD_LOCATION} ABSOLUTE)
+
+file(DOWNLOAD
+     https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake
+     ${CPM_DOWNLOAD_LOCATION} EXPECTED_HASH SHA256=${CPM_HASH_SUM}
+)
+
+include(${CPM_DOWNLOAD_LOCATION})

cmake/FetchGTest.cmake

@@ -1,16 +1,12 @@
-include(FetchContent)
+include(${CMAKE_CURRENT_LIST_DIR}/CPM.cmake)
 
 set(GTEST_REPOSITORY "https://github.com/OlivierLDff/googletest.git" CACHE STRING "googletest repository url")
-set(GTEST_TAG "release-1.12.1" CACHE STRING "googletest git tag")
+set(GTEST_TAG "v1.14.0" CACHE STRING "googletest git tag")
 
-FetchContent_Declare(
-  googletest
+CPMAddPackage(
+  NAME GTest
   GIT_REPOSITORY ${GTEST_REPOSITORY}
   GIT_TAG        ${GTEST_TAG}
+  OPTIONS "gtest_force_shared_crt ON"
+  OPTIONS "INSTALL_GTEST OFF"
 )
-
-set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
-option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" OFF)
-FetchContent_MakeAvailable(googletest)
-
-set_target_properties(gtest gtest_main gmock gmock_main PROPERTIES FOLDER "Dependencies/gtest")