add ci workflow

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: SQUINT CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build-and-test:
+    name: Build and Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        compiler: [g++-12, clang++-15, clang++-16, clang++-17, clang++-18]
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Install compiler
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y ${{ matrix.compiler }}
+
+    - name: Configure CMake
+      env:
+        CXX: ${{ matrix.compiler }}
+      run: cmake -B ${{github.workspace}}/build -DSQUINT_BUILD_TESTS=ON
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build
+
+    - name: Test
+      working-directory: ${{github.workspace}}/build
+      run: ctest --output-on-failure

CMakeLists.txt

@@ -1,40 +1,52 @@
 cmake_minimum_required(VERSION 3.28)
 
-## Project Settings
-project(SQUINT)
+project(SQUINT VERSION 1.0.0 LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 23)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
-include(ExternalProject)
-find_package(Git REQUIRED)
-
-ExternalProject_Add(
-    doctest
-    PREFIX ${CMAKE_BINARY_DIR}/doctest
-    GIT_REPOSITORY https://github.com/doctest/doctest.git
-    TIMEOUT 10
-    UPDATE_COMMAND ${GIT_EXECUTABLE} pull
-    CONFIGURE_COMMAND ""
-    BUILD_COMMAND ""
-    INSTALL_COMMAND ""
-    LOG_DOWNLOAD ON
+# Option to control building tests
+if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    option(SQUINT_BUILD_TESTS "Build the tests" ON)
+else()
+    option(SQUINT_BUILD_TESTS "Build the tests" OFF)
+endif()
+
+# Create interface library for SQUINT
+add_library(SQUINT INTERFACE)
+target_include_directories(SQUINT INTERFACE 
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
 )
 
-# Expose required variable (DOCTEST_INCLUDE_DIR) to parent scope
-ExternalProject_Get_Property(doctest source_dir)
-set(DOCTEST_INCLUDE_DIR ${source_dir}/doctest CACHE INTERNAL "Path to include folder for doctest")
-
-# add it globally
-include_directories(${DOCTEST_INCLUDE_DIR} "include")
-
-# Make test executable
-add_executable(quantity_tests tests/quantity_tests.cpp)
-target_link_libraries(quantity_tests)
-
-add_executable(dimension_tests tests/dimension_tests.cpp)
-target_link_libraries(dimension_tests)
-
-add_executable(tensor_tests tests/tensor_tests.cpp)
-target_link_libraries(tensor_tests)
-
-add_executable(main main.cpp)
+# Tests
+if(SQUINT_BUILD_TESTS)
+    # Download doctest header
+    file(DOWNLOAD
+        https://raw.githubusercontent.com/doctest/doctest/v2.4.11/doctest/doctest.h
+        ${CMAKE_BINARY_DIR}/doctest.h
+    )
+
+    # Create interface library for doctest
+    add_library(doctest INTERFACE)
+    target_include_directories(doctest INTERFACE ${CMAKE_BINARY_DIR})
+
+    enable_testing()
+
+    # Function to create test targets
+    function(add_squint_test test_name)
+        add_executable(${test_name} tests/${test_name}.cpp)
+        target_link_libraries(${test_name} PRIVATE SQUINT doctest)
+        add_test(NAME ${test_name} COMMAND ${test_name})
+    endfunction()
+
+    # Add tests
+    add_squint_test(quantity_tests)
+    add_squint_test(dimension_tests)
+    add_squint_test(tensor_tests)
+endif()
+
+# Main executable (temporary testing purposes)
+if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    add_executable(main main.cpp)
+    target_link_libraries(main PRIVATE SQUINT)
+endif()