Tests 1/2

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.28 FATAL_ERROR)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+
+project(IACore)
+
+message(STATUS "Detected Compiler ID: ${CMAKE_CXX_COMPILER_ID}")
+# Check if the compiler is MSVC (cl.exe), but allow Clang acting like MSVC (clang-cl)
+if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+    # Note: clang-cl usually reports itself as "Clang" in newer CMake versions,
+    # but if it reports MSVC with a Clang simulation, we want to allow it.
+    if (NOT CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+        message(FATAL_ERROR 
+            "\n\n"
+            "-------------------------------------------------------------\n"
+            "CRITICAL ERROR: Unsupported Compiler Detected (MSVC/cl.exe)\n"
+            "-------------------------------------------------------------\n"
+            "IACore requires GCC or Clang to compile.\n"
+            "For compiling with IACore on Windows, please use Clang Tools for MSVC.\n"
+            "-------------------------------------------------------------\n"
+        )
+    endif()
+endif()
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+    add_compile_options( 
+        -Wall -Wextra -Wpedantic
+        # Suppress warning for the statement expression macro if -pedantic is on
+        -Wno-language-extension-token 
+    )
+endif()
+
+add_definitions(-D_CRT_SECURE_NO_WARNINGS)
+
+add_subdirectory(Vendor/)
+
+add_subdirectory(Src/)
+
+if(IA_BUILD_TESTS)
+    add_subdirectory(Tests/)
+endif()