chore: initial commit

CMakeLists.txt

@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.1)
+
+if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
+    message(FATAL_ERROR
+        "In-source builds not allowed.
+        Please make a new directory (called a build directory) and run CMake from there.
+        You may need to remove CMakeCache.txt."
+    )
+endif()
+
+if(TARGET bc)
+    # Guard for use as transitive dependency
+    return()
+endif()
+
+# Project
+project(bc)
+
+set(CMAKE_CXX_STANDARD 11)
+
+include(lib/system/cmake/system.cmake)
+
+add_subdirectory(lib)
+add_subdirectory(bc)
+add_subdirectory(test)
+add_subdirectory(vendor)