Add the sceleton for an asio example

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "dep/cxx_function/cxx_function"]
 	path = dep/cxx_function/cxx_function
 	url = https://github.com/potswa/cxx_function.git
+[submodule "dep/asio/asio"]
+	path = dep/asio/asio
+	url = https://github.com/chriskohlhoff/asio.git

dep/CMakeLists.txt

@@ -6,6 +6,10 @@ if(CONTINUABLE_UNIT_TESTS AND NOT TARGET cxx_function)
   add_subdirectory(cxx_function)
 endif()
 
+if(CONTINUABLE_UNIT_TESTS AND NOT TARGET asio)
+  add_subdirectory(asio)
+endif()
+
 if(NOT TARGET function2)
   add_subdirectory(function2)
 endif()

dep/asio/CMakeLists.txt

@@ -0,0 +1,29 @@
+add_library(asio STATIC
+  ${CMAKE_CURRENT_LIST_DIR}/asio/asio/src/asio.cpp)
+
+target_include_directories(asio
+    PUBLIC
+      ${CMAKE_CURRENT_LIST_DIR}/asio/asio/include)
+
+target_compile_definitions(asio
+  PUBLIC
+    -DASIO_STANDALONE=1
+    -DASIO_SEPARATE_COMPILATION=1
+    -DASIO_NO_TYPEID=1)
+
+if(WIN32)
+target_compile_definitions(asio
+  PUBLIC
+    -D_WIN32_WINNT=0x0501)
+endif()
+
+target_compile_features(asio
+  PUBLIC
+    cxx_alias_templates
+    cxx_auto_type
+    cxx_decltype
+    cxx_final
+    cxx_lambdas
+    cxx_variadic_templates
+    cxx_defaulted_functions
+    cxx_nullptr)

dep/asio/asio

@@ -0,0 +1 @@
+Subproject commit 230c0d2ae035c5ce1292233fcab03cea0d341264

examples/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(asio-banking)

examples/asio-banking/CMakeLists.txt

@@ -0,0 +1,11 @@
+add_executable(example-asio-banking
+    ${CMAKE_CURRENT_LIST_DIR}/example-asio-banking.cpp)
+
+target_include_directories(example-asio-banking
+  PRIVATE
+    ${CMAKE_CURRENT_LIST_DIR})
+
+target_link_libraries(example-asio-banking
+  PRIVATE
+    asio
+    continuable)

examples/asio-banking/example-asio-banking.cpp

@@ -0,0 +1,37 @@
+
+/*
+
+                        /~` _  _ _|_. _     _ |_ | _
+                        \_,(_)| | | || ||_|(_||_)|(/_
+
+                    https://github.com/Naios/continuable
+                                   v2.0.0
+
+  Copyright(c) 2015 - 2017 Denis Blank <denis.blank at outlook dot com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files(the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions :
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+**/
+
+#include <asio/io_service.hpp>
+#include <continuable/continuable.hpp>
+
+int main(int, char**) {
+
+  return 0;
+}