NOISSUE bulk addition of code from Katabasis

libraries/katabasis/CMakeLists.txt

@@ -0,0 +1,60 @@
+cmake_minimum_required(VERSION 3.20)
+
+string(COMPARE EQUAL "${CMAKE_SOURCE_DIR}" "${CMAKE_BUILD_DIR}" IS_IN_SOURCE_BUILD)
+if(IS_IN_SOURCE_BUILD)
+    message(FATAL_ERROR "You are building Katabasis in-source. Please separate the build tree from the source tree.")
+endif()
+
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    if(CMAKE_HOST_SYSTEM_VERSION MATCHES ".*[Mm]icrosoft.*" OR
+        CMAKE_HOST_SYSTEM_VERSION MATCHES ".*WSL.*"
+    )
+        message(FATAL_ERROR "Building Katabasis is not supported in Linux-on-Windows distributions. Use a real Linux machine, not a fraudulent one.")
+    endif()
+endif()
+
+project(Katabasis)
+enable_testing()
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_CXX_STANDARD_REQUIRED true)
+set(CMAKE_C_STANDARD_REQUIRED true)
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_C_STANDARD 11)
+
+find_package(Qt5 COMPONENTS Core Network REQUIRED)
+
+set( katabasis_PRIVATE
+    src/OAuth2.cpp
+
+    src/JsonResponse.cpp
+    src/JsonResponse.h
+    src/PollServer.cpp
+    src/Reply.cpp
+    src/ReplyServer.cpp
+    src/Requestor.cpp
+)
+
+set( katabasis_PUBLIC
+    include/katabasis/OAuth2.h
+
+    include/katabasis/Globals.h
+    include/katabasis/PollServer.h
+    include/katabasis/Reply.h
+    include/katabasis/ReplyServer.h
+
+    include/katabasis/Requestor.h
+    include/katabasis/RequestParameter.h
+)
+
+add_library( Katabasis STATIC ${katabasis_PRIVATE} ${katabasis_PUBLIC} )
+target_link_libraries(Katabasis Qt5::Core Qt5::Network)
+
+# needed for statically linked Katabasis in shared libs on x86_64
+set_target_properties(Katabasis
+    PROPERTIES POSITION_INDEPENDENT_CODE TRUE
+)
+
+target_include_directories(Katabasis PUBLIC include PRIVATE src include/katabasis)