[xeus] Add new port (#5351)

* [xeus] Add new port

* [xeus] Update to 2019-02-04

* [xeus] Update cryptopp dependency

* [xeus] Update to 2019-02-13

* [xeus] Static building support

ports/xeus/CONTROL

@@ -0,0 +1,4 @@
+Source: xeus
+Version: 2019-02-13-1
+Description: C++ implementation of the Jupyter kernel protocol
+Build-Depends: cppzmq, cryptopp, libuuid (linux), nlohmann-json, xtl, zeromq

ports/xeus/portfile.cmake

@@ -0,0 +1,47 @@
+include(vcpkg_common_functions)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO QuantStack/xeus
+    REF f78c60c7ce28baecb2479f2b82e4e8d1a6c35188
+    SHA512 9d83f32f641bcad4ac96e263c465d46bdfa7d18d41f1e201309244c95587ce08ff2426f7cdd3a4399563d46064ed9bedd4d0babf4840f65e95c6a2c6f23ac9bb
+    HEAD_REF master
+    PATCHES
+        static-lib.patch
+)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+    OPTIONS
+        -DBUILD_EXAMPLES=OFF
+        -DBUILD_TESTS=OFF
+        -DDOWNLOAD_GTEST=OFF
+        -DXEUS_USE_SHARED_CRYPTOPP=OFF # `cryptopp` port currently only supports static linkage.
+        -DDISABLE_ARCH_NATIVE=OFF
+)
+
+vcpkg_install_cmake()
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake/${PORT})
+
+file(REMOVE_RECURSE
+    ${CURRENT_PACKAGES_DIR}/debug/include
+    ${CURRENT_PACKAGES_DIR}/debug/share
+)
+
+if(VCPKG_LIBRARY_LINKAGE STREQUAL static)
+    vcpkg_replace_string(${CURRENT_PACKAGES_DIR}/include/xeus/xeus.hpp
+        "#ifdef XEUS_STATIC_LIB"
+        "#if 1 // #ifdef XEUS_STATIC_LIB"
+    )
+endif()
+
+# Handle copyright
+configure_file(${SOURCE_PATH}/LICENSE ${CURRENT_PACKAGES_DIR}/share/${PORT}/copyright COPYONLY)
+
+# Install usage
+file(COPY ${CMAKE_CURRENT_LIST_DIR}/usage DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT})
+
+# CMake integration test
+#vcpkg_test_cmake(PACKAGE_NAME ${PORT})

ports/xeus/static-lib.patch

@@ -0,0 +1,63 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 26118eb..ccda00b 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -141,7 +141,12 @@ set(XEUS_SOURCES
+ # Output
+ # ======
+ 
+-add_library(xeus SHARED ${XEUS_SOURCES} ${XEUS_HEADERS})
++option(BUILD_SHARED_LIBS "Build shared instead of static libraries." ON)
++if (BUILD_SHARED_LIBS)
++    add_library(xeus SHARED ${XEUS_SOURCES} ${XEUS_HEADERS})
++else ()
++    add_library(xeus STATIC ${XEUS_SOURCES} ${XEUS_HEADERS})
++endif ()
+ 
+ if (APPLE)
+     set_target_properties(xeus PROPERTIES
+@@ -166,9 +171,9 @@ target_link_libraries(xeus
+ 
+ OPTION(XEUS_USE_SHARED_CRYPTOPP "Used shared library for cryptopp" OFF)
+ if (XEUS_USE_SHARED_CRYPTOPP)
+-    target_link_libraries(xeus PRIVATE cryptopp-shared)
++    target_link_libraries(xeus PUBLIC cryptopp-shared)
+ else ()
+-    target_link_libraries(xeus PRIVATE cryptopp-static)
++    target_link_libraries(xeus PUBLIC cryptopp-static)
+ endif ()
+ 
+ if(NOT MSVC)
+@@ -226,6 +231,10 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU"
+     message(STATUS "CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
+ endif()
+ 
++if (NOT BUILD_SHARED_LIBS)
++    target_compile_definitions(xeus PUBLIC XEUS_STATIC_LIB)
++endif ()
++
+ if(MSVC)
+     target_compile_definitions(xeus PUBLIC -DNOMINMAX)
+     target_compile_options(xeus PUBLIC /DGUID_WINDOWS /MP /bigobj)
+diff --git a/include/xeus/xeus.hpp b/include/xeus/xeus.hpp
+index 99e1d79..522bb78 100644
+--- a/include/xeus/xeus.hpp
++++ b/include/xeus/xeus.hpp
+@@ -10,10 +10,14 @@
+ #define XEUS_EXPORT_HPP
+ 
+ #ifdef _WIN32
+-    #ifdef XEUS_EXPORTS
+-        #define XEUS_API __declspec(dllexport)
++    #ifdef XEUS_STATIC_LIB
++        #define XEUS_API
+     #else
+-        #define XEUS_API __declspec(dllimport)
++        #ifdef XEUS_EXPORTS
++            #define XEUS_API __declspec(dllexport)
++        #else
++            #define XEUS_API __declspec(dllimport)
++        #endif
+     #endif
+ #else
+     #define XEUS_API

ports/xeus/usage

@@ -0,0 +1,4 @@
+The package xeus provides CMake targets:
+
+    find_package(xeus CONFIG REQUIRED)
+    target_link_libraries(main PRIVATE xeus)