[caf] Initial commit of 0.15.6

ports/caf/CONTROL

@@ -0,0 +1,4 @@
+Source: caf
+Version: 0.15.6
+Build-Depends: openssl
+Description: an open source C++11 actor model implementation featuring lightweight & fast actor implementations, pattern matching for messages, network transparent messaging, and more.

ports/caf/openssl-version-override.patch

@@ -0,0 +1,14 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index a7b75f7..794af1d 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -545,6 +545,9 @@ if(NOT CAF_NO_OPENSSL)
+       message(STATUS
+               "Disable OpenSSL. Required >= 1.0.1 due to TLSv1.2 support.")
+       set(CAF_NO_OPENSSL yes)
++    elseif(CAF_OPENSSL_VERSION_OVERRIDE)
++      include_directories(BEFORE ${OPENSSL_INCLUDE_DIR})
++      add_optional_caf_lib(openssl)
+     else()
+       # Check if openssl headers and library versions match
+       set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES})

ports/caf/portfile.cmake

@@ -0,0 +1,48 @@
+include(vcpkg_common_functions)
+
+if(VCPKG_LIBRARY_LINKAGE STREQUAL "dynamic")
+    set(VCPKG_LIBRARY_LINKAGE "static")
+    message("CAF only supports static library linkage")
+endif()
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO actor-framework/actor-framework
+    REF 0.15.6
+    SHA512 180ef1149fcbbe4532452cbe4509c177ecc3ae3971453505f6600b715be38b3c891ae7f83b8d368fcb20af037e4d6e94f7f750f477bd499d48316fe33fca511e
+    HEAD_REF master
+)
+
+vcpkg_apply_patches(
+    SOURCE_PATH ${SOURCE_PATH}
+    PATCHES ${CMAKE_CURRENT_LIST_DIR}/openssl-version-override.patch
+)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+    OPTIONS
+        -DCMAKE_DISABLE_FIND_PACKAGE_Doxygen=ON
+        -DCAF_BUILD_STATIC=ON
+        -DCAF_BUILD_STATIC_ONLY=ON
+        -DCAF_NO_TOOLS=ON
+        -DCAF_NO_EXAMPLES=ON
+        -DCAF_NO_BENCHMARKS=ON
+        -DCAF_NO_UNIT_TESTS=ON
+        -DCAF_NO_PROTOBUF_EXAMPLES=ON
+        -DCAF_NO_QT_EXAMPLES=ON
+        -DCAF_NO_OPENCL=ON
+        -DCAF_NO_OPENSSL=OFF
+        -DCAF_NO_CURL_EXAMPLES=ON
+        -DCAF_OPENSSL_VERSION_OVERRIDE=ON
+)
+
+vcpkg_install_cmake()
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include ${CURRENT_PACKAGES_DIR}/debug/share)
+
+file(INSTALL
+    ${SOURCE_PATH}/LICENSE
+    DESTINATION ${CURRENT_PACKAGES_DIR}/share/caf RENAME copyright)
+
+vcpkg_copy_pdbs()