[hnswlib] backport CMake targets (#31305)

* [hnswlib] backport CMake targets

* download cmake changes as patch

* add patch file

ports/hnswlib/cmake.patch

@@ -0,0 +1,44 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 7cebe60..b2aecc8 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,11 +1,36 @@
+-cmake_minimum_required (VERSION 2.6)
+-project(hnsw_lib
++cmake_minimum_required(VERSION 3.0...3.26)
++
++project(hnswlib
+     LANGUAGES CXX)
+ 
++include(GNUInstallDirs)
++
+ add_library(hnswlib INTERFACE)
+-target_include_directories(hnswlib INTERFACE .) 
++add_library(hnswlib::hnswlib ALIAS hnswlib)
++
++target_include_directories(hnswlib INTERFACE
++    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
++    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
++
++# Install
++install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/hnswlib
++    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+ 
++install(TARGETS hnswlib
++    EXPORT hnswlibTargets)
++
++install(EXPORT hnswlibTargets
++    FILE hnswlibConfig.cmake
++    NAMESPACE hnswlib::
++    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/hnswlib)
++
++# Examples and tests
+ if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
++    option(HNSWLIB_EXAMPLES "Build examples and tests." ON)
++else()
++    option(HNSWLIB_EXAMPLES "Build examples and tests." OFF)
++endif()
++if(HNSWLIB_EXAMPLES)
+     set(CMAKE_CXX_STANDARD 11)
+ 
+     if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")

ports/hnswlib/portfile.cmake

@@ -1,12 +1,24 @@
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO nmslib/hnswlib
-    REF 359b2ba87358224963986f709e593d799064ace6 # v0.7.0
+    REF "v${VERSION}"
-    SHA512 59a0c02bbe8f7389a2ecad9188a76eb3847b719a213d306093753c04e4eeb11d95e8e310aa03888364be475a2f2e6e7976bd81117517eef81eff2983379ac743
+    SHA512 fd74c23040598973d7e0b5a6af73eb884ee2d30703187d1702fdd48eaf8f7f96d8fbb125d3763f90111d9fb7c5ab3434ebdb818da8717d35c5571e99083c812b
     HEAD_REF master
+    PATCHES
+        cmake.patch # Backport CMake targets from nmslib/hnswlib #446 to 0.7.0 release.
 )
 
-file(COPY "${SOURCE_PATH}/hnswlib" DESTINATION "${CURRENT_PACKAGES_DIR}/include")
+set(VCPKG_BUILD_TYPE "release") # header-only port
+
+vcpkg_cmake_configure(
+    SOURCE_PATH "${SOURCE_PATH}"
+    OPTIONS
+        -DHNSWLIB_EXAMPLES=OFF
+)
+
+vcpkg_cmake_install()
+vcpkg_cmake_config_fixup(CONFIG_PATH lib/cmake/hnswlib)
+
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/lib")
 
-file(INSTALL "${CMAKE_CURRENT_LIST_DIR}/usage" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
 vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE")

ports/hnswlib/usage

@@ -1,4 +0,0 @@
-hnswlib is header-only and can be used from CMake via:
-
-    find_path(HNSWLIB_INCLUDE_DIRS "hnswlib/hnswlib.h")
-    target_include_directories(main PRIVATE ${HNSWLIB_INCLUDE_DIRS})

ports/hnswlib/vcpkg.json

@@ -1,7 +1,18 @@
 {
   "name": "hnswlib",
   "version": "0.7.0",
+  "port-version": 1,
   "description": "Header-only library for fast approximate nearest neighbors",
   "homepage": "https://github.com/nmslib/hnswlib",
-  "license": "Apache-2.0"
+  "license": "Apache-2.0",
+  "dependencies": [
+    {
+      "name": "vcpkg-cmake",
+      "host": true
+    },
+    {
+      "name": "vcpkg-cmake-config",
+      "host": true
+    }
+  ]
 }

versions/baseline.json

@@ -3130,7 +3130,7 @@
     },
     "hnswlib": {
       "baseline": "0.7.0",
-      "port-version": 0
+      "port-version": 1
     },
     "hps": {
       "baseline": "2022-01-18",

versions/h-/hnswlib.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "497030f03d37d63ff86c9e99d24d9e8f048ea067",
+      "version": "0.7.0",
+      "port-version": 1
+    },
     {
       "git-tree": "7053d263445d46410589894d921fa6c85fbf107c",
       "version": "0.7.0",