[gloo] New Port (#15219)

ports/gloo/portfile.cmake

@@ -0,0 +1,32 @@
+vcpkg_from_github(
+  OUT_SOURCE_PATH SOURCE_PATH
+  REPO facebookincubator/gloo
+  REF 1da21174054eaabbbd189b7f657ea24842d821e2
+  SHA512 ebd8369e413aee739a3928f8e6738c15708f009e0cd5a3763b8cadbe6f6d0a9d758585a7a2b0f7dd6d39a12882ff2f9497ab2d4edcebd4eb2a7237ab857f317e
+  HEAD_REF master
+  )
+
+# Determine which backend to build via specified feature
+vcpkg_check_features(
+  OUT_FEATURE_OPTIONS GLOO_FEATURE_OPTIONS
+  FEATURES
+  mpi USE_MPI
+  redis USE_REDIS
+  )
+
+if ("cuda" IN_LIST FEATURES)
+  list(APPEND GLOO_FEATURE_OPTIONS "-DUSE_CUDA=1" "-DUSE_NCCL=1")
+endif()
+
+vcpkg_configure_cmake(
+  SOURCE_PATH ${SOURCE_PATH}
+  PREFER_NINJA
+  OPTIONS ${GLOO_FEATURE_OPTIONS}
+  )
+vcpkg_install_cmake()
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH share/cmake/Gloo)
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/share")
+
+file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT} RENAME copyright)

ports/gloo/vcpkg.json

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+{
+  "name": "gloo",
+  "version-string": "20201203",
+  "description": "Collective communications library with various primitives for multi-machine training.",
+  "homepage": "https://github.com/facebookincubator/gloo",
+  "supports": "x64 & linux",
+  "features": {
+    "cuda": {
+      "description": "for CUDA aware algorithms",
+      "dependencies": [
+        "cuda",
+        "nccl"
+      ]
+    },
+    "mpi": {
+      "description": "for coordinating machine rendezvous through MPI",
+      "dependencies": [
+        "openmpi"
+      ]
+    },
+    "redis": {
+      "description": "for coordinating machine rendezvous through Redis",
+      "dependencies": [
+        "hiredis"
+      ]
+    }
+  }
+}