Add an external download for Firestore

PiperOrigin-RevId: 297709959

Author: wilhuff

cmake/external/CMakeLists.txt

@@ -1,4 +1,4 @@
-# Copyright 2018 Google
+# Copyright 2018 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@ project(Firebase-cpp-download C CXX)
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
 
 include(flatbuffers)
+include(firestore)
 
 
 # Some of the external dependencies are not needed for mobile.

cmake/external/firestore.cmake

@@ -0,0 +1,39 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+include(ExternalProject)
+
+if(TARGET firestore)
+  return()
+endif()
+
+# Pin to the first revision that including
+# https://github.com/firebase/firebase-ios-sdk/pull/4984, that contains all the
+# fixes required to operate as an external build from within this repo.
+set(version d4e86ba091b0aeccfcdcf9d344338564f45c21c1)
+
+ExternalProject_Add(
+  firestore
+
+  DOWNLOAD_DIR ${FIREBASE_DOWNLOAD_DIR}
+  DOWNLOAD_NAME firestore-${version}.tar.gz
+  URL https://github.com/firebase/firebase-ios-sdk/archive/${version}.tar.gz
+
+  PREFIX ${PROJECT_BINARY_DIR}
+
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND ""
+  INSTALL_COMMAND ""
+  TEST_COMMAND ""
+)

cmake/external_rules.cmake

@@ -37,6 +37,23 @@ function(download_external_sources)
     set(external_platform DESKTOP)
   endif()
 
+  # Prepare the Firestore CMake build as well.
+  if(FIREBASE_INCLUDE_FIRESTORE)
+    set(FIRESTORE_BINARY_DIR ${PROJECT_BINARY_DIR}/external/src/firestore-build)
+
+    execute_process(
+      COMMAND
+        ${ENV_COMMAND} cmake
+        -DFIREBASE_DOWNLOAD_DIR=${FIREBASE_DOWNLOAD_DIR}
+        -DCMAKE_INSTALL_PREFIX=${FIREBASE_INSTALL_DIR}
+        ${PROJECT_BINARY_DIR}/external/src/firestore
+
+      WORKING_DIRECTORY ${FIRESTORE_BINARY_DIR}
+    )
+
+    set(NANOPB_SRC_DIR ${FIRESTORE_BINARY_DIR}/external/src/nanopb)
+  endif()
+
   # Set variables to indicate if local versions of third party libraries should
   # be used instead of downloading them.
   function(check_use_local_directory NAME)