From fb9f24eaee4c57d09ec0dca32abff840b39f7c7e Mon Sep 17 00:00:00 2001
From: Gil <mcg@google.com>
Date: Fri, 13 Jul 2018 11:09:44 -0700
Subject: Convert googletest and nanopb CMake builds to add_subdirectory
 (#1522)

* Add a download-only boringssl ExternalProject

Match boringssl version to grpc submodule version

Note: not yet in use

* Split grpc into separate download and build tasks

This allows other external targets to download into the gRPC source tree
before grpc is actually built.

* Convert grpc to an http download

* Build googletest with add_subdirectory

Also:
  * Revert library-name modifications in the abseil-cpp build
  * Move abseil-cpp add_subdirectory build into place

* Build nanopb with add_subdirectory

* Force nanopb first to work around ODR violations

This is a temporary work-around for b/111328563.
---
 Firestore/CMakeLists.txt | 43 ++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 38 insertions(+), 5 deletions(-)

(limited to 'Firestore/CMakeLists.txt')

diff --git a/Firestore/CMakeLists.txt b/Firestore/CMakeLists.txt
index eb9744b..cbcd49d 100644
--- a/Firestore/CMakeLists.txt
+++ b/Firestore/CMakeLists.txt
@@ -42,16 +42,49 @@ if(APPLE)
   find_package(FirebaseCore REQUIRED)
   find_package(GoogleUtilities REQUIRED)
 endif()
-find_package(GMock REQUIRED)
 find_package(GRPC REQUIRED)
-find_package(GTest REQUIRED)
 find_package(LevelDB REQUIRED)
-find_package(Nanopb REQUIRED)
 find_package(Protobuf REQUIRED)
 
-enable_testing()
-add_subdirectory(third_party/abseil-cpp)
 
+# Googletest
+add_subdirectory(
+  ${FIREBASE_BINARY_DIR}/src/googletest
+  ${FIREBASE_BINARY_DIR}/src/googletest-build
+  EXCLUDE_FROM_ALL
+)
+add_alias(GTest::GTest gtest)
+add_alias(GTest::Main gtest_main)
+add_alias(GMock::GMock gmock)
+
+
+# Abseil-cpp
+add_subdirectory(
+  third_party/abseil-cpp
+)
+
+
+# nanopb
+set(nanopb_BUILD_GENERATOR ON CACHE BOOL "Enable the nanopb generator")
+set(nanopb_PROTOC_PATH ${NANOPB_PROTOC_BIN} CACHE STRING "Protoc location")
+add_subdirectory(
+  ${FIREBASE_BINARY_DIR}/src/nanopb
+  ${FIREBASE_BINARY_DIR}/src/nanopb-build
+  EXCLUDE_FROM_ALL
+)
+
+target_compile_definitions(
+  protobuf-nanopb
+  PUBLIC -DPB_FIELD_16BIT
+)
+
+target_include_directories(
+  protobuf-nanopb
+  INTERFACE $<BUILD_INTERFACE:${FIREBASE_BINARY_DIR}/src/nanopb>
+)
+
+
+enable_testing()
 include(CompilerSetup)
 
 # Superbuild installed results
-- 
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