From ce9ad11547dffc327e0aaaf6dcd501feafe33bc9 Mon Sep 17 00:00:00 2001
From: Jonas Vautherin <jonas.vautherin@gmail.com>
Date: Tue, 9 Jul 2019 18:22:31 +0200
Subject: [PATCH] do not build CODEGEN or protobuf binaries when
 cross-compiling, as it is useless and may fail

---
 third_party/grpc/CMakeLists.txt     | 6 ++++++
 third_party/protobuf/CMakeLists.txt | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/third_party/grpc/CMakeLists.txt b/third_party/grpc/CMakeLists.txt
index 1e8f274ded..66bb1e73df 100644
--- a/third_party/grpc/CMakeLists.txt
+++ b/third_party/grpc/CMakeLists.txt
@@ -23,6 +23,12 @@ list(APPEND CMAKE_ARGS
     "-DgRPC_BUILD_CSHARP_EXT=OFF"
     )
 
+if(CMAKE_CROSSCOMPILING)
+    list(APPEND CMAKE_ARGS
+        "-DgRPC_BUILD_CODEGEN=OFF"
+        )
+endif()
+
 if(ANDROID)
     list(APPEND CMAKE_ARGS
         "-DANDROID_ABI:STRING=${ANDROID_ABI}"
diff --git a/third_party/protobuf/CMakeLists.txt b/third_party/protobuf/CMakeLists.txt
index 2f59901690..eac5231b0c 100644
--- a/third_party/protobuf/CMakeLists.txt
+++ b/third_party/protobuf/CMakeLists.txt
@@ -13,6 +13,12 @@ list(APPEND CMAKE_ARGS
     "-DCMAKE_POSITION_INDEPENDENT_CODE=ON"
     )
 
+if(CMAKE_CROSSCOMPILING)
+    list(APPEND CMAKE_ARGS
+        "-Dprotobuf_BUILD_PROTOC_BINARIES=OFF"
+        )
+endif()
+
 if(ANDROID)
     list(APPEND CMAKE_ARGS
         "-DANDROID_ABI:STRING=${ANDROID_ABI}"