From b290d3bde51ec87ca87dc0046f242d3c2c961973 Mon Sep 17 00:00:00 2001
From: Anton Danielsson <anton.danielsson@dirac.com>
Date: Sat, 20 Feb 2021 21:45:37 +0100
Subject: [PATCH] Find protoc before Conan setup

If protoc has been built by both host and build profile this
makes sure CMake finds protoc for the build profile

See discussion in:
https://github.com/conan-io/conan-center-index/pull/4556
---
 CMakeLists.txt              |  4 ++++
 test_package/CMakeLists.txt | 17 +++++++++--------
 2 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1848ca5..307af7d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,10 @@
 cmake_minimum_required(VERSION 2.8.12)
 project(cmake_wrapper)
 
+# Need to find protoc before conan setup to make sure we get the correct
+# one when cross compiling.
+find_program(_gRPC_PROTOBUF_PROTOC_EXECUTABLE protoc)
+
 include(conanbuildinfo.cmake)
 conan_basic_setup()
 
diff --git a/test_package/CMakeLists.txt b/test_package/CMakeLists.txt
index 07a38ea..8f5d5d3 100644
--- a/test_package/CMakeLists.txt
+++ b/test_package/CMakeLists.txt
@@ -1,6 +1,15 @@
 cmake_minimum_required(VERSION 3.1)
 project(test_package)
 
+# Need to find protoc before conan setup to make sure we get the correct
+# one when cross compiling.
+find_program(_PROTOBUF_PROTOC protoc REQUIRED)
+message("_PROTOBUF_PROTOC ${_PROTOBUF_PROTOC}")
+
+if(NOT _PROTOBUF_PROTOC)
+    message(FATAL_ERROR "${_PROTOBUF_PROTOC} but required!")
+endif()
+
 include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
 conan_basic_setup()
 
@@ -17,14 +26,6 @@ message(STATUS "Using protobuf ${protobuf_VERSION}")
 
 set(_PROTOBUF_LIBPROTOBUF protobuf::libprotobuf)
 
-# Find protoc
-find_program(_PROTOBUF_PROTOC protoc REQUIRED)
-message("_PROTOBUF_PROTOC ${_PROTOBUF_PROTOC}")
-
-if(NOT _PROTOBUF_PROTOC)
-    message(FATAL_ERROR "${_PROTOBUF_PROTOC} but required!")
-endif()
-
 # Find gRPC installation
 find_package(gRPC CONFIG REQUIRED)
 message(STATUS "Using gRPC ${gRPC_VERSION}")