From 2e8a50cd4975df3ab60ee07c9675831cd5ad397f Mon Sep 17 00:00:00 2001
From: Francis Laniel <flaniel@linux.microsoft.com>
Date: Tue, 12 Apr 2022 19:54:11 +0100
Subject: [PATCH] cmake: Permit setting GRPC_CPP_PLUGIN.

This patch enables users to set GRPC_CPP_PLUGIN while calling cmake with:
cmake -DGRPC_CPP_PLUGIN=/path

Signed-off-by: Francis Laniel <flaniel@linux.microsoft.com>
---
 cmake/modules/grpc.cmake | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cmake/modules/grpc.cmake b/cmake/modules/grpc.cmake
index e5fd16b8..9d8f5934 100644
--- a/cmake/modules/grpc.cmake
+++ b/cmake/modules/grpc.cmake
@@ -12,9 +12,11 @@ elseif(NOT USE_BUNDLED_GRPC)
 		set(GRPCPP_LIB gRPC::grpc++)
 
 		# gRPC C++ plugin
-		get_target_property(GRPC_CPP_PLUGIN gRPC::grpc_cpp_plugin LOCATION)
 		if(NOT GRPC_CPP_PLUGIN)
-			message(FATAL_ERROR "System grpc_cpp_plugin not found")
+			get_target_property(GRPC_CPP_PLUGIN gRPC::grpc_cpp_plugin LOCATION)
+			if(NOT GRPC_CPP_PLUGIN)
+				message(FATAL_ERROR "System grpc_cpp_plugin not found")
+			endif()
 		endif()
 
 		# gRPC include dir + properly handle grpc{++,pp}
-- 
2.25.1