From cc6dbabea0e452ebc93682df860a79ed9a45722e Mon Sep 17 00:00:00 2001
From: Alexey Firago <alexey_firago@mentor.com>
Date: Fri, 20 Oct 2017 00:04:19 +0300
Subject: [PATCH] CMakeLists.txt: Fix grpc_cpp_plugin path during
 cross-compilation

Signed-off-by: Alexey Firago <alexey_firago@mentor.com>
---
 CMakeLists.txt                    | 9 ++++++++-
 templates/CMakeLists.txt.template | 9 ++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f9cd630..9663934 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -328,6 +328,13 @@ function(protobuf_generate_grpc_cpp)
     return()
   endif()

+  #if cross-compiling, find host plugin
+  if(CMAKE_CROSSCOMPILING)
+      find_program(gRPC_CPP_PLUGIN grpc_cpp_plugin)
+  else()
+      set(gRPC_CPP_PLUGIN $<TARGET_FILE:grpc_cpp_plugin>)
+  endif()
+
   set(_protobuf_include_path -I . -I ${PROTOBUF_WELLKNOWN_IMPORT_DIR})
   foreach(FIL ${ARGN})
     get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
@@ -345,7 +352,7 @@ function(protobuf_generate_grpc_cpp)
       COMMAND ${_gRPC_PROTOBUF_PROTOC_EXECUTABLE}
       ARGS --grpc_out=generate_mock_code=true:${_gRPC_PROTO_GENS_DIR}
            --cpp_out=${_gRPC_PROTO_GENS_DIR}
-           --plugin=protoc-gen-grpc=$<TARGET_FILE:grpc_cpp_plugin>
+           --plugin=protoc-gen-grpc=${gRPC_CPP_PLUGIN}
            ${_protobuf_include_path}
            ${REL_FIL}
       DEPENDS ${ABS_FIL} ${_gRPC_PROTOBUF_PROTOC} grpc_cpp_plugin
diff --git a/templates/CMakeLists.txt.template b/templates/CMakeLists.txt.template
index 64daf04..a7e8629 100644
--- a/templates/CMakeLists.txt.template
+++ b/templates/CMakeLists.txt.template
@@ -373,6 +373,13 @@
       return()
     endif()

+    #if cross-compiling, find host plugin
+    if(CMAKE_CROSSCOMPILING)
+        find_program(gRPC_CPP_PLUGIN grpc_cpp_plugin)
+    else()
+        set(gRPC_CPP_PLUGIN $<TARGET_FILE:grpc_cpp_plugin>)
+    endif()
+
     set(_protobuf_include_path -I . -I <%text>${PROTOBUF_WELLKNOWN_IMPORT_DIR}</%text>)
     foreach(FIL <%text>${ARGN}</%text>)
       get_filename_component(ABS_FIL <%text>${FIL}</%text> ABSOLUTE)
@@ -390,7 +397,7 @@
         COMMAND <%text>${_gRPC_PROTOBUF_PROTOC_EXECUTABLE}</%text>
         ARGS --grpc_out=<%text>generate_mock_code=true:${_gRPC_PROTO_GENS_DIR}</%text>
              --cpp_out=<%text>${_gRPC_PROTO_GENS_DIR}</%text>
-             --plugin=protoc-gen-grpc=$<TARGET_FILE:grpc_cpp_plugin>
+             --plugin=protoc-gen-grpc=${gRPC_CPP_PLUGIN}
              <%text>${_protobuf_include_path}</%text>
              <%text>${REL_FIL}</%text>
         DEPENDS <%text>${ABS_FIL}</%text> <%text>${_gRPC_PROTOBUF_PROTOC}</%text> grpc_cpp_plugin
--
2.7.4