| if(NOT trout_PROTOBUF_ROOT_DIR) | |
| set(trout_PROTOBUF_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/protobuf) | |
| endif() | |
| if(EXISTS "${trout_PROTOBUF_ROOT_DIR}/cmake/CMakeLists.txt") | |
| set(_trout_PROTOBUF_WELLKNOWN_INCLUDE_DIR "${trout_PROTOBUF_ROOT_DIR}/src") | |
| else() | |
| message(FATAL_ERROR "${trout_PROTOBUF_ROOT_DIR}/cmake/CMakeLists.txt not found") | |
| endif() | |