add better check if protobuf is found

Project-OSRM · Nov 17, 2014 · 6f155f1 · 6f155f1
1 parent 3c958fe
commit 6f155f1
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -12,6 +12,10 @@ include(CheckCXXCompilerFlag)
 include(FindPackageHandleStandardArgs)
 
 find_package(Protobuf REQUIRED)
+if(PROTOBUF_PROTOC_EXECUTABLE STREQUAL "PROTOBUF_PROTOC_EXECUTABLE-NOTFOUND")
+  message(SEND_ERROR "protoc executable not found! Missing protobuf-compiler package?")
+endif()
+
 include_directories(${PROTOBUF_INCLUDE_DIRS})
 file(GLOB ProtoFiles "${CMAKE_CURRENT_SOURCE_DIR}/Descriptors/*.proto")
 PROTOBUF_GENERATE_CPP(ProtoSources ProtoHeaders ${ProtoFiles})