From 2cfd69929539cb8642446e187d735ff833fface7 Mon Sep 17 00:00:00 2001
From: Martin Dobias <wonder.sk@gmail.com>
Date: Tue, 31 Mar 2020 09:11:44 +0200
Subject: [PATCH] Make sure that "protoc" tool is available

It may be in a separate package, e.g. on Ubuntu there is protobuf-compiler
---
 CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2a17a6503f1d..2c76dd89c3f5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -333,6 +333,9 @@ IF(WITH_CORE)
 
   FIND_PACKAGE(Protobuf REQUIRED)   # for decoding of vector tiles in MVT format
   MESSAGE(STATUS "Found Protobuf: ${Protobuf_LIBRARIES}")
+  IF (NOT Protobuf_PROTOC_EXECUTABLE)
+    MESSAGE (SEND_ERROR "Protobuf library's 'protoc' tool was not found!")
+  ENDIF ()
   FIND_PACKAGE(ZLIB REQUIRED)       # for decompression of vector tiles in MBTiles file
   MESSAGE(STATUS "Found zlib: ${ZLIB_LIBRARIES}")