From 22d06a02dbf9cbdcf13346ff01dd2fcd814770e1 Mon Sep 17 00:00:00 2001
From: Henry Winkel <winkelh@hsu-hh.de>
Date: Sat, 22 Oct 2022 15:12:29 +0200
Subject: [PATCH] ADD: added protbuf libs dependencies in CMakeLists.txt

---
 CMakeLists.txt               |  9 +++++++++
 cmake/Modules/protobuf.cmake | 37 ++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 cmake/Modules/protobuf.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ad0ef48..a182c33 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,6 +24,13 @@ IF(NOT TARGET cppzmq)
   add_subdirectory(libs/cppzmq EXCLUDE_FROM_ALL)
 ENDIF()
 
+set(protobuf_BUILD_TESTS OFF CACHE INTERNAL "")
+set(protobuf_BUILD_EXAMPLES OFF CACHE INTERNAL "")
+add_subdirectory(libs/protobuf EXCLUDE_FROM_ALL)
+include(protobuf)
+
+protobuf_generate_cpp(PROTO_PATH tests/protos CPP_PATH tests/protos/src HPP_PATH tests/protos/include)
+
 
 add_library(whisper-com STATIC
   include/WHISPER/whisper.hpp
@@ -37,6 +44,8 @@ target_link_libraries(whisper-com
   libzmq
 )
 
+add_dependencies(whisper-com protoc)
+
 target_include_directories(whisper-com PUBLIC
   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   $<INSTALL_INTERFACE:include>
diff --git a/cmake/Modules/protobuf.cmake b/cmake/Modules/protobuf.cmake
new file mode 100644
index 0000000..c86a567
--- /dev/null
+++ b/cmake/Modules/protobuf.cmake
@@ -0,0 +1,37 @@
+
+
+
+function(protobuf_generate_cpp)
+  set(OPTIONS)
+  set(SINGLE_VALUE_KEYWORDS
+      PROTO_PATH
+      CPP_PATH
+      HPP_PATH
+      )
+  set(MULTI_VALUE_KEYWORDS)
+  cmake_parse_arguments(protobuf
+                        "${OPTIONS}"
+                        "${SINGLE_VALUE_KEYWORDS}"
+                        "${MULTI_VALUE_KEYWORDS}"
+                        ${ARGN})
+
+    FILE(GLOB PROTO_FILES ${protobuf_PROTO_PATH}/*.proto)
+    set(PROTOC ${CMAKE_BINARY_DIR}/libs/protobuf/protoc)
+    # set(PROTOC protoc)
+
+   FOREACH(proto ${PROTO_FILES})
+     FILE(TO_NATIVE_PATH ${proto} proto_native)
+     get_filename_component(protoFILENAME ${proto} NAME_WLE )
+     get_filename_component(protoDIR ${proto} DIRECTORY)
+
+
+     add_custom_command(
+         OUTPUT "${protoDIR}/${protoFILENAME}.pb.cc"
+         DEPENDS "${protoDIR}/${protoFILENAME}.proto"
+         COMMAND ${PROTOC} --cpp_out=${protoDIR} --proto_path=${protoDIR} --proto_path="${CMAKE_SOURCE_DIR}/libs/protobuf/src" "${protoDIR}/${protoFILENAME}.proto"
+     )
+    
+  ENDFOREACH(proto)
+
+  
+endfunction()