Generate pkgconfig file

CMakeLists.txt

@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.12)
 
-project(protobuf_comm VERSION 0.9.0)
+project(protobuf_comm VERSION 0.9.0
+  DESCRIPTION "Protobuf wrapper for peer-to-peer communication")
 
 find_package(Protobuf REQUIRED)
 find_package(Boost REQUIRED COMPONENTS thread system)
@@ -44,3 +45,19 @@ install(
 install(FILES cmake/ProtobufCommConfig.cmake
               ${CMAKE_CURRENT_BINARY_DIR}/ProtobufCommConfigVersion.cmake
         DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/ProtobufComm)
+
+set(PKG_CONFIG_REQUIRES "protobuf libcrypto")
+get_target_property(PKG_CONFIG_PUBLIC_LIBS protobuf_comm INTERFACE_LINK_LIBRARIES)
+get_target_property(PKG_CONFIG_PRIVATE_LIBS protobuf_comm LINK_LIBRARIES)
+get_target_property(PKG_CONFIG_CFLAGS protobuf_comm COMPILE_FLAGS)
+if ("${PKG_CONFIG_CFLAGS}" STREQUAL "PKG_CONFIG_CFLAGS-NOTFOUND")
+  set(PKG_CONFIG_CFLAGS "")
+endif()
+
+set(PKG_CONFIG_PUBLIC_LIBS "-lcrypto -lprotobuf -lboost_thread -lboost_system")
+set(PKG_CONFIG_PRIVATE_LIBS "")
+set(PKG_CONFIG_CFLAGS "")
+
+configure_file(protobuf_comm.pc.in ${CMAKE_CURRENT_BINARY_DIR}/protobuf_comm.pc @ONLY)
+
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/protobuf_comm.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)

protobuf_comm.pc.in

@@ -0,0 +1,7 @@
+Name: @PROJECT_NAME@
+Description: @PROJECT_DESCRIPTION@
+Version: @PROJECT_VERSION@
+Requires: @PKG_CONFIG_REQUIRES@
+Cflags: @PKG_CONFIG_CFLAGS@
+Libs: -lprotobuf_comm @PKG_CONFIG_PUBLIC_LIBS@
+Libs.private: @PKG_CONFIG_PRIVATE_LIBS@