Cleaned up the protobuf and mapexport build scripts a lot, and added two more simple proto files to store map geometry information.

library/depends/protobuf/CMakeLists.txt

@@ -1,3 +1,6 @@
+PROJECT(protobuf)
+
+#Protocol buffers use C++0x hash maps, so we need to look for those. This is a rewrite of stl_hash.m4 in CMake.
 IF(CMAKE_COMPILER_IS_GNUCC)
     EXECUTE_PROCESS(COMMAND ${CMAKE_C_COMPILER} -dumpversion
     OUTPUT_VARIABLE GCC_VERSION)
@@ -5,6 +8,7 @@ IF(CMAKE_COMPILER_IS_GNUCC)
     LIST(GET GCC_VERSION_COMPONENTS 0 GCC_MAJOR)
     LIST(GET GCC_VERSION_COMPONENTS 1 GCC_MINOR)
     IF(GCC_MAJOR LESS 4 OR (GCC_MAJOR EQUAL 4 AND GCC_MINOR LESS 2))
+        #GCC is too old
         SET(STL_HASH_OLD_GCC 1)
     ENDIF()
 
@@ -12,6 +16,8 @@ IF(CMAKE_COMPILER_IS_GNUCC)
     SET(HAVE_HASH_MAP 0)
     SET(HASH_MAP_CLASS unordered_map)
 
+    #Check for all of the possible combinations of unordered_map and hash_map
+
     FOREACH(header tr1/unordered_map unordered_map)
         FOREACH(namespace std::tr1 std )
             IF(HAVE_HASH_MAP EQUAL 0 AND NOT STL_HASH_OLD_GCC)
@@ -193,9 +199,7 @@ google/protobuf/compiler/zip_writer.cc
 LIST(APPEND LIBPROTOBUF_FULL_SRCS ${LIBPROTOBUF_LITE_SRCS})
 
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
-IF (CMAKE_COMPILER_IS_GNUCC AND ${HASH_NAMESPACE} MATCHES ".*tr1.*")
-    SET(CMAKE_CXX_FLAGS "-std=gnu++98")
-ENDIF()
+
 ADD_LIBRARY(protobuf-lite ${LIBPROTOBUF_LITE_SRCS} ${LIBPROTOBUF_LITE_HDRS})
 ADD_LIBRARY(protobuf ${LIBPROTOBUF_FULL_SRCS} ${LIBPROTOBUF_FULL_HDRS})
 ADD_LIBRARY(protoc ${LIBPROTOC_SRCS} ${LIBPROTOC_HDRS})

library/depends/protobuf/google/protobuf/compiler/command_line_interface.cc

@@ -910,7 +910,7 @@ bool CommandLineInterface::InterpretArgument(const string& name,
         cerr << disk_path << ": warning: directory does not exist." << endl;
       }
 
-      proto_path_.push_back(make_pair<string, string>(virtual_path, disk_path));
+      proto_path_.push_back(make_pair<string, string>(virtual_path.c_str(), disk_path.c_str()));
     }
 
   } else if (name == "-o" || name == "--descriptor_set_out") {

plugins/mapexport/.gitignore

@@ -0,0 +1 @@
+proto/*.pb.*

plugins/mapexport/CMakeLists.txt

@@ -1,12 +1,11 @@
 PROJECT(mapexport)
-SET(MAPEXPORT_SOURCE_DIR ${dfhack_SOURCE_DIR}/plugins/mapexport)
 
 include_directories (
-    ${CMAKE_CURRENT_BINARY_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}
     ${dfhack_SOURCE_DIR}/library/depends/protobuf/
 )
 
-#Generated protobuf files and the headers they will require
+#The protobuf sources we generate will require these headers
 SET(PROJECT_HDRS
 ${dfhack_SOURCE_DIR}/library/depends/protobuf/google/protobuf/stubs/once.h
 ${dfhack_SOURCE_DIR}/library/depends/protobuf/google/protobuf/stubs/common.h
@@ -15,23 +14,33 @@ ${dfhack_SOURCE_DIR}/library/depends/protobuf/google/protobuf/wire_format_lite_i
 ${dfhack_SOURCE_DIR}/library/depends/protobuf/google/protobuf/generated_message_util.h
 ${dfhack_SOURCE_DIR}/library/depends/protobuf/google/protobuf/repeated_field.h
 ${dfhack_SOURCE_DIR}/library/depends/protobuf/google/protobuf/extension_set.h
-proto/Tile.pb.h
 )
 
 SET(PROJECT_SRCS
 mapexport.cpp
-proto/Tile.pb.cc
 )
 
+SET(PROJECT_PROTOS
+${CMAKE_CURRENT_SOURCE_DIR}/proto/Tile.proto
+${CMAKE_CURRENT_SOURCE_DIR}/proto/Block.proto
+${CMAKE_CURRENT_SOURCE_DIR}/proto/Map.proto
+)
+
+#Create new lists of what sources and headers protoc will output after we invoke it
+STRING(REPLACE ".proto" ".pb.cc;" PROJECT_PROTO_SRCS ${PROJECT_PROTOS})
+STRING(REPLACE ".proto" ".pb.h;" PROJECT_PROTO_HDRS ${PROJECT_PROTOS})
+
+LIST(APPEND PROJECT_HDRS ${PROJECT_PROTO_HDRS})
+LIST(APPEND PROJECT_SRCS ${PROJECT_PROTO_SRCS})
+
 SET_SOURCE_FILES_PROPERTIES( ${PROJECT_HDRS} PROPERTIES HEADER_FILE_ONLY TRUE)
 LIST(APPEND PROJECT_SRCS ${PROJECT_HDRS})
 
-FILE(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/proto)
-
+#Generate sources from our proto files and store them in the source tree
 ADD_CUSTOM_COMMAND(
-OUTPUT proto/Tile.pb.cc proto/Tile.pb.h
-COMMAND protoc-bin -I=${CMAKE_CURRENT_SOURCE_DIR}/proto --cpp_out=${CMAKE_CURRENT_BINARY_DIR}/proto ${CMAKE_CURRENT_SOURCE_DIR}/proto/Tile.proto
-DEPENDS protoc-bin ${CMAKE_CURRENT_SOURCE_DIR}/proto/Tile.proto
+OUTPUT ${PROJECT_PROTO_SRCS} ${PROJECT_PROTO_HDRS}
+COMMAND protoc-bin -I=${CMAKE_CURRENT_SOURCE_DIR}/proto --cpp_out=${CMAKE_CURRENT_SOURCE_DIR}/proto ${PROJECT_PROTOS}
+DEPENDS protoc-bin ${PROJECT_PROTOS}
 )
 
 DFHACK_PLUGIN(mapexport ${PROJECT_SRCS} ${PROJECT_HDRS} LINK_LIBRARIES protobuf-lite)

plugins/mapexport/mapexport.cpp

@@ -2,7 +2,8 @@
 #include <Console.h>
 #include <Export.h>
 #include <PluginManager.h>
-#include "proto/Tile.pb.h"
+
+#include "proto/Map.pb.h"
 using namespace DFHack;
 
 DFhackCExport command_result mapexport (Core * c, std::vector <std::string> & parameters);

plugins/mapexport/proto/Block.proto

@@ -0,0 +1,12 @@
+package dfproto;
+option optimize_for = LITE_RUNTIME;
+
+import "Tile.proto";
+
+message Block
+{
+    required uint32 x = 1;
+    required uint32 y = 2;
+    required uint32 z = 3;
+    repeated Tile tiles = 4;
+}

plugins/mapexport/proto/Map.proto

@@ -0,0 +1,12 @@
+package dfproto;
+option optimize_for = LITE_RUNTIME;
+
+import "Block.proto";
+
+message Map
+{
+    required uint32 x_size = 1;
+    required uint32 y_size = 2;
+    required uint32 z_size = 3;
+    repeated Block blocks = 4;
+}