Add missing headers causing compile errors on Linux

Don't build GL example at all on Linux
Add PolyVoxConfig.cmake file

library/CMakeLists.txt

@@ -124,3 +124,13 @@ INSTALL(TARGETS PolyVoxUtil
 )
 
 INSTALL(FILES ${UTIL_INC_FILES} DESTINATION include/PolyVoxUtil)
+
+#Set up OGREConfig.cmake
+if(WIN32)
+	set(CONFIG_FILE_DIR "CMake")
+else(WIN32)
+	set(CONFIG_FILE_DIR "lib/PolyVox/CMake")
+endif(WIN32)
+
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/PolyVoxConfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/PolyVoxConfig.cmake)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/PolyVoxConfig.cmake DESTINATION ${CONFIG_FILE_DIR})

library/PolyVoxConfig.cmake.in

@@ -0,0 +1,23 @@
+# Find PolyVox includes and library
+#
+# This module defines
+#  PolyVox_INCLUDE_DIRS
+#  PolyVox_LIBRARIES, the libraries to link against to use OGRE.
+#  PolyVox_LIBRARY_DIRS, the location of the libraries
+#  PolyVox_FOUND, If false, do not try to use OGRE
+#
+# Copyright <20> 2008, Matt Williams
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+include(FindPackageMessage)
+
+set(PREFIX "@CMAKE_INSTALL_PREFIX@")
+set(PolyVox_LIBRARY_DIRS "${PREFIX}/lib")
+set(PolyVox_INCLUDE_DIRS "${PREFIX}/include/PolyVoxCore" "${PREFIX}/include/PolyVoxUtil")
+set(PolyVox_LIBRARIES "PolyVoxUtil" "PolyVoxCore")
+
+message(STATUS "Found PolyVox")
+message(STATUS "  libraries : '${PolyVox_LIBRARIES}' from ${PolyVox_LIBRARY_DIRS}")
+message(STATUS "  includes  : ${PolyVox_INCLUDE_DIRS}")

library/include/PolyVoxCore/BlockVolumeIterator.inl

@@ -23,6 +23,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #include "Block.h"
 #include "BlockVolume.h"
 #include "Vector.h"
+#include "Region.h"
 #pragma endregion
 
 namespace PolyVox

library/include/PolyVoxCore/Utility.h

@@ -26,6 +26,8 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 #include "PolyVoxForwardDeclarations.h"
 
+#include <cassert>
+
 namespace PolyVox
 {
 	POLYVOX_API uint8 logBase2(uint32 uInput);

library/include/PolyVoxCore/Vector.inl

@@ -22,6 +22,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #include <cassert>
 #include <cmath>
 #include <string>
+#include <cstring>
 
 namespace PolyVox
 {