From 4d92914373768dbbb7f148659f9ab3c5778494dc Mon Sep 17 00:00:00 2001
From: Richard Roberts <richard.jw.roberts@gmail.com>
Date: Thu, 22 Aug 2013 21:44:15 +0000
Subject: [PATCH] Fix for boost compile flags on windows

---
 CMakeLists.txt | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 74b3ca0a7..3c3766dda 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -104,8 +104,13 @@ endif()
 # Boost_NO_SYSTEM_PATHS: set to true to keep the find script from ignoring BOOST_ROOT
 
 # If using Boost shared libs, disable auto linking
-if(MSVC AND NOT Boost_USE_STATIC_LIBS)
-	add_definitions(-DBOOST_ALL_NO_LIB)
+if(MSVC)
+	# Some libraries, at least Boost Program Options, rely on this to export DLL symbols
+	add_definitions(-DBOOST_ALL_DYN_LINK)
+	# Disable autolinking
+	if(NOT Boost_USE_STATIC_LIBS)
+		add_definitions(-DBOOST_ALL_NO_LIB)
+	endif()
 endif()
 
 find_package(Boost 1.43 COMPONENTS serialization system filesystem thread program_options date_time regex timer chrono)