Some work on support 64-bit windows compilation using mingw

CMakeLists.txt

@@ -398,7 +398,7 @@ if(MSVC OR MINGW)
 endif()
 
 if(MINGW)
-    find_library(LIBGCC NAMES "libgcc_s_dw2-1.dll" "libgcc_s_sjlj-1.dll" PATHS ${CMAKE_FIND_ROOT_PATH})
+    find_library(LIBGCC NAMES "libgcc_s_dw2-1.dll" "libgcc_s_sjlj-1.dll" "libgcc_s_seh-1.dll" PATHS ${CMAKE_FIND_ROOT_PATH})
     if(LIBGCC)
         file(COPY ${LIBGCC} DESTINATION ${CMAKE_BINARY_DIR}/bin/)
     endif()

cmake/Toolchain-mingw-64bit.cmake

@@ -0,0 +1,20 @@
+# Usage:
+# cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/Toolchain-mingw-64bit.cmake 
+
+# the name of the target operating system
+SET(CMAKE_SYSTEM_NAME Windows)
+
+# which compilers to use for C and C++
+SET(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc-posix)
+SET(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++-posix)
+SET(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
+
+# here is the target environment located
+SET(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32 /usr/lib/gcc/x86_64-w64-mingw32/4.9-posix ${PROJECT_SOURCE_DIR}/dependencies)
+
+# adjust the default behaviour of the FIND_XXX() commands:
+# search headers and libraries in the target environment, search
+# programs in the host environment
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ALWAYS)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

cmake/Toolchain-mingw.cmake

@@ -1,3 +1,6 @@
+# Usage:
+# cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/Toolchain-mingw.cmake 
+
 # the name of the target operating system
 SET(CMAKE_SYSTEM_NAME Windows)
 

src/scriptengine/scriptstdstring.hpp

@@ -11,13 +11,15 @@
 #ifndef SCRIPTSTDSTRING_H
 #define SCRIPTSTDSTRING_H
 
+// String must be included before angelscript.h to avoid some errors during
+// compilation with GetObject function
+#include <string>
+
 #ifndef ANGELSCRIPT_H 
 // Avoid having to inform include path if header is already include before
 #include <angelscript.h>
 #endif
 
-#include <string>
-
 //---------------------------
 // Compilation settings
 //