This file is part of mingw-cross-env. See doc/index.html for further information. This patch has been taken from: http://cvs.savannah.gnu.org/viewvc/IlmBase/Imath/ImathMatrix.h?root=openexr&r1=1.7&r2=1.8&view=patch --- a/Imath/ImathMatrix.h 2010/07/16 22:48:40 1.7 +++ b/Imath/ImathMatrix.h 2010/08/04 21:01:38 1.8 @@ -51,6 +51,7 @@ #include #include +#include #if (defined _WIN32 || defined _WIN64) && defined _MSC_VER // suppress exception specification warnings