This file is part of mingw-cross-env. See doc/index.html for further information. This patch has been taken from: http://tech.groups.yahoo.com/group/pdflib/message/20472 diff -urN a/libs/pdcore/pc_util.c b/libs/pdcore/pc_util.c --- a/libs/pdcore/pc_util.c 2010-04-29 15:50:05.000000000 +0200 +++ b/libs/pdcore/pc_util.c 2010-05-11 23:59:03.915954995 +0200 @@ -30,8 +30,12 @@ #include /* for finite */ #endif -#if defined (isfinite) +#if defined(isfinite) #define PDC_ISFINITE isfinite +#if defined(__MINGW32__) +/* MinGW has infinite, but we still need DWORD */ +#include +#endif #else /* isfinite */ #if defined(WIN32)