This is strange. ca-bundle.h is only needed for SSL support, and curl is compiled without SSL support. My ca-bundle.h looks like this:

Code:

/* Do not edit this file - it is created by make! */

And there's no error in that. I still suspect that there are cygwin environment variables set, which somehow influence the build process. You could try the following: Edit ca-bundle.h in curl\lib to contain text like above. Open a cmd shell. Run the following commands:

Code:

SET PATH=C:\pokerth_root\mingw\bin;%PATH% SET ZLIB_PATH=C:\pokerth_root\zlib SET ZLIB_LIBPATH=C:\pokerth_root\zlib SET ZLIB_SOURCE=C:\pokerth_root\zlib SET ZLIB_BINARY=zlib cd /d C:\pokerth_root\curl mingw32-make mingw32-zlib

If that is successful, you may retry to run pokerth_build.cmd (NOT pokerth_download_libs.cmd).