This is a backport of curl to older versions of Windows, up to and including Windows NT 3.51.

curl requires Winsock 2 in order to work properly If you are using Windows NT 3.51 or an early version of Windows 95 that doesn't support Winsock 2, you will also need winsock351.

You will need to use Visual C++ 6.0 to build curl with support for old versions.

1. Apply the patches on this repo on top of curl submodule
2. Run autoconf.bat to generate the tool/hugehelp.c file
3. Enter the winbuild folder and execute the following using a Developer Command Prompt:

nmake /f Makefile.vc mode=static VC=6 ENABLE_SSPI=no ENABLE_IPV6=no ENABLE_IDN=no ENABLE_SCHANNEL=no DEBUG=no GEN_PDB=yes RTLIBCFG=static

The current mandatory options are the following:

• VC=6
• ENABLE_SSPI=no
• ENABLE_IPV6=no (if using an operating system that doesn't support Winsock 2 natively)
• ENABLE_IDN=no
• ENABLE_SCHANNEL=no
• RTLIBCFG=static (if targeting Windows NT 3.51, otherwise you will require msvcrt.dll to be present on your system)

Every other option can be customized to your liking.