But which part of the code (which line numbers) ?
And if the file is currently compiling fine, why adding macros that would complexify the file?

And if the file is currently compiling fine, why adding macros that would complexify the file?

To avoid readers of this file think that signals is supported on windows

Hm, actually, windows does support signals, but they are not asynchronous, plus SIGINT creates a thread - very odd

It is ok to leave as-is, but the codes does not compile. Please fix

http-server.obj : error LNK2019: unresolved external symbol strsignal referenced in function do_term [D:\a\libevent\libevent\build\http-server.vcxproj]
D:\a\libevent\libevent\build\bin\Debug\http-server.exe : fatal error LNK1120: 1 unresolved externals [D:\a\libevent\libevent\build\http-server.vcxproj]