Wiring pi is defunct.

Question

I used to love using the Wiring Pi library in C for programing the IO of the Raspberry pi.
I haven't used a PI for a project in a while, and I guess in that time developer of WiringPi has
stopped supporting the library.
I tried using version 2.52 on a raspberry pi 4, but it says something like the hardware isn't listed in /proc/cpuinfo.

So I guess I cant use wiringPi. what C libraries would you use for programing GPIO in C on a rasperry Pi 4?
Ive looked around the internet, and I see some various options, but Im not sure what code works with which boards, etc.

JWx · Answer

This is strange - OP is using 2.52 which should be compatible with Pi 4 according to the above link... 
 Official documentation seems outdated - repository url from http://wiringpi.com/download-and-install/ is dead. 
 I have found unofficial fork on github with an issue describing effort to maintain it: 
 https://github.com/WiringPi/WiringPi/issues/80 
 and links to some packages with greater version numbers (eg. 2.61) - maybe working better, maybe not - users should decide by themselves if they want to try an unofficial fork. 
 The libgpio is mentioned there - but in negative context (as a reason to have wiringpi maintained)