make throws the following error.

[quinnoaj]

cc

-ggdb -O3 -Wall -c -o vanitygen.o vanitygen.c
vanitygen.c:26:25: fatal error: openssl/sha.h: No such file or directory
#include <openssl/sha.h>
^
compilation terminated.
make: *** [vanitygen.o] Error 1

[oniony]

Install openssl?

[Rutrus]

This worked for me in Ubuntu or Debian based system:
sudo apt install libssl-dev

[pickhardt]

If you're on a Mac, try this (adding a symlink): https://www.anintegratedworld.com/mac-osx-fatal-error-opensslsha-h-file-not-found/