Variables are defined in the header

[NomAnor]

The header can't be included multiple times because all variables are defined in the header, not declared.

This line in vkel.h

PFN_vkAcquireNextImageKHR __vkAcquireNextImageKHR;

should be

extern PFN_vkAcquireNextImageKHR __vkAcquireNextImageKHR;

and the old line should be in the vkel.c file.

This needs to be done for all lines from // Instance and device extension names until #define vkAcquireNextImageKHR __vkAcquireNextImageKHR.
For a quick fixed I copied the generator lines but it would be better to put them in a seperate function.

[vallentin]

I haven't extensively tested this yet. Just wanted to get a fix out, so I'll verify that everything works tomorrow!

For a quick fixed I copied the generator lines but it would be better to put them in a seperate function.

I did so as well. But I've been planning on doing a rewrite of the generator, since it's gotten pretty messy.