Today we can just use a compiler to make programs and you can even program your own compiler. So how was the first compiler made? It's like, which came first the chicken or the egg.No one came first.
Neither the egg, nor the chicken. The first living species on this EARTH was blue green ALGAE, which were single celled organisms. They took birth due to the various natural CHEMICAL reactions. Then GRADUALLY, as the earth's atmosphere changed, new and diverse species were generated. That is how the current day living organisms were created( by mutation of the ancient species). Got it.

Now,enough of biology, let's come back to compiler.
Well, as far as I know, When the computers were originally created, They were hard wired devices, and coding was done in machine language (0 and 1).
Then assemblers were generated, which converted the assembly language(more understandable Than m/c language).
Now, gradually with time translators were generated as the new languages were developed. As the NEEDS of different languages were different, The structure of compiler changed( Mutation took place ).
Earlier the compilers used to convert the codes written by the user into machine code. now a days some compilers use the concept virtual computers.
Also in today's time compilers like YACC (yet another compiler compiler) have been generated, Which enable the users to make their own compiler.

Oho I have almost written an assay, Did it help? Yes, it helped. Thanks for everything.

So compilers were originally hardware, and then someone used a hardware compiler to make a software compiler like the one's we use today?I think so.