I would like to embed versioning and build date information in my application
executable, and I'm not sure how to do that. To clarify, in C or C++, I would
write the following:
#include <stdio.h>
#ifndef APPVER
#define APPVER "no version"
#endif
void main()
{
printf("%s\n", APPVER);
}
I can than compile the code by passing "-D APPVER=1.0" to the compiler command
line and have it print the correct version.
How can this be done in Racket?
I don't really want to check-in a file with the version number in it, and
besides, I would like to add my GIT commit ID and build date as well in the
same way.
My idea is that the build script would write a file like this at build time:
#lang racket/base
(define (app-version) "1.0")
(define (app-commit-id) "abcdefg")
(define (app-build-date) "06-01-2017T09:10:12")
(provide app-version app-commit-id app-build-date)
I would than require this file from other places, but only if it exists,
something like this:
(if (file-exists? "app-version.rkt")
(require "app-version.rkt")
(begin
(define (app-version) "dev build")
(define (app-commit-id) "unknown")
(define (app-build-date) "no build")))
Unfortunately, the code above does not work because require needs to be
defined at top level.
Does anyone have any suggestions?
Thanks,
Alex.
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