Fix: enable cross compilation by removing the AC_CHECK_FILE macro

[oleorhagen]

From the man-page on the AC_CHECK_FILE macro, we can read that:

You might also need to check for the existence of files. Before using these macros, ask yourself whether a runtime test might not be a better solution. Be aware that, like most Autoconf macros, they test a feature of the host machine, and therefore, they die when cross-compiling.

Therefore, move to using a simple shell if/else as the replacement.

[simo5]

Not sure why this is needed, if you fail the check simply nss testing is unavailable, which is what you want during a cross compile anyway, because you can't test cross compiled binaries directly on the build host.
What am I missing ?

[oleorhagen]

Not sure why this is needed, if you fail the check simply nss testing is unavailable, which is what you want during a cross compile anyway, because you can't test cross compiled binaries directly on the build host. What am I missing ?

The AC_CHECK_FILE macro will literally exit the with the error:

configure: error: cannot check for file existence when cross compiling

when cross compiling 😞

[simo5]

I see, that is annoying.
I will merge this.

[oleorhagen]

Thanks 😸