#368 Support building outside of the source directory

[Alberto Garcia]

Building outside the source directory is handy for e.g. distributors who need to build many versions of the same package (with GTK, SDL, etc.).

This is what happens now:

$ mkdir build
$ cd build
$ ../configure --disable-dependency-tracking
$ make
/usr/bin/perl ../perl/cpp-perl.pl config.h ../ui/options.dat | /usr/bin/perl -I../perl ../ui/gtk/options-header.pl - public > options.h.tmp && mv options.h.tmp options.h
/usr/bin/perl -I../perl ../settings.pl ../settings.dat > settings.c.tmp && mv settings.c.tmp settings.c
/usr/bin/perl -I../perl ../settings-header.pl ../settings.dat > settings.h.tmp && mv settings.h.tmp settings.h
/usr/bin/perl -I../perl ../keysyms.pl gtk ../keysyms.dat > ui/gtk/keysyms.c.tmp && mv ui/gtk/keysyms.c.tmp ui/gtk/keysyms.c
/bin/bash: ui/gtk/keysyms.c.tmp: No such file or directory
Makefile:3276: recipe for target 'ui/gtk/keysyms.c' failed
make: *** [ui/gtk/keysyms.c] Error 1

The problem is that ui/gtk doesn't exist if we're not building inside the source directory.

This can be solved trivially with the attached patch.

Regards,

Berto

[Fredrick Meunier]

Looks fair to me - anyone want to raise any other points before I commit this for 1.2?

[Sergio Baldoví]

This approach output duplicate objects when using silent rules (make V=0). I suggest muting the directory creation.

[Alberto Garcia]

It sounds good to me too, thanks!

[Fredrick Meunier]

OK, the proposal also sounds good to me. I had less time than I hoped this weekend, but I intend to add this patch tomorrow unless I'm beaten to it, bring the release dates and notes up to date and then build the release tarballs barring overnight blockers.

[Sergio Baldoví]

Thanks. Committed in [r5588].