[Toybox] TOYBOX_VERSION

[enh]

On Mon, Oct 16, 2017 at 2:24 PM, Rob Landley <rob at landley.net> wrote:
> Hey, didn't wind up in spam this time! (Gmail learns.)
>
> On 10/16/2017 12:29 PM, enh wrote:
>> i was going to send this patch to allow Android to add "-android"
>> without having to work out what the toybox version would otherwise
>> have been:
>>
>> diff --git a/main.c b/main.c
>> index 6025d43..57e53ec 100644
>> --- a/main.c
>> +++ b/main.c
>> @@ -6,7 +6,10 @@
>>  #include "toys.h"
>>
>>  #ifndef TOYBOX_VERSION
>> -#define TOYBOX_VERSION "0.7.4"
>> +#ifndef TOYBOX_VENDOR
>> +#define TOYBOX_VENDOR ""
>> +#endif
>> +#define TOYBOX_VERSION "0.7.4"TOYBOX_VENDOR
>>  #endif
>>
>>  // Populate toy_list[].
>
> Huh. I'd assumed people wanting that would just override TOYBOX_VERSION
> from the command line to include the -suffix.

i can do, but i kind of wanted to keep your version number too... it's
not completely meaningless, even though in reality "0.7.4" is always
going to mean "somewhere after 0.7.4 but before 0.7.5". it still gives
a ballpark idea of how old a toybox version a bug report refers to.

>> but i notice that you haven't updated that to 0.7.5 yet, and are
>> instead relying on `git describe --tags` to override this.
>>
>> is that the plan going forward, or was this just an oversight?
>
> It's because I'd already pushed the cut rewrite up to github, an then
> went "this is a can of worms, I should cut the release first", which
> meant tagging a historical version. In orer to update the TOYBOX_VERSION
> macro in main, I'd have to branch and I've mostly avoiding branching the
> history.
>
> It wasn't an oversight, it was a hack because I did this release
> slightly wrong. :)
>
>> the reason i bring this up now is that with Treble there are two
>> (potentially different) copies of toybox on a device: the /system one
>> and the /vendor one which may lag behind, but is built from the same
>> source. in the past we've used sed(1) to hack this together, but it
>> might make more sense to just support this in toybox (similar to what
>> mksh does). especially for us, because we're moving to a more
>> declarative build system where that gets a bit more interesting
>> (https://android-review.googlesource.com/511275).
>>
>> but if your plan is for the git tag to be the one true source of
>> version, we can switch to a git/sed combo...
>
> The build system sets TOYBOX_VERSION if there is a .git directory at the
> top of tree and git describe works. That means it's #defined so the
> #ifndef doesn't trigger.
>
> But the tarballs don't have the .git directory (and git isn't a build
> prerequisite), so there's a fallback #define that I'm supposed to update
> every release, but I'm not 100% reliable about that. (It's in my release
> checklist, but this time I got steps out of order because backtracking.)
>
> As for the patch, I don't have a strong opinion. If having two version
> macros makes life easier for you, I can take the patch. Could you send
> me one with the headers I can "git am"?

sure, no worries. attached.

[PATCH] Add TOYBOX_VENDOR.

This allows distributions to add their own tag to the toybox version,
in particular so Android can add "-android" for a version number like
"0.7.5-android".
---
 main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)


> Thanks,
>
> Rob
>
> (Thanks for your patience on the other stuff, I drove back from
> Minneapolis this weekend and then $DAYJOB ate today. Working on it...)

i'm assuming that you'll get round to the groups(1) and setprop(1)
patches as soon as you have time, and don't actually need us to
resend, so let me know if i misinterpreted your earlier mail :-)

-- 
Elliott Hughes - http://who/enh - http://jessies.org/~enh/
Android native code/tools questions? Mail me/drop by/add me as a reviewer.
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