Comments on: Dropping NSLog in release builds

By: Joel

Joel — Tue, 03 Mar 2009 20:39:28 +0000

CIMGF helped me out once again! I’d put off handling my NSLog problem way too long. Your approach is clear and effective. Thank you!

By: yile

yile — Sat, 28 Feb 2009 07:20:20 +0000

I am from cocoaChina forum, just a developer on iPhone. Thank you, man!

By: rgm

rgm — Thu, 05 Feb 2009 20:37:07 +0000

@garretmurray.net I scratched my head on this one for a while.

It turns out that if you have your build set to "Simulator | Debug" then the 'Other C Flags' setting will not show up. Set your project to "Device | Debug" and the flags setting will suddenly show up in the Build Settings.

Set it, then you can go back to "Simulator | Debug" and it appears to hold. I tested this on the 2.2.1 SDK.

By: id.garrettmurray.net/

id.garrettmurray.net/ — Tue, 03 Feb 2009 22:01:48 +0000

Is there a good way to do this for iPhone development? There’s no way to pass an Other C flag that I can tell in an iPhone app target…

By: wevah.vox.com/

wevah.vox.com/ — Tue, 27 Jan 2009 20:38:16 +0000

I've been doing something pretty similar, though my DLog (inside the #ifdef DEBUG) looks like:

define DebugLog(s, ...) NSLog((@"%s %s:%d " s), func, basename(FILE), LINE, ## VA_ARGS);

Just some extra contextual information before the actual log statement. (This does, of course, lead to extra noise, which might end up causing more confusion in simple projects.)

By: jollyjinx

jollyjinx — Tue, 27 Jan 2009 14:12:47 +0000

I’m using something similar, but more verbose for us developers. It’s also logging the instance and line numbers , class and method name. As described here:

http://www.jinx.de/teclog/2008.11.13.my-own-version-nslog-jlog.html

Jolly aka Patrick

author of: ScreenRecycler, JollysFastVNC, SmartSleep, SmartSokoban and more.

By: stompy

stompy — Tue, 27 Jan 2009 11:48:00 +0000

@Berhnard;

have a look here

By: Daniel Jalkut

Daniel Jalkut — Tue, 27 Jan 2009 00:25:32 +0000

Apple ships a tool which should be installed on most, if not all developers' systems, called "tops." It's really just a slightly glorified sed-type tool, but it behaves in some sensible ways that would be harder to program in with sed. For example, it won't replaces occurences of the symbol name in comments, etc.

Run something like this on your sources to see what it would do:

tops -dont replace "NSLog" with "DLog" *.m

Then take out the -dont if you're happy with what you see ;)

Daniel

By: me.yahoo.com/a/D2iXY8odr

me.yahoo.com/a/D2iXY8odr — Mon, 26 Jan 2009 21:27:48 +0000

Excellent trick! But I don't seems to have the "Other C Flags" section... I am in the Build tab of Debug-Config... Obviously I missed a tiny details, but which one?

Thx

Bernhard

By: ergosys.myopenid.com/

ergosys.myopenid.com/ — Mon, 26 Jan 2009 21:06:07 +0000

That can cause mysterious bugs or if you are lucky, a compile error when DEBUG is off because /* / is not a statement. E.g. if (x) DLog(...). Instead, use do {} while (0) in place of the / */