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I did verify that it works on Intel.

But indeed, on PPC, no display. I tried selecting and identifying data, that works, assuming you know where the data is to click on it.

... testing with sqlite/spatialite in a Terminal shows that spatialite is not working on the PPC side. So it's not really a Qgis problem. Looks like I need to fix my Sqlite framework...

Are you using a G4 or G5 Mac?

After more testing on a few different SQLite framework versions and both a G4 and G5, it looks like it's not working on a G4. Something must be getting optimized for a G5 in the spatialite code.

...ugh, I buggered my testing. saptialite framework does work on a G4, and Qgis spatialite does not work on a G5. So we're back to a Qgis problem, somewhere in the build.

I am using a Powerbook with a G4 processor (1.67 GHz)

I've tracked this down to a problem with Qt Carbon on Leopard. I use Qt Cocoa for Snow Leopard builds and Qt Carbon for Leopard builds. This is because the ready-made binaries, for some reason, do not include PPC in the Cocoa versions, even though they say they support Leopard. For the older Qgis 1.4 I used Qt 4.5 Carbon for both Leopard and Snow, and Snow does not have the problem, so it looks like it's the combination of Qt Carbon on Leopard.

I have no idea if it is possible to work around this in Qgis, it's beyond my skills.

I can build the Leopard Qgis with Qt Cocoa, BUT, that will either take a lot of work compiling Qt Cocoa to include PPC code, or will be Intel-only if I use the downloadable Qt Cocoa.

I've added configuration ability for a custom build of Qt in , so a PPC cocoa Qt can be compiled and used. This is a workaround for now. Ultimately, someone with more Qt/Mac skills needs to figure this out so a Carbon Qt works (or get Nokia to include PPC cocoa, or just wait until PPC Macs are no longer supported at all).

So, forgot about this bug report. Recent test on PPC with Qt 4.6 Cocoa (from source): fail. Still no spatialite display. I thought I tested this before (thus the findings in comment 5).

I can't test - no PPC Mac available (well, I could dig up something), and current dev tools don't compile PPC (need to install older tools on old Mac).

I'd say with the current support state of PPC Macs (the last PPC Macs will be officially vintage by the end of August this year) and OS X (10.5 is unsupported and 10.6 requires later PPC Macs minimum), AND that Nokia isn't providing pre-built Mac PPC binaries for Qt any more, supporting PPC in QGIS should be very low priority if at all. Sure, Macs have a long usable life beyond what's supported and there are a few QGIS users that will gripe...

Can we assume that PPC Mac is no more supported?

OK with me, I don't do PPC in my builds, Apple hasn't supported them in the OS for almost 3 years and all PPC models are officially vintage now.