[LLVMdev] Android build patch

[Kaylor, Andrew]

Is it possible to try your program on a non-Android Linux?  It might make debugging a bit less painful.

If you haven't updated to the trunk code recently, it's possible that calling finalizeObject more than once would cause a crash.  The changes that introduced multiple module support should have fixed that issue.

It might be useful to set breakpoints in the memory manager you are using.  During finalizeObject you are likely to see calls to finalizeMemory, getSymbolAddress, registerEHFrames and notifyObjectLoaded.  I think registerEHFrames is the most likely source of the problem, particularly given that the debugger is also crashing.  If that's the problem, you could probably get a little further (for experimental purposes at least) by just having the memory manager do nothing in response to that call.

-Andy

From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of James Lyon
Sent: Monday, November 04, 2013 11:46 PM
To: Renato Golin
Cc: LLVM Dev
Subject: Re: [LLVMdev] Android build patch

I'm trying to build LLVM on Android rather than the other way around! Really just to see if it can be done. I worked out the first problem (my code was written for the old JIT and I'd missed something in updating to the MCJIT to make it work on ARM). It still doesn't work, but at this point I have no idea why and it'll be a while before I get to look at it again: the Android debug tools simply crash and give no output whatsoever, so all I know is that the test app exits somewhere inside MCJIT::finalizeObject.

On 05/11/13 07:13, Renato Golin wrote:
On 30 October 2013 17:08, James Lyon <jameslyon0 at gmail.com<mailto:jameslyon0 at gmail.com>> wrote:
Sadly even though it builds I can't get generated code to work - it appears at the moment that the generated code doesn't have execute permissions set for some reason (this is 3.3, not svn).

Hi,

You may have a look at the LLVM Linux builds (http://llvm.linuxfoundation.org/index.php/Main_Page), it might help you getting Android compiled with LLVM.

cheers,
--renato

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