<div dir="ltr">Hi Matthew,<div><br></div><div>I am working on Linux lldb, but currently I am focused on the x86_64 build, specifically on Ubuntu LTS systems (so 12.04 right now, until we bump up to the next one).</div><div>
<br></div><div>My only experience with the 32-bit version on Ubuntu 12.04 x86 was that I could *not* build it using a configure/(g)make Debug+Asserts build as the compiler/linker would run out of memory. I did get it to make it past several OOM situations, but could never get past liblldb.so linkage using gcc 4.8.2 on a debug build. When I switched to a release build (optimizations enabled, no debug info in the lldb build), then I could make it through the build process.</div>
<div><br></div><div>As to the quality question as it pertains to Linux x86_64 (and probably Linux as a whole): I have run into several what I'd call significant bugs where I could not debug development work without first fixing a bug in lldb. The good news is that these bugs are getting fixed now as my team hits them.</div>
<div><br></div><div>On a related note: in an effort to increase confidence in the state of the code, we are in the process of gathering some code coverage information for lldb under Linux x86_64 when running the local tests. This would be a first approximation as to how much work we may need to do to ensure we've got lldb Linux running reasonably reliably. I'll make an attempt to characterize those results once I have them. (Right now the gcov/lcov-built lldb is crashing when run, so I need to track that down first). It is likely that x86 Linux will share similar results as the x86_64 side w/r/t reliability.</div>
<div><br></div><div>I hope that helps, Matthew.</div><div><br></div><div>Sincerely,</div><div>Todd Fiala</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Feb 12, 2014 at 1:47 AM, Matthew Gardiner <span dir="ltr"><<a href="mailto:mg11@csr.com" target="_blank">mg11@csr.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi<br>
<br>
Could somebody please make a statement on the current quality of building lldb on 32-bit linux systems, and then using the lldb built to debug 32-bit linux processes?<br>
<br>
I'm currently using a virtual box guest with access to only 2.3GB of the hosts RAM and really struggling. I have managed to build (with gcc-4.8.2) lldb without debug symbols, but any attempt to build with debugging just results in the kernel (I think) killing the ld invocation.<br>
<br>
When I do manage to build an lldb, I'm finding that the debug experience is a bit shaky, e.g. the register reading layer seems to be inaccurate, and the inferior process status is often misreported.<br>
<br>
I am happy to contribute somewhat in this area (I have some wait/ptrace etc. experience) - but I wondered whether my continued exploits into 32bit-linux were actually worthwhile...<br>
<br>
Any advice appreciated,<br>
Matthew Gardiner<br>
<br>
<br>
<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><table cellspacing="0" cellpadding="0" style="color:rgb(136,136,136);font-family:'Times New Roman'"><tbody><tr style="color:rgb(85,85,85);font-family:sans-serif;font-size:small">
<td nowrap style="border-top-style:solid;border-top-color:rgb(213,15,37);border-top-width:2px">Todd Fiala |</td><td nowrap style="border-top-style:solid;border-top-color:rgb(51,105,232);border-top-width:2px"> Software Engineer |</td>
<td nowrap style="border-top-style:solid;border-top-color:rgb(0,153,57);border-top-width:2px"> <a href="mailto:tfiala@google.com" style="color:rgb(17,85,204)" target="_blank"><span style="background-color:rgb(255,255,204);color:rgb(34,34,34);background-repeat:initial initial">tfiala@google.com</span></a> |</td>
<td nowrap style="border-top-style:solid;border-top-color:rgb(238,178,17);border-top-width:2px"><font color="#1155cc"> <a>650-943-3180</a></font></td></tr></tbody></table><br></div>
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