[lldb-dev] Linux Build Errors w/ LLDB

Mike Sartain mikesart at valvesoftware.com
Tue Oct 15 15:38:50 PDT 2013

> With that said, I am not sure what the other problem is, a GCC bug maybe?

I'm using Clang 3.3, but this looks like it might be a bug with libstdc++ 4.6 (see bottom entry on this page):


Drat. If this is the case, it's going to cause a lot of people on Ubuntu 12.04 some pain.

In any case, I've reverted back to r192702 for now and am working from there - so I'm not blocked at the moment. Not able to sync really either though. :)

I'm also behind a firewall here at Valve so I can't check to see what the Linux buildbot is doing - I'm guessing it's broken as well?

Thanks Enrico.

From: lldb-dev-bounces at cs.uiuc.edu [lldb-dev-bounces at cs.uiuc.edu] on behalf of Enrico Granata [egranata at apple.com]
Sent: Tuesday, October 15, 2013 3:24 PM
To: Michael Sartain
Cc: lldb-dev at cs.uiuc.edu
Subject: Re: [lldb-dev] Linux Build Errors w/ LLDB

that is correct

I did make the changes to Init/Terminate because somehow the OSX build was confused as to the absence of a definition at link-time. I sent an email to the list asking if anyone had a proper fix for the issue, however to no avail yet
I am planning to see what is wrong there ASAP today, but if this is blocking you more critically, feel free to revert while I take a closer look

With that said, I am not sure what the other problem is, a GCC bug maybe?

Enrico Granata
📩 egranata@.com
☎️ 27683

On Oct 15, 2013, at 3:03 PM, Michael Sartain <mikesart at gmail.com<mailto:mikesart at gmail.com>> wrote:

I'm running into these errors while building Linux LLDB with clang 3.3 right now and r192738 for llvm, clang, and lldb:

/home/mikesart/data/src/llvm.svn/llvm/tools/lldb/source/Plugins/Platform/Windows/PlatformWindows.cpp:114:18: error: redefinition of 'Initialize'
/home/mikesart/data/src/llvm.svn/llvm/tools/lldb/source/Plugins/Platform/Windows/PlatformWindows.cpp:133:18: error: redefinition of 'Terminate'

To fix these, I had to undo the change in r192724 (see down below).

I'm also now hitting this error when linking after I fixed the above two though:

/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/chrono:535:6: error: no matching constructor for initialization of 'duration' (aka 'std::chrono::duration<long, std::ratio<1, 1000000> >')
          : __d(__t.time_since_epoch())
            ^   ~~~~~~~~~~~~~~~~~~~~~~

Anyone else seeing this?

mikesart at mikesart64:~/data/src/llvm.hg/llvm/tools/lldb (master)$ git --no-pager diff
diff --git a/source/Plugins/Platform/Windows/PlatformWindows.h b/source/Plugins/Platform/Windows/PlatformWindows.h
index e701751..67d3e88 100644
--- a/source/Plugins/Platform/Windows/PlatformWindows.h
+++ b/source/Plugins/Platform/Windows/PlatformWindows.h
@@ -24,10 +24,10 @@ class PlatformWindows : public Platform

     static void
-    Initialize(void) {}
+    Initialize(void);

     static void
-    Terminate(void) {}
+    Terminate(void);

     PlatformWindows(bool is_host);

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