On Mon Jan 06 2014 at 1:50:44 PM, Fletcher, John P <[email protected]> wrote:
> I note from the release notes for LLVM 3.4 that gcc 4.6 is not on the > supported compiler list for this release, By "this release", do you mean the (~6 months away) 3.5 release? GCC 4.6 is supported for Clang 3.4 (the current stable release, released earlier today). and won't be for future releases. I have explained below that at the > moment with the 3.5 svn release I cannot get LLDB to compile using clang > and libc++ and it will not compile with gcc 4.6. I asked two questions > which have had so far no response: > > > a) What is the last version of LLDB which will build with gcc 4.6? > > b) Will that be useful for working with more recent clang 3.5 with > c++1y? > > I note from the release of 3.4 there is a binary for llvm+clang for Ubuntu > 12.04. It would be very helpful if there could also be a binary release of > LLDB for the same system as it is not possible at the moment to build LLDB > on 12.04 without installing extra compilers. > > Ubuntu 12.04 is intended by Ubuntu to be a 'Long Term Support' version, so > it would be helpful if LLDB/LLVM would go along with the spirit of that and > fill in the gaps in the tools. > > Best wishes > > John Fletcher > > > ________________________________ > From: Fletcher, John P > Sent: 02 January 2014 14:13 > To: [email protected] > Subject: FW: Problems with LLDB for Ubuntu 12.04 > > Here is a message which I posted to cfe-users, and I am reposting it here > as probably the right place for it. > > This is from something else which I posted on cfe-dev: > > > The killer problem is that liblldb.so will not link, which is caused by > the incompatibility of the std::string definitions. I could not understand > why it would not link until I read this: > > > > http://stackoverflow.com/questions/12542971/using- > libstdc-compiled-libraries-with-clang-stdlib-libc > > > > It looks to me as though the current LLDB is not buildable on Ubuntu 12.04 > without adding a newer version of libstdc++ as it will not build with > libc++ on 12.04 > > > > This would be solved if it had an option not to use map.emplace so that it > would work with gcc 4.6 > > > I have tried with versions of libc++ built with either libc++abi or > libcxxrt in case that made a difference. It did not. > > It would be helpful to know > > > a) What is the last version of LLDB which will build with gcc 4.6? > > b) Will that be useful for working with more recent clang 3.5 with > c++1y? > > Thank you > > John Fletcher > > > > From: Fletcher, John P > Sent: 01 January 2014 11:56 > To: [email protected] > Subject: Problems with LLDB for Ubuntu 12.04 > > I have spent a long time over the last few days doing the 'easy' thing of > installing LLDB on my computer system. > > I had intended to use the LLVM/Clang 3.4 release which was due out on 23rd > December 2013. Although that date has now gone from the web site 3.4 the > release has not appeared. So I have started to work with the 3.5 svn trunk > codes. > > I use Ubuntu 12.04 which Ubuntu regard as a release with long term > stability, which suits me as mainly a user rather than a developer of > compilers etc. That uses gcc 4.6, which does not support c++1y much at > all. Hence my use of clang, with much enthusiasm, as I want to use c++1y. > > The current release of LLDB will not build with gcc 4.6 because of the use > of features which are in the new standard but not supported in gcc 4.6 > version of libstdc++. > > It will also not build with the current clang/libc++ combination either, > as it all compiles but will not link the main library because it is trying > to use both libc++ and libstdc++ string at the same time which is > impossible. > > So what Ubuntu regard as a long term stable system is not supported by > LLDB. > > This is reflected in discussion on lldb-dev but not in the build > instructions on the web site. There has been some discussion about the > need to install a later gcc such as 4.8. > > I think it would be very helpful if the different parts of LLVM would be > clear about which compilers are supported. > > Thank you > > John Fletcher > > > _______________________________________________ > cfe-dev mailing list > [email protected] > http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev >
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