[cfe-dev] clang: build failure on Ubuntu 11.10

Thu Nov 1 16:52:13 PDT 2012

What is your exact set up?

In reference on my system:

KNOWN:

Debian Sid/Unstable Kernel 3.2.

GCC DEFAULT SETUP:

gcc (Debian 4.7.2-4) 4.7.2
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

LLVM/Clang/LLDB/Compiler-RT/LIBCXX Trunk via SVN under their proper 
checkout points. [lldb/clang under /trunk/llvm/tools, compiler-rt/libcxx 
under /trunk/llvm/projects, test-suite/llvm-test under /trunk/llvm/projects]

CONFIGURATION CMAKE SETUP:

cmake version 2.8.9

PROCEDURE I USE TO BUILD:

Two stages.

Create a build directory for trunk against gcc outside of trunk.

$ mkdir cmake-gcc-trunk

Configure with cmake generic configuration with no optimization flags on 
the compilers just to get it to build.

user at host: cmake-gcc-trunk$ cmake -DCMAKE_C_COMPILER=/usr/bin/gcc 
-DCMAKE_CXX_COMPILER=/usr/bin/g++ ../trunk/llvm

user at host: cmake-gcc-trunk$ make

You can edit the CMakeCache.txt file and set up MinSizeRel, set BOOL to 
ON for LLVM_EXAMPLES, CLANG_EXAMPLES, TEST-SUITE, SHARED_LIBRARIES, etc.

You can also copy down all those areas you want configured how you want, 
put them in a shell script and run the steps to update your cmake config 
and thus keep the CMakeCache.txt file current.

Once you build and install into /usr/local

Create a build directory for trunk against clang/clang++ local outside 
of trunk.

$ mkdir cmake-clang-trunk

Configure with cmake generic configuration with no optimization flags on 
the compilers just to get it to build.

user at host: cmake-clang-trunk$ cmake -DCMAKE_C_COMPILER=/usr/local/clang 
-DCMAKE_CXX_COMPILER=/usr/local/bin/clang++ ../trunk/llvm

user at host: cmake-gcc-trunk$ make

 From then on you only occasionally have to deal with broken updates via 
svn/git not fully up-to-date before clang/clang++ can self-host builds 
under /usr/local.

NOTE: On occasion ubuntu, debian and other distributions have to update 
their gcc defaults and made aware within llvm/clang when building 
against and trying to find the necessary header files, but that always 
gets resolved.

- Marc

On 11/01/2012 01:32 AM, Sujit Kamthe wrote:
>
> Hi,
>
> I tried building clag on Ubuntu 11.10 using instruction given at 
> http://clang.llvm.org/get_started.html
>
> The make command throws following error:
>
> autobuild at CFCServer:~/CheckMate/build$ make
>
> make[1]: Entering directory `/home/autobuild/CheckMate/build/lib/Support'
>
> llvm[1]: Compiling APFloat.cpp for Debug+Asserts build
>
> In file included from 
> /home/autobuild/CheckMate/llvm/include/llvm/Support/type_traits.h:20:0,
>
>                  from 
> /home/autobuild/CheckMate/llvm/include/llvm/ADT/SmallVector.h:19,
>
>                  from 
> /home/autobuild/CheckMate/llvm/include/llvm/ADT/ArrayRef.h:13,
>
>                  from 
> /home/autobuild/CheckMate/llvm/include/llvm/ADT/APInt.h:18,
>
>                  from 
> /home/autobuild/CheckMate/llvm/include/llvm/ADT/APFloat.h:104,
>
>                  from 
> /home/autobuild/CheckMate/llvm/lib/Support/APFloat.cpp:15:
>
> /home/autobuild/CheckMate/build/include/llvm/Support/DataTypes.h:79:3: 
> error: #error "Don't have a definition for uint64_t on this platform"
>
> In file included from 
> /home/autobuild/CheckMate/llvm/include/llvm/Support/MathExtras.h:17:0,
>
>                  from 
> /home/autobuild/CheckMate/llvm/include/llvm/ADT/APInt.h:20,
>
>                  from 
> /home/autobuild/CheckMate/llvm/include/llvm/ADT/APFloat.h:104,
>
>                  from 
> /home/autobuild/CheckMate/llvm/lib/Support/APFloat.cpp:15:
>
> Can anybody please help?
>
> Regards,
>
> *Sujit Kamthe*
>
> **
>
> *buildbox_logo*
>
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-- 
Marc J. Driftmeyer
Email :: mjd at reanimality.com <mailto:mjd at reanimality.com>
Web :: http://www.reanimality.com
Cell :: (509) 435-5212
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