[cfe-dev] clang 4.0 installation

Tue Apr 18 02:50:18 PDT 2017

Hi Don,

Thanks a ton for the detailed steps.

Thanks,
Chandini

From: don hinton [mailto:hintonda at gmail.com]
Sent: Tuesday, April 18, 2017 12:01 PM
To: Chandini Sainu (GIS) <chandini.sainu at wipro.com>
Cc: cfe-dev at lists.llvm.org
Subject: Re: [cfe-dev] clang 4.0 installation

** This mail has been sent from an external source **
Assuming you have the correct version of gcc in your path, this should work for you (please note that cmake will try /usr/bin/cc first, so you may still have to explicitly set CC and CXX if alternatives aren't set correctly):

mkdir clang && cd clang

wget http://releases.llvm.org/4.0.0/llvm-4.0.0.src.tar.xz
tar -xf llvm-4.0.0.src.tar.xz

wget http://releases.llvm.org/4.0.0/cfe-4.0.0.src.tar.xz
tar -xf cfe-4.0.0.src.tar.xz

ln -s ../../cfe-4.0.0.src llvm-4.0.0.src/tools/clang

mkdir build && cd build

cmake \
  -DCMAKE_INSTALL_PREFIX=/applics/platform/clang_4_0_0 \
  -DLLVM_ENABLE_FFI=ON \
  -DCMAKE_BUILD_TYPE=Release \
  -DLLVM_BUILD_LLVM_DYLIB=ON \
  -DLLVM_TARGETS_TO_BUILD="host;AMDGPU" \
  ../llvm-4.0.0.src

hth...
don

On Mon, Apr 17, 2017 at 6:59 AM, don hinton <hintonda at gmail.com<mailto:hintonda at gmail.com>> wrote:
Thanks.  It looks like you have the appropriate dependancies installed.

However, since you only provided the output, I can't tell how you ran gcc.  I really need you to follow my instructions and provide both the command and the output.  As a general rule, the more information you provide, the easier it is to help.

Could you please do it again and give me the command and output?  For example, if someone asked me to run gcc -v, here's what I'd send (including clang as well):

** gcc -- default compiler installed in /usr/bin

project-computing-lab-vm1:/home/d80049854 $ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.4-2ubuntu1~14.04.3' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3)

** clang -- 4.0 installed in /home/$USER/bin

project-computing-lab-vm1:/home/d80049854 $ clang -v
clang version 4.0.0 (http://llvm.org/git/clang.git 560b6b60eb83c4776255a27e23e95fef73171cf5) (http://llvm.org/git/llvm.git 3b621275428532a32a2806585282fa025af2d241)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/d80049854/usr/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.3
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Candidate multilib: .;@m64
Selected multilib: .;@m64

thanks...
don

On Sun, Apr 16, 2017 at 11:56 PM, chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com> <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>> wrote:
Hi Don,

Thanks for the reply.

I need to compile clang 4.0 in our environment. Below are the requested details.

$uname -a
Linux oulng127.emea.nsn-net.net<http://oulng127.emea.nsn-net.net> 3.10.0-327.el7.x86_64 #1 SMP Thu Oct 29 17:29:29 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux
$cmake --version
cmake version 3.6.2
$gcc --version
gcc (GCC) 6.2.0
Copyright (C) 2016 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.
$python -V
Python 2.7.5
$python3 -V
Python 3.5.2

Kindly let me know how can we proceed further.

Thanks,
Chandini

From: don hinton [mailto:hintonda at gmail.com<mailto:hintonda at gmail.com>]
Sent: Friday, April 14, 2017 8:29 PM
To: Chandini Sainu (GIS) <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>>
Cc: cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>
Subject: Re: [cfe-dev] clang 3.9 installation

** This mail has been sent from an external source **
Can't help with the prebuilt versions -- they are mostly provided to test new versions and not used for anything else.

But I will try to help you build it, so please run the following commands (and never run sudo or login as root unless you absolutely have to).  Please provide both the command and the output -- just cut-n-paste both from your terminal:

$ uname -a
$ cmake --version
$ gcc -v
$ python -V

This should tell you the defaults that cmake will use.  Also, as Serge noted above, the cmake_error.txt file you provided showed that you were using the wrong versions of both gcc and python.

If you have newer versions for gcc and python installed on your box, you can always use the CC and CXX environment variables to select a different compiler or different version, e.g.,

$ CC=gcc-6.2 CXX=g++-6.2 cmake ../llvm ........

Not sure the best way to set your python version, other than symlink or alias, but a google search should provide plenty of alternatives.

Once you have fixed those 2 problems, we can try running cmake.

hth...
don

On Fri, Apr 14, 2017 at 12:01 AM, chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com> <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>> wrote:
Hi,

Can I have update on the below mail.

Your quick reply would be highly appreciated.

Thanks,
Chandini

From: Chandini Sainu (GIS)
Sent: Friday, March 17, 2017 12:39 PM
To: cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>
Cc: 'don hinton' <hintonda at gmail.com<mailto:hintonda at gmail.com>>
Subject: RE: [cfe-dev] clang 3.9 installation

Hi,

Can someone help me with the below query.

Thanks,
Chandini

From: don hinton [mailto:hintonda at gmail.com]
Sent: Thursday, March 16, 2017 7:23 PM
To: Chandini Sainu (GIS) <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>>
Cc: cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>
Subject: Re: [cfe-dev] clang 3.9 installation

** This mail has been sent from an external source **
Hi Chandini:

I've never used any of the pre-built binaries, so I really don't know.  Perhaps someone else could give a better answer.

take care...
don

On Thu, Mar 16, 2017 at 1:34 AM, chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com> <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>> wrote:
Hi Don,

Greetings for the day!

As the clang 4.0 been released, can you help me in selecting the correct version from the pre-built binaries for RHEL7 - x86_64

http://llvm.org/releases/download.html

[cid:image001.png at 01D29E5D.C6E50290]

Your quick reply would  be highly appreciated.

Thanks,
Chandini

From: don hinton [mailto:hintonda at gmail.com]
Sent: Tuesday, November 15, 2016 4:56 PM
To: Chandini Sainu (GIS) <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>>
Cc: cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>; sepavloff at gmail.com<mailto:sepavloff at gmail.com>

Subject: Re: [cfe-dev] clang 3.9 installation

** This mail has been sent from an external source **
If you want to build llvm+clang from scratch, please follow these instructions:

http://clang.llvm.org/get_started.html

But, if you just want to use it, I'd suggest you download one of the pre-built binaries found here:

http://llvm.org/releases/download.html

On Tue, Nov 15, 2016 at 2:34 AM <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>> wrote:
Hi Don,

Tried without sudo but still the same issue.

llvm 3.9 is downloaded. Do you want me to link clang to llvm/tools?

FYI

[sainu at oulnxc55 xfer/sainu/cfe-3.9.0.src]$ls
bindings  CMakeLists.txt   docs      include  INSTALL.txt  LICENSE.TXT     NOTES.txt   runtime  tools      utils
cmake     CODE_OWNERS.TXT  examples  INPUTS   lib          ModuleInfo.txt  README.txt  test     unittests  www

[sainu at oulnxc55 xfer/sainu/llvm-3.9.0.src/tools]$ls
bugpoint         llvm-ar                           llvm-cov        llvm-extract      llvm-mcmarkup  llvm-shlib       msbuild              yaml2obj
bugpoint-passes  llvm-as                           llvm-c-test     llvm-go           llvm-nm        llvm-size        obj2yaml
CMakeLists.txt   llvm-as-fuzzer                    llvm-cxxdump    llvm-jitlistener  llvm-objdump   llvm-split       opt
dsymutil         llvm-as-parasitic-coverage-repro  llvm-diff       llvm-link         llvm-pdbdump   llvm-stress      sancov
gold             llvm-bcanalyzer                   llvm-dis        llvm-lto          llvm-profdata  llvm-symbolizer  sanstats
llc              LLVMBuild.txt                     llvm-dwarfdump  llvm-mc           llvm-readobj   llvm-vtabledump  verify-uselistorder
lli              llvm-config                       llvm-dwp        llvm-mc-fuzzer    llvm-rtdyld    lto              xcode-toolchain
[sainu at oulnxc55 xfer/sainu/llvm-3.9.0.src/tools]$

Thanks,
Chandini

From: don hinton [mailto:hintonda at gmail.com<mailto:hintonda at gmail.com>]
Sent: Monday, November 14, 2016 8:38 PM

To: Chandini Sainu (GIS) <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>>
Cc: sepavloff at gmail.com<mailto:sepavloff at gmail.com>; clang developer list <cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>>; Suryakanta Sahoo (GIS) <suryakanta.sahoo at wipro.com<mailto:suryakanta.sahoo at wipro.com>>

Subject: Re: [cfe-dev] clang 3.9 installation

** This mail has been sent from an external source **
Btw, sudo only explains the gcc version issue.

The other errors seem to indicate cmake can't find the llvm directory.  Did you download llvm?  Normally, you download clang under the llvm/tools directory (renaming or linking cfe as clang), then run cmake like this:

  cmake <options> ../llvm

where ../llvm points to the llvm root directory.

again, hth...
don

On Mon, Nov 14, 2016 at 6:52 AM, <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>> wrote:
Hi Hinton,

Will check and revert back.

Thanks,
Chandini

From: don hinton [mailto:hintonda at gmail.com<mailto:hintonda at gmail.com>]
Sent: Monday, November 14, 2016 8:07 PM
To: Chandini Sainu (GIS) <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>>; sepavloff at gmail.com<mailto:sepavloff at gmail.com>
Cc: cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>; Suryakanta Sahoo (GIS) <suryakanta.sahoo at wipro.com<mailto:suryakanta.sahoo at wipro.com>>

Subject: Re: [cfe-dev] clang 3.9 installation

** This mail has been sent from an external source **
The problem is sudo.

Once you run sudo, you are root and have a completely different environment. My guess is that the newer version of gcc is installed in a non-standard location. If that's the case, you may need a few more options.

Try running cmake and make without sudo, then, if needed, run "sudo make install" to actually do the installation step.

hth...
don

On Mon, Nov 14, 2016 at 5:35 AM via cfe-dev <cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>> wrote:
Hi Serge,

Thanks for the response!

We are using the latest version of gcc (6.2)and python(3.3) but the cmake is picking up the server installed packages only.

Kindly suggest.

Regards,
Chandini

From: Serge Pavlov [mailto:sepavloff at gmail.com<mailto:sepavloff at gmail.com>]
Sent: Monday, November 14, 2016 6:45 PM
To: Chandini Sainu (GIS) <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>>
Cc: dwiberg at gmail.com<mailto:dwiberg at gmail.com>; Joerg Sonnenberger <joerg at bec.de<mailto:joerg at bec.de>>; Clang Dev <cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>>; Suryakanta Sahoo (GIS) <suryakanta.sahoo at wipro.com<mailto:suryakanta.sahoo at wipro.com>>

Subject: Re: [cfe-dev] clang 3.9 installation

** This mail has been sent from an external source **
According to the attached files you are using too old gcc (4.4.6 but 4.8+ is needed) and python (2.6 but 2.7+ is needed).

Thanks,
--Serge

2016-11-14 14:50 GMT+07:00 via cfe-dev <cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>>:
Hi David/Joerg,

Below are requested details.

Your quick support is highly appreciated!

Thanks,
Chandini

-----Original Message-----
From: David Wiberg [mailto:dwiberg at gmail.com<mailto:dwiberg at gmail.com>]
Sent: Monday, November 14, 2016 2:39 AM
To: Suryakanta Sahoo (GIS) <suryakanta.sahoo at wipro.com<mailto:suryakanta.sahoo at wipro.com>>
Cc: cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>; Chandini Sainu (GIS) <chandini.sainu at wipro.com<mailto:chandini.sainu at wipro.com>>
Subject: Re: [cfe-dev] clang 3.9 installation

** This mail has been sent from an external source **

Hi,

You will need to provide more information for anyone to be able to help you.

For example:
- Which Linux distribution/version are you running? → RHEL6.7
- What steps have you performed?

GCC version → gcc_6_2_0
Cmake version → cmake-3_6_2
Python version → python3_3_2

Command being used →  sudo cmake -DCMAKE_INSTALL_PREFIX=/applics/platform/clang_3_9_0 -DLLVM_ENABLE_FFI=ON -DCMAKE_BUILD_TYPE=Release -DLLVM_BUILD_LLVM_DYLIB=ON -DLLVM_TARGETS_TO_BUILD="host;AMDGPU" -Wno-dev ..

- What error messages do you receive?

Errors attached.

Best regards
David

2016-11-11 0:15 GMT+01:00 via cfe-dev <cfe-dev at lists.llvm.org<mailto:cfe-dev at lists.llvm.org>>:
> Hi Team,
>
>
>
> We are trying to install clang 3.9 in Linux Server. We tried
> installing using the steps available in the website, we are getting errors.
>
>
>
> Could you please assist us with the procedure to do so.
>
>
>
>
>
> Thanks & Regards,
>
> Suryakanta Sahoo
>
> Project Engineer,
>
> Wipro Technology Services Ltd
>
>
>
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