Some LLVM 3.5 headers are in wrong paths and different from llvm-3.5 installed from sources.

[Mikael Lepistö]

1) parallels@parallel:~/projects/llvm-git$ lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04

2) parallels@parallel:~/projects/llvm-git$ apt-cache policy llvm-3.5-dev
llvm-3.5-dev:
  Installed: 1:3.5~svn201651-1ubuntu1
  Candidate: 1:3.5~svn201651-1ubuntu1
  Version table:
 *** 1:3.5~svn201651-1ubuntu1 0
        500 http://ubuntu.trumpetti.atm.tut.fi/ubuntu/ trusty/universe amd64 Packages
        500 http://fi.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
        100 /var/lib/dpkg/status

3) Expected having llvm-3.5 final release

4) Having different headers that official 3.5 release compiled from sources has. Apparently Ubuntu has svn201651 revision, instead of final.

I came across the problem, when I tried to compile our code on ubuntu with llvm-3.5-dev.

When you compile llvm by hand and run install headers installed to prefix/include/llvm are a lot different. e.g. Linker.h is found from different path and is different.

parallels@parallel:~/projects/install-llvm-git/include$ diff /usr/include/llvm-3.5/llvm/Linker.h llvm/Linker/Linker.h
1c1
< //===- llvm/Linker.h - Module Linker Interface ------------------*- C++ -*-===//
---
> //===- Linker.h - Module Linker Interface -----------------------*- C++ -*-===//
10,11c10,11
< #ifndef LLVM_LINKER_H
< #define LLVM_LINKER_H
---
> #ifndef LLVM_LINKER_LINKER_H
> #define LLVM_LINKER_LINKER_H
17a18,19
> class Comdat;
> class GlobalValue;
33c35
< Linker(Module *M);
---
> Linker(Module *M, bool SuppressWarnings=false);
54a57,58
>
> bool SuppressWarnings;

My llvm from sources is release_35 tag from git mirror.
parallels@parallel:~/projects/install-llvm-git/include$ ../bin/llvm-config --version
3.5.0

parallels@parallel:~/projects/llvm-git$ git branch -a
  master
* release_35
  remotes/origin/HEAD -> origin/master

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Maxiwell (maxiwell)]

The headers content of LLVM-3.5 in Ubuntu repository is different of the LLVM 3.5 official package.

Repeat the bug:

1. Download the llvm 3.5.0 from official site and untar

wget http://llvm.org/releases/3.5.0/clang+llvm-3.5.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz
tar -xvf clang+llvm-3.5.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz

2. Install llvm-3.5 with apt-get

sudo apt-get install llvm-3.5

3. The same header appears different

diff /usr/include/llvm-3.5/llvm/Support/MemoryBuffer.h Downloads/clang+llvm-3.5.0-x86_64-linux-gnu/include/llvm/Support/MemoryBuffer.h

[Paweł Bylica (chfast)]

It's because this package in trusty is not official 3.5.0 but some snapshot of some previous SVN revision.

You can install correct package from http://llvm.org/apt/