llvm dev - Mar 2016 - Trunk: LLVM build is failing with a lot of `undefined reference` errors

Hello

I'm trying to compile LLVM, Clang and LLDB on Ubuntu 14.04 LTS as
described on llvm.org [1][2]:

```
sudo apt-get install subversion cmake ninja-build doxygen \
  swig libedit-dev libncurses5-dev libxml2-dev
mkdir llvm-src
cd llvm-src
svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm
cd llvm/tools
svn co http://llvm.org/svn/llvm-project/cfe/trunk clang
svn co http://llvm.org/svn/llvm-project/lldb/trunk lldb
cd clang/tools
svn co http://llvm.org/svn/llvm-project/clang-tools-extra/trunk extra
cd ../../../projects
svn co http://llvm.org/svn/llvm-project/compiler-rt/trunk compiler-rt
svn co http://llvm.org/svn/llvm-project/libcxx/trunk libcxx
cd ../..
mkdir build
cd build
cmake ../llvm -G Ninja -DLLDB_DISABLE_CURSES:BOOL=TRUE \
  -DCMAKE_C_COMPILER=/usr/bin/clang-3.6 \
  -DCMAKE_CXX_COMPILER=/usr/bin/clang++-3.6
ninja -j4
```

After some time (ninja shows 1836/3922) I got a lot of `undefined
reference` errors:

http://paste.ubuntu.com/15402351/

I also tried to use `gcc` instead of `clang` and `make` instead of
`ninja` --- same result.

What am I doing wrong?

[1] http://clang.llvm.org/get_started.html#build
[2] http://lldb.llvm.org/build.html#BuildingLldbOnLinux

-- 
Best regards,
Aleksander Alekseev
http://eax.me/

On 3/16/2016 11:07 AM, Aleksander Alekseev via llvm-dev
wrote:
> svn co http://llvm.org/svn/llvm-project/libcxx/trunk  libcxx
Try checking out libcxxabi as well.

-Krzysztof

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, 
hosted by The Linux Foundation

Hi Aleksander,

You have not checked out libcxxabi. It must be checked out together with libcxx.
See http://www.llvm.org/docs/GettingStarted.html  p8.

Kind regards,
Evgeny Astigeevich


-----Original Message-----
From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of
Aleksander Alekseev via llvm-dev
Sent: 16 March 2016 16:07
To: llvm-dev
Subject: [llvm-dev] Trunk: LLVM build is failing with a lot of `undefined
reference` errors

Hello

I'm trying to compile LLVM, Clang and LLDB on Ubuntu 14.04 LTS as described
on llvm.org [1][2]:

```
sudo apt-get install subversion cmake ninja-build doxygen \
  swig libedit-dev libncurses5-dev libxml2-dev mkdir llvm-src cd llvm-src svn co
http://llvm.org/svn/llvm-project/llvm/trunk llvm cd llvm/tools svn co
http://llvm.org/svn/llvm-project/cfe/trunk clang svn co
http://llvm.org/svn/llvm-project/lldb/trunk lldb cd clang/tools svn co
http://llvm.org/svn/llvm-project/clang-tools-extra/trunk extra cd
../../../projects svn co http://llvm.org/svn/llvm-project/compiler-rt/trunk
compiler-rt svn co http://llvm.org/svn/llvm-project/libcxx/trunk libcxx cd ../..
mkdir build
cd build
cmake ../llvm -G Ninja -DLLDB_DISABLE_CURSES:BOOL=TRUE \
  -DCMAKE_C_COMPILER=/usr/bin/clang-3.6 \
  -DCMAKE_CXX_COMPILER=/usr/bin/clang++-3.6
ninja -j4
```

After some time (ninja shows 1836/3922) I got a lot of `undefined reference`
errors:

http://paste.ubuntu.com/15402351/

I also tried to use `gcc` instead of `clang` and `make` instead of `ninja` ---
same result.

What am I doing wrong?

[1] http://clang.llvm.org/get_started.html#build
[2] http://lldb.llvm.org/build.html#BuildingLldbOnLinux

--
Best regards,
Aleksander Alekseev
http://eax.me/
_______________________________________________
LLVM Developers mailing list
llvm-dev at lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev

> Try checking out libcxxabi as well.
It helped, thanks.

But I have another problem now. Regression tests don't pass:

http://paste.ubuntu.com/15406485/

Also I discovered that build process sometimes consumes about 10 Gb of
RAM. Luckily I have total 16 Gb of RAM. Still I had to close Google
Chrome and kill KVM guest systems to compile a project. I think its
just an insanity.

-- 
Best regards,
Aleksander Alekseev
http://eax.me/