No more Makefile for building?

O²
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1

Dear experts,

so far I always used “make install” to compile changes in my code, going into sw/BUILD/O2-latest/O2 or in the subdirectory where I actually made the change (the same for QualityControl).
Recently I made a pull from git and in the BUILD directory there is no more the Makefile, so that using “make” seems impossible. I know that ninja is an alternative (and a “build.ninja” file is actually present) but…

  1. The build.ninja file is only in the parent directory and not in (for example) O2/Detectrors/*… etc… (not a big issue, but strange to me)

  2. Building with ninja fails probably because of the gcc library GLIBCXX_3.4.26 (line 5 of the linked file) (I’m on Ubuntu 18.04)

Do I really need to use ninja to build?

If this is the case, do you have any hint on how to solve the problem at point 2? On this file I pasted the output of the command “sudo ninja install -v” executed in “sw/BUILD/O2-latest/latest” without having modified the code with respect to that cloned (yesterday) from the git dev branch and built with aliBuild.

Thanks a lot in advance.
Nicolò

2

Can you check if:

cmake --build . --target install

solves your issues? In principle you should not need to know what is being used by CMake to do the actual build.

3

Hi Giulio,

thanks. It launches the building but it doesn’t solve the library problem. This is the output:

nvalle2@fedora:~/alice/sw/BUILD/O2-latest/O2$ sudo cmake --build . --target install
[1/3090] Linking CXX shared library stage/lib/libO2GPUCommon.so
FAILED: version/libversion.a
: && /home/nvalle2/alice/sw/ubuntu1804_x86-64/CMake/v3.19.2-local1/bin/cmake -E rm -f version/libversion.a && /home/nvalle2/alice/sw/ubuntu1804_x86-64/GCC-Toolchain/v10.2.0-alice2-local1/bin/ar qc version/libversion.a version/CMakeFiles/version.dir/O2Version.cxx.o && /home/nvalle2/alice/sw/ubuntu1804_x86-64/GCC-Toolchain/v10.2.0-alice2-local1/bin/ranlib version/libversion.a && :
/home/nvalle2/alice/sw/ubuntu1804_x86-64/CMake/v3.19.2-local1/bin/cmake: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.26’ not found (required by /home/nvalle2/alice/sw/ubuntu1804_x86-64/CMake/v3.19.2-local1/bin/cmake)
[10/3090] Building CXX object DataFormats/Headers/CMakeFiles/O2test-headers-DataHeader.dir/test/testDataHeader.cxx.o
ninja: build stopped: subcommand failed.

Nicolò

4

Do you use direnv to setup your build environment?

5

What happens here is that CMake was compiled with a different C++ than the one you are using to compile, and the environment seems to be picking up the system version of libstdc++.

6

Well… I would say no. At least, I don’t do anything more than loading the environment with
“alienv enter O2/latest” before truing to build.

7

Could you try with:

WORK_DIR=$PWD/sw . $WORK_DIR/osx_x86-64/O2/latest/etc/profile.d/init.sh

where $PWD/sw is your alibuild work directory?

8

The init.sh is executed without problem, But then when trying to build I get the same the same as before…

9

Hi Giulio,

basically, I have the same problem! Before I could compile typing “make -j install”! What should I do now?! If I compile using aliBuild it takes a lot of time.

Thanks,

Giacomo.

10

Hi Giulio,

in QualityControl/ModulesDevelopment.md at master · AliceO2Group/QualityControl · GitHub
it is recommended to use make -j8 install for development, but it does not work.
I am not an expert and using alibiuld is quite slow. Is there a solition that gives the functionallity of the previous make -j8 install?
thanks

11

Hi,

You should use ninja. I will update the doc.

Cheers,
Barth

12

Dear Barth

thanks for the prompt response. When I try to use ninja I get
zsh: command not found: ninja
how do I install ninja?

have a nice day
guillermo

13

Dear Guillermo,

It is probably safer to try

cmake --build . --target install

as it would simply reuse ninja as it was used when running aliBuild.

14

Actually you should follow these instructions: 🛠 Build the packages · ALICE Analysis Tutorial