ROOT6 and gcc5.4

ROOT
1

Hi,

After a recent ubuntu upgrade (16.04LTS) I can no longer install ROOT6. Apparently it is incompatible with gcc5.4. Looking at the forum I understood that gcc5.x is not supported by clang. However, I could not understand whether there was a simple and robust workaround to make it work.

As a desperate measure, I also tried to install ROOT5.34 but it also fails*.

Thank you for your help.
Adrian

core/utils/src/rootcint_tmp.cxx:817:51: error: invalid conversion from ‘void ()(const char)’ to ‘void ()(char)’ [-fpermissive]

2
3

Hi,

Thank you for the pointers. I actually read these posts and try it myself. Unfortunately it does not seem to work:

$ cmake “-D_GLIBCXX_USE_CXX11_ABI=0” /home/adrian/Downloads/root-6.06.06
– Found GCC. Major version 5, minor version 4
CMake Error at cmake/modules/CheckCompiler.cmake:61 (message):
Found GCC compiler with new ABI. Cling does not support the GCC 5 ABI yet
Call Stack (most recent call first):
CMakeLists.txt:35 (include)

– Configuring incomplete, errors occurred!

Thank you

4
5

Sorry to insist, I tried the command you posted but I get the same error message.

6

Remove your “build subdirectory” completely and start from scratch again.

7

Maybe you also need to download the latest sources? or “git pull”

Alternative way would be: