Installing from Source: Problem with CMakeList

ROOT
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ROOT Version: 6.14.04
Platform: Linux Mint 17.1
Compiler: GCC 4.8.4

I am trying to install the latest version of ROOT from source on Linux Mint 17.1, and when I run the first cmake command, I get the following error:

CMake Error: The source “/home/justin/root/CMakeLists.txt” does not match the source “/home/justin/root/test/CMakeLists.txt” used to generate cache. Re-run cmake with a different source directory.

Which file in the source should I use as the source directory? It is not made clear in the installation instructions.

Thank you very much for your help.

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Please try with the following in the top directory of your git clone of ROOT:

$ mkdir mybuild && cd mybuild
$ cmake ..
$ cmake --build .

The source directory to use should be the top directory, and the build directory needs to be a different directory (which should be empty to start with). Cheers,

1 Like
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Thank you very much! That solved the problem that I was having before, but now I have encountered another issue. When I run the cmake … command, I get the error described in the attached logfile, and I am unsure of what it means. Am I missing missing some required software for Root?CMakeError.txt (3.4 KB)

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I had a look at the file, and it looks like your compiler may be too old. Which compiler are you using? You need at least a compiler with full support for C++11. The oldest we support is GCC 4.8.5.

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