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I am new to CMake and Geant4. I am trying to build a project using them. Also, I am working in a remote cluster. When I cmake, there's no error. But when I do make the error I am getting is, 

make[2]: *** No rule to make target '/usr/lib64/libXmu.so', needed by 'PRO_simulation'.  Stop.
make[1]: *** [CMakeFiles/PRO_simulation.dir/all] Error 2
make: *** [all] Error 2

however, 

ls -rt /usr/lib64/libXmu*

gives:

lrwxrwxrwx. 1 root root     15 Jan 11  2016 /usr/lib64/libXmu.so.6 -> libXmu.so.6.2.0
-rwxr-xr-x. 1 root root 109552 Nov 20  2015 /usr/lib64/libXmu.so.6.2.0
lrwxrwxrwx. 1 root root     16 Jan 11  2016 /usr/lib64/libXmuu.so.1 -> libXmuu.so.1.0.0
-rwxr-xr-x. 1 root root  19440 Nov 20  2015 /usr/lib64/libXmuu.so.1.0.0

Since its a remote cluster I cannot do a link with the name "libXmu.so" (After requesting the cluster authorities, still there's no use), but I can do the link to my local directory.

Now my question is what should I do in cmake such that, it will look for libXmu.so in my local directory instead of /usr/lib64/libXmu.so

Mohanraj S
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  • would it be helpful if you do `LD_LIBRARY_PATH=/home/local:$LD_LIBRARY_PATH` cmake ..` – XapaJIaMnu Mar 04 '19 at 15:48
  • No, that doesn't help. Sorry, I edited the question now. When I do `cmake`, there are no issues. The error occurs when I do `make` after that. There's a file named `build.make` which has a line `/usr/lib64/linXmu.so`. That is why `make` is looking at that specific path. – Mohanraj S Mar 05 '19 at 09:33

1 Answers1

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First of all, this is a hack and by no means a proper solution, but you can link directly to a .so file: Link .so file to .cpp file via g++ compiling

  1. Open CMakeLists.txt and remove all references to libXmu linking in target_link_libraries for all targets.
  2. Add /home/user/path/to/libXmu.so to the cmake CXX or link flags. More information on how to do that can be found in: How do I add a linker or compile flag in a CMake file? or: Set CFLAGS and CXXFLAGS options using CMake

I would recommend that you first try something such as:

export CFLAGS=/home/user/path/to/libXmu.so
export CXXFLAGS=/home/user/path/to/libXmu.so

Before running cmake. If this fails, open CMakeLists.txt and try to find where extra CFLAGS and CXXFLAGS are defined and add the path to libXmu.so

Another thing that you can do is you can run make VERBOSE=1, which will show you the exact gcc/g++ command issued, copy it in a text editor and replace -lxmu with /home/user/path/to/libXmu.so

I hope at least one of those works.

XapaJIaMnu
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