"-lrt" library not linked at the end while building pmwcas

[nisargshah95]

When I try to run the bztree pibench wrapper with pibench, I get the following error from within pmwcas:
undefined reference 'shm_open'

It looks like while compiling pmwcas shared object, -lrt is linked at the beginning rather than at the end. For instance, this is the command run on my system to compile pmwcas:

/usr/bin/c++ -fPIC  -std=c++11 -O2 -g -DNDEBUG  -lpthread -lnuma -lrt -shared -Wl,-soname,libpmwcas.so -o libpmwcas.so CMakeFiles/pmwcas.dir/src/util/nvram.cc.o CMakeFiles/pmwcas.dir/src/util/status.cc.o CMakeFiles/pmwcas.dir/src/environment/environment.cc.o CMakeFiles/pmwcas.dir/src/common/allocator_internal.cc.o CMakeFiles/pmwcas.dir/src/common/pmwcas_internal.cc.o CMakeFiles/pmwcas.dir/src/common/environment_internal.cc.o CMakeFiles/pmwcas.dir/src/common/epoch.cc.o CMakeFiles/pmwcas.dir/src/mwcas/mwcas.cc.o CMakeFiles/pmwcas.dir/src/environment/environment_linux.cc.o  /usr/lib/x86_64-linux-gnu/libpmemobj.so 

If I move -lpthread -lnuma -lrt to the end and run the same command again the bztree pibench wrapper works fine. Maybe some fix is required in the CMakeLists.txt to link these libraries at the end rather than at the beginning.