make command error: ld cannot find libraries that exist

Question

I'm running make and ld will not find libraries that I have verified to exist using dnf provides '*/libpthread.so' for example. I get the following error code:

g++ -fopenmp -static -lpthread -o bayescan_2.1 start.o beta.o dirichlet.o RJupdates.o MHupdates.o likelihood.o read_write.o anyoption.o 
/bin/ld: cannot find -lpthread
/bin/ld: cannot find -lm
/bin/ld: cannot find -ldl
/bin/ld: cannot find -lpthread
/bin/ld: cannot find -lc
collect2: error: ld returned 1 exit status
make: *** [Makefile:4: bayescan_2.1] Error 1

These libraries all are found in /usr/lib64 on my chair's computing cluster. However the ld.so.conf file does not include a path that only goes to /usr/lib64 and I don't have admin permissions to create a new .conf file in /etc/ld.so.conf.d/.

Is there any way I can force make to search for the libraries in /usr/lib64?

Here is the actual Makefile in question:

# BayeScan makefile

bayescan_2.1: start.o beta.o dirichlet.o RJupdates.o MHupdates.o likelihood.o read_write.o anyoption.o 
    g++ -fopenmp -static -lpthread -o bayescan_2.1 start.o beta.o dirichlet.o RJupdates.o MHupdates.o likelihood.o read_write.o anyoption.o 

start.o: start.cpp errors.cpp anyoption.h global_defs.h
    g++ -fopenmp -c start.cpp errors.cpp 

beta.o: beta.cpp global_defs.h
    g++ -fopenmp -c beta.cpp 
      
dirichlet.o: dirichlet.cpp global_defs.h
    g++ -fopenmp -c dirichlet.cpp 

RJupdates.o: RJupdates.cpp global_defs.h
    g++ -fopenmp -c RJupdates.cpp 

MHupdates.o: MHupdates.cpp global_defs.h
    g++ -fopenmp -c MHupdates.cpp 

likelihood.o: likelihood.cpp global_defs.h
    g++ -fopenmp -c likelihood.cpp 

read_write.o: read_write.cpp errors.cpp global_defs.h
    g++ -fopenmp -c read_write.cpp errors.cpp 

anyoption.o: anyoption.cpp anyoption.h 
    g++ -fopenmp -c anyoption.cpp 

clean: 
    rm *.o bayescan_2.1

EDIT:

Turns out ld was trying to find static libraries with the -static flag. Removing this flag from the Makefile fixed the issue.

Answer 1

Simply add -L/usr/lib64 to the link command. See Directory Options in the GCC manual:

-Ldir

Add directory dir to the list of directories to be searched for -l.

If you can't or don't want to edit the Makefile, you can supply additional search directories through an environment variable

LIBRARY_PATH

The value of LIBRARY_PATH is a colon-separated list of directories, much like PATH. When configured as a native compiler, GCC tries the directories thus specified when searching for special linker files, if it cannot find them using GCC_EXEC_PREFIX. Linking using GCC also uses these directories when searching for ordinary libraries for the -l option (but directories specified with -L come first).

For example, run this in your shell before invoking make:

$ export LIBRARY_PATH="$LIBRARY_PATH:/usr/lib64"