c - Why shared library path is hardcoded in execuatble? -

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recently got test binary. when checked using objdump, observed includes hard coded library path. why needed to hardcode path that? shouldn't path taken shell environment variables or -l parameter instead ?

objdump -p testprog

the output includes hardcoded path shared libraries:

....   needed      /home/test/lib/liba.so   needed      /home/test/lib/libb.so   needed      /home/test/lib/libc.so ....

this because 3 .so files had no soname on host test program built. tell person built rebuild liba.so -wl,soname,liba.so , similar other two, relink main program.


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