Make Test failed for Perl

failed test on ..ext/DynaLoader/t/DynaLoader.t

error # 20 "array should contain one result result or more: libc => ()"

it did not find libc.so in /lib

In the config.sh file I see (below)

libc='/lib/libc-2.1.92.so'
libperl='libperl.a'
libpth='/usr/local/lib /lib /usr/lib'
libs='-lnsl -lgdbm -ldl -lm -lcrypt -lutil -lc'
libsdirs=' /usr/lib'
libsfiles=' libnsl.a libgdbm.a libdl.a libm.a libcrypt.a libutil.a libc.a'
libsfound=' /usr/lib/libnsl.a /usr/lib/libgdbm.a /usr/lib/libdl.a /usr/lib/libm.a /usr/lib/libcrypt.a /usr/lib/libutil.a /usr/lib/libc.a'
libspath=' /usr/local/lib /lib /usr/lib'

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which path setting do I have wrong?
do I add this path to 'PERL_OTHERLIBDIRS' or something?