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hash.c:(.text+0xb78): multiple definition of `hash_free'; CMakeFiles/mariadb_obj.dir/ma_hash.c.o:/home/buildbot/buildbot/build/libmariadb/libmariadb/ma_hash.c:73: first defined here

/usr/local/bin/ld: /usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.8.5/../../../libgnutls.a(hash.o): in function `hash_insert':

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/usr/local/bin/ld: /usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.8.5/../../../libgnutls.a(hash.o): in function `hash_delete':

hash.c:(.text+0x189b): multiple definition of `hash_delete'; CMakeFiles/mariadb_obj.dir/ma_hash.c.o:/home/buildbot/buildbot/build/libmariadb/libmariadb/ma_hash.c:425: first defined here