我在尝试静态链接libDuma时遇到了以下错误，请问如何让g ++使用libDuma中的malloc？如何解决gcc linux中的多重定义错误？

[email protected]:~/CodeTest$ g++ ./testDuma.cpp -g -o testDuma -static -lduma -pthread

/usr/lib/gcc/i686-linux-gnu/4.4.5/../../../../lib/libc.a(malloc.o): In function `free':

(.text+0x4b00): multiple definition of `free'

/usr/lib/gcc/i686-linux-gnu/4.4.5/../../../../lib/libduma.a(duma.o):(.text+0x25f0): first defined here

/usr/lib/gcc/i686-linux-gnu/4.4.5/../../../../lib/libc.a(malloc.o): In function `malloc':

(.text+0x4bc0): multiple definition of `malloc'

/usr/lib/gcc/i686-linux-gnu/4.4.5/../../../../lib/libduma.a(duma.o):(.text+0x2730): first defined here

/usr/lib/gcc/i686-linux-gnu/4.4.5/../../../../lib/libc.a(malloc.o): In function `realloc':

(.text+0x5950): multiple definition of `realloc'

/usr/lib/gcc/i686-linux-gnu/4.4.5/../../../../lib/libduma.a(duma.o):(.text+0x23d0): first defined here

collect2: ld returned 1 exit status