安装sqwebmail时执行make时出错，如何解决？ 急！急！望能帮忙

lgs2233

Making all in numlib
make[1]: Entering directory `/home/webmaster/sqwebmail-1.2.0/numlib'
make[1]: Leaving directory `/home/webmaster/sqwebmail-1.2.0/numlib'
Making all in gdbmobj
make[1]: Entering directory `/home/webmaster/sqwebmail-1.2.0/gdbmobj'
c++ -DHAVE_CONFIG_H -I. -I. -I.     -g -O2 -c testgdbm.C
testgdbm.C: In function `int kdcmp (const void *, const void *)':
testgdbm.C:23: `strcmp' undeclared (first use this function)
testgdbm.C:23: (Each undeclared identifier is reported only once for
each function it appears in.)
testgdbm.C: In function `int main (int, char **)':
testgdbm.C:63: `memcpy' undeclared (first use this function)
testgdbm.C:92: `strlen' undeclared (first use this function)
make[1]: *** [testgdbm.o] Error 1
make[1]: Leaving directory `/home/webmaster/sqwebmail-1.2.0/gdbmobj'
make: *** [all-recursive] Error 1