[Buildroot] How can i compile bash3.1 with uclibc

[renxuefeng <renxf_maillist@126.com>]

i met a problem When i build buildroot with uclibc.
while compiling the bash3.1, it showed some error:

nojobs.o: In function `make_child':
nojobs.c:(.text+0x464): undefined reference to `fork'

I thought this is because the uclibc didnot support the fork function
under the armnommu platform
but how can i using bash under uclibc.
does anybody have some patch for this problem.