AW: [uClinux-dev] CONFIG_USER_BUSYBOX_MD5SUM breaks pthreads?

[Wolf, Josef]

Myself wrote:

> Now I decided to activate md5sum utility in busybox.  With this, I get
> problems with pthreads.  For some reason, only the first four
> invocations of pthread_create() are successful.  The fifth invocation
> simply hangs.  There's no error code returned, the system call simply
> don't return.  The main thread is still there, but it stops to do
> anything.  I have attached a file at the end of the mail and marked
> the point of hang with comments to illustrate the problem.
> 
> When I unset the CONFIG_USER_BUSYBOX_MD5SUM, then everything starts
> working properly again.
> 
> Any ideas what could be the cause of the problem or how to track down
> the problem?

OK, I've tracked it down now.  Seems to be a stack overflow in busybox.
Adding

  LDFLAGS += -Wl,-elf2flt="-r -s 65536"

to user/busybox/Makefile solves the problem.

Now my question is: Where is the proper place to increase stack size for
busybox?