uClinux with uClibc

[Altera_Forum]

Hippo, 

 Can you tell me the reason for building the kernel without using uClibc ? It seems that to compile gdb, i have to build the kernel with uClibc ...  Please explain ...  Thanks.

[Altera_Forum]

Actually kernel does not need uClibc. 

But the user apps do.  The nios2-linux-uclibc-gcc is the same compiler as nios2-elf-gcc. But we build it (using buildroot) again uClibc for uClinux instead of the newlib. The nios2gcc.tar.bz2 has uClibc already. So we don't use the uClibc build in the uClinux-dist.  But you can still use the uClibc of uClinux-dist. You can use nios2-elf-gcc and need to add nostdinc, nostdlib and crt0.... flags to arch.config . You can find these flags in the make rule of Microtronix's 1.4 release or the other arch in uClinux-dist. That's what we did without buidlroot.  There is a "debug" apps in Microtronix's 1.4 release.

[Altera_Forum]

hippo, 

 I saw the "debug" in Microtronix 1.4, but just do not know how to use it ... Are there documentations around ?  Thanks.

[Altera_Forum]

sorry, I don't know. it looks like doing a syscall to kernel, you may trace the syscall.