Segmentation fault

[crsengineering]

Hi to all,
I am a newbie about rtklib and cross compilation, I was trying to run rtkrcv but I get "segmentation fault"....
I need to run rtklib on this hardware: OpenWrt on MIPS 74Kc V4.12 (Atheros AR9344 rev 3)

Here my steps:
First step, run rtklib on Ubuntu on my laptop.
I download and unzip rtklib from git (from here [((https://github.com/rtklibexplorer/RTKLIB)] due I've read it was correctly working on Raspberry), I go on str2str folder, make clean and make for both str2str and rtkrcv.
I connect GPS receiver via USB, I start str2str

str2str -in serial://ttyACM0:115200:8:o:1:off#ubx -out tcpsvr://:2222

and it works, then I start rtk2rcv using configuration file

rtkrcv_mips -p 2950 -o /etc/rtklib/rtkrcv.curr.conf

Then I telnet to port 2950, I login, start command and status command, all ok.

Now let's move onto new hardware.
Both packages are already available on OpenWrt, so I install packages using opkg.
str2str correctly works, but using rtkrcv, I login, I start server, but when requesting status I get "segmentation fault".
I supposed it was due to old rtklib version available, that's why I tried using cross-compilation.
I get the same "segmentation fault" issue.

That happens when I call prstatus(vt), I put line

printf("[my debug] it's all ok until here (39)\r\n");

just before calling prstatus, then
printf("[my debug] it's all ok until here (40)\r\n");
as first instruction of prstatus.

I get segmentation fault just after printf("[my debug] it's all ok until here (39)\r\n");

I am newbie about OpenWrt, rtklib and cross compilation, so I have no idea about where could be the matter.
Any suggestion?
Thanks.