lpcxpresso55s16 zephyr undefined reference to `__aeabi_d2iz'

[Aravinthkalai]

Hello Everyone !

I'm using lpcxpresso55s16 Eval Board with zephyr stack, I just created a thread which calling one function , In that function I'm performing some floating point calculation based on the result I'm incrementing the static variable when I try to compile it's compiling but in linker stage it's throwing error like undefined reference to `__aeabi_d2iz', I'm struggling to fix this issue , if you have any suggestion or solution please reply to this query.

Details :

board : lpcxpresso55s16

stack : zephyr 3.3.99
//File Name : abc.c
#include <kernel.h>
#include <def.h>
static struct k_thread handler_thread_data;

K_THREAD_STACK_DEFINE(handler_thread_stack,0X400);

void create_thread()
{

task_tid = k_thread_create(&handler_thread_data,handler_thread_stack,K_THREAD_STACK_SIZEOF(handler_thread_stack),handler_thread,NULL,NULL,NULL,2,0,K_FOREVER);
if(!task_tid)
{
return task_init_failed;
}
k_thread_name_set(task_tid,"data_task");
initialized = true;
}

void handler_thread(void *arg1,void *arg2, void *arg3)
{

for(;;)
{

    calc();
        k_msleep(50);
}

}

//Filename : def.c
#include <def.h>
static double c=8.725;
static uint16_t inc=0;
void calc()
{

double a;
long b;
a=10.5;
b= (long)(a * c);  // compiler pointing this line and says undefined reference to `__aeabi_d2iz'

if (b > 40) 
{
      inc++;
}	
if(inc>1000)
{
    inc=0;
} 

}
``

[DerekSnell]

Sorry @Aravinthkalai , I don't see the issue.

I modified the hello_world sample with the attached main.c using your code snippets, and it builds without errors for me. I am using the latest main branch (commit dd8a65c).

I see that __aeabi_d2iz converts a double to an int. If this is missing in your build, it means the linker is not including it from the runtime library for some reason. Are you setting CONFIG_FPU? I have had issues in the past with missing floating point APIs, and it was related to the Floating point ABI, which can be configured with Kconfigs. Maybe that will help.

Let us know what you find

[Aravinthkalai]

@DerekSnell Thanks for your reply, actually this is not my actual code , I mocked my code and shared here , my issue is solved , I wrote the long calculation in a single line , now I split the long calculation in line by line and did proper type casting now it's works fine for me, once again thank you for your reply.