arm-none-eabi-ld: cannot find -lc

[ajaybolloju]

when i type 'make' and enter, following error appears

Dark Builder - Unified Build Environment
Version (1.0.0 - Armstrong)
[CC] [RaspberryPi BSP] port.o
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/portable/GCC/RaspberryPi/port.c: In function 'vTickISR':
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/portable/GCC/RaspberryPi/port.c:221:29: warning: unused parameter 'nIRQ' [-Wunused-parameter]
void vTickISR (unsigned int nIRQ, void *pParam)
^
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/portable/GCC/RaspberryPi/port.c:221:41: warning: unused parameter 'pParam' [-Wunused-parameter]
void vTickISR (unsigned int nIRQ, void *pParam)
^
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/portable/GCC/RaspberryPi/port.c: In function 'prvSetupTimerInterrupt':
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/portable/GCC/RaspberryPi/port.c:237:16: warning: variable 'ulCompareMatch' set but not used [-Wunused-but-set-variable]
unsigned long ulCompareMatch;
^
[CC] [RaspberryPi BSP] portisr.o
[CC] [RaspberryPi BSP] croutine.o
[CC] [RaspberryPi BSP] list.o
[CC] [RaspberryPi BSP] queue.o
[CC] [RaspberryPi BSP] tasks.o
[CC] [RaspberryPi BSP] irq.o
[CC] [RaspberryPi BSP] gpio.o
[CC] [RaspberryPi BSP] heap_4.o
[AS] [RaspberryPi BSP] startup.o
[CC] [RaspberryPi BSP] main.o
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c: In function 'task1':
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c:74:18: warning: unused parameter 'pParam' [-Wunused-parameter]
void task1(void *pParam) {
^
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c: In function 'task2':
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c:84:18: warning: unused parameter 'pParam' [-Wunused-parameter]
void task2(void *pParam) {
^
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c: At top level:
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c:102:6: warning: return type of 'main' is not 'int' [-Wmain]
void main (void)
^
In file included from /home/ajay/RaspberryPi-FreeRTOS/Demo/main.c:69:0:
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c: In function 'main':
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/include/task.h:284:134: warning: pointer targets in passing argument 2 of 'xTaskGenericCreate' differ in signedness [-Wpointer-sign]
#define xTaskCreate( pvTaskCode, pcName, usStackDepth, pvParameters, uxPriority, pxCreatedTask ) xTaskGenericCreate( ( pvTaskCode ), ( pcName ), ( usStackDepth ), ( pvParameters ), ( uxPriority ), ( pxCreatedTask ), ( NULL ), ( NULL ) )
^
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c:106:2: note: in expansion of macro 'xTaskCreate'
xTaskCreate(task1, "LED_0", 128, NULL, 0, NULL);
^
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/include/task.h:1282:22: note: expected 'const signed char * const' but argument is of type 'char *'
signed portBASE_TYPE xTaskGenericCreate( pdTASK_CODE pxTaskCode, const signed char * const pcName, unsigned short usStackDepth, void *pvParameters, unsigned portBASE_TYPE uxPriority, xTaskHandle *pxCreatedTask, portSTACK_TYPE *puxStackBuffer, const xMemoryRegion * const xRegions ) PRIVILEGED_FUNCTION;
^
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/include/task.h:284:134: warning: pointer targets in passing argument 2 of 'xTaskGenericCreate' differ in signedness [-Wpointer-sign]
#define xTaskCreate( pvTaskCode, pcName, usStackDepth, pvParameters, uxPriority, pxCreatedTask ) xTaskGenericCreate( ( pvTaskCode ), ( pcName ), ( usStackDepth ), ( pvParameters ), ( uxPriority ), ( pxCreatedTask ), ( NULL ), ( NULL ) )
^
/home/ajay/RaspberryPi-FreeRTOS/Demo/main.c:107:2: note: in expansion of macro 'xTaskCreate'
xTaskCreate(task2, "LED_1", 128, NULL, 0, NULL);
^
/home/ajay/RaspberryPi-FreeRTOS/FreeRTOS/Source/include/task.h:1282:22: note: expected 'const signed char * const' but argument is of type 'char *'
signed portBASE_TYPE xTaskGenericCreate( pdTASK_CODE pxTaskCode, const signed char * const pcName, unsigned short usStackDepth, void *pvParameters, unsigned portBASE_TYPE uxPriority, xTaskHandle *pxCreatedTask, portSTACK_TYPE *puxStackBuffer, const xMemoryRegion * const xRegions ) PRIVILEGED_FUNCTION;
^
arm-none-eabi-ld: cannot find -lc
Makefile:35: recipe for target 'kernel.elf' failed
make: *** [kernel.elf] Error 1

As you suggested, all the python files in .dbuild/pretty are executable and i modified the path of "LDFLAGS" valiable accordingly. Please help me resolve this error

[dashxdr]

Wow, this is an old project. I spent a bit of time trying to get it to build, using a cross compiler I got from ARM's site: https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
The file was arm-gnu-toolchain-13.2.rel1-x86_64-arm-none-eabi.tar.xz and I modified dbuild.config.mk's:

TOOLCHAIN=/ram/arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-eabi/bin/arm-none-eabi-
and Makefile:
kernel.elf: LDFLAGS += -L /ram/arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-eabi/lib/gcc/arm-none-eabi/13.2.1/ -lgcc
#kernel.elf: LDFLAGS += -lc

I got only missing references to memset, memcpy and strncpy so I just added these to
RaspberryPi-FreeRTOS/Demo/main.c just before main:

void *memset(void *s, int c, size_t n) {
char *cp = s;
while(n-->0) *cp++ = c;
return s;
}
void memcpy(void *dest, const void *src, size_t n) {
char *dp = dest, *sp = src;
while(n-->0) *dp++ = *sp++;
return dest;
}
char *strncpy(char *dest, const char *src, size_t n) {
int i;
for(i=0;i<n && src[i];++i) dest[i]=src[i];
if(i<n) dest[i]=0;
return dest;
}

I do "make Q=" in order to NOT hide the commands being executed. It ends up producing kernel.elf, kernel.img and kernel.syms. Not sure what to do with them.

[zhenggennj]

Please download the kernel.img to a SD card and insert it into a socket on RaspberryPi Model 1B. RaspberryPi will boot from the SD card. Please visit https://github.com/dwelch67/raspberrypi for details.