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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32


You are viewing a reply to sprintf / _sbrk make error  

sprintf / _sbrk make error

Hi Tarek,
The semihosting was working in my application while the syscall.c file is exclude from build and in using the linker miscellaneous flags :
-specs=nosys.specs -specs=nano.specs -specs=rdimon.specs -lc -lrdimon
I tried the solution you proposed but it generates link errors.
Here are my steps :
- I removed the linker miscellaneous flags;
- I restore the syscall.c file (it was excluded from build);
Clean + Build but I get the following link errors :

../src/syscalls.c:63:27: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'asm'
register char * stack_ptr asm("sp");
 
../src/syscalls.c: In function '_sbrk':
../src/syscalls.c:116:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'asm'
  extern char end asm("end");
 
../src/syscalls.c:116:18: warning: implicit declaration of function 'asm' [-Wimplicit-function-declaration]
../src/syscalls.c:121:15: error: 'end' undeclared (first use in this function)
   heap_end = &end;
 
../src/syscalls.c:121:15: note: each undeclared identifier is reported only once for each function it appears in
../src/syscalls.c:124:24: error: 'stack_ptr' undeclared (first use in this function)
  if (heap_end + incr > stack_ptr)
 
make: *** [src/syscalls.o] Error 1


After several trials, I noticed that these errors were linked to the C99 standard.
All errors vanished when C Dialect option is empty unfortunately, the semihosting is not functional :
nothing is displayed in OpenOCD tab.

What is missing?
Thank you for helping