A BUG when generate code for toolchain `makefile` or `cmake`.
My develop environment: Linux PC
After generated code, I run `make` and got errors:
```
/usr/lib/gcc/arm-none-eabi/7.3.1/../../../arm-none-eabi/bin/ld:STM32F103C8Tx_FLASH.ld:56: syntax error
collect2: error: ld returned 1 exit status
```
After my investigation, I found that the reason was that all the RAM symbols in this file were replaced with empty!
For example:
Line 56: _estack = ORIGIN() + LENGTH(); /* end of RAM */
Should be: _estack = ORIGIN(RAM) + LENGTH(RAM); /* end of RAM */
Line 146: } > AT> FLASH
Should be: } >RAM AT> FLASH
Here is the patch will fix the BUG:
diff --git a/STM32F103C8Tx_FLASH.ld b/STM32F103C8Tx_FLASH.ld
index 42d7927..05df42a 100644
--- a/STM32F103C8Tx_FLASH.ld
+++ b/STM32F103C8Tx_FLASH.ld
@@ -53,7 +53,7 @@
ENTRY(Reset_Handler)
/* Highest address of the user mode stack */
-_estack = ORIGIN() + LENGTH(); /* end of RAM */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of RAM */
/* Generate a link error if heap and stack don't fit into RAM */
_Min_Heap_Size = 0x200; /* required amount of heap */
_Min_Stack_Size = 0x400; /* required amount of stack */
@@ -143,7 +143,7 @@ SECTIONS
. = ALIGN(4);
_edata = .; /* define a global symbol at data end */
- } > AT> FLASH
+ } >RAM AT> FLASH
/* Uninitialized data section */
@@ -160,7 +160,7 @@ SECTIONS
. = ALIGN(4);
_ebss = .; /* define a global symbol at bss end */
__bss_end__ = _ebss;
- } >
+ } >RAM
/* User_heap_stack section, used to check that there is enough RAM left */
._user_heap_stack :
@@ -171,7 +171,7 @@ SECTIONS
. = . + _Min_Heap_Size;
. = . + _Min_Stack_Size;
. = ALIGN(8);
- } >
+ } >RAM
@@ -184,5 +184,3 @@ SECTIONS
}
}
