Linker scripts: remove malformed DISCARD block that pulled in full newlib

CHANGELOG.md

@@ -6,6 +6,10 @@
 
 - TCA9534: Added I2C GPIO expander driver (`src/dev/tca9534.h`) with shared-bus and owned-bus init, plus `TCA9534_GPIO` example.
 
+### Bug Fixes
+
+- Linker scripts: removed a malformed `DISCARD` section that loaded full newlib's `libc.a` into every link. CMake builds now link newlib-nano only; the Makefile build is byte-identical.
+
 ## v8.1.0
 
 ### Features

core/STM32H750IB_flash.lds

@@ -257,12 +257,5 @@ SECTIONS
 		PROVIDE(__reserved_for_stack_end__ = .);
 	} > SRAM
 
-    DISCARD :
-    {
-        libc.a ( * )
-        libm.a ( * )
-        libgcc.a ( * )
-    }
-
 }
 

core/STM32H750IB_qspi.lds

@@ -260,11 +260,4 @@ SECTIONS
 		PROVIDE(__reserved_for_stack_end__ = .);
 	} > DTCMRAM
 
-    DISCARD :
-    {
-        libc.a ( * )
-        libm.a ( * )
-        libgcc.a ( * )
-    }
-
 }

core/STM32H750IB_sram.lds

@@ -258,11 +258,4 @@ SECTIONS
 		PROVIDE(__reserved_for_stack_end__ = .);
 	} > DTCMRAM
 
-    DISCARD :
-    {
-        libc.a ( * )
-        libm.a ( * )
-        libgcc.a ( * )
-    }
-
 }