fixup! build(core): allow exporting Rust functions' stack sizes

core/Makefile

@@ -45,7 +45,6 @@ QUIET_MODE ?= 0
 TREZOR_DISABLE_ANIMATION ?= $(if $(filter 0,$(PYOPT)),1,0)
 STORAGE_INSECURE_TESTING_MODE ?= 0
 RUST_PRINT_TYPES_SIZES ?= 0
-RUST_EMIT_STACK_SIZES ?= 0
 
 # OpenOCD interface default. Alternative: ftdi/olimex-arm-usb-tiny-h
 OPENOCD_INTERFACE ?= stlink
@@ -125,7 +124,6 @@ SCONS_VARS = \
 	PYOPT="$(PYOPT)" \
 	QUIET_MODE="$(QUIET_MODE)" \
 	RUST_PRINT_TYPES_SIZES="$(RUST_PRINT_TYPES_SIZES)" \
-	RUST_EMIT_STACK_SIZES="$(RUST_EMIT_STACK_SIZES)" \
 	SCM_REVISION="$(SCM_REVISION)" \
 	STORAGE_INSECURE_TESTING_MODE="$(STORAGE_INSECURE_TESTING_MODE)" \
 	THP="$(THP)" \

core/SConscript.firmware

@@ -794,11 +794,11 @@ def cargo_build():
         # see https://nnethercote.github.io/perf-book/type-sizes.html#measuring-type-sizes for more details
         env.Append(ENV={'RUSTFLAGS': '-Z print-type-sizes'})
 
-    if ARGUMENTS.get('RUST_EMIT_STACK_SIZES', '0') == '1':
-        # see the following links for more details:
-        # - https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/emit-stack-sizes.html
-        # - https://blog.japaric.io/stack-analysis/
-        env.Append(ENV={'RUSTFLAGS': '-Z emit-stack-sizes'})
+    # Adds an ELF section with Rust functions' stack sizes. See the following links for more details:
+    # - https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/emit-stack-sizes.html
+    # - https://blog.japaric.io/stack-analysis/
+    # - https://github.com/japaric/stack-sizes/
+    env.Append(ENV={'RUSTFLAGS': '-Z emit-stack-sizes'})
 
     bindgen_macros = tools.get_bindgen_defines(env.get("CPPDEFINES"), ALLPATHS)
     build_dir = str(Dir('.').abspath)