From d44e94c537a45624ec8df9999aad83c00e049541 Mon Sep 17 00:00:00 2001
From: nerdCopter <56646290+nerdCopter@users.noreply.github.com>
Date: Fri, 24 Jul 2026 16:54:21 -0500
Subject: [PATCH] build: expand SIZE_OPTIMISED_SRC to init/config/telemetry
 paths

Adds 41 files to SIZE_OPTIMISED_SRC in make/source.mk, forcing -Os
instead of default optimization on cold paths not on the gyro/PID
control loop: flash drivers (5), telemetry protocols (12), GPS/
gps_rescue/position (3), rangefinder (3), sensor init (3), display/
IO drivers (10), CMS menus (2), esc_sensor/camera_control/vtx_beesign
(3). Build-flag-only change, no source logic modified.

Files verified present at listed paths in upstream/master @ 7651c15373
(not the issue's original file list, since master may have moved
files since filing). Task-rate check in fc/fc_tasks.c confirms
TASK_GPS (100Hz), TASK_ALTITUDE (40Hz), TASK_TELEMETRY (250Hz
polling) are all below the gyro/PID hot loop.

Measured flash delta (arm-none-eabi-size, xpack GCC 9.3.1) vs
upstream/master:
- HELIOSPRING: -8293 B
- TMOTORF7: -7868 B
- MATEKF411: -6692 B
- WORMFC: -7457 B
RAM flat (+/-50 B).

make clean && CCACHE_DISABLE=1 make test: 39/39 unit test binaries
PASS, 0 warnings, 0 errors. Bench targets (HELIOSPRING TUNERCF405
SKYSTARSF405AIO PYRODRONEF7 FOXEERF722V4 FOXEERF405 APEXF7 TMOTORF7):
8/8 succeeded. Compile-only targets (MATEKF411 NBDHMBF4PRO WORMFC
ALIENWHOOPF7 CRAZYFLIE2): 5/5 succeeded. Zero warnings/errors across
both sets under CCACHE_DISABLE=1.

Closes #1221

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
---
 make/source.mk | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/make/source.mk b/make/source.mk
index c71cdc11bf..a98a1b250d 100644
--- a/make/source.mk
+++ b/make/source.mk
@@ -321,6 +321,51 @@ SIZE_OPTIMISED_SRC := $(SIZE_OPTIMISED_SRC) \
             io/spektrum_vtx_control.c \
             pg/pg.h
 
+# Init/config/telemetry paths not on the main control loop (issue #1221)
+SIZE_OPTIMISED_SRC := $(SIZE_OPTIMISED_SRC) \
+            drivers/flash.c \
+            drivers/flash_m25p16.c \
+            drivers/flash_w25m.c \
+            drivers/flash_w25n.c \
+            drivers/flash_w25q128fv.c \
+            telemetry/telemetry.c \
+            telemetry/crsf.c \
+            telemetry/ghst.c \
+            telemetry/srxl.c \
+            telemetry/frsky_hub.c \
+            telemetry/hott.c \
+            telemetry/jetiexbus.c \
+            telemetry/smartport.c \
+            telemetry/ltm.c \
+            telemetry/mavlink.c \
+            telemetry/msp_shared.c \
+            telemetry/ibus.c \
+            telemetry/ibus_shared.c \
+            io/gps.c \
+            flight/gps_rescue.c \
+            flight/position.c \
+            drivers/rangefinder/rangefinder_hcsr04.c \
+            drivers/rangefinder/rangefinder_lidartf.c \
+            sensors/rangefinder.c \
+            sensors/initialisation.c \
+            sensors/barometer.c \
+            sensors/compass.c \
+            io/ledstrip.c \
+            io/pidaudio.c \
+            io/rcdevice.c \
+            io/rcdevice_cam.c \
+            io/displayport_max7456.c \
+            io/displayport_msp.c \
+            io/displayport_hdzero_osd.c \
+            io/displayport_oled.c \
+            io/displayport_srxl.c \
+            io/displayport_crsf.c \
+            cms/cms_menu_failsafe.c \
+            cms/cms_menu_gps_rescue.c \
+            sensors/esc_sensor.c \
+            drivers/camera_control.c \
+            io/vtx_beesign.c
+
 # F4 and F7 optimizations
 ifneq ($(TARGET),$(filter $(TARGET),$(F3_TARGETS)))
 SPEED_OPTIMISED_SRC := $(SPEED_OPTIMISED_SRC) \