build: test on the Forerunner 70 only by default; ALL=1 for every device

Unit tests, perf, memory, lint builds, screenshots and the watchdog test
run on the owner's Forerunner 70 alone unless ALL=1 is given, which
keeps runs and screenshot reviews short (8 instead of 65 minutes for
the screenshots). make build defaults to the Forerunner 70 too.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 15 insertions, 5 deletions

diff --git a/Makefile b/Makefile
index 5cec7ba..d77125b 100644
--- a/Makefile
+++ b/Makefile
@@ -33,16 +33,26 @@ UV_VERSION     := 0.13.1
 # Connect IQ SDK installed by `make sdk`.
 SDK_VERSION  ?= 9.2.0
 # Device for `make build` and `make sim`.
-DEVICE       ?= fr255s
-# Simulator test devices: weakest round MIP (buttons only), rectangular AMOLED,
-# your Forerunner 70, and a large round AMOLED.
+DEVICE       ?= fr70
+# Test devices. By default only the owner's Forerunner 70: unit tests, perf,
+# memory, lint builds, screenshots and the watchdog test all run on it alone,
+# which keeps runs (and screenshot reviews) short. `make <target> ALL=1` uses
+# the full set below, for example before a release.
+ALL          ?=
+ifeq ($(ALL),1)
+# Weakest round MIP (buttons only), rectangular AMOLED, the Forerunner 70,
+# and a large round AMOLED.
 TEST_DEVICES ?= fr255s venusq2 fr70 fr965
 # Extra screenshot-only devices (README 14): MIP with touch and buttons,
 # buttons-only AMOLED, the largest rectangle.
 SPOT_DEVICES ?= fenix7 instinct3amoled45mm venux1
-# `make watchdog`: one device per watchdog class (120,000 and 240,000
-# bytecodes per event).
+# One device per watchdog class (120,000 and 240,000 bytecodes per event).
 WATCHDOG_DEVICES ?= fr255s fr70
+else
+TEST_DEVICES ?= fr70
+SPOT_DEVICES ?=
+WATCHDOG_DEVICES ?= fr70
+endif
 # `make lock` only uses package releases published before this moment.
 LOCK_CUTOFF  ?= 2026-10-01T00:00:00Z
 # Set to `nuke` to skip the confirmation prompt of `make nuke`.