From 87f4b337dcc0fd39ebc40e498db0b457fea3d0b1 Mon Sep 17 00:00:00 2001
From: Drashna Jaelre <drashna@live.com>
Date: Tue, 9 Jul 2019 07:57:14 -0700
Subject: [PATCH] Use QUANTUM_LIB_SRC for i2c_master.c inclusion (#5617)

Using QUANTUM_LIB_SRC prevents the warning when multiple sources add the i2c_master.c file. Boards such as the Ergodox EZ Glow see this warning every time they compile because the board uses the file in general, and because the RGB LED Matrix requires it, as well.
---
 common_features.mk            | 10 +++++-----
 drivers/qwiic/qwiic.mk        |  4 +---
 keyboards/ergodox_ez/rules.mk |  6 +-----
 keyboards/model01/rules.mk    |  4 ++--
 4 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/common_features.mk b/common_features.mk
index 7c35f07d52c9..3296424a11eb 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -133,7 +133,7 @@ ifeq ($(strip $(LED_MATRIX_ENABLE)), IS31FL3731)
     OPT_DEFS += -DIS31FL3731
     COMMON_VPATH += $(DRIVER_PATH)/issi
     SRC += is31fl3731-simple.c
-    SRC += i2c_master.c
+    QUANTUM_LIB_SRC += i2c_master.c
 endif
 
 RGB_MATRIX_ENABLE ?= no
@@ -157,21 +157,21 @@ ifeq ($(strip $(RGB_MATRIX_ENABLE)), IS31FL3731)
     OPT_DEFS += -DIS31FL3731 -DSTM32_I2C -DHAL_USE_I2C=TRUE
     COMMON_VPATH += $(DRIVER_PATH)/issi
     SRC += is31fl3731.c
-    SRC += i2c_master.c
+    QUANTUM_LIB_SRC += i2c_master.c
 endif
 
 ifeq ($(strip $(RGB_MATRIX_ENABLE)), IS31FL3733)
     OPT_DEFS += -DIS31FL3733 -DSTM32_I2C -DHAL_USE_I2C=TRUE
     COMMON_VPATH += $(DRIVER_PATH)/issi
     SRC += is31fl3733.c
-    SRC += i2c_master.c
+    QUANTUM_LIB_SRC += i2c_master.c
 endif
 
 ifeq ($(strip $(RGB_MATRIX_ENABLE)), IS31FL3737)
     OPT_DEFS += -DIS31FL3737 -DSTM32_I2C -DHAL_USE_I2C=TRUE
     COMMON_VPATH += $(DRIVER_PATH)/issi
     SRC += is31fl3737.c
-    SRC += i2c_master.c
+    QUANTUM_LIB_SRC += i2c_master.c
 endif
 
 ifeq ($(strip $(RGB_MATRIX_ENABLE)), WS2812)
@@ -271,7 +271,7 @@ ifeq ($(strip $(HAPTIC_ENABLE)), DRV2605L)
     COMMON_VPATH += $(DRIVER_PATH)/haptic
     SRC += haptic.c
     SRC += DRV2605L.c
-    SRC += i2c_master.c
+    QUANTUM_LIB_SRC += i2c_master.c
     OPT_DEFS += -DHAPTIC_ENABLE
     OPT_DEFS += -DDRV2605L
 endif
diff --git a/drivers/qwiic/qwiic.mk b/drivers/qwiic/qwiic.mk
index 4ae2d78e3e7b..b23c25657de2 100644
--- a/drivers/qwiic/qwiic.mk
+++ b/drivers/qwiic/qwiic.mk
@@ -2,9 +2,7 @@ ifneq ($(strip $(QWIIC_ENABLE)),)
   COMMON_VPATH += $(DRIVER_PATH)/qwiic
   OPT_DEFS += -DQWIIC_ENABLE
   SRC += qwiic.c
-  ifeq ($(filter "i2c_master.c", $(SRC)),)
-    SRC += i2c_master.c
-  endif
+  QUANTUM_LIB_SRC += i2c_master.c
 endif
 
 ifneq ($(filter JOYSTIIC, $(QWIIC_ENABLE)),)
diff --git a/keyboards/ergodox_ez/rules.mk b/keyboards/ergodox_ez/rules.mk
index e96cd20825c3..2882072a627d 100644
--- a/keyboards/ergodox_ez/rules.mk
+++ b/keyboards/ergodox_ez/rules.mk
@@ -16,6 +16,7 @@
 
 # # project specific files
 SRC += matrix.c
+QUANTUM_LIB_SRC += i2c_master.c
 
 # MCU name
 MCU = atmega32u4
@@ -85,9 +86,4 @@ RGBLIGHT_ENABLE = yes
 RGB_MATRIX_ENABLE = no # enable later
 DEBOUNCE_TYPE = eager_pr
 
-ifeq ($(strip $(RGB_MATRIX_ENABLE)), no)
-  SRC += i2c_master.c
-endif
-
-
 LAYOUTS = ergodox
diff --git a/keyboards/model01/rules.mk b/keyboards/model01/rules.mk
index 49ab981d148c..4345027f4178 100644
--- a/keyboards/model01/rules.mk
+++ b/keyboards/model01/rules.mk
@@ -1,5 +1,5 @@
-SRC += i2c_master.c \
-	   leds.c \
+QUANTUM_LIB_SRC += i2c_master.c
+SRC += leds.c \
 	   matrix.c
 
 # MCU name