Use nano specs (#8270)

* Enable syscalls all the time

* fix whitespace

docs/breaking_changes.md

@@ -6,20 +6,21 @@ The breaking change period is when we will merge PR's that change QMK in dangero
 
 ## What has been included in past Breaking Changes?
 
+* [2020 Feb 29](ChangeLog/20200229.md)
 * [2019 Aug 30](ChangeLog/20190830.md)
 
 ## When is the next Breaking Change?
 
-The next Breaking Change is scheduled for February 29, 2020.
+The next Breaking Change is scheduled for May 30, 2020.
 
 ### Important Dates
 
-* [x] 2019 Sep 21 - `future` is created. It will be rebased weekly.
-* [x] 2020 Feb 1 - `future` closed to new PR's.
-* [x] 2020 Feb 1 - Call for testers.
-* [x] 2020 Feb 27 - `master` is locked, no PR's merged.
-* [ ] 2020 Feb 29 - Merge `future` to `master`.
-* [ ] 2020 Feb 29 - `master` is unlocked. PR's can be merged again.
+* [x] 2019 Feb 29 - `future` is created. It will be rebased weekly.
+* [ ] 2020 May 2 - `future` closed to new PR's.
+* [ ] 2020 May 2 - Call for testers.
+* [ ] 2020 May 28 - `master` is locked, no PR's merged.
+* [ ] 2020 May 30 - Merge `future` to `master`.
+* [ ] 2020 May 30 - `master` is unlocked. PR's can be merged again.
 
 ## What changes will be included?
 

readme.md

@@ -7,12 +7,6 @@
 [![GitHub contributors](https://img.shields.io/github/contributors/qmk/qmk_firmware.svg)](https://github.com/qmk/qmk_firmware/pulse/monthly)
 [![GitHub forks](https://img.shields.io/github/forks/qmk/qmk_firmware.svg?style=social&label=Fork)](https://github.com/qmk/qmk_firmware/)
 
-# THIS IS THE FUTURE BRANCH
-
-Warning- This is the `future` branch of QMK Firmware. You may encounter broken code here. Please see [Breaking Changes](https://docs.qmk.fm/#/breaking_changes) for more information.
-
-# Original readme continues
-
 This is a keyboard firmware based on the [tmk\_keyboard firmware](https://github.com/tmk/tmk_keyboard) with some useful features for Atmel AVR and ARM controllers, and more specifically, the [OLKB product line](https://olkb.com), the [ErgoDox EZ](https://ergodox-ez.com) keyboard, and the [Clueboard product line](https://clueboard.co).
 
 ## Documentation

tmk_core/chibios.mk

@@ -124,7 +124,8 @@ CHIBISRC = $(STARTUPSRC) \
        $(PLATFORMSRC) \
        $(PLATFORMSRC_CONTRIB) \
        $(BOARDSRC) \
-       $(STREAMSSRC)
+       $(STREAMSSRC) \
+       $(CHIBIOS)/os/various/syscalls.c
 
 # Ensure the ASM files are not subjected to LTO -- it'll strip out interrupt handlers otherwise.
 QUANTUM_LIB_SRC += $(STARTUPASM) $(PORTASM) $(OSALASM)
@@ -179,6 +180,7 @@ LDFLAGS += -mno-thumb-interwork -mthumb
 LDSYMBOLS =,--defsym=__process_stack_size__=$(USE_PROCESS_STACKSIZE)
 LDSYMBOLS :=$(LDSYMBOLS),--defsym=__main_stack_size__=$(USE_EXCEPTIONS_STACKSIZE)
 LDFLAGS += -Wl,--script=$(LDSCRIPT)$(LDSYMBOLS)
+LDFLAGS += --specs=nano.specs
 
 OPT_DEFS += -DPROTOCOL_CHIBIOS
 

tmk_core/common.mk

@@ -27,22 +27,12 @@ TMK_COMMON_SRC +=	$(COMMON_DIR)/host.c \
 
 ifeq ($(PLATFORM),AVR)
   TMK_COMMON_SRC += $(PLATFORM_COMMON_DIR)/xprintf.S
-endif
-
-ifeq ($(PLATFORM),CHIBIOS)
+else ifeq ($(PLATFORM),CHIBIOS)
   TMK_COMMON_SRC += $(PLATFORM_COMMON_DIR)/printf.c
-  ifeq ($(strip $(AUTO_SHIFT_ENABLE)), yes)
-    TMK_COMMON_SRC += $(CHIBIOS)/os/various/syscalls.c
-  else ifeq ($(strip $(TERMINAL_ENABLE)), yes)
-    TMK_COMMON_SRC += $(CHIBIOS)/os/various/syscalls.c
-  endif
-endif
-
-ifeq ($(PLATFORM),ARM_ATSAM)
+else ifeq ($(PLATFORM),ARM_ATSAM)
   TMK_COMMON_SRC += $(PLATFORM_COMMON_DIR)/printf.c
 endif
 
-
 # Option modules
 BOOTMAGIC_ENABLE ?= no
 VALID_MAGIC_TYPES := yes full lite