diff options
Diffstat (limited to 'tmk_core/rules.mk')
| -rw-r--r-- | tmk_core/rules.mk | 70 |
1 files changed, 42 insertions, 28 deletions
diff --git a/tmk_core/rules.mk b/tmk_core/rules.mk index 5a629d1eb0..6767a8e4af 100644 --- a/tmk_core/rules.mk +++ b/tmk_core/rules.mk @@ -69,8 +69,11 @@ CSTANDARD = -std=gnu99 #CXXDEFS += -D__STDC_CONSTANT_MACROS #CXXDEFS += - - +# Speed up recompilations by opt-in usage of ccache +USE_CCACHE ?= no +ifneq ($(USE_CCACHE),no) + CC_PREFIX ?= ccache +endif #---------------- Compiler Options C ---------------- # -g*: generate debugging information @@ -78,7 +81,15 @@ CSTANDARD = -std=gnu99 # -f...: tuning, see GCC manual and avr-libc documentation # -Wall...: warning level # -Wa,...: tell GCC to pass this to the assembler. -# -adhlns...: create assembler listing +ifeq ($(strip $(LTO_ENABLE)), yes) + ifeq ($(PLATFORM),CHIBIOS) + $(info Enabling LTO on ChibiOS-targeting boards is known to have a high likelihood of failure.) + $(info If unsure, set LTO_ENABLE = no.) + endif + CDEFS += -flto + CDEFS += -DLTO_ENABLE +endif + DEBUG_ENABLE ?= yes ifeq ($(strip $(SKIP_DEBUG_INFO)),yes) DEBUG_ENABLE=no @@ -105,10 +116,6 @@ endif #CFLAGS += -Wundef #CFLAGS += -Wunreachable-code #CFLAGS += -Wsign-compare -GCC_VERSION := $(shell gcc --version 2>/dev/null) -ifeq ($(findstring clang, ${GCC_VERSION}),) -CFLAGS += -Wa,-adhlns=$(@:%.o=%.lst) -endif CFLAGS += $(CSTANDARD) # This fixes lots of keyboards linking errors but SHOULDN'T BE A FINAL SOLUTION @@ -121,7 +128,6 @@ CFLAGS += -fcommon # -f...: tuning, see GCC manual and avr-libc documentation # -Wall...: warning level # -Wa,...: tell GCC to pass this to the assembler. -# -adhlns...: create assembler listing ifeq ($(strip $(DEBUG_ENABLE)),yes) CXXFLAGS += -g$(DEBUG) endif @@ -140,28 +146,10 @@ endif #CXXFLAGS += -Wstrict-prototypes #CXXFLAGS += -Wunreachable-code #CXXFLAGS += -Wsign-compare -ifeq ($(findstring clang, ${GCC_VERSION}),) -CXXFLAGS += -Wa,-adhlns=$(@:%.o=%.lst) -endif #CXXFLAGS += $(CSTANDARD) #---------------- Assembler Options ---------------- -# -Wa,...: tell GCC to pass this to the assembler. -# -adhlns: create listing -# -gstabs: have the assembler create line number information; note that -# for use in COFF files, additional information about filenames -# and function names needs to be present in the assembler source -# files -- see avr-libc docs [FIXME: not yet described there] -# -listing-cont-lines: Sets the maximum number of continuation lines of hex -# dump that will be displayed for a given single line of source input. ASFLAGS += $(ADEFS) -ifeq ($(findstring clang, ${GCC_VERSION}),) -ifeq ($(strip $(DEBUG_ENABLE)),yes) - ASFLAGS += -Wa,-adhlns=$(@:%.o=%.lst),-gstabs,--listing-cont-lines=100 -else - ASFLAGS += -Wa,-adhlns=$(@:%.o=%.lst),--listing-cont-lines=100 -endif -endif ifeq ($(VERBOSE_AS_CMD),yes) ASFLAGS += -v endif @@ -218,6 +206,32 @@ LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB) # You can give EXTRALDFLAGS at 'make' command line. LDFLAGS += $(EXTRALDFLAGS) +#---------------- Assembler Listings ---------------- +# -Wa,...: tell GCC to pass this to the assembler. +# -adhlns: create listing +# -gstabs: have the assembler create line number information; note that +# for use in COFF files, additional information about filenames +# and function names needs to be present in the assembler source +# files -- see avr-libc docs [FIXME: not yet described there] +# -listing-cont-lines: Sets the maximum number of continuation lines of hex +# dump that will be displayed for a given single line of source input. + +ADHLNS_ENABLE ?= no +ifeq ($(ADHLNS_ENABLE),yes) + # Avoid "Options to '-Xassembler' do not match" - only specify assembler options at LTO link time + ifeq ($(strip $(LTO_ENABLE)), yes) + LDFLAGS += -Wa,-adhlns=$(BUILD_DIR)/$(TARGET).lst + else + CFLAGS += -Wa,-adhlns=$(@:%.o=%.lst) + CXXFLAGS += -Wa,-adhlns=$(@:%.o=%.lst) + ifeq ($(strip $(DEBUG_ENABLE)),yes) + ASFLAGS = -Wa,-adhlns=$(@:%.o=%.lst),-gstabs,--listing-cont-lines=100 + else + ASFLAGS = -Wa,-adhlns=$(@:%.o=%.lst),--listing-cont-lines=100 + endif + endif +endif + # Define programs and commands. SHELL = sh REMOVE = rm -f @@ -347,7 +361,7 @@ BEGIN = gccversion sizebefore # Note the obj.txt depeendency is there to force linking if a source file is deleted %.elf: $(OBJ) $(MASTER_OUTPUT)/cflags.txt $(MASTER_OUTPUT)/ldflags.txt $(MASTER_OUTPUT)/obj.txt | $(BEGIN) @$(SILENT) || printf "$(MSG_LINKING) $@" | $(AWK_CMD) - $(eval CMD=$(CC) $(ALL_CFLAGS) $(filter-out %.txt,$^) --output $@ $(LDFLAGS)) + $(eval CMD=MAKE=$(MAKE) $(CC) $(ALL_CFLAGS) $(filter-out %.txt,$^) --output $@ $(LDFLAGS)) @$(BUILD_CMD) @@ -465,7 +479,7 @@ ifeq ($(findstring avr-gcc,$(CC)),avr-gcc) SIZE_MARGIN = 1024 check-size: - $(eval MAX_SIZE=$(shell n=`$(CC) -E -mmcu=$(MCU) -D__ASSEMBLER__ $(CFLAGS) $(OPT_DEFS) tmk_core/common/avr/bootloader_size.c 2> /dev/null | sed -ne 's/\r//;/^#/n;/^AVR_SIZE:/,$${s/^AVR_SIZE: //;p;}'` && echo $$(($$n)) || echo 0)) + $(eval MAX_SIZE=$(shell n=`$(CC) -E -mmcu=$(MCU) -D__ASSEMBLER__ $(CFLAGS) $(OPT_DEFS) platforms/avr/bootloader_size.c 2> /dev/null | sed -ne 's/\r//;/^#/n;/^AVR_SIZE:/,$${s/^AVR_SIZE: //;p;}'` && echo $$(($$n)) || echo 0)) $(eval CURRENT_SIZE=$(shell if [ -f $(BUILD_DIR)/$(TARGET).hex ]; then $(SIZE) --target=$(FORMAT) $(BUILD_DIR)/$(TARGET).hex | $(AWK) 'NR==2 {print $$4}'; else printf 0; fi)) $(eval FREE_SIZE=$(shell expr $(MAX_SIZE) - $(CURRENT_SIZE))) $(eval OVER_SIZE=$(shell expr $(CURRENT_SIZE) - $(MAX_SIZE))) |