diff options
Diffstat (limited to 'builddefs/common_rules.mk')
| -rw-r--r-- | builddefs/common_rules.mk | 117 |
1 files changed, 10 insertions, 107 deletions
diff --git a/builddefs/common_rules.mk b/builddefs/common_rules.mk index d3acddc87b..6573257c78 100644 --- a/builddefs/common_rules.mk +++ b/builddefs/common_rules.mk @@ -1,19 +1,5 @@ # Hey Emacs, this is a -*- makefile -*- #---------------------------------------------------------------------------- -# WinAVR Makefile Template written by Eric B. Weddington, Jg Wunsch, et al. -# -# Released to the Public Domain -# -# Additional material for this makefile was written by: -# Peter Fleury -# Tim Henigan -# Colin O'Flynn -# Reiner Patommel -# Markus Pfaff -# Sander Pool -# Frederik Rouleau -# Carlos Lamas -# # Enable vpath seraching for source files only # Without this, output files, could be read from the wrong .build directories @@ -38,36 +24,15 @@ NO_LTO_OBJ := $(filter %.a,$(OBJ)) MASTER_OUTPUT := $(firstword $(OUTPUTS)) - - # Output format. (can be srec, ihex, binary) FORMAT = ihex # Optimization level, can be [0, 1, 2, 3, s]. -# 0 = turn off optimization. s = optimize for size. -# (Note: 3 is not always the best optimization level. See avr-libc FAQ.) OPT ?= s -# Compiler flag to set the C Standard level. -# c89 = "ANSI" C -# gnu89 = c89 plus GCC extensions -# c99 = ISO C99 standard (not yet fully implemented) -# gnu99 = c99 plus GCC extensions -CSTANDARD = -std=gnu99 - - -# Place -D or -U options here for C sources -#CDEFS += - - -# Place -D or -U options here for ASM sources -#ADEFS += - - -# Place -D or -U options here for C++ sources -#CXXDEFS += -D__STDC_LIMIT_MACROS -#CXXDEFS += -D__STDC_CONSTANT_MACROS -#CXXDEFS += +# Compiler flag to set the C and C++ language standard level +CSTANDARD = -std=gnu11 +CXXSTANDARD = -std=gnu++14 # Speed up recompilations by opt-in usage of ccache USE_CCACHE ?= no @@ -75,12 +40,8 @@ ifneq ($(USE_CCACHE),no) CC_PREFIX ?= ccache endif -#---------------- Compiler Options C ---------------- -# -g*: generate debugging information -# -O*: optimization level -# -f...: tuning, see GCC manual and avr-libc documentation -# -Wall...: warning level -# -Wa,...: tell GCC to pass this to the assembler. +#---------------- C Compiler Options ---------------- + ifeq ($(strip $(LTO_ENABLE)), yes) ifeq ($(PLATFORM),ARM_ATSAM) $(info Enabling LTO on arm_atsam-targeting boards is known to have a high likelihood of failure.) @@ -111,23 +72,14 @@ CFLAGS += -Wstrict-prototypes ifneq ($(strip $(ALLOW_WARNINGS)), yes) CFLAGS += -Werror endif -#CFLAGS += -mshort-calls -#CFLAGS += -fno-unit-at-a-time -#CFLAGS += -Wundef -#CFLAGS += -Wunreachable-code -#CFLAGS += -Wsign-compare CFLAGS += $(CSTANDARD) # This fixes lots of keyboards linking errors but SHOULDN'T BE A FINAL SOLUTION # Fixing of multiple variable definitions must be made. CFLAGS += -fcommon -#---------------- Compiler Options C++ ---------------- -# -g*: generate debugging information -# -O*: optimization level -# -f...: tuning, see GCC manual and avr-libc documentation -# -Wall...: warning level -# -Wa,...: tell GCC to pass this to the assembler. +#---------------- C++ Compiler Options ---------------- + ifeq ($(strip $(DEBUG_ENABLE)),yes) CXXFLAGS += -g$(DEBUG) endif @@ -141,57 +93,17 @@ CXXFLAGS += -Wundef ifneq ($(strip $(ALLOW_WARNINGS)), yes) CXXFLAGS += -Werror endif -#CXXFLAGS += -mshort-calls -#CXXFLAGS += -fno-unit-at-a-time -#CXXFLAGS += -Wstrict-prototypes -#CXXFLAGS += -Wunreachable-code -#CXXFLAGS += -Wsign-compare -#CXXFLAGS += $(CSTANDARD) #---------------- Assembler Options ---------------- + ASFLAGS += $(ADEFS) ifeq ($(VERBOSE_AS_CMD),yes) ASFLAGS += -v endif -#---------------- Library Options ---------------- -# Minimalistic printf version -PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min - -# Floating point printf version (requires MATH_LIB = -lm below) -PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt - -# If this is left blank, then it will use the Standard printf version. -PRINTF_LIB = -#PRINTF_LIB = $(PRINTF_LIB_MIN) -#PRINTF_LIB = $(PRINTF_LIB_FLOAT) - - -# Minimalistic scanf version -SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min - -# Floating point + %[ scanf version (requires MATH_LIB = -lm below) -SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt - -# If this is left blank, then it will use the Standard scanf version. -SCANF_LIB = -#SCANF_LIB = $(SCANF_LIB_MIN) -#SCANF_LIB = $(SCANF_LIB_FLOAT) - - -MATH_LIB = -lm -CREATE_MAP ?= yes - - #---------------- Linker Options ---------------- -# -Wl,...: tell GCC to pass this to linker. -# -Map: create map file -# --cref: add cross reference to map file -# -# Comennt out "--relax" option to avoid a error such: -# (.vectors+0x30): relocation truncated to fit: R_AVR_13_PCREL against symbol `__vector_12' -# +CREATE_MAP ?= yes ifeq ($(CREATE_MAP),yes) LDFLAGS += -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref endif @@ -201,20 +113,11 @@ endif #LDFLAGS += -Wl,--relax LDFLAGS += $(EXTMEMOPTS) LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS)) -LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB) -#LDFLAGS += -T linker_script.x +LDFLAGS += -lm # 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) |