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https://github.com/qmk/qmk_firmware.git
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[Core] Update C standard to GNU11, C++ to GNU++14 (#17114)
This commit is contained in:
Stefan Kerkmann
GitHub
parent
6221c86186
commit
e89478eb0f
@ -1,19 +1,5 @@
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# Hey Emacs, this is a -*- makefile -*-
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#----------------------------------------------------------------------------
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# WinAVR Makefile Template written by Eric B. Weddington, Jg Wunsch, et al.
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#
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# Released to the Public Domain
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#
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# Additional material for this makefile was written by:
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# Peter Fleury
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# Tim Henigan
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# Colin O'Flynn
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# Reiner Patommel
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# Markus Pfaff
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# Sander Pool
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# Frederik Rouleau
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# Carlos Lamas
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#
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# Enable vpath seraching for source files only
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# Without this, output files, could be read from the wrong .build directories
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@ -38,36 +24,15 @@ NO_LTO_OBJ := $(filter %.a,$(OBJ))
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MASTER_OUTPUT := $(firstword $(OUTPUTS))
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# Output format. (can be srec, ihex, binary)
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FORMAT = ihex
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# Optimization level, can be [0, 1, 2, 3, s].
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# 0 = turn off optimization. s = optimize for size.
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# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
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OPT ?= s
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# Compiler flag to set the C Standard level.
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# c89 = "ANSI" C
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# gnu89 = c89 plus GCC extensions
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# c99 = ISO C99 standard (not yet fully implemented)
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# gnu99 = c99 plus GCC extensions
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CSTANDARD = -std=gnu99
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# Place -D or -U options here for C sources
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#CDEFS +=
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# Place -D or -U options here for ASM sources
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#ADEFS +=
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# Place -D or -U options here for C++ sources
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#CXXDEFS += -D__STDC_LIMIT_MACROS
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#CXXDEFS += -D__STDC_CONSTANT_MACROS
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#CXXDEFS +=
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# Compiler flag to set the C and C++ language standard level
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CSTANDARD = -std=gnu11
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CXXSTANDARD = -std=gnu++14
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# Speed up recompilations by opt-in usage of ccache
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USE_CCACHE ?= no
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@ -75,12 +40,8 @@ ifneq ($(USE_CCACHE),no)
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CC_PREFIX ?= ccache
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endif
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#---------------- Compiler Options C ----------------
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# -g*: generate debugging information
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# -O*: optimization level
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# -f...: tuning, see GCC manual and avr-libc documentation
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# -Wall...: warning level
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# -Wa,...: tell GCC to pass this to the assembler.
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#---------------- C Compiler Options ----------------
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ifeq ($(strip $(LTO_ENABLE)), yes)
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ifeq ($(PLATFORM),ARM_ATSAM)
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$(info Enabling LTO on arm_atsam-targeting boards is known to have a high likelihood of failure.)
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@ -111,23 +72,14 @@ CFLAGS += -Wstrict-prototypes
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ifneq ($(strip $(ALLOW_WARNINGS)), yes)
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CFLAGS += -Werror
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endif
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#CFLAGS += -mshort-calls
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#CFLAGS += -fno-unit-at-a-time
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#CFLAGS += -Wundef
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#CFLAGS += -Wunreachable-code
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#CFLAGS += -Wsign-compare
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CFLAGS += $(CSTANDARD)
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# This fixes lots of keyboards linking errors but SHOULDN'T BE A FINAL SOLUTION
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# Fixing of multiple variable definitions must be made.
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CFLAGS += -fcommon
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#---------------- Compiler Options C++ ----------------
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# -g*: generate debugging information
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# -O*: optimization level
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# -f...: tuning, see GCC manual and avr-libc documentation
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# -Wall...: warning level
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# -Wa,...: tell GCC to pass this to the assembler.
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#---------------- C++ Compiler Options ----------------
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ifeq ($(strip $(DEBUG_ENABLE)),yes)
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CXXFLAGS += -g$(DEBUG)
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endif
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@ -141,57 +93,17 @@ CXXFLAGS += -Wundef
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ifneq ($(strip $(ALLOW_WARNINGS)), yes)
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CXXFLAGS += -Werror
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endif
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#CXXFLAGS += -mshort-calls
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#CXXFLAGS += -fno-unit-at-a-time
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#CXXFLAGS += -Wstrict-prototypes
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#CXXFLAGS += -Wunreachable-code
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#CXXFLAGS += -Wsign-compare
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#CXXFLAGS += $(CSTANDARD)
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#---------------- Assembler Options ----------------
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ASFLAGS += $(ADEFS)
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ifeq ($(VERBOSE_AS_CMD),yes)
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ASFLAGS += -v
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endif
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#---------------- Library Options ----------------
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# Minimalistic printf version
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PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
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# Floating point printf version (requires MATH_LIB = -lm below)
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PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
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# If this is left blank, then it will use the Standard printf version.
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PRINTF_LIB =
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#PRINTF_LIB = $(PRINTF_LIB_MIN)
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#PRINTF_LIB = $(PRINTF_LIB_FLOAT)
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# Minimalistic scanf version
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SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
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# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
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SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
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# If this is left blank, then it will use the Standard scanf version.
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SCANF_LIB =
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#SCANF_LIB = $(SCANF_LIB_MIN)
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#SCANF_LIB = $(SCANF_LIB_FLOAT)
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MATH_LIB = -lm
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CREATE_MAP ?= yes
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#---------------- Linker Options ----------------
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# -Wl,...: tell GCC to pass this to linker.
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# -Map: create map file
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# --cref: add cross reference to map file
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#
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# Comennt out "--relax" option to avoid a error such:
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# (.vectors+0x30): relocation truncated to fit: R_AVR_13_PCREL against symbol `__vector_12'
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#
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CREATE_MAP ?= yes
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ifeq ($(CREATE_MAP),yes)
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LDFLAGS += -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref
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endif
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@ -201,20 +113,11 @@ endif
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#LDFLAGS += -Wl,--relax
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LDFLAGS += $(EXTMEMOPTS)
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LDFLAGS += $(patsubst %,-L%,$(EXTRALIBDIRS))
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LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
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#LDFLAGS += -T linker_script.x
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LDFLAGS += -lm
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# You can give EXTRALDFLAGS at 'make' command line.
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LDFLAGS += $(EXTRALDFLAGS)
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#---------------- Assembler Listings ----------------
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# -Wa,...: tell GCC to pass this to the assembler.
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# -adhlns: create listing
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# -gstabs: have the assembler create line number information; note that
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# for use in COFF files, additional information about filenames
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# and function names needs to be present in the assembler source
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# files -- see avr-libc docs [FIXME: not yet described there]
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# -listing-cont-lines: Sets the maximum number of continuation lines of hex
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# dump that will be displayed for a given single line of source input.
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ADHLNS_ENABLE ?= no
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ifeq ($(ADHLNS_ENABLE),yes)
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@ -30,7 +30,7 @@ COMPILEFLAGS += -mthumb
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CFLAGS += $(COMPILEFLAGS)
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CXXFLAGS += $(COMPILEFLAGS)
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CXXFLAGS += -fno-exceptions -std=c++11
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CXXFLAGS += -fno-exceptions $(CXXSTANDARD)
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LDFLAGS +=-Wl,--gc-sections
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LDFLAGS += -Wl,-Map="%OUT%%PROJ_NAME%.map"
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@ -38,7 +38,7 @@ CFLAGS += -fno-inline-small-functions
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CFLAGS += -fno-strict-aliasing
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CXXFLAGS += $(COMPILEFLAGS)
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CXXFLAGS += -fno-exceptions -std=c++11
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CXXFLAGS += -fno-exceptions $(CXXSTANDARD)
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LDFLAGS += -Wl,--gc-sections
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@ -31,4 +31,4 @@ CFLAGS += -fno-strict-aliasing
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CXXFLAGS += $(COMPILEFLAGS)
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CXXFLAGS += -fno-exceptions
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CXXFLAGS += -std=gnu++11
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CXXFLAGS += $(CXXSTANDARD)
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