189396c959
Use TGT_CFLAGS instead of CFLAGS in Makefile. Otherwise build will abort when CFLAGS is passed to the build process by make option or environment.
71 lines
2.2 KiB
Makefile
71 lines
2.2 KiB
Makefile
##
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## This file is part of the libopencm3 project.
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##
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## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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## Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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##
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## This library is free software: you can redistribute it and/or modify
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## it under the terms of the GNU Lesser General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## This library is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU Lesser General Public License for more details.
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##
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## You should have received a copy of the GNU Lesser General Public License
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## along with this library. If not, see <http://www.gnu.org/licenses/>.
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##
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LIBNAME = libopencm3_stm32f7
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SRCLIBDIR ?= ../..
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PREFIX ?= arm-none-eabi
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CC = $(PREFIX)-gcc
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AR = $(PREFIX)-ar
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# STM32F7 only supports single precision FPU
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FP_FLAGS ?= -mfloat-abi=hard -mfpu=fpv5-sp-d16
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TGT_CFLAGS = -Os -g \
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-Wall -Wextra -Wimplicit-function-declaration \
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-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
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-Wundef -Wshadow \
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-I../../../include -fno-common \
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-mcpu=cortex-m7 -mthumb $(FP_FLAGS) \
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-Wstrict-prototypes \
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-ffunction-sections -fdata-sections -MD -DSTM32F7
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ARFLAGS = rcs
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OBJS = gpio.o gpio_common_all.o gpio_common_f0234.o
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VPATH += ../../usb:../:../../cm3:../common
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VPATH += ../../ethernet
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###############################################################################
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# Checking CPU support in the toolchain
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###############################################################################
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# TODO: This check and silent skip of build should be removed, when it will be
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# sure that first compatible toolchain (g-a-e 4.8 2014q3) will be sufficiently
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# penetrated in majority of user stations.
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define MISSING_CPU
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Your toolchain doesn't support -mcpu=cortex-m7.
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Please use gcc-arm-embedded 4.8 2014q3 or newer. Skipping this sub-library.
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endef
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ifneq ($(shell $(CC) --help=target | grep -q '\<cortex-m7\>'; echo $$?),0)
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$(warning $(MISSING_CPU))
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all clean:
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@true
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$(SRCLIBDIR)/$(LIBNAME).a:
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@true
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else
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include ../../Makefile.include
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endif
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