c025dc0327
As discussed with karlp on irc the devices.data file should not contain gcc specific command line options. For that reason the command line options for gcc are now generated from the variables CPU and FPU by the rules in the mk directory. This breaks the genlink tests. genlink: simplified devices.data devices.data already had the information about the family name. By using the first field (by the pattern used to match it) as family name information that data doesn't have to be provided explicitly. The same data is used to generate the CPPFLAGS, such as -DSTM32F1 The architectures block of the devices.data file was redundant. genlink-config.mk uses family and subfamily to figure out which libopencm3 variant actually exists.
80 lines
3.0 KiB
Makefile
80 lines
3.0 KiB
Makefile
##
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## This file is part of the libopencm3 project.
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##
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## Copyright (C) 2014 Frantisek Burian <BuFran@seznam.cz>
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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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ifeq ($(DEVICE),)
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$(warning no DEVICE specified for linker script generator)
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endif
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LDSCRIPT = $(DEVICE).ld
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DEVICES_DATA = $(OPENCM3_DIR)/ld/devices.data
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genlink_family :=$(shell awk -v PAT="$(DEVICE)" -v MODE="FAMILY" -f $(OPENCM3_DIR)/scripts/genlink.awk $(DEVICES_DATA) 2>/dev/null)
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genlink_subfamily :=$(shell awk -v PAT="$(DEVICE)" -v MODE="SUBFAMILY" -f $(OPENCM3_DIR)/scripts/genlink.awk $(DEVICES_DATA) 2>/dev/null)
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genlink_cpu :=$(shell awk -v PAT="$(DEVICE)" -v MODE="CPU" -f $(OPENCM3_DIR)/scripts/genlink.awk $(DEVICES_DATA) 2>/dev/null)
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genlink_fpu :=$(shell awk -v PAT="$(DEVICE)" -v MODE="FPU" -f $(OPENCM3_DIR)/scripts/genlink.awk $(DEVICES_DATA) 2>/dev/null)
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genlink_cppflags :=$(shell awk -v PAT="$(DEVICE)" -v MODE="CPPFLAGS" -f $(OPENCM3_DIR)/scripts/genlink.awk $(DEVICES_DATA) 2>/dev/null)
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CPPFLAGS += $(genlink_cppflags)
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ARCH_FLAGS :=-mcpu=$(genlink_cpu)
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ifeq ($(genlink_cpu),$(filter $(genlink_cpu),cortex-m0 cortex-m0plus cortex-m3 cortex-m4 cortex-m7))
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ARCH_FLAGS +=-mthumb
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endif
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ifeq ($(genlink_fpu),soft)
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ARCH_FLAGS += -msoft-float
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else ifeq ($(genlink_fpu),hard-fpv4-sp-d16)
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ARCH_FLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
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else ifeq ($(genlink_fpu),hard-fpv5-sp-d16)
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ARCH_FLAGS += -mfloat-abi=hard -mfpu=fpv5-sp-d16
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else
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$(warning No match for the FPU flags)
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endif
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ifeq ($(genlink_family),)
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$(warning $(DEVICE) not found in $(DEVICES_DATA))
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endif
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# only append to LDFLAGS if the library file exists to not break builds
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# where those are provided by different means
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ifneq (,$(wildcard $(OPENCM3_DIR)/lib/libopencm3_$(genlink_family).a))
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LDLIBS += -lopencm3_$(genlink_family)
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else
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ifneq (,$(wildcard $(OPENCM3_DIR)/lib/libopencm3_$(genlink_subfamily).a))
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LDLIBS += -lopencm3_$(genlink_subfamily)
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else
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$(warning $(OPENCM3_DIR)/lib/libopencm3_$(genlink_subfamily).a library variant for the selected device does not exist.)
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endif
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endif
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# only append to LDLIBS if the directory exists
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ifneq (,$(wildcard $(OPENCM3_DIR)/lib))
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LDFLAGS += -L$(OPENCM3_DIR)/lib
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else
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$(warning $(OPENCM3_DIR)/lib as given be OPENCM3_DIR does not exist.)
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endif
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# only append include path to CPPFLAGS if the directory exists
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ifneq (,$(wildcard $(OPENCM3_DIR)/include))
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CPPFLAGS += -I$(OPENCM3_DIR)/include
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else
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$(warning $(OPENCM3_DIR)/include as given be OPENCM3_DIR does not exist.)
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endif
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