72 lines
2.2 KiB
Makefile
72 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) 2013 Frantisek Burian <BuFran@seznam.cz>
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##
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## Linker script generator feature
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## -------------------------------
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##
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## This generator will generate <chipname>.ld linker script file in the project
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## directory for the specified device, and this script will be automatically
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## used as main linker script during the build process.
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##
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## WARNING: You must include this file after all shared variables are setup,
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## and before the command section begins. Ideal place of the include is exactly
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## after the all: rule in Your makefile.
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##
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## Options
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## -------
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##
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## This feature is configured by specifying variable DEVICE=<device part name>
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## in the makefile of Your project.
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##
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## WARNING Please don't forget to specify full name of the chip you are using.
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## Many chip families have device specific letters specified on the end of
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## device name string.
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##
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## Example:
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## --------
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##
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## @code
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## DEVICE=stm32f407vgt6
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## <... common makefile code ...>
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## all: images
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##
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## include <libopencm3 dir>/ld/Makefile.linker
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##
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## images: <....>
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## @endcode
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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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ifneq ($(DEVICE),)
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LDSCRIPT=$(DEVICE).ld
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LD_PARAMS=$(shell gawk -v PAT="$(DEVICE)" -f $(SRCLIBDIR)/scripts/genlink.awk $(SRCLIBDIR)/ld/devices.data 2>/dev/null)
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CFLAGS+=$(LD_PARAMS)
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LDFLAGS+=$(LD_PARAMS)
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ARCH_FLAGS=
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$(LDSCRIPT):$(SRCLIBDIR)/ld/linker.ld.S
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ifeq ($(LD_PARAMS),)
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$(error unknown device $(DEVICE) for the linker. Cannot generate ldscript)
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endif
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@#printf " GENLNK $(subst $(shell pwd)/,,$(@))\n"
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$(Q)$(CC) $(LD_PARAMS) -P -E $< > $@
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GENFILES += $(LDSCRIPT)
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endif
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