ardupilot/mk/environ.mk

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# find key paths and system type
# Save the system type for later use.
#
SYSTYPE := $(shell uname)
# force LANG to C so awk works sanely on MacOS
export LANG=C
#
# Locate the sketch sources based on the initial Makefile's path
#
SRCROOT := $(realpath $(dir $(firstword $(MAKEFILE_LIST))))
ifneq ($(findstring CYGWIN, $(SYSTYPE)),)
# Workaround a $(realpath ) bug on cygwin
ifeq ($(SRCROOT),)
SRCROOT := $(shell cygpath -m ${CURDIR})
$(warning your realpath function is not working)
$(warning > setting SRCROOT to $(SRCROOT))
endif
endif
#
# We need to know the location of the sketchbook. If it hasn't been overridden,
# try the parent of the current directory. If there is no libraries directory
# there, assume that we are in a library's examples directory and try backing up
# further.
#
ifeq ($(SKETCHBOOK),)
SKETCHBOOK := $(shell cd $(SRCROOT)/.. && pwd)
ifeq ($(wildcard $(SKETCHBOOK)/libraries),)
SKETCHBOOK := $(shell cd $(SRCROOT)/../.. && pwd)
endif
ifeq ($(wildcard $(SKETCHBOOK)/libraries),)
SKETCHBOOK := $(shell cd $(SRCROOT)/../../.. && pwd)
endif
ifeq ($(wildcard $(SKETCHBOOK)/libraries),)
SKETCHBOOK := $(shell cd $(SRCROOT)/../../../.. && pwd)
endif
ifeq ($(wildcard $(SKETCHBOOK)/libraries),)
$(error ERROR: cannot determine sketchbook location - please specify on the commandline with SKETCHBOOK=<path>)
endif
else
ifeq ($(wildcard $(SKETCHBOOK)/libraries),)
$(warning WARNING: sketchbook directory $(SKETCHBOOK) contains no libraries)
endif
endif
ifneq ($(findstring CYGWIN, $(SYSTYPE)),)
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# Convert cygwin path into a windows normal path
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SKETCHBOOK := $(shell cygpath ${SKETCHBOOK})
endif
#
# Work out the sketch name from the name of the source directory.
#
SKETCH := $(lastword $(subst /, ,$(SRCROOT)))
# Workaround a $(lastword ) bug on cygwin
ifeq ($(SKETCH),)
WORDLIST := $(subst /, ,$(SRCROOT))
SKETCH := $(word $(words $(WORDLIST)),$(WORDLIST))
endif
#
# Work out where we are going to be building things
#
TMPDIR ?= /tmp
ifneq ($(findstring px4, $(MAKECMDGOALS)),)
# when building px4 we need all sources to be inside the sketchbook directory
# as the NuttX build system relies on it
BUILDROOT := $(SKETCHBOOK)/Build.$(SKETCH)
else
BUILDROOT := $(abspath $(TMPDIR)/$(SKETCH).build)
endif
ifneq ($(findstring CYGWIN, $(SYSTYPE)),)
# Workaround a $(abspath ) bug on cygwin
ifeq ($(BUILDROOT),)
BUILDROOT := C:$(TMPDIR)/$(SKETCH).build
$(warning your abspath function is not working)
$(warning > setting BUILDROOT to $(BUILDROOT))
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else
BUILDROOT := $(shell cygpath ${BUILDROOT})
endif
endif
# Jump over the next makefile sections when runing a "make configure"
ifneq ($(MAKECMDGOALS),configure)
################################################################################
# Config options
#
# The Makefile calling us must specify BOARD
#
include $(SKETCHBOOK)/config.mk
ifeq ($(PORT),)
$(error ERROR: could not locate $(SKETCHBOOK)/config.mk, please run 'make configure' first and edit config.mk)
endif
ifneq ($(APPDIR),)
# this is a recusive PX4 build
HAL_BOARD = HAL_BOARD_PX4
endif
# handle target based overrides for board type
ifneq ($(findstring px4, $(MAKECMDGOALS)),)
HAL_BOARD = HAL_BOARD_PX4
endif
ifneq ($(findstring sitl, $(MAKECMDGOALS)),)
HAL_BOARD = HAL_BOARD_AVR_SITL
endif
ifneq ($(findstring vrbrain, $(MAKECMDGOALS)),)
HAL_BOARD = HAL_BOARD_VRBRAIN
endif
ifneq ($(findstring apm1, $(MAKECMDGOALS)),)
HAL_BOARD = HAL_BOARD_APM1
endif
ifneq ($(findstring apm2, $(MAKECMDGOALS)),)
HAL_BOARD = HAL_BOARD_APM2
endif
# default to APM2
ifeq ($(HAL_BOARD),)
#$(warning No HAL_BOARD in config.mk - defaulting to HAL_BOARD_APM2)
HAL_BOARD = HAL_BOARD_APM2
endif
HARDWARE ?= arduino
ifeq ($(BOARD),)
BOARD = mega2560
endif
ifneq ($(findstring apm1-1280, $(MAKECMDGOALS)),)
BOARD = mega
endif
endif