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46 lines
1.7 KiB
Makefile
46 lines
1.7 KiB
Makefile
ifneq ($(lastword a b),b)
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$(error This Makefile requires make 3.81 or newer)
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endif
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# Detect whether shell style is windows or not
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# https://stackoverflow.com/questions/714100/os-detecting-makefile/52062069#52062069
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ifeq '$(findstring ;,$(PATH))' ';'
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# PATH contains semicolon - so we're definitely on Windows.
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CMDEXE := 1
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# makefile shell commands should use syntax for DOS CMD, not unix sh
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# Unfortunately, SHELL may point to sh or bash, which can't accept DOS syntax.
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# We can't just use sh, because while sh and/or bash shell may be available,
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# many Windows environments won't have utilities like realpath used below, so...
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# Force DOS command shell on Windows.
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SHELL := cmd.exe
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endif
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#$(info top.mk: SHELL=$(SHELL))
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#$(info top.mk: CMDEXE=$(CMDEXE))
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# Set TOP to be the path to get from the current directory (where make was
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# invoked) to the top of the tree. $(lastword $(MAKEFILE_LIST)) returns
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# the name of this makefile relative to where make was invoked.
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THIS_MAKEFILE := $(lastword $(MAKEFILE_LIST))
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# strip off /tools/top.mk to get for example ../../..
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TOP := $(patsubst %/tools/top.mk,%,$(THIS_MAKEFILE))
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#$(info top.mk: Initial TOP=$(TOP))
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# Set TOP to an absolute path, for example /tinyUSB (from ../../..)
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ifeq ($(CMDEXE),1)
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TOP := $(subst \,/,$(shell for %%i in ( $(TOP) ) do echo %%~fi))
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else
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TOP := $(shell realpath $(TOP))
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endif
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#$(info top.mk: Top directory is $(TOP))
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# Set CURRENT_PATH to the relative path from TOP to the current directory, ie examples/device/cdc_msc_freertos
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ifeq ($(CMDEXE),1)
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CURRENT_PATH := $(subst $(TOP)/,,$(subst \,/,$(shell echo %CD%)))
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else
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CURRENT_PATH := $(shell realpath --relative-to=$(TOP) `pwd`)
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endif
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#$(info top.mk: Path from top is $(CURRENT_PATH))
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