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7d9ee7e380
Since we use "?=" to set PLATFORM_ROOT, it is better to change the name to be more special, or else it may be overridden by some environment variables, such as in some CI build environments. Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
39 lines
1.6 KiB
Makefile
39 lines
1.6 KiB
Makefile
#
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# Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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################################################################################
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# Helpers for finding and referencing platform directories
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################################################################################
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ifndef PLAT_HELPERS_MK
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PLAT_HELPERS_MK := $(lastword $(MAKEFILE_LIST))
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ifeq (${PLAT},)
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$(error "Error: Unknown platform. Please use PLAT=<platform name> to specify the platform")
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endif
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# TF_PLATFORM_ROOT can be overridden for when building tools directly
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TF_PLATFORM_ROOT ?= plat/
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PLAT_MAKEFILE := platform.mk
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# Generate the platforms list by recursively searching for all directories
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# under /plat containing a PLAT_MAKEFILE. Append each platform with a `|`
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# char and strip out the final '|'.
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ALL_PLATFORM_MK_FILES := $(call rwildcard,${TF_PLATFORM_ROOT},${PLAT_MAKEFILE})
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ALL_PLATFORM_DIRS := $(patsubst %/,%,$(dir ${ALL_PLATFORM_MK_FILES}))
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ALL_PLATFORMS := $(sort $(notdir ${ALL_PLATFORM_DIRS}))
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PLAT_MAKEFILE_FULL := $(filter %/${PLAT}/${PLAT_MAKEFILE},${ALL_PLATFORM_MK_FILES})
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PLATFORM_LIST := $(subst ${space},|,${ALL_PLATFORMS})
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ifeq ($(PLAT_MAKEFILE_FULL),)
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$(error "Error: Invalid platform. The following platforms are available: ${PLATFORM_LIST}")
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endif
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# Record the directory where the platform make file was found.
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PLAT_DIR := $(dir ${PLAT_MAKEFILE_FULL})
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endif
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