Use unique temp directory for config finder

[abejgonzalez]

This adds a private make variable to the config finder target that specifies a unique location to store the temporary file needed.

Related PRs / Issues:

Type of change:

• Bug fix
• New feature
• Other enhancement

Impact:

• RTL change
• Software change (RISC-V software)
• Build system change
• Other

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[jerryz123]

Thanks,

[tymcauley]

Sorry to comment after this is already merged, but should we use a similar strategy for the /tmp usage in common.mk? See here:

chipyard/common.mk

Lines 199 to 201 in a1afdb4

	@if [ $(SFC_LEVEL) = low ]; then cat $(SFC_ANNO_FILE) | jq 'del(.[] | select(.target | test("io.cpu"))?)' > /tmp/unnec-anno-deleted.sfc.anno.json; fi
	@if [ $(SFC_LEVEL) = low ]; then cat /tmp/unnec-anno-deleted.sfc.anno.json | jq 'del(.[] | select(.class | test("SRAMAnnotation"))?)' > /tmp/unnec-anno-deleted2.sfc.anno.json; fi
	@if [ $(SFC_LEVEL) = low ]; then cat /tmp/unnec-anno-deleted2.sfc.anno.json > $(SFC_ANNO_FILE) && rm /tmp/unnec-anno-deleted.sfc.anno.json && rm /tmp/unnec-anno-deleted2.sfc.anno.json; fi

[jerryz123]

Sorry to comment after this is already merged, but should we use a similar strategy for the /tmp usage in common.mk? See here:

I didn't realize there was another part in the flow that was creating stuff in /tmp. I think that needs to be changed as well to avoid conflicts in multi-user environments.