ifndef PYTHON
ifeq ($(origin PYTHON), undefined)
PYTHON := $(shell which python3 || which python || echo python3)
endif
export PYTHON
endif
ifeq ($(TEST_TMPDIR),)
TEST_TMPDIR := $(TMPD)
endif
ifeq ($(TEST_TMPDIR),)
ifeq ($(BASE_TMPDIR),)
BASE_TMPDIR :=$(TMPDIR)
endif
ifeq ($(BASE_TMPDIR),)
BASE_TMPDIR :=/tmp
endif
TEST_TMPDIR := $(shell f=/dev/shm; test -k $$f || f=$(BASE_TMPDIR); \
perl -le 'use File::Temp "tempdir";' \
-e 'print tempdir("'$$f'/rocksdb.XXXX", CLEANUP => 0)')
endif
export TEST_TMPDIR