| FOO = foo | |
| FOO_SPACE_BAR:=foo bar | |
| FOO_COMMA_BAR:=foo,bar | |
| $(FOO_SPACE_BAR):=foo | |
| $(FOO_COMMA_BAR):=foo | |
| test: | |
| echo $(origin FOO) | |
| echo $(origin FOO BAR) | |
| echo $(origin FOO,BAR) | |
| echo $(origin UNDEFINED) | |
| echo $(origin PATH) | |
| echo $(origin MAKEFILE_LIST) | |
| echo $(origin CC) | |
| # TODO: support environment override, command line, and override. | |
| # TODO: Also add more tests especially for += and ?= | |