Matt McCutchen's Web Site / mgear / mgear.git / blame
| Commit | Line | Data |
|---|---|---|
| ff59f3cf MM |
1 | .SECONDEXPANSION: |
| 2 | ||
| 3 | #dir/x.foo: | |
| 4 | ||
| 5 | #ding=$(@:.foo=.bar) | |
| 6 | # | |
| 7 | #%.foo: $$(info got here) /./proc/self/cwd/$$(ding) | |
| 8 | # echo "Prerequisites: $^" | |
| 9 | # | |
| 10 | #%.bar: | |
| 11 | # echo "We want $@" | |
| 12 | ||
| 13 | # $(call save-and-use,/,prereqs) | |
| 14 | #save-and-use=$(eval $@=$(if $1,$2,$(foreach p,$2,$(dir $@)$p)))$2 | |
| 15 | ||
| 16 | pr1=$(info in pr1, $$@ is $@)$(eval $@@gdeps:=$(subst %,$*,$1))$1 | |
| 17 | pr2=$(info in pr2, $$@ is $@)$(eval $@@gdeps:=$(addprefix $(dir $@),$(subst %,$*,$1)))$1 | |
| 18 | ||
| 19 | FORCE: | |
| 20 | ||
| 21 | define define-rule | |
| 22 | $(eval | |
| 23 | $1: $(if $(findstring /,$1),$$$$(call pr1,$2),$$$$(call pr2,$2)) FORCE | |
| 24 | $$(info +++ $$$$^ is $$^, gdeps is $$($$@@gdeps)) | |
| 25 | ) | |
| 26 | endef | |
| 27 | ||
| 28 | $(call define-rule,%.foo,%.bar) | |
| 29 | ||
| 30 | x/%.bar: | |
| 31 | $(info +++ Making $@) | |
| 32 |