[mgear/mgear.git] / experiments / if-two-commands.mk

# Make expands the command script as a whole before splitting it into lines
# and executing each line.

define mm-gen-commands
exec 3>$@.tmp && echo $(call sq,$(call fmt-make-assignment,cmd-$(target),$(cmd))) >&3 && set -o pipefail && { ($(cmd)) 2>&1 | sed -re '1s/^/errors-$$(target):=$$(empty)/; 1!s/^/errors-$$(target)+=$$(nl)/' >&3; xc=$$?; } && { [ $xc == 0 ] || echo "exitcode-$(target):=$$xc" >&3 } && if [ $xc != 0 ] || cmp -s $(target) $(target).tmp; then mv -f $@.tmp $@; else rm -f $(target) && mv -f $@.tmp $@ && mv -f $(target).tmp $(target); fi
echo bar
endef

phooey:
	$(if x,$(mm-gen-commands),)
	$(eval include $@)
Commit	Line	Data
00804b7c MM	1	# Make expands the command script as a whole before splitting it into lines
	2	# and executing each line.
	3
	4	define mm-gen-commands
	5	exec 3>$@.tmp && echo $(call sq,$(call fmt-make-assignment,cmd-$(target),$(cmd))) >&3 && set -o pipefail && { ($(cmd)) 2>&1 \| sed -re '1s/^/errors-$$(target):=$$(empty)/; 1!s/^/errors-$$(target)+=$$(nl)/' >&3; xc=$$?; } && { [ $xc == 0 ] \|\| echo "exitcode-$(target):=$$xc" >&3 } && if [ $xc != 0 ] \|\| cmp -s $(target) $(target).tmp; then mv -f $@.tmp $@; else rm -f $(target) && mv -f $@.tmp $@ && mv -f $(target).tmp $(target); fi
	6	echo bar
	7	endef
	8
	9	phooey:
	10	$(if x,$(mm-gen-commands),)
	11	$(eval include $@)