* a rule with prerequisite file that doesn't exist: 'afile'
* an empty rule for 'afile'
=> target is never considered 'up to date'
It would seem to me that, since an empty rule is defined for 'afile', make should know that, since this prerequisite file does not exist and CANNOT be created, it cannot possibly make the target out of date, yet it does.
I want the prerequisite file to affect building target, only if it exists; otherwise target should be considered up to date.
How best to achieve this?
('afile' would be created manually, not by make.)
# Makefile
target: afile
@echo 'building $@';\
touch $@
afile:;
#eof[EMAIL PROTECTED] junk]$ ls afile ls: afile: No such file or directory [EMAIL PROTECTED] junk]$ make target building target [EMAIL PROTECTED] junk]$ make target building target [EMAIL PROTECTED] junk]$ touch afile [EMAIL PROTECTED] junk]$ make target building target [EMAIL PROTECTED] junk]$ make target make: `target' is up to date. [EMAIL PROTECTED] junk]$ - Greg Keraunen http://www.xmake.org
_______________________________________________ Help-make mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/help-make
