URL:
<http://savannah.gnu.org/bugs/?31621>
Summary: interaction of pattern rules and globs
Project: make
Submitted by: pmachata
Submitted on: Чтв 11 Ноя 2010 15:39:36
Severity: 3 - Normal
Item Group: Bug
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Component Version: CVS
Operating System: None
Fixed Release: None
Triage Status: None
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Details:
make doesn't seem to like pattern rule prerequisites that use globs. I found
no reference in the manual that states that this should be supported, so I
don't actually know if what I'm asking for is a bug fix or enhancement.
Anyway:
$ find xxx
xxx
xxx/sums
xxx/sums/zzz.md5
$ make -rd -f x.mk xxx/md5
Reading makefiles...
Reading makefile `x.mk'...
# the following are my two debug printfs
-> parse_file_seq %/md5
-> parse_file_seq %/sums/*.md5
Updating makefiles....
<--- snip --->
Updating goal targets....
Considering target file `xxx/md5'.
File `xxx/md5' does not exist.
Looking for an implicit rule for `xxx/md5'.
Trying pattern rule with stem `xxx'.
Trying implicit prerequisite `xxx/sums/*.md5'.
Trying pattern rule with stem `xxx'.
Trying implicit prerequisite `xxx/sums/*.md5'.
Looking for a rule with intermediate file `xxx/sums/*.md5'.
Avoiding implicit rule recursion.
No implicit rule found for `xxx/md5'.
Finished prerequisites of target file `xxx/md5'.
Must remake target `xxx/md5'.
make: *** No rule to make target `xxx/md5'. Stop.
... the problem being that the wildcard expansion takes place in
read.c:parse_file_seq, when reading the makefile. That doesn't find any file
matching the %/... path, so it leaves the wild card as is, and later after the
stem-replacement, make looks for xxx/sums/*.md5.
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