Hi,
using make 3.79.1 on multiple platforms, I've discovered a bahavior of make that I
cannot explain:
When intermediates are created using a pattern rule with multiple targets, only the
first (intermediate) target to be created is deleted after the processing has ended.
As an example, I have a 'file.input' with arbitrary contents, and I'm using the
following makefile:
# The next line can be a workaround in some cases
# but no wildcard like %.int is allowed
#.INTERMEDIATE: file.int file-nodelete.int
all: file.out file-nodelete.out
%.out: %.int
cat $< > $@
%-nodelete.int %.int: %.input
echo "intfile, target $(subst -nodelete,,$*).int" > $(subst -nodelete,,$*).int
echo "intfile nodelete, target $(subst -nodelete,,$*)-nodelete.int" > $(subst
-nodelete,,$*)-nodelete.int
clean:
rm -f *.int *.out
The two 'echo' lines will possibly get mangled by my/your mail client, but I hope the
intention is clear.
Since 'file.out' is the first prerequisite of target 'all', the intermediate
'file.int' is created first, but the commands for it also create 'file-nodelete.int'
in the process. The commands are - correctly - executed only once.
Now, if 'file-nodelete.out' would not be a prerequisite of all, 'file-nodelete.int'
would arguably not be deleted afterwards, possibly since make doesn't retain any
knowledge about files it doesn't need.
However, since 'file-nodelete.int' is a required intermediate file, I would expect it
to be deleted after the process, just like 'file.int' is. The output of running make,
however, reads like this:
[jbezem] darkstar:TmpTest/$ make -f Makefile-indirect
echo "intfile, target file.int" > file.int
echo "intfile nodelete, target file-nodelete.int" > file-nodelete.int
cat file.int > file.out
rm file.int
I've tested this both on Windows NT4, using CygWin 1.3.10, make 3.79.1-5, and on
Solaris 2.7, make 3.79.1.
The inclusion of the special target name '.INTERMEDIATE' for all *.int files induces
make to delete both files, however, wildcards are not supported... I couldn't find
anything in the archives or the manual, either.
Is this a true bug, or can someone teach me how to RTFM?
Ciao,
Johan Bezem
CSK Software AG
_______________________________________________
Bug-make mailing list
[EMAIL PROTECTED]
http://mail.gnu.org/mailman/listinfo/bug-make
