Hi,
[Please retain the CC to [EMAIL PROTECTED] so
that the Debian Bug Tracking system can record your input]
This has been reported by a debian user.
There seems to be a strange interaction with the "-W <file>"
option when it is used in conjunction with the VPATH feature of
make.
Firstly, here is an excerpt from the make info manual,
`-W FILE'
`--what-if=FILE'
`--new-file=FILE'
`--assume-new=FILE'
Pretend that the target FILE has just been modified. When
used with the `-n' flag, this shows you what would happen if
you were to modify that file. Without `-n', it is almost the
same as running a `touch' command on the given file before
running `make', except that the modification time is changed
only in the imagination of `make'.
Now, an annotated typescript that demonstrates the problem,
1. !139, 140, 141, 142 - here is the situation, "a" depends on
"b", however, "b" only exists as "./b-dir/b", while "a" exists
only in the directory from which make is being run. As you can
see, "a" is up to date.
139 jeff /tmp $ echo .{,/b-dir}/{a,b}
./a ./b ./b-dir/a ./b-dir/b
140 jeff /tmp $ ls -l .{,/b-dir}/{a,b}
ls: ./b: No such file or directory
ls: ./b-dir/a: No such file or directory
-rw-rw-r-- 1 jeff root 0 Aug 3 14:29 ./a
-rw-rw-r-- 1 jeff root 0 Aug 3 14:29 ./b-dir/b
--> exit status 1
141 jeff /tmp $ printf '%b' 'a: b\n\tcp $(<) $(@)\n'
a: b
cp $(<) $(@)
142 jeff /tmp $ printf '%b' 'a: b\n\tcp $(<) $(@)\n' | make -f \
/dev/stdin VPATH=b-dir
make: `a' is up to date.
2. !143, 144, 145 - I maintain that make should behave identically
at both !143 and !144-145, ie, at !143, "a" should have been
re-made.
143 jeff /tmp $ printf '%b' 'a: b\n\tcp $(<) $(@)\n' | make -f \
/dev/stdin VPATH=b-dir -W ./b-dir/b
make: `a' is up to date.
144 jeff /tmp $ touch ./b-dir/b
145 jeff /tmp $ printf '%b' 'a: b\n\tcp $(<) $(@)\n' | make -f \
/dev/stdin VPATH=b-dir
cp b-dir/b a
3. !146, 147, 148 - here make behaves correctly at !146 and !147,
however, the behavior at !148 is problematic, IMO. Since VPATH
is in effect, make should pretend that the first "b" that it
finds in the VPATH has just been modified, instead make ignores
VPATH entirely, and considers "b", ie, "./b" as the
prerequisite for "a".
One could argue here that "-W b" means "-W ./b", thus make is
behaving correctly at !148, however, such an interpretation
makes it very difficult to use "-W <file>" along with VPATH and
forces the user to know exactly where VPATH would have found
<pathname-to-file> in order for her to specify it as "-W
<pathname-to-file>".
146 jeff /tmp $ printf '%b' 'a: b\n\tcp $(<) $(@)\n' | make -f \
/dev/stdin VPATH=b-dir
make: `a' is up to date.
147 jeff /tmp $ printf '%b' 'a: b\n\tcp $(<) $(@)\n' | make -f \
/dev/stdin VPATH=b-dir -W ./b
cp b a
cp: cannot stat `b': No such file or directory
make: *** [a] Error 1
--> exit status 2
148 jeff /tmp $ printf '%b' 'a: b\n\tcp $(<) $(@)\n' | make -f \
/dev/stdin VPATH=b-dir -W b
cp b a
cp: cannot stat `b': No such file or directory
make: *** [a] Error 1
--> exit status 2
manoj
--
Kissing don't last, cookery do. George Meredith
Manoj Srivastava <[EMAIL PROTECTED]> <http://www.debian.org/%7Esrivasta/>
1024R/C7261095 print CB D9 F4 12 68 07 E4 05 CC 2D 27 12 1D F5 E8 6E
1024D/BF24424C print 4966 F272 D093 B493 410B 924B 21BA DABB BF24 424C
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