bugmake - Bugs: bug #33499, VPATH does not work with 'Advanced...


bug #33499: VPATH does not work with 'Advanced Auto-Dependency Generation' when source file is moved into another location

Submitted by:  None
Submitted on:  Thu 09 Jun 2011 06:14:55 AM UTC  
Severity:  3 - Normal Item Group:  Bug
Status:  Not A Bug Privacy:  Public
Assigned to:  None Open/Closed:  Closed
Component Version:  3.81 Operating System:  POSIX-Based
Fixed Release:  None Triage Status:  None

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Mon 19 Sep 2011 07:46:01 PM UTC, comment #1: 

This isn't a bug in GNU make, and the contents of and descriptions on non-GNU/FSF websites are not part of GNU make and aren't subject to bug reports in Savannah.

The behavior you're seeing is correct, since the auto-generated dependency files contain hardcoded pathnames, they don't use VPATH for lookup.

If you wanted to you could probably remove all paths from the generated dependency files, whereupon make would use VPATH, but the problem with that is you can never have two files in two different directories with the same name, or make can't tell the difference.  Maybe that's OK in your environment; I would definitely never accept it in mine.

If you want to discuss this further I think asking on the -email is unavailable- mailing list, giving more details about exactly what you're trying to do, is your best bet.

Paul D. Smith <psmith>
Project Administrator
Thu 09 Jun 2011 06:14:55 AM UTC, original submission:  

I am using 'Advanced Auto-Dependency Generation' described at http://make.paulandlesley.org/autodep.html together with VPATH.

When source file is moved from one location in VPATH into another one (usual situation in our project), make still try to use a source file in old location.

I created a script (attached) to illustrate a problem.

Output on my host:

GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A

This program built for i686-pc-linux-gnu

-------------------------------------------- First build works

found src/a/foo.c, actual src/a/foo.c
cc    -c -MD -o foo.o src/a/foo.c
cc -o foo foo.o
make: Nothing to be done for `all'.

-------------------------------------------- mv src/a/foo.c src/b/foo.c

-------------------------------------------- Second build fails

found src/a/foo.c, actual src/b/foo.c
cc    -c -MD -o foo.o src/a/foo.c
cc: src/a/foo.c: No such file or directory
cc: no input files
make: *** [foo.o] Error 1



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Attach Files:

Attached Files
file #23510:  err_in_dep.sh added by None (2KiB - application/x-sh)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by psmith (Posted a comment)
  • -email is unavailable- added by okarpenk

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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2011-09-19 psmith StatusNone => Not A Bug
        Open/ClosedOpen => Closed
    2011-06-09 okarpenk Carbon-Copy- => Added okarpenk
    2011-06-09 None Attached File- => Added err_in_dep.sh, #23510

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