[jamming] Spurious warning in 2.5?
rjshaw at iprimus.com.au
Thu Feb 20 14:31:08 PST 2003
Anthony Heading wrote:
>I tried to send this to this list a week ago, but I think it must have
>2.5 pre seems to believe there is a circular dependency from the
> DEPENDS $(<) : $(>) ;
> INCLUDES $(>) : $(<) ;
> cproto -o $(<) $(>)
>CProto file.cproto.h : file.c ;
>Main file : file.c ;
>The idea here is that an included header file is
>autogenerated from source - for example "cproto"
>is a program which autogenerates a prototype header.
>All seems to work cleanly with 2.4.
>warning: file.c depends on itself
>which I think is entirely false. file.c is a source
>file and doesn't depend on anything.
>Any confirmation or opposite about whether this
>indeed a bug or not much welcomed.
Expanding it out shows:
DEPENDS file.cproto.h : file.c
INCLUDES file.c : file.cproto.h
So, file.cproto.h depends on file.c. However, whatever
depends on file.c also depends on file.cproto.h. Therefore,
file.cproto.h depends on file.cproto.h. The error message
seems to be wrong, but it still looks like a circular dependency.
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