Re: (un)expected make behavior while using VPATH

[Paul Smith]

On Tue, 2012-11-13 at 18:01 +0200, adrian ilarion Ciobanu wrote:
>     %.o: %.c
>             $(CC) $(INC) $(CFLAGS) -DSFHASH -o $(OBJDIR)/$@ -c $<

This is an invalid rule.  It violates one of my "rules of makefiles":

http://make.mad-scientist.net/rules.html

> using it for the first time: make does not rewrite gcc's input file paths:

> using it second time in a row, it does:

Classic.  Don't feel bad, that's what EVERYONE does at first.  That may
well point out that VPATH is mis-designed (or that some other facility
is needed).  However, that's another conversation.  This might help:

http://make.mad-scientist.net/vpath.html

Cheers!