RE: Generating pattern rules for various directories

[Dave Korn]

Pierre-Julien VILLOUD wrote on 07 August 2008 15:03:

> I'm trying to write a generic makefile with gnu-make under windows
> (unxUtils). The problem is that my source files are not in the same
> directory.  
> 
> For example :
> 
> Dir1/Dir2 : directory where is located the makefile and some source files
> and where I run make. 
> 
> Dir3/ : some other sources files.

> So I tried something like that with (INCDIRS=Dir1/Dir2 Dir3 Dir3/Dir4)
> but it doesn't work L. 

> As the directories in INCDIRS change from a project to another I can't
> write explicitly the rules. Is there a way to bypass this problem and
> generate those targets ?  

  Wouldn't 

vpath %.cpp $(INCDIRS)

combined with a straightforward 

$(OBJDIR)/%.o:%.cpp
        $(CPP) -o $@ -c $< $(CFLAGS) \
                $(foreach DIRECTORY,$(INCDIRS),-I(DIRECTORY))

... do the job?



    cheers,
      DaveK
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