RE: how to output newlines?

[Dave Korn]

Greg Chicares wrote on 29 July 2008 13:20:

> On 2008-07-29 08:31Z, PRC wrote:
>> 
>> I have a variable in my makefile script, whose values may be
>> src_more = dir1/foo1.c dir2/foo2.c
>> I wonder how to expand the variable to
>> ----------------------------------------
>> vpath foo1.c dir1
>> vpath foo2.c dir2
> 
> But what would happen if the variable's definition were as follows?
>   src_more = dir1/fooA.c dir2/fooA.c


  Well, just in case it doesn't: the trick PRC is looking for is to create a
multi-line macro using def/endef, expand that to a multi-line string using
foreach and call to do the substitution, then eval that string to execute it
as if it were makefile text.


src_more = dir1/foo1.c dir2/foo2.c

define vp

vpath $1 $2

endef

$(info $(foreach FILE,$(src_more),\
        $(call vp,$(notdir $(FILE)),$(dir $(FILE)))))

$(eval $(foreach FILE,$(src_more),\
        $(call vp,$(notdir $(FILE)),$(dir $(FILE)))))

all:
        : ;


    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....