Need help with makefiles

[Norbert Thiebaud]

On Mon, Sep 10, 2012 at 11:31 AM, Matúš Kukan <matus.kukan at gmail.com> wrote:
> Hi,
>
> On 10 September 2012 14:31,  <zolniatamas at caesar.elte.hu> wrote:
>> define gb_ConcatPo
>> echo "" > $(2)
>> $(foreach lang,$(filter-out en-US,$(gb_WITH_LANG)), $(shell cat
>> $(gb_POLOCATION)/$(lang)/$(1) >> $(2) && printf "\n" >> $(2)))
>> endef
>>
>> then the function will return with an empty file, as if foreach had no
>> effect.
>
> You probably don't want to use $(shell ..).
> The command in there is executed first, when make is expanding
> gb_ConcatPo I guess.

Yep, but if you double the $ ie $$(shell
you can get the shell to be run when gb_ConcatPo is invoked rather
than when it is defined


Norbert