rpm macro magic help

[Panu Matilainen]

On 11/01/2013 05:12 PM, Sandro Mani wrote:
>
> On 01.11.2013 16:09, Sandro Mani wrote:
>>
>> On 01.11.2013 16:07, Dridi Boukelmoune wrote:
>>> On Fri, Nov 1, 2013 at 3:59 PM, Sandro Mani <manisandro at gmail.com>
>>> wrote:
>>>> Hi,
>>>>
>>>> I'm trying to do some rpm macro magic:
>>>>
>>>> %define do_build() \
>>>> mkdir build_win%{1}_%{2}; \
>>>> (cd build_win%{1}_%{2}; \
>>>> %{mingw%{1}_qmake_%{2}} 'PREFIX=%{mingw%{1}_prefix}'
>>>> 'TARGET=quazip-%{2}'
>>>> ../libquazip; \
>>>> %{mingw%{1}_make} %{?_smp_mflags}; \
>>>> )\
>>>> %{nil}
>>> According to the guidelines you should use %global instead of %define.
>>>
>> Oh right, true.
>>
> Actually "macro functions" (if that is what one can call them) don't
> seem to work with %global, only with %define.

Yes, because the body of a %global is expanded at the time of 
definition, whereas %define is expanded at time of use. The guideline 
seems to cause at least as much confusion as it was supposed to 
eliminate, because everybody just remembers about the guideline is that 
"using %define is somehow bad" when that's not the case.

	- Panu -