Re: dependency issue

[Lynn Lin]

On Wed, Aug 25, 2010 at 11:17 PM, Lynn Lin <address@hidden> wrote:
> On Wed, Aug 25, 2010 at 11:08 PM, Kristof Provost <address@hidden> wrote:
>> On 2010-08-25 22:57:51 (+0800), Lynn Lin <address@hidden> wrote:
>>> On Wed, Aug 25, 2010 at 10:47 PM, Kristof Provost <address@hidden> wrote:
>>> > On 2010-08-25 19:35:27 (+0800), Lynn Lin <address@hidden> wrote:
>>> >> All,
>>> >>    I use the following rules to generate dependency automatically
>>> >>
>>> >> %.P : %.cpp
>>> >>         $(QUIET_MM)rm -f $@; \
>>> >>         $(CPP) -M $(CPPFLAGS) $(CXXFLAGS) $(INCLUDES)  $< > 
>>> >> address@hidden; \
>>> >
>>> > Try with the -MP option, rather than the -M option.
>>> seems good,however it shows
>>>
>>> cc1plus: error: to generate dependencies you must specify either -M or -MM
>>>
>> My appollogies, it seems you'll have to combine the two options, so -M
>> -MP together.
> appreciate your help very much! It works

interesting question:

Could we update makefile manual
http://www.gnu.org/software/make/manual/make.html#Automatic-Prerequisites
?
many people use this example to generate dependency automatically

>>
>> Regards,
>> Kristof
>>
>