[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: Conditional include directories
From: |
Rakesh Sharma |
Subject: |
RE: Conditional include directories |
Date: |
Tue, 4 Aug 2015 04:03:32 -0700 |
One way can be as follows:
## pre-define your library directories based on the output of the "getconf"
output format
LIB_32 := /stage2/lib/dbus-1.0/include
LIB_64 := /stage2/lib64/dbus-1.0/include
# then compute the architecture of the machine running gmake
CFLAGS := -I$(LIB_$(strip $(shell getconf LONG_BIT)))
### now you are all set for using the CFLAGS in your build code.
## you may want to incorporate some amount of error checking
# when the `getconf' command delivers output different than either 32 or 64.
# another method could be to invoke the "uname -m" command.
> Date: Mon, 3 Aug 2015 18:56:38 +0200
> From: address@hidden
> To: address@hidden
> Subject: Re: Conditional include directories
> CC: address@hidden
>
> On Mon, Aug 03, 2015 at 04:38:37PM +0000, Mike Gran wrote:
>>
>> Hello all,
>>
>> In a standalone project makefile I want to add a -I directory
>> parameter to a CFLAGS variable.
>>
>> On a 32-bit box, I need to add it as
>> -I/stage2/lib/dbus-1.0/include
>>
>> One a 64-bit box, I need to add it as
>> -I/stage2/lib64/dbus-1.0/include
>>
>> There are a bunch of ways to do this, I guess.
>
>
> A possible way might be to use pkg-config. Your Dbus library might be
> registered in some pkg-config *.pc file.
>
> http://www.freedesktop.org/wiki/Software/pkg-config/
>
> A way of using it in your Makefile:
> http://stackoverflow.com/questions/20145132/makefiles-how-can-i-use-them/20146082#20146082
>
> Regards
> --
> Basile Starynkevitch http://starynkevitch.net/Basile/
> France basile at starynkevitch dot net
>
> _______________________________________________
> Help-make mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/help-make