Re: howto get kernel preprocessor output

On 24/03/15 16:17, Tony Jones wrote:

Just run 'make path/file.i'

Awesome! I'll keep a note of that!

Daniel.

On Mar 24, 2015 9:17 AM, "Daniel Thompson" <daniel.thompson@linaro.org mailto:daniel.thompson@linaro.org> wrote:

On 24/03/15 15:13, pleasurefish wrote:

    would you pls tell me the details,  :)


You added V=1 to the kernel build flags which causes the build
system to show the commands it is executing.

Then you find the specific command you want to see the pre-processed
output for; copy it, add -E and run it by hand.

That's it!


Daniel.

    At 2015-03-24 22:04:55, "Daniel Thompson"
    <daniel.thompson@linaro.org <mailto:daniel.thompson@linaro.org>>
    wrote:

        On 24/03/15 14:02, pleasurefish wrote:

            hi all,

            i'm porting the mali driver on the latest linux kernel.
            but it cannot work.
            firstly, i thought maybe i should check that the
            preprocessor output be
            the same under different linux kernel verison.

            as gcc could use the -E options to get the preprocess
            output.
            after reading in the Document/kbuild/kbuild.txt,
            modules.txt.
            KCPPFLAGS=-E was set in the KDIR/Makefile, but the
            preprocessors output
            couldn't get in the *.o.

            is that right?
            or is there any quick way to get the preprocessor output.


        I do it the very dumb way!

        I build with V=1 and then copy the resulting line, slap on a
        -E and run
        it outside of make.


        Daniel.



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