Re: [PATCH 2/2] ktest: run make mrproper not only for OUTPUT_DIR but also for BUILD_DIR to avoid build failure

[Satoru Takeuchi <satoru.takeuchi@gmail.com>]

At Sun, 2 Mar 2014 08:29:16 -0500,
Steven Rostedt wrote:
> 
> On Sun, 02 Mar 2014 21:23:36 +0900
> Satoru Takeuchi <satoru.takeuchi@gmail.com> wrote:
> 
> > From: Satoru Takeuchi <satoru.takeuchi@gmail.com>
> > 
> > Build failure hapens with the following log if BUILD_DIR is dirty.
> 
> If you want to do make mrproper in the BUILD_DIR, add the command to
> PRE_BUILD or something. I have TAGS in my BUILD_DIRs and this will
> remove them for me. I can't accept this change.
> 
> I've noticed that there's a bug in the Linux make system that causes
> the O=.. builds to fail because somehow the source directory got dirty.
> We need to figure out what that bug is.

I see. So what I should fix is kbuild system.

Thanks,
Satoru

> 
> Thanks,
> 
> -- Steve
> 
> 
> > 
> > ===============================================================================
> > ...
> > RUNNING TEST 1 of 1 with option build olddefconfig
> > 
> > make O=/home/sat/ktest/output mrproper ...   CLEAN   arch/x86/tools
> >   CLEAN   scripts/basic
> >   CLEAN   scripts/kconfig
> >   CLEAN   include/config include/generated arch/x86/include/generated
> >   CLEAN   .config.old include/generated/uapi/linux/version.h
> > SUCCESS
> > ...
> > make O=/home/sat/ktest/output -j8 ...   GEN     /home/sat/ktest/output/Makefile
> > ...
> >   Using /home/sat/src/test-linux-stable/linux-stable as source for kernel
> >   /home/sat/src/test-linux-stable/linux-stable is not clean, please run 'make mrproper'
> >   in the '/home/sat/src/test-linux-stable/linux-stable' directory.
> > make[1]: *** [prepare3] Error 1
> > make[1]: *** Waiting for unfinished jobs....
> >   HOSTLD  arch/x86/tools/relocs
> > make[1]: *** wait: No child processes.  Stop.
> > make: *** [sub-make] Error 2
> > FAILED!
> > CRITICAL FAILURE... failed build
> > ===============================================================================
> > 
> > To avoid this problem, it's necessary to run make mrproper not only
> > for OUTPUT_DIR, but also for BUILD_DIR.
> > 
> > Signed-off-by: Satoru Takeuchi <satoru.takeuchi@gmail.com>
> > Cc: Steven Rostedt <rostedt@goodmis.org>
> > 
> > ---
> >  tools/testing/ktest/ktest.pl | 16 +++++++++-------
> >  1 file changed, 9 insertions(+), 7 deletions(-)
> > 
> > diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
> > index f731ef6..1169b2a 100755
> > --- a/tools/testing/ktest/ktest.pl
> > +++ b/tools/testing/ktest/ktest.pl
> > @@ -120,6 +120,7 @@ my $syslinux;
> >  my $syslinux_path;
> >  my $syslinux_label;
> >  my $target;
> > +my $makecmd;
> >  my $make;
> >  my $pre_install;
> >  my $post_install;
> > @@ -2198,6 +2199,11 @@ sub load_force_config {
> >      close IN;
> >  }
> >  
> > +sub mrproper {
> > +    run_command "$makecmd mrproper" or dodie "make mrproper for $builddir";
> > +    run_command "$make mrproper" or dodie "make mrproper for $outputdir";
> > +}
> > +
> >  sub build {
> >      my ($type) = @_;
> >  
> > @@ -2235,17 +2241,13 @@ sub build {
> >  	if (!$noclean) {
> >  	    run_command "mv $output_config $outputdir/config_temp" or
> >  		dodie "moving .config";
> > -
> > -	    run_command "$make mrproper" or dodie "make mrproper";
> > -
> > +	    mrproper;
> >  	    run_command "mv $outputdir/config_temp $output_config" or
> >  		dodie "moving config_temp";
> >  	}
> > -
> >      } elsif (!$noclean) {
> >  	unlink "$output_config";
> > -	run_command "$make mrproper" or
> > -	    dodie "make mrproper";
> > +	mrproper;
> >      }
> >  
> >      # add something to distinguish this build
> > @@ -3996,7 +3998,7 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
> >  
> >      undef %force_config;
> >  
> > -    my $makecmd = set_test_option("MAKE_CMD", $i);
> > +    $makecmd = set_test_option("MAKE_CMD", $i);
> >  
> >      $outputdir = set_test_option("OUTPUT_DIR", $i);
> >      $builddir = set_test_option("BUILD_DIR", $i);
>