Re:Re: [PATCH] buildrun: no sanitize $PATH for kbuild invocation

[Faicker Mo <mocan@ucloud.cn>]

Wei, Thank you.The problem is solved.
If we want systemtap to run on the newer kernel with centos 6, following these steps,
yum install centos-release-scl scl-utils
yum install devtoolset-7-gcc devtoolset-7-make  devtoolset-7-systemtap
scl enable devtoolset-7 bash
stap -g -vv -B CC=/opt/rh/devtoolset-7/root/usr/bin/gcc a.stp


> -----原始邮件-----
> 发件人: wyang <w90p710@gmail.com>
> 发送时间: 2018年12月26日 星期三
> 收件人: "faicker.mo" <faicker.mo@ucloud.cn>, systemtap@sourceware.org
> 抄送: 
> 主题: Re: [PATCH] buildrun: no sanitize $PATH for kbuild invocation
> 
> Please try to use -B, you can pass option to kbuild.
> 
> Wei
> 
> 
> On 2018/12/21 下午4:08, faicker.mo wrote:
> > From: "faicker.mo" <faicker.mo@ucloud.cn>
> >
> > For newer kernel, SCL with newer gcc and systemtap prepends
> > it's directory to the $PATH to take effect.  It doesn't work
> > if $PATH is sanitized (prefixed with /usr/bin:/bin:)
> >
> > Fixes e8474d2a
> >
> > Signed-off-by: faicker.mo <faicker.mo@ucloud.cn>
> > ---
> >   buildrun.cxx | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/buildrun.cxx b/buildrun.cxx
> > index cef14ad..dcdb6e8 100644
> > --- a/buildrun.cxx
> > +++ b/buildrun.cxx
> > @@ -99,7 +99,7 @@ make_any_make_cmd(systemtap_session& s, const string& dir, const string& target)
> >     const char *oldpath = getenv("PATH");
> >     if (oldpath != NULL)
> >       {
> > -      newpath += ':';
> > +      newpath = "PATH=";
> >         newpath += oldpath;
> >       }
> >   
>