[Xen-devel] Re: [Xen-staging] [xen-unstable] If we find a Linux repository in $(LINUX_SRC_PATH) then symlink it

[Alex Williamson <alex.williamson@xxxxxx>]

On Mon, 2007-06-04 at 23:03 +0100, Ian Campbell wrote:
> 
> Are you sure?

   Yup.

> $ ls
> COPYING    Config.mk.orig  Makefile  buildconfigs/  config/  extras/      
> patches/  unmodified_drivers/
> Config.mk  Config.mk~      README    commitmsg~     docs/    install.sh*  
> tools/    xen/
> $ make linux-2.6-xen0-prep
> [...snip...]
> select-repository: Searching `.:..' for linux-2.6.18-xen.hg
> select-repository: Ignoring `.'
> select-repository: Found ../linux-2.6.18-xen.hg
> Linking ../linux-2.6.18-xen.hg to linux-2.6.18-xen.hg.
> $ ls -l
> [...snip...]
> lrwxrwxrwx   1 ianc xendev    22 Jun  4 22:55 linux-2.6.18-xen.hg -> 
> ../linux-2.6.18-xen.hg/
> 
> versus (in the same directory)
> 
> $ make distclean
> $ ls
> COPYING    Config.mk.orig  Makefile  buildconfigs/  config/  extras/      
> patches/  unmodified_drivers/
> Config.mk  Config.mk~      README    commitmsg~     docs/    install.sh*  
> tools/    xen/
> $ LINUX_SRC_PATH='' make linux-2.6-xen0-prep
> select-repository: Found http://hg.uk.xensource.com/linux-2.6.18-xen.hg
> Cloning http://hg.uk.xensource.com/linux-2.6.18-xen.hg to linux-2.6.18-xen.hg.

You're cloning from a remote repo, mine is local on disk:

#:~$ hg clone ~/xen-upstream/staging/xen-unstable.hg test
2979 files updated, 0 files merged, 0 files removed, 0 files unresolved
#:~$ cd test
#:~/test$ LINUX_SRC_PATH='' make linux-2.6-xen0-prep
make -f buildconfigs/mk.linux-2.6-xen0 prep
make[1]: Entering directory `/home/awilliam/test'
set -e ; \
        if [ ! -e linux-2.6.18-xen.hg/.hg ] ; then \
            __repo=$(sh buildconfigs/select-repository linux-2.6.18-xen.hg ) ; \
            if [ -d ${__repo} ] ; then \
                echo "Linking ${__repo} to linux-2.6.18-xen.hg." ; \
                ln -s ${__repo} linux-2.6.18-xen.hg ; \
            else \
                echo "Cloning ${__repo} to linux-2.6.18-xen.hg." ; \
                hg clone ${__repo} linux-2.6.18-xen.hg ; \
            fi ; \
        else \
            __parent=$(hg -R linux-2.6.18-xen.hg path default) ; \
            echo "Pulling changes from ${__parent} into linux-2.6.18-xen.hg." ; 
\
            hg -R linux-2.6.18-xen.hg pull ${__parent} ; \
        fi
select-repository: Found /home/awilliam/xen-upstream/staging/linux-2.6.18-xen.hg
Linking /home/awilliam/xen-upstream/staging/linux-2.6.18-xen.hg to 
linux-2.6.18-xen.hg.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

#:~/test$ ls -l
...
lrwxrwxrwx  1 awilliam awilliam    55 2007-06-04 16:11 linux-2.6.18-xen.hg -> 
/home/awilliam/xen-upstream/staging/linux-2.6.18-xen.hg

#:~test$ ls -l ~/xen-upstream/staging
drwxr-xr-x 21 awilliam awilliam 4096 2007-06-04 12:36 linux-2.6.18-xen.hg
drwxr-xr-x 10 awilliam awilliam 4096 2007-06-04 12:32 xen-unstable.hg

I would think this is a pretty standard development setup.  With the
number of trees I go through in a day, I certainly don't want to have to
keep them remote in order to get a cloned copy.

> $ ls -l 
> [...snip...]
> drwxr-xr-x   3 ianc xendev    72 Jun  4 22:57 linux-2.6.18-xen.hg/
> 
> I think you are saying that you have a directory 'working' which is
> parented off a pristine '../xen-unstable.hg'. Therefore it should
> calculate the parent Linux repository as being
> '../linux-2.6.18-xen.hg'
> and clone that, since it won't find it via LINUX_SRC_PATH which is ''.

   It finds it via the hg path, not the search path.  Thanks,

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.


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