Re: [Qemu-devel] [PATCH v3 0/5] Various improvements/bugfixes to submodule handling

[Alexey Kardashevskiy <aik@ozlabs.ru>]

On 06/11/17 11:22, Alexey Kardashevskiy wrote:
> On 04/11/17 02:33, Daniel P. Berrange wrote:
>> This short series of patches improves the reliability of the submodule
>> handling to cope with various dev env scenarios that have since emerged
>>
>>   v2: https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg06272.html
>>
>> Changed in v3:
>>
>>  - Avoid use of mktemp
>>  - Use '=' instead of '==' (bashism) in conditional tests
>>  - Fix problem with short-circuiting for empty submodule list
>>  - Ensure help message is displayed on all errors
>>
>> Daniel P. Berrange (5):
>>   build: allow setting a custom GIT binary for transparent proxying
>>   build: don't create temporary files in source dir
>>   build: allow automatic git submodule updates to be disabled
>>   build: don't fail if given a git submodule which does not exist
>>   build: delay check for empty git submodule list
>>
>>  Makefile                 | 15 ++++++++--
>>  configure                | 12 ++++++++
>>  scripts/git-submodule.sh | 72 ++++++++++++++++++++++++++++++++++++++----------
>>  3 files changed, 83 insertions(+), 16 deletions(-)
> 
> 
> It is getting more complicated.
> 
> So, same setup,
> git checkout v2.10.0
> ./configure --target-list=ppc64-softmmu
> make
> 
> All good.
> Then:
> 
> git checkout git-submodule (upstream + this patchset)
> ./configure --target-list=ppc64-softmmu
> 
> I see an error and educational page about --disable-git-update, good.
> ./configure --target-list=ppc64-softmmu --disable-git-update
> make
> 
> Now I get:
> 
> GIT submodule checkout is out of date. Please run
>   scripts/git-submodule.sh update ui/keycodemapdb dtc capstone
> from the source directory checkout /home/aik/p/qemu
> 
> Good, as I wanted.
> I do this on the server:
> scripts/git-submodule.sh update ui/keycodemapdb dtc capstone
> 
> and repeat "make" on the build machine but get the very same error. Then I
> add "set -x" to scripts/git-submodule.sh and see:
> 
> + substat=.git-submodule-status
> + command=status
> + shift
> + maybe_modules=ui/keycodemapdb dtc capstone
> + test -z git
> + modules=
> + git submodule status ui/keycodemapdb
> + test 0 = 0
> + modules= ui/keycodemapdb
> + git submodule status dtc
> + test 0 = 0
> + modules= ui/keycodemapdb dtc
> + git submodule status capstone
> + test 0 = 0
> + modules= ui/keycodemapdb dtc capstone
> + test -n ui/keycodemapdb dtc capstone
> + test -e .git
> + test -z ui/keycodemapdb dtc capstone
> + test -f .git-submodule-status
> + git submodule status ui/keycodemapdb dtc capstone
> + CURSTATUS=-22ead3e0bfdb87516656453336160e0a37b066bf capstone
>  558cd81bdd432769b59bff01240c44f82cfb1a9d dtc (v1.4.4)
>  10739aa26051a5d49d88132604539d3ed085e72e ui/keycodemapdb (heads/master)
> 
> + cat .git-submodule-status
> + OLDSTATUS= 558cd81bdd432769b59bff01240c44f82cfb1a9d dtc (v1.4.4)
>  10739aa26051a5d49d88132604539d3ed085e72e ui/keycodemapdb (heads/master)
> 
> + test -22ead3e0bfdb87516656453336160e0a37b066bf capstone
>  558cd81bdd432769b59bff01240c44f82cfb1a9d dtc (v1.4.4)
>  10739aa26051a5d49d88132604539d3ed085e72e ui/keycodemapdb (heads/master) =
> 558cd81bdd432769b59bff01240c44f82cfb1a9d dtc (v1.4.4)
>  10739aa26051a5d49d88132604539d3ed085e72e ui/keycodemapdb (heads/master)
> 
> + exit 1
> 
> 
> What is that new module - capstone - about? It is not in the status file:
> 
> [vpl1 qemu]$ cat .git-submodule-status
>  558cd81bdd432769b59bff01240c44f82cfb1a9d dtc (v1.4.4)
>  10739aa26051a5d49d88132604539d3ed085e72e ui/keycodemapdb (heads/master)

Ufff, that was inaccurate me, sorry for the noise. This is a real thing:


[vpl1 qemu]$ git submodule status capstone
 22ead3e0bfdb87516656453336160e0a37b066bf capstone (3.0.5-rc3-14-g22ead3e0)
[vpl1 qemu]$ ssh garrison2 git -C p/qemu submodule status capstone
 22ead3e0bfdb87516656453336160e0a37b066bf capstone (3.0.5-rc3-14-g22ead3e)


So now I have to add this to .gitconfig on all build machines:

[core]
        abbrev=10

as "git submodule status" simply calls "git describe" which does not take
"--abbrev". Well, ok :(



-- 
Alexey