[Libguestfs] use gnulib, and begin to pass its "make syntax-check" tests

[Jim Meyering]

Richard W.M. Jones wrote:
> On Mon, Aug 03, 2009 at 01:04:38PM +0200, Jim Meyering wrote:
>> Here's a patch series to make libguestfs use gnulib via a git submodule.
>> The first thing I did was to look at the failures from "make syntax-check"
>> and fix the config.h-related ones below.  The others are now
>> temporarily disabled via a variable in cfg.mk.
>
> In general, yes we need this, please commit it and 'make it work'.
> A couple of additional problems noted below:
>
>> * examples/to-xml.c: Likewise.
>> * examples/hello.c: Likewise.
>
> I'm dubious about adding <config.h> to these files, since they are
> supposed to be examples, and therefore should work outside the

I had doubts too.
One alternative is to exempt them by creating a file named
.x-sc_RULE_NAME and listing the exempted names therein.

One other alternative: guard the #inclusion:

  #if HAVE_CONFIG_H
  # include <config.h>
  #endif

What do you prefer?

> project.  If people were to copy these files somewhere, then they
> would fail to compile or (perhaps worse) include some random config.h
> header.
>
>> +# |grep -vE '^(qsort|if|close|assert|fputc|free|N_|vir.*GetName|.*Unlock|virNodeListDevices|virHashRemoveEntry|freeaddrinfo|.*[fF]ree|xdrmem_create|xmlXPathFreeObject|virUUIDFormat|openvzSetProgramSentinal|polkit_action_unref)$'
>> +
>> +msg_gen_function =
>> +msg_gen_function += DEBUG0
>> +msg_gen_function += DISABLE_fprintf
>> +msg_gen_function += ERROR
>> +msg_gen_function += ERROR0
>> +msg_gen_function += REMOTE_DEBUG
>> +msg_gen_function += ReportError
>> +msg_gen_function += VIR_FREE
>> +msg_gen_function += VIR_INFO
>> +msg_gen_function += VIR_USE_CPU
>
> libvirt specific?

Yes.  Good catch.
I'll remove those before pushing.