Wireshark · Wireshark-dev: Re: [Wireshark-dev] configure.in:1562 missing plugins/Custom.m4

[Guy Harris <guy@xxxxxxxxxxxx>]

On Nov 14, 2008, at 5:14 PM, Michael A. McCartney wrote:
> Michael A. McCartney wrote:
>
> > Building on RHL4, upgraded to latest source
> > and now get the following...
> >
> > $ ./autogen.sh
> > Checking for python.
> > aclocal -I ./aclocal-fallback
> > configure.in:1562: file `plugins/Custom.m4' does not exist
>
> @@ -1559,7 +1559,7 @@
> dnl Save the cacheable configure results to config.cache before  
> recursing
> AC_CACHE_SAVE
>
> -sinclude(plugins/Custom.m4) dnl
> +####sinclude(plugins/Custom.m4) dnl

To quote

	http://www.gnu.org/software/m4/manual/m4.html

section 9.1:

	If file does not exist, is a directory, or cannot otherwise be read,  
the expansion is void, and include will fail with an error while  
sinclude is silent. The empty string counts as a file that does not  
exist.

What part of "is silent" does the version of M4 that comes with RHL4  
not understand?  What does "m4 --version" print on your RHL4 system?

(It works on my Mac OS X 10.5.x system, with GNU M4 1.4.6, even  
without plugins/Custom.m4; presumably the intent is to allow somebody  
to create a Custom.m4 file if they need it for a plugin, and have it  
be included if it's present, without *requiring* it to be there.)