Re: [Groff] Fw: ac_ext problems

[Keith Marshall]

On Friday 06 May 2005 8:09 pm, Zvezdan Petkovic wrote:
> Obviously only gmake recognizes .cpp as a C++ file on a Unix system.
> With older version of gmake on a different Unix machine .cpp has not
> been recognized.

This is precisely the reason why I suggested a slightly more sophisticated 
patch, than the one which has actually been applied.

In current autoconf CVS, in the AC_LANG(C++) macro in lib/autoconf/c.m4,
I now see `ac_ext=cpp', where previously I saw `ac_ext=cc'.  Had that been 
defined instead, as `ac_ext=${ac_ext_cc-"cpp"}', or something similar, (it 
might need to be `ac_ext=$[]{ac_ext_cc-"cpp"}' for proper quoting), then you 
could have used an entry in config.site, such as `ac_ext_cc=cc', to restore 
the previous behaviour for your system.

Regards,
Keith.