Re: conditionally compiling C++ code

[Ronald Landheer-Cieslak]

AC_PROG_CXX checks whether it can find a working C++ compiler. Is it a 
problem to *know* this if you're not going to use it?

Optionally compiling files should be handled in your Makefile's 
precursers: Makefile.am if you're using Automake, or Makefile.in if not.

If you are using Automake, you should take a look at the AM_CONDITIONAL 
macro at File: automake.info,  Node: Conditionals

HTH

rlc

On Mon, 21 Apr 2003, Keith Bostic wrote:

> We just ran across the problem where you cannot conditionally
> call the AC_PROG_CXX macro, that is, we were doing:
> 
>       if test "$db_cv_cxx" = "yes"; then
>               AC_PROG_CXX
>       fi
> 
> and this broke when we upgraded to the autoconf 2.57 release.
> 
> I've seen some postings on the web discussing the problem, but
> I haven't seen any suggested workarounds.  Are there any?
> 
> Is there a "standard" way to optionally compile C++ code as well
> as C code when using autoconf?
> 
> Regards,
> --keith
> 
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