Re: how to use AC_LIB_LINKFLAGS with a multi-library package?

[Sam Steingold]

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Hi Bruno,

Bruno Haible wrote:
> 
>> How do I check for a package (ffcall) which consists of several
>> libraries (avcall and callback)?
>> I do not want to force the user to do pass the prefix twice:
>> "--with-avcall-prefix=/usr/local --with-callback-prefix=/usr/local"
>> I want "--with-ffcall-prefix=/usr/local" instead.
> 
> I agree, what you need is a 'configure --help' that proposes
> 
>   --with-ffcall-prefix[=DIR]  search for ffcall in DIR/include and DIR/lib
>   --without-ffcall-prefix     don't search for ffcall in includedir and libdir
> 
> I would use an AC_ARG_WITH that produces this help output and then assigns
> the value of the with_ffcall_prefix variable to with_avcall_prefix and
> with_callback_prefix.

the problem is that AC_LIB_LINKFLAGS_BODY does all the checking work AND
also calls AC_LIB_ARG_WITH.
I suggest that AC_LIB_LINKFLAGS_BODY is split into the checking part and
the arg-with part - then the checking part could be used with ffcall.m4

I also suggest that ffcall.m4 is added to gnulib (together with
sigsegv.m4 from clisp), just like iconv.m4 is in gnulib.

Sam.
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