Re: have headers & libs, but cannot configure/make

[John W. Eaton]

On 01/06/2017 11:19 AM, Mike Miller wrote:

> Ah right, forgot about required vs optional dependencies.
>
> So an extra argument to mark the library as required, which will impact
> both the usage AS_HELP_STRINGs and the error/warning if the library is
> disabled or not found or fails to pass the test? Seems good to me.

Yes, I checked in a couple of changes.  Now the configure script has

  OCTAVE_CHECK_LIB(pcre, PCRE,
    [], [pcre.h pcre/pcre.h], [pcre_compile], [], [], [],
    [libpcre], [REQUIRED])

the help text is

  --with-pcre-includedir=DIR
                          look for PCRE include files in DIR
  --with-pcre-libdir=DIR  look for PCRE libraries in DIR
  --with-pcre=<lib>       use PCRE library <lib>

and configure fails with an error message if the PCRE library is not 
found or if you try to use --without-pcre.

I hope this is fixed now.

jwe