RFR(S): 8146639: Fix detection of Cups headers during configuration

[Erik Joelsson]

Nice fix, but it looks like a typo in libs-cups.m4 line 62. I think it 
should be ${with_cups_include}/cups/cups.h.

/Erik

On 2016-01-07 20:06, Volker Simonis wrote:
> Hi,
>
> can somebody please review and sponsor (needs regeneration of
> generated-configure.sh because of closed sources) the following small
> fix:
>
> http://cr.openjdk.java.net/~simonis/webrevs/2016/8146639/
> https://bugs.openjdk.java.net/browse/JDK-8146639
>
> Currently, if the location of the Cups headers is passed to configure
> via the --with-cups or --with-cups-inlcude option, the locations are
> not checked to really contain the required Cups header files. This
> will lead to a compilation error, if there are no Cups header files in
> the default include path.
>
> Even worse, if the user wants to specify special versions of the Cups
> header files via the --with-cups or --with-cups-inlcude options but
> mis-types the path while there exist Cups header files in the standard
> include path, the standard headers will be used silently (because the
> location given by --with-cups or --with-cups-inlcude isn't checked and
> rejected.)
>
> Thank you and best regards,
> Volker