use ExtUtils::MakeMaker;

print <<EOF;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


OpenCL does not have good backwards compatibility - for example, the only
way to create a 2D image in OpenCL 1.1 is clCreateImage2D, which is not
available anymore with OpenCL 1.2.

The OpenCL module can often emulate OpenCL 1.1 functions using OpenCL 1.2
functions, but even though your OpenCL library might contain the OpenCL
1.2 functions, they might be nonfunctional and crash.

Do you want to prefer the OpenCL 1.1 API over the 1.2 API where possible?

EOF

my $DEFINE = " -DPREFER_1_1=" . (0 + (prompt ("Prefer OpenCL 1.1 over 1.2 functions (y/n)?", "y") =~ /[yY]/));

print <<EOF;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


This module needs to link against both the OpenCL and pthread libraries
(even on windows). If you wish you can override the LIBS argument now. If
not, just press enter to accept the default.

EOF

my $LIBS = prompt "Value for LIBS?", "-lOpenCL -lpthread";

print <<EOF;

*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


Sometimes you need to define extra compilation options (for example, the
hypothetical OpenCL 1.3 header files might require you to define something
like CL_USE_DEPRECATED_OPENCL_1_2_APIS). You can do this here, or simply
press enter.

EOF

my $EXTRADEFS = prompt "Any extra -D options?", "";

WriteMakefile(
    dist	=> {
	            PREOP	=> 'pod2text OpenCL.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;',
	            COMPRESS	=> 'gzip -9v',
	            SUFFIX	=> '.gz',
	           },
    PREREQ_PM => {
       common::sense    => 3,
       Async::Interrupt => 1.1,
    },
    DEFINE => "$DEFINE $EXTRADEFS",
    NAME => "OpenCL",
    VERSION_FROM => "OpenCL.pm",
    LIBS => [$LIBS],
);