# $Id: Portfile 152074 2016-08-28 20:45:39Z mmoll@macports.org $

PortSystem 1.0
PortGroup cmake 1.0
PortGroup mpi 1.0
PortGroup github 1.0
cmake.out_of_source yes

github.setup        mariusmuja flann 1.9.1
revision            1
categories          science devel
maintainers         mmoll
description         Fast Library for Approximate Nearest Neighbors
long_description    FLANN is a library for performing fast approximate \
                    nearest neighbor searches in high dimensional spaces. \
                    It contains a collection of algorithms we found to \
                    work best for nearest neighbor search and a system \
                    for automatically choosing the best algorithm and \
                    optimum parameters depending on the dataset.
platforms           darwin
license             BSD
checksums           md5     9583ae34a3fd05b730f312c416ebdda7 \
                    sha1    bb65830d02d6603137f55901aea561944086f5d5 \
                    rmd160  05758ce066371c6d9734fcfeec248f8c252585ff
depends_lib         port:hdf5 port:lz4
patchfiles          patch-src-python-CMakeLists.txt.diff
mpi.setup

configure.args-append ${distname} -DBUILD_MATLAB_BINDINGS=OFF -DUSE_MPI=OFF -DBUILD_CUDA_LIB=OFF

if {[ mpi_variant_isset ]} {
    configure.args-delete       -DUSE_MPI=OFF
    configure.args-append       -DUSE_MPI=ON
}

set pythons_suffixes {27 34 35}

set pythons_ports {}
foreach s ${pythons_suffixes} {
    lappend pythons_ports python${s}
}

proc python_dir {} {
    global pythons_suffixes
    foreach s ${pythons_suffixes} {
        if {[variant_isset python${s}]} {
            set p python[string index ${s} 0].[string index ${s} 1]
            return [file normalize [exec ${p} -c "import sys; print(sys.prefix)"]/lib/${p}]
        }
    }
    error "Python support not enabled."
}

foreach s ${pythons_suffixes} {
    set p python${s}
    set v [string index ${s} 0].[string index ${s} 1]
    set i [lsearch -exact ${pythons_ports} ${p}]
    set c [lreplace ${pythons_ports} ${i} ${i}]
    eval [subst {
        variant ${p} description "Use Python ${v} for python bindings" conflicts ${c} {
            depends_lib-append      port:${p}
            configure.args-append   -DPYTHON_EXECUTABLE=${prefix}/bin/python${v}
            post-patch {
                reinplace "s|@@PREFIX@@|${destroot}${prefix}|g" ${patch.dir}/src/python/CMakeLists.txt
                set pylibdir \[python_dir\]
                reinplace "s|@@PYTHON_LIB@@|${destroot}\${pylibdir}|g" ${patch.dir}/src/python/CMakeLists.txt
            }
        }
    }]
}