# $Id$

PortSystem 1.0
PortGroup cmake 1.0

name                flann
version             1.8.4
revision            3
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.
homepage            http://people.cs.ubc.ca/~mariusm/index.php/FLANN/FLANN
platforms           darwin
license             BSD
master_sites        http://people.cs.ubc.ca/~mariusm/uploads/FLANN/
distname            ${name}-${version}-src
use_zip             yes
extract.mkdir       yes
checksums           md5     a0ecd46be2ee11a68d2a7d9c6b4ce701 \
                    sha1    e03d9d458757f70f6af1d330ff453e3621550a4f \
                    rmd160  2f067dbe1ad583188a0ef587a13cc3e6179d88b6
depends_lib         port:hdf5-18
patchfiles          patch-src-python-CMakeLists.txt.diff patch-CMakeLists.txt.diff
patch.dir           ${worksrcpath}/${worksrcdir}

# MPI support is automatically disabled if hdf5-18 is installed without the +openmpi variant
configure.args-append ${distname} -DBUILD_MATLAB_BINDINGS=OFF -DUSE_MPI=ON -DBUILD_CUDA_LIB=OFF \
                    -DMPIEXEC=${prefix}/lib/openmpi/bin/mpiexec \
                    -DMPI_COMPILER=${prefix}/lib/openmpi/bin/mpic++

set pythons_suffixes {26 27 31 32 33}

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
            }
        }
    }]
}

variant cuda description {Enable CUDA support} {
    configure.args-delete -DBUILD_CUDA_LIB=OFF
    configure.args-append -DBUILD_CUDA_LIB=ON
    # As of cmake 2.8.10, the host compiler used is passed on to nvcc.
    # Nvcc (at least versions 4.2 and 5.0) calls clang with the argument
    # "-dumpspecs" which is a gcc-ism. To avoid this problem force
    # llvm-gcc-4.2 to be the host compiler
    if {[string match "*clang*" ${configure.compiler}]} {
        configure.args-append -DCUDA_HOST_COMPILER=/usr/bin/llvm-gcc-4.2
    }
}

livecheck.type      regex
livecheck.url       ${homepage}
livecheck.regex     Version (\[0-9.\]+)