# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)


from spack.package import *


class Rsbench(MakefilePackage):
    """A mini-app to represent the multipole resonance representation lookup
    cross section algorithm."""

    homepage = "https://github.com/ANL-CESAR/RSBench"
    url = "https://github.com/ANL-CESAR/RSBench/archive/v2.tar.gz"

    version("13", sha256="4ddba1fe2f657103e5e50199b7dd2eab62069ddf17350489c18238908dd73b61")
    version("12", sha256="2e437dbdaf7bf12bb9ade429d46a9e74fd519fc4686777a452770790d0546499")
    version("2", sha256="1e97a38a863836e98cedc5cc669f8fdcaed905fafdc921d2bce32319b3e157ff")
    version("0", sha256="95c06cf4cb6f396f9964d5e4b58a477bf9d7131cd39804480f1cb74e9310b271")

    depends_on("c", type="build")  # generated
    depends_on("cxx", type="build")  # generated

    tags = ["proxy-app"]

    # To-Do: Add build support for other parallelism versions in v12:
    # CUDA, Sycl, OpenCL, OpenMP Offload

    @property
    def build_directory(self):
        if self.spec.satisfies("@:2"):
            return "src"
        return "openmp-threading"

    @property
    def build_targets(self):
        spec = self.spec
        targets = []

        cflags = "-std=gnu99 -O3"
        ldflags = "-lm"

        if spec.satisfies("%gcc"):
            cflags += " -ffast-math "
        elif spec.satisfies("%intel"):
            cflags += " -xhost -ansi-alias -no-prec-div "
        elif spec.satisfies("%nvhpc"):
            cflags += " -fastsse "
        elif spec.satisfies("%arm"):
            cflags += " -ffast-math "

        cflags += self.compiler.openmp_flag

        targets.append(f"CFLAGS={cflags}")
        targets.append(f"LDFLAGS={ldflags}")

        return targets

    def install(self, spec, prefix):
        mkdir(prefix.bin)
        install(join_path(self.build_directory, "rsbench"), prefix.bin)
