#!/usr/bin/env python

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Copyright 2010 California Institute of Technology. ALL RIGHTS RESERVED.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# United States Government Sponsorship acknowledged. This software is subject to
# U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
# (No [Export] License Required except when exporting to an embargoed country,
# end user, or in support of a prohibited end use). By downloading this software,
# the user agrees to comply with all applicable U.S. export laws and regulations.
# The user has the responsibility to obtain export licenses, or other export
# authority as may be required before exporting this software to any 'EAR99'
# embargoed foreign country or citizen of those countries.
#
# Author: Giangi Sacco
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~




import os

Import('envGPUampcor')
package = envGPUampcor['PACKAGE']
project = envGPUampcor['PROJECT']
build = envGPUampcor['PRJ_SCONS_BUILD'] + '/' + package + '/' + project + '/src'
listFiles=['GPUamp.cu']
if envGPUampcor['GPU_ACC_ENABLED']:
    envGPUampcor.Install(build,listFiles)
    envGPUampcor.Alias('build', build)

    # Need to execute particular commands for Ampcor given its design, so build the objects directly into the build directory and link
    # them in the src/SConscript
    build_base = "nvcc "
    if 'NVCC_CCBIN' in envGPUampcor:
        print('User requested specific system compiler for nvcc.')
        build_base += "-ccbin " + envGPUampcor['NVCC_CCBIN'] + " "
    else:
        print('Assuming default system compiler for nvcc.')
    build_base += "-shared -Xcompiler -fPIC -O3 "
    build_cmd = build_base + "-dc -m64 -o $TARGET -c $SOURCE"
    built_path = os.path.join(build, 'gpu-ampcor.o')
    linked_path = os.path.join(build, 'gpu-ampcor-linked.o')
    envGPUampcor.Command(built_path, 'GPUamp.cu', build_cmd)
    link_cmd = build_base + "-dlink $SOURCE -o $TARGET -lcublas_static -lcufft_static -lculibos -lcublas_device -lcudart -lcudadevrt"
    envGPUampcor.Command(linked_path, built_path, link_cmd)