#! /bin/bash
# ld --- This script sanitizes the input to the system linker so that NAG
# Fortran RTL components are not unnecessarily part of shared objects.
#
# Copyright  (C)  2022  Thomas Jahns <jahns@dkrz.de>
#
# Version: 1.0
# Author: Thomas Jahns <jahns@dkrz.de>
# Keywords:
# Maintainer: Thomas Jahns <jahns@dkrz.de>
# URL: https://swprojects.dkrz.de/redmine/projects/yaxt
#
# Redistribution and use in source and binary forms, with or without
# modification, are  permitted provided that the following conditions are
# met:
#
# Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# Neither the name of the DKRZ GmbH nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
# OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
case " $* " in
  (*\ -shared\ *)
    ld_args=()
    for arg
    do
      case $arg in
        (/*/NAG_Fortran/*.[ao])
        # skip rtl components only needed if we wanted to use the
        # library with another compiler
        ;;
        (/*.[oa])
          if nm "$arg" | grep '^[0-9a-fA-F]\{8,16\} T __NAGf90' >/dev/null ; then
            :
          else
            ld_args+=("$arg")
          fi
          ;;
        (*)
          ld_args+=("$arg")
          ;;
      esac
    done
    ;;
  (*)
    ld_args=("$@")
    ;;
esac
ld_wrap_dir=${BASH_SOURCE[0]%/*}
PATH=":${PATH}:"
PATH=${PATH/:$ld_wrap_dir:/:}
PATH=${PATH:1:${#PATH}-1}
exec ld "${ld_args[@]}"
#
# Local Variables:
# mode: sh
# license-project-url: "https://swprojects.dkrz.de/redmine/projects/yaxt"
# license-default: "bsd"
# End:
#
