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#! /bin/sh
# Script to translate LDFLAGS into a form suitable for use with libtool.
# Copyright (C) 2005 Free Software Foundation, Inc.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
# Contributed by CodeSourcery, LLC.
# This script is designed to be used from a Makefile that uses libtool
# to build libraries as follows:
#
# LTLDFLAGS = $(shell libtool-ldflags $(LDFLAGS))
#
# Then, use (LTLDFLAGS) in place of $(LDFLAGS) in your link line.
# The output of the script. This string is built up as we process the
# arguments.
result=
for arg; do
# Even though the arguments are "linker flags", they are designed
# to be passed to the GCC driver. We do not want libtool to
# prefix them with "-Wl," when providing them to the driver,
# because then the driver will pass them on to the linker without
# looking at them. Instead, we want the driver itself to see
# these options.
result="$result -Xcompiler"
# If $(LDFLAGS) is (say):
# a "b'c d" e
# then the user expects that:
# $(LD) $(LDFLAGS)
# will pass three arguments to $(LD):
# 1) a
# 2) b'c d
# 3) e
# We must ensure, therefore, that the arguments are appropriately
# quoted so that using:
# libtool --mode=link ... $(LTLDFLAGS)
# will result in the same number of arguments being passed to
# libtool. In other words, when this script was invoked, the shell
# removed one level of quoting, present in $(LDFLAGS); we have to put
# it back.
# Quote the argument, using single quotes -- after replacing any
# embedded single quotes with:
# '"'"'
# which will preserve the single quotes in the output.
# The following command creates the script:
# s|'|'"'"'|g
sed_script="s|'|'\"'\"'|g"
# Quote the argument.
quoted_arg="'`echo "$arg" | sed -e "$sed_script"`'"
# Add it to the string.
result="$result $quoted_arg"
done
# Output the string we have built up.
echo "$result"
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