! /bin/sh

# Script to translate LDFLAGS into a form suitable for use with libtool.

# Copyright © 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= prev_arg=

for arg do

case $arg in
    -f*|--*)
        # Libtool does not ascribe any special meaning options
        # that begin with -f or with a double-dash.  So, it will
        # think these options are linker options, and prefix them
        # with "-Wl,".  Then, the compiler driver will ignore the
        # options.  So, we prefix these options with -Xcompiler to
        # make clear to libtool that they are in fact compiler
        # options.
        case $prev_arg in
            -Xpreprocessor|-Xcompiler|-Xlinker)
                # This option is already prefixed; don't prefix it again.
                ;;
            *)
                result="$result -Xcompiler"
                ;;
        esac
        ;;
    *)
        # We do not want to add -Xcompiler to other options because
        # that would prevent libtool itself from recognizing them.
        ;;
esac
prev_arg=$arg

# 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 any embedded single quotes.
case $arg in
    *"'"*)
        # The following command creates the script:
        #   1s,^X,,;s|'|'"'"'|g
        # which removes a leading X, and then quotes and embedded single
        # quotes.
        sed_script="1s,^X,,;s|'|'\"'\"'|g"
        # Add a leading "X" so that if $arg starts with a dash,
        # the echo command will not try to interpret the argument
        # as a command-line option.
        arg="X$arg"
        # Generate the quoted string.
        quoted_arg=`echo "$arg" | sed -e "$sed_script"`
        ;;
    *)
        quoted_arg=$arg
        ;;
esac
# Surround the entire argument with single quotes.
quoted_arg="'"$quoted_arg"'" 

# Add it to the string.
result="$result $quoted_arg"

done

# Output the string we have built up. echo “$result”