diff options
Diffstat (limited to 'libtool-ldflags')
-rwxr-xr-x | libtool-ldflags | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/libtool-ldflags b/libtool-ldflags new file mode 100755 index 000000000..e32e37bf1 --- /dev/null +++ b/libtool-ldflags @@ -0,0 +1,106 @@ +#! /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= +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" |