3 # Script to translate LDFLAGS into a form suitable for use with libtool.
5 # Copyright (C) 2005 Free Software Foundation, Inc.
7 # This file is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 # Contributed by CodeSourcery, LLC.
24 # This script is designed to be used from a Makefile that uses libtool
25 # to build libraries as follows:
27 # LTLDFLAGS = $(shell libtool-ldflags $(LDFLAGS))
29 # Then, use (LTLDFLAGS) in place of $(LDFLAGS) in your link line.
31 # The output of the script. This string is built up as we process the
40 # Libtool does not ascribe any special meaning options
41 # that begin with -f or with a double-dash. So, it will
42 # think these options are linker options, and prefix them
43 # with "-Wl,". Then, the compiler driver will ignore the
44 # options. So, we prefix these options with -Xcompiler to
45 # make clear to libtool that they are in fact compiler
48 -Xpreprocessor|-Xcompiler|-Xlinker)
49 # This option is already prefixed; don't prefix it again.
52 result="$result -Xcompiler"
57 # We do not want to add -Xcompiler to other options because
58 # that would prevent libtool itself from recognizing them.
63 # If $(LDFLAGS) is (say):
65 # then the user expects that:
67 # will pass three arguments to $(LD):
71 # We must ensure, therefore, that the arguments are appropriately
72 # quoted so that using:
73 # libtool --mode=link ... $(LTLDFLAGS)
74 # will result in the same number of arguments being passed to
75 # libtool. In other words, when this script was invoked, the shell
76 # removed one level of quoting, present in $(LDFLAGS); we have to put
79 # Quote any embedded single quotes.
82 # The following command creates the script:
84 # which removes a leading X, and then quotes and embedded single
86 sed_script="1s,^X,,;s|'|'\"'\"'|g"
87 # Add a leading "X" so that if $arg starts with a dash,
88 # the echo command will not try to interpret the argument
89 # as a command-line option.
91 # Generate the quoted string.
92 quoted_arg=`echo "$arg" | sed -e "$sed_script"`
98 # Surround the entire argument with single quotes.
99 quoted_arg="'"$quoted_arg"'"
101 # Add it to the string.
102 result="$result $quoted_arg"
105 # Output the string we have built up.