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authorBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
committerBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libtool-ldflags
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libtool-ldflags')
-rwxr-xr-xgcc-4.9/libtool-ldflags106
1 files changed, 106 insertions, 0 deletions
diff --git a/gcc-4.9/libtool-ldflags b/gcc-4.9/libtool-ldflags
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@@ -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"