libpayload: Implement gcc wrappers for libpayload

libpayload uses a ton of flags and other scary gcc and ld options.  These
wrappers hide most of that from the user, so that using libpayload is as
easy as lpgcc -o hello hello.c

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3226 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

payloads/libpayload/bin/lp.functions

@@ -0,0 +1,60 @@
+## This file is part of the libpayload project.
+##
+## Copyright (C) 2008 Advanced Micro Devices, Inc.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted provided that the following conditions
+## are met:
+## 1. Redistributions of source code must retain the above copyright
+##    notice, this list of conditions and the following disclaimer.
+## 2. Redistributions in binary form must reproduce the above copyright
+##    notice, this list of conditions and the following disclaimer in the
+##    documentation and/or other materials provided with the distribution.
+## 3. The name of the author may not be used to endorse or promote products
+##    derived from this software without specific prior written permission.
+##
+## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+## ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+## SUCH DAMAGE.
+
+# Common functions used by the libpayload wrappers
+
+error() {
+	echo "Error: $1"
+	exit 1
+}
+
+warn() {
+	echo "Warning: $1"
+}
+
+# If the user didn't specify LIBPAYLOAD_PREFIX, then preload it
+# with the default prefix value
+
+if [ -z "$LIBPAYLOAD_PREFIX" ]; then
+	LIBPAYLOAD_PREFIX=$DEFAULT_PREFIX/libpayload
+fi
+
+# If we're lucky, then everything was installed correctly, and the
+# library is locatd in the same prefix as ourselves.  If not, then
+# use the value of LIBPAYLOAD_PREFIX
+
+if [ -f $BASE/../lib/libpayload.a ]; then
+	_LIBDIR=$BASE/../lib
+else
+	_LIBDIR=$LIBPAYLOAD_PREFIX/lib
+fi
+
+if [ -d $BASE/../include/ ]; then
+	_INCDIR=$BASE/../include
+else
+	_INCDIR=$LIBPAYLOAD_PREFIX/include
+fi