cross-pkg-config

#!/bin/sh
# Copyright 2013-2017 Azul Systems, Inc.  All Rights Reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License version 2 only, as published by
# the Free Software Foundation.
#
# This code 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 version 2 for more
# details (a copy is included in the LICENSE file that accompanied this code).
#
# You should have received a copy of the GNU General Public License version 2
# along with this work; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Please contact Azul Systems, 385 Moffett Park Drive, Suite 115, Sunnyvale,
# CA 94089 USA or visit www.azul.com if you need additional information or
# have any questions.
#
# Wrapper script that calls the real pkg-config with the relocated
# sysroot location
#
# Wrapper derived from raspberry crosstool and modified to take SYSROOT
# env variable from outside instead of computing via gcc -print-sysroot,
# which produces wrong output if called without CFLAGS which contain --sysroot
# Computing with CFLAGS not used, as pkg-config, in general, should not rely 
# on CC, CFLAGS, ...
# However, we need to CC env defined to compute pkg-config-real executable.
# CC could be not used, if this script placed in raspberry crosstool's bin/.
 
set -e

if [ ! $SYSROOT ] || [ ! $CC ]; then
	echo "No SYSROOT or CC env defined, exiting"
	exit 1
fi

GCC="$CC"
MACHINE=`"$GCC" -dumpmachine`

#GCC could contain version like xxx-gcc-4.8.3, assuming xxx is equal to machine name
PKG_CONFIG_REAL=${GCC%$MACHINE-*}$MACHINE-pkg-config-real

export PKG_CONFIG_DIR=
export PKG_CONFIG_LIBDIR="${SYSROOT}/usr/lib/${MACHINE}/pkgconfig":"${SYSROOT}/usr/lib/pkgconfig":"${SYSROOT}/usr/share/pkgconfig"
export PKG_CONFIG_SYSROOT_DIR="${SYSROOT}"

exec $PKG_CONFIG_REAL "$@"