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#!/bin/sh
# Copyright 2008-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
#
# This creates a pkg-config frontend that has the form TARGET-pkg-config
# as this is the utility that autoconf scripts will automatically search
# for when cross-compiling for TARGET. Here we setup the pkg config env
# paths so that the .pc files that are searched and used come from the
# staging directory rather than the host system.
#
#
# Helper functions. So very helpful.
#
msg_to_stderr() { echo "cross-pkg-config: $*" 1>&2 ; }
warn() { msg_to_stderr "warning: $*" ; }
error() {
msg_to_stderr "error: $*"
exit 1
}
#
# Sanity/distro checks
#
MIN_VER="0.23" # needs PKG_CONFIG_SYSROOT_DIR
if ! pkg-config --atleast-pkgconfig-version ${MIN_VER} ; then
error pkg-config is too old ... upgrade to at least v${MIN_VER}
fi
if [ "$1" = "--cross-pkg-config-install" ] ; then
# --cross-pkg-config-install <sysroot dir> [pkg-config wrapper]
pkg_path="$2"
pkg_config="${3:-$0}"
sed -i.tmp \
-e "s:@CROSS_PKG_CONFIG_INSTALLED@:installed:" \
-e "s:@CROSS_PKG_CONFIG_PATH@:$pkg_path:" \
"$pkg_config"
rm -f "$pkg_config".tmp
chmod a+rx "$pkg_config"
exit 0
fi
unset EXTRA_PKG_CONFIG_LIBDIR
if [ "@CROSS_PKG_CONFIG_INSTALLED@" = "installed" ] ; then
# Manual install
SYSROOT="@CROSS_PKG_CONFIG_PATH@"
elif [ -n "${ROOT}" ] ; then
# Gentoo
SYSROOT=${ROOT}
elif [ -n "${STAGEDIR}" ] ; then
# uClinux-dist
SYSROOT=${STAGEDIR}
EXTRA_PKG_CONFIG_LIBDIR=${UCLINUX_PKG_CONFIG_LIBDIR}
else
# /usr/<target>
CHOST=${0##*/}
CHOST=${CHOST%-pkg-config}
SYSROOT="/usr/${CHOST}"
if [ -z "${CHOST}" ] || [ ! -d "${SYSROOT}" ] ; then
error "Need \$ROOT or \$STAGEDIR set first"
fi
fi
# abort infinite loop due to misconfiguration
[ "${0##*/}" = "pkg-config" ] && error "aborting infinite loop! (make sure to delete uClinux-dist/tools/pkg-config)"
#
# Some distributions pollute the pkg-config environment.
# Time to pull a captain planet on them.
#
unset PKG_CONFIG_PATH
unset PKG_CONFIG_ALLOW_SYSTEM_CFLAGS
unset PKG_CONFIG_ALLOW_SYSTEM_LIBS
#
# Set the pkg-config search paths to our staging directory.
#
export PKG_CONFIG_LIBDIR="${SYSROOT}/usr/lib/pkgconfig:${SYSROOT}/usr/share/pkgconfig"
if [ -n "${EXTRA_PKG_CONFIG_LIBDIR}" ] ; then
PKG_CONFIG_LIBDIR="${EXTRA_PKG_CONFIG_LIBDIR}:${PKG_CONFIG_LIBDIR}"
fi
#
# This guy is horribly broken in pkg-config <=0.23:
# https://bugs.freedesktop.org/show_bug.cgi?id=16905
#
#export PKG_CONFIG_SYSROOT_DIR="${SYSROOT}"
unset PKG_CONFIG_SYSROOT_DIR
#
# Sanity check the output to catch common errors that do not
# cause failures until much later on.
#
output=$(pkg-config "$@")
ret=$?
#
# Inject PKG_CONFIG_SYSROOT_DIR ourselves until pkg-config is fixed.
# We can't mung the .pc files as some of the vars are used at compile
# time to encode runtime paths.
#
output=$(echo "${output}" | sed -e 's:\(-[IL][[:space:]]*\)\(/usr\):\1'"${SYSROOT}"'\2:g')
# We turn the output into a newline separate string of options, then use grep
# to look for bad -Is and -Ls. Bad -Is and -Ls are ones that point to things
# outside the ${SYSROOT}.
bad_lines=$(echo "$output" | # Get the pkg-config output.
tr -s ' ' | tr ' ' '\n' | # Put each flags on its own line.
grep -E '^(-L|-I)' | # Find all -I and -L lines.
grep -v -E "..:?${SYSROOT}" # Find all things outside the SYSROOT.
)
if [ -n "$bad_lines" ]; then
warn "### falling down so here is a dump state ######"
pkg-config --debug "$@" 1>&2
warn "### end of dump ###############################"
warn "### suspicious compile flags dumped here ######"
echo "$bad_lines"
warn "### end of flag dump ##########################"
error "host -I or -L paths detected: ${output}"
fi
[ -n "${output}" ] && echo "${output}"
exit ${ret}
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