Added xbps-src and its associated code again.

It's better to keep it outside of XBPS.

--HG--
extra : convert_revision : 34f9c316585b972158d6ee55492c02c9bc5d3fcd

xbps-src/shutils/cross-compilation.sh

@@ -0,0 +1,70 @@
+#-
+# Copyright (c) 2008 Juan Romero Pardines.
+# All rights reserved.
+#
+# 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.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+#-
+
+#
+# This helper sets some required vars to be able to cross build
+# packages on xbps. The target is specified in the configuration file
+# and will be read any time the cross compilation flag is used.
+#
+[ -z "$XBPS_CROSS_TARGET" -o ! -d $XBPS_CROSS_DIR/bin ] && return 1
+
+# Check if all required bins are there.
+for bin in gcc g++ cpp ar as ranlib ld strip; do
+	if [ ! -x $XBPS_CROSS_DIR/bin/$XBPS_CROSS_TARGET-${bin} ]; then
+		msg_error "cross-compilation: cannot find ${bin}, aborting."
+	fi
+done
+
+SAVE_PATH="$PATH"
+if [ "$xbps_machine" = "x86_64" ]; then
+	XBPS_CROSS_HOST="x86_64-unknown-linux-gnu"
+else
+	XBPS_CROSS_HOST="$xbps_machine-pc-linux-gnu"
+fi
+
+cross_compile_setvars()
+{
+	export GCC=$XBPS_CROSS_TARGET-gcc
+	export CC=$XBPS_CROSS_TARGET-gcc
+	export CXX=$XBPS_CROSS_TARGET-g++
+	export CPP=$XBPS_CROSS_TARGET-cpp
+	export AR=$XBPS_CROSS_TARGET-ar
+	export AS=$XBPS_CROSS_TARGET-as
+	export RANLIB=$XBPS_CROSS_TARGET-ranlib
+	export LD=$XBPS_CROSS_TARGET-ld
+	export STRIP=$XBPS_CROSS_TARGET-strip
+	export PATH="$XBPS_CROSS_DIR/bin:$PATH"
+}
+
+cross_compile_unsetvars()
+{
+	unset GCC CC CXX CPP AR AS RANLIB LD STRIP PATH
+	export PATH="$SAVE_PATH"
+}
+
+if [ "$build_style" = "gnu_configure" ]; then
+	configure_args="--build=$XBPS_CROSS_HOST --host=$XBPS_CROSS_TARGET"
+	configure_args="$configure_args --target=$XBPS_CROSS_TARGET"
+fi