Add crossbuild test script

scripts/crossbuild.sh

@@ -0,0 +1,72 @@
+#!/bin/sh
+
+# Cross compile test for https://github.com/FreeBSDDesktop/kms-drm
+# Execute as non-root in root folder of repo
+
+# Requires:
+# pkg install devel/powerpc64-xtoolchain-gcc (gcc in base is too old)
+# cd /usr/src; make kernel-toolchain TARGET_ARCH=aarch64
+
+
+CLEAN=no
+UPDATE=no
+PWD=`pwd`
+OBJDIRPREFIX=/tmp/kms-drm
+
+while [ "$1" != "" ]; do
+    ARG=`echo $1 | awk -F= '{print $1}'`
+    VAL=`echo $1 | awk -F= '{print $2}'`
+    echo Got ${ARG}=${VAL}
+    case $ARG in
+        clean)
+            CLEAN=yes
+            ;;
+        update-toolchains)
+            UPDATE=yes
+            ;;
+        *)
+            echo "ERROR: unknown argument \"$ARG\""
+            exit 1
+            ;;
+    esac
+    shift
+done
+
+if [ ${CLEAN} == "no" ]; then
+	CMD="/bin/sh -c 'cd ${PWD}; make -s -j8'"
+else
+	CMD="/bin/sh -c 'cd ${PWD}; make clean cleandepend -s -j16; make -s -j8'"
+fi
+
+if [ ${UPDATE} == "yes" ]; then
+	sudo pkg install -y devel/powerpc64-xtoolchain-gcc
+	cd /usr/src && sudo make -s -j8 kernel-toolchain TARGET_ARCH=aarch64 || exit 1
+	cd ${PWD}
+fi
+
+SUCCESS=
+FAIL=
+
+dobuild()
+{
+	local target=$1
+	local options=$2
+
+	echo "Building ${target} ${options}..."
+
+	(cd /usr/src; make buildenv MAKEOBJDIRPREFIX=${OBJDIRPREFIX}-${target} TARGET_ARCH=${target} ${options} BUILDENV_SHELL="${CMD}") \
+		&& SUCCESS="${SUCCESS} ${target}" || FAIL="${FAIL} ${target}"
+}
+
+#       TARGET		OPTIONS
+dobuild "amd64"
+dobuild "i386"
+dobuild "powerpc64"	"CROSS_TOOLCHAIN=powerpc64-gcc"
+dobuild "aarch64"
+
+echo
+echo SUCCESS: ${SUCCESS}
+echo FAIL: ${FAIL}
+
+if [ ! -z ${FAIL} ]; then exit 1; fi
+exit 0