1 files changed, 64 insertions, 0 deletions
diff --git a/scripts/depmod.sh b/scripts/depmod.sh
new file mode 100755
index 00000000000..122599b1c13
--- /dev/null
+++ b/scripts/depmod.sh
@@ -0,0 +1,64 @@
+#!/bin/sh
+#
+# A depmod wrapper used by the toplevel Makefile
+
+if test $# -ne 3; then
+	echo "Usage: $0 /sbin/depmod <kernelrelease> <symbolprefix>" >&2
+	exit 1
+fi
+DEPMOD=$1
+KERNELRELEASE=$2
+SYMBOL_PREFIX=$3
+
+if ! test -r System.map -a -x "$DEPMOD"; then
+	exit 0
+fi
+
+# older versions of depmod don't support -P <symbol-prefix>
+# support was added in module-init-tools 3.13
+if test -n "$SYMBOL_PREFIX"; then
+	release=$("$DEPMOD" --version)
+	package=$(echo "$release" | cut -d' ' -f 1)
+	if test "$package" = "module-init-tools"; then
+		version=$(echo "$release" | cut -d' ' -f 2)
+		later=$(printf '%s\n' "$version" "3.13" | sort -V | tail -n 1)
+		if test "$later" != "$version"; then
+			# module-init-tools < 3.13, drop the symbol prefix
+			SYMBOL_PREFIX=""
+		fi
+	fi
+	if test -n "$SYMBOL_PREFIX"; then
+		SYMBOL_PREFIX="-P $SYMBOL_PREFIX"
+	fi
+fi
+
+# older versions of depmod require the version string to start with three
+# numbers, so we cheat with a symlink here
+depmod_hack_needed=true
+tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
+mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
+if "$DEPMOD" -b "$tmp_dir" $KERNELRELEASE 2>/dev/null; then
+	if test -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep" -o \
+		-e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep.bin"; then
+		depmod_hack_needed=false
+	fi
+fi
+rm -rf "$tmp_dir"
+if $depmod_hack_needed; then
+	symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
+	ln -s "$KERNELRELEASE" "$symlink"
+	KERNELRELEASE=99.98.$KERNELRELEASE
+fi
+
+set -- -ae -F System.map
+if test -n "$INSTALL_MOD_PATH"; then
+	set -- "$@" -b "$INSTALL_MOD_PATH"
+fi
+"$DEPMOD" "$@" "$KERNELRELEASE" $SYMBOL_PREFIX
+ret=$?
+
+if $depmod_hack_needed; then
+	rm -f "$symlink"
+fi
+
+exit $ret