Don't quote $nm in the script for checking the vdso for external references. Doing so breaks multiword constructs, like using CROSS_COMPILE='ccache '.
Reported-by: Stephen Rothwell Signed-off-by: H. Peter Anvin LKML-Reference:
#!/bin/sh nm="$1" file="$2" $nm "$file" | grep '^ *U' > /dev/null 2>&1 if [ $? -eq 1 ]; then exit 0 else echo "$file: undefined symbols found" >&2 exit 1 fi