kernel/arch/x86/entry/vdso/checkundef.sh

   1 #!/bin/sh
   2 nm="$1"
   3 file="$2"
   4 $nm "$file" | grep '^ *U' > /dev/null 2>&1
   5 if [ $? -eq 1 ]; then
   6     exit 0
   7 else
   8     echo "$file: undefined symbols found" >&2
   9     exit 1
  10 fi