#!/bin/sh

#

# simplistic script to check all header files for

# differences. Intended to help detect api changes

# between releases.

#

# it's not pretty or efficient, and inspection of

# the results must be done manually.

#

# it's also not secure (don't run as root)

# or portable. Tested on Linux.

#

if [ "x$1" = "x" -o "x$2" = "x" ]; then

   echo "Usage: $0 <old-dir> <new-dir>"

   exit 1

fi

od=$1

nd=$2

DIR=/tmp

OUTPUT=$DIR/api-diff.pat

ODT=$DIR/api-od

if [ ! -d $od ]; then

   echo "old dir $od doesn't exist"

   exit 1

fi

if [ ! -d $nd ]; then

   echo "old dir $nd doesn't exist"

   exit 1

fi

# find header in nd

rm -f $OUTPUT $ODT 2>/dev/null

(cd $od && find . -type f -name "*.h"|sort > $ODT)

OH=`cat $ODT`

for h in $OH

do

   nh=$nd/$h

   oh=$od/$h

   echo "* $nh"

   if [ -f "$nh" ]; then

      echo "* diff: $h vs $nh" >> $OUTPUT

      diff -u $oh $nh >> $OUTPUT 2>&1

   else

      echo "* Old header $h not found in new headers" >> $OUTPUT

   fi

done

echo "Inspect output in $OUTPUT"

echo "See Makefile.top for libtool version bumping rules."