ubuntu-dev-tools/check-symbols

#!/bin/bash
# (C) Daniel Holbach (2006-2007), Licensed under the GPL 2

PACKAGES="`apt-cache showsrc $1 | grep ^Binary | sed 's/Binary\:\ //g;s/\,//g' | sort -u`"
DEBLINE=""

if [ -z $1 ]; then \
	echo "Missing argument: source package name."; \
	exit; \
fi

if [ -z $2 ]; then \
	DEBDIR="/var/cache/pbuilder/result"; \
else \
	DEBDIR="$2"; \
fi

for pack in $PACKAGES; \
do \
	for lib in `dpkg -L $pack | grep -E "\.so$" | sort -u`; \
	do \
		LIBNAME=$(basename $lib); \
		nm -D $lib | cut -d' ' -f3 | sort -u > /tmp/$LIBNAME.1; \
	done; \
	DEBLINE="$DEBLINE $DEBDIR/$pack*.deb "; 
done

sudo dpkg -i $DEBLINE;

for pack in $PACKAGES; \
do \
	for lib in `dpkg -L $pack | grep -E "\.so$" | sort -u`; \
	do \
		LIBNAME=$(basename $lib); \
		nm -D $lib | cut -d' ' -f3 | sort -u > /tmp/$LIBNAME.2; \
		echo "Checking: $lib"; \
		diff -u /tmp/$LIBNAME.{1,2}; \
		rm /tmp/$LIBNAME.{1,2}; \
	done; \
done