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#!/bin/sh
# -------------------------------------------------------------------------
# $Id$
#
# ace-diff-config script - use to compare ACE macro definitions in
# ACE configuration headers
#
# -------------------------------------------------------------------------
# Copyright (C) 1998 Ossama Othman
#
# All Rights Reserved
#
# This library is free software; you can redistribute it and/or
# modify it under the current ACE distribution terms.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# This is a script that can be used to determine differences between two ACE
# configuration headers. The file `ACE.ifnames' contains a list of all of the
# identifiers used in ACE's preprocessor conditionals (generated with
# GNU Autoconf's "ifnames" program). The script will go through the list in
# ACE.ifnames and determine if the given macro was defined in only one of the
# two headers being headers being compared.
#
# The C++ pre-processor is used when comparing so that macros from "#included"
# headers will also be checked.
set -e
INCLUDES="@top_srcdir@"
CXXCPP="@CXXCPP@ -I. -I$INCLUDES"
MACRO_LIST_FILE="ACE.ifnames"
RESULTS_FILE=ace-diff-config.results
TEST_FILE="ace-diff-config.test.cpp"
usage()
{
cat <<EOF
Usage: ace-diff-config HEADER1 HEADER2
e.g.: ./ace-diff-config ace/config-linux-lxpthreads.h ace/config.h
EOF
exit $1
}
if test $# -eq 0; then
usage 1
fi
if test -f $RESULTS_FILE; then
mv $RESULTS_FILE $RESULTS_FILE.bak
fi
if test -f $1; then
:
else
echo "error: $1 does not exist"
exit 1
fi
if test -f $2; then
:
else
echo "error: $2 does not exist"
exit 1
fi
# Process the first header
echo ""
echo -n "Processing $1 "
echo "Macros that are defined in $1" >> $RESULTS_FILE
echo "but not in $2" >> $RESULTS_FILE
echo "-------------------------------------------------------" >> $RESULTS_FILE
list=`cat $MACRO_LIST_FILE`; for p in $list; do
# Provide some output
echo -n "."
cat > $TEST_FILE <<EOF
#include "$1"
#ifdef $p
DEFINED
#endif
EOF
if (eval "$CXXCPP $TEST_FILE") |
egrep "DEFINED" >/dev/null; then
defined=true
else
defined=false
fi
# now check if it is defined in header #2
if test $defined = true; then
cat > $TEST_FILE <<EOF
#include "$2"
#ifdef $p
DEFINED
#endif
EOF
if (eval "$CXXCPP $TEST_FILE") |
egrep "DEFINED" >/dev/null; then
defined=true
else
defined=false
fi
# if "defined" is false then, the first header is the only header that
# defines the macro.
if test $defined = false; then
echo $p >> $RESULTS_FILE
fi
fi
done
# Process the second header
echo ""
echo -n "Processing $2 "
echo "" >> $RESULTS_FILE
echo "Macros that are defined in $2" >> $RESULTS_FILE
echo "but not in $1" >> $RESULTS_FILE
echo "-------------------------------------------------------" >> $RESULTS_FILE
list=`cat $MACRO_LIST_FILE`; for p in $list; do
# Provide some output
echo -n "."
cat > $TEST_FILE <<EOF
#include "$2"
#ifdef $p
DEFINED
#endif
EOF
if (eval "$CXXCPP $TEST_FILE") |
egrep "DEFINED" >/dev/null; then
defined=true
else
defined=false
fi
# now check if it is defined in header #1
if test $defined = true; then
cat > $TEST_FILE <<EOF
#include "$1"
#ifdef $p
DEFINED
#endif
EOF
if (eval "$CXXCPP $TEST_FILE") |
egrep "DEFINED" >/dev/null; then
defined=true
else
defined=false
fi
# if "defined" is false then, the second header is the only header that
# defines the macro.
if test $defined = false; then
echo $p >> $RESULTS_FILE
fi
fi
done
rm $TEST_FILE
echo ""
echo "Results are in $RESULTS_FILE."
echo ""
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