| #!/bin/sh |
| # cygmagic - Generate "magic numbers" from a structure. |
| # |
| # This file is part of Cygwin. |
| # |
| # This software is a copyrighted work licensed under the terms of the |
| # Cygwin license. Please consult the file "CYGWIN_LICENSE" for |
| # details. |
| |
| file_magic=$1; shift |
| gcc=$1; shift |
| file=$1; shift |
| trap "rm -f /tmp/$$.magic" 0 1 2 15 |
| cat <<EOF > $file_magic |
| /* autogenerated - do not edit */ |
| #include "$file" |
| EOF |
| sumit() { |
| cksum $* |
| } |
| |
| while [ -n "$1" ]; do |
| define=$1; shift |
| struct=$1; shift |
| sum=`$gcc -D__CYGMAGIC__ -E -P $file | sed -n "/^$struct/,/^};/p" | sed -e 's/[ ]//g' -e '/^$/d' | sumit | awk '{printf "0x%xU", $1}'` |
| echo "#define $define $sum" |
| curr=`sed -n "s/^#[ ]*define CURR_$define[ ][ ]*\([^ ][^ ]*\)/\1/p" $file` |
| [ "$curr" != "$sum" ] && echo "*** WARNING WARNING WARNING WARNING WARNING *** |
| *** $file: magic number for $define changed old $curr != new $sum |
| *** WARNING WARNING WARNING WARNING WARNING ***" 1>&2 |
| done >> $file_magic |
| exit 0 |
