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#!/bin/sh
# $PostgreSQL: pgsql/src/tools/find_typedef,v 1.16 2009/06/12 03:09:07 momjian Exp $
# This script attempts to find all typedef's in the postgres binaries
# by using 'nm' to report all typedef debugging symbols.
#
# For this program to work, you must have compiled all binaries with
# debugging symbols.
#
# This is run on BSD/OS 4.0 or Linux, so you may need to make changes.
#
# Ignore the nm errors about a file not being a binary file.
#
# It gets typedefs by reading "STABS":
#
# http://www.informatik.uni-frankfurt.de/doc/texi/stabs_toc.html
#
# objdump:
# -G, --stabs Display (in raw form) any STABS info in the file
#
# --stabs
# Display the contents of the .stab, .stab.index, and
# .stab.excl sections from an ELF file. This is only
# useful on systems (such as Solaris 2.0) in which
# .stab debugging symbol-table entries are carried in
# an ELF section. In most other file formats, debug-
# ging symbol-table entries are interleaved with
# linkage symbols, and are visible in the --syms out-
# put.
if [ "$#" -eq 0 -o ! -d "$1" ]
then echo "Usage: $0 postgres_binary_directory [...]" 1>&2
exit 1
fi
for DIR
do # if objdump -W is recognized, only one line of error should appear
if [ `objdump -W 2>&1 | wc -l` -eq 1 ]
then # Linux
# Unfortunately the Linux version doesn't show unreferenced typedefs.
# The problem is that they are still in the source code so should be
# indented properly. However, I think pgindent only cares about
# the typedef references, not the definitions, so I think it might
# be fine
objdump -W "$DIR"/* |
egrep -A3 '\(DW_TAG_typedef\)' |
awk ' $2 == "DW_AT_name" {print $NF}'
elif [ `readelf -w 2>&1 | wc -l` -gt 1 ]
then # FreeBSD, similar output to Linux
readelf -w "$DIR"/* |
egrep -A3 '\(DW_TAG_typedef\)' |
awk ' $1 == "DW_AT_name" {print $NF}'
else # BSD/OS
# BSD/OS reports all typedefs, even those defined in system
# include files but never referenced in the PG code.
objdump --stabs "$DIR"/* |
awk ' $2 == "LSYM" && $7 ~ /:t/ {sub(":.*", "", $7); print $7}'
fi
done |
grep -v ' ' | # some typedefs have spaces, remove them
sort |
uniq |
# these are used both for typedefs and variable names
# so do not include them
egrep -v '^(date|interval|timestamp|ANY)$'
|
