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#! /bin/sh
# Written by Zack Weinberg <zackw at panix.com> in 2017.
# To the extent possible under law, Zack Weinberg has waived all
# copyright and related or neighboring rights to this work.
#
# See https://creativecommons.org/publicdomain/zero/1.0/ for further
# details.
# Test that all global symbols in the static version of the library
# (libcrypt.a) are either listed as global and supported for new code
# in libcrypt.map.in, or begin with a _crypt prefix. Also test that
# all of the global, supported for new code, symbols mentioned in
# libcrypt.map.in are in fact defined.
#
# Due to limitations in Automake, this program takes parameters from
# the environment:
# $lib_la - full pathname of libcrypt.la
# $lib_map - full pathname of libcrypt.map.in
set -e
LC_ALL=C; export LC_ALL
list_library_globals ()
{
eval $(grep old_library= "$1")
nm -og "${1%/*}/.libs/${old_library}" |
grep -v ' U ' | cut -d' ' -f3 | sort -u |
grep -v '^_crypt_' | # our internal-symbol prefix
grep -v '^_[_A-Y]' # compiler's internal-symbol prefix
unset old_library
}
list_allowed_globals ()
{
${AWK-awk} '
NF == 0 { next }
$1 == "#" { next }
$1 == "%chain" { next }
$2 != "-" { print $1 }
' "$1" | sort -u
}
if [ ! -f "$lib_la" ] || [ ! -f "$lib_map" ]; then
echo "Usage: lib_la=/path/to/library.la lib_map=/path/to/library.map $0" >&2
exit 1
fi
lib_globals=""
lib_xglobals=""
trap 'rm -f $lib_globals $lib_xglobals || :' 0
lib_globals="$(mktemp)"
lib_xglobals="$(mktemp)"
list_library_globals "$lib_la" > "$lib_globals"
list_allowed_globals "$lib_map" > "$lib_xglobals"
extra_globals="$(comm -23 "$lib_globals" "$lib_xglobals" | tr -s "$IFS" " ")"
missing_globals="$(comm -13 "$lib_globals" "$lib_xglobals"| tr -s "$IFS" " ")"
status=0
if [ -n "$extra_globals" ]; then
printf '*** Extra symbols: %s\n' "$extra_globals" >&2
status=1
fi
if [ -n "$missing_globals" ]; then
printf '*** Missing symbols: %s\n' "$missing_globals" >&2
status=1
fi
exit $status
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