freebsd-dev/sys/conf/kmod_syms.awk
Konstantin Belousov 0d7a6199b6 kmod_syms.awk: fix removal of the export list from the symbol table
Print some warning when export is requested for non-existing symbol.

Reviewed by:	emaste
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D32878
2021-11-18 15:56:24 +02:00

33 lines
714 B
Awk

# $FreeBSD$
# Read global symbols from object file.
BEGIN {
modname = ARGV[1]
while ("${NM:='nm'} -g " ARGV[1] | getline) {
if (match($0, /^[^[:space:]]+ [^AU] (.*)$/)) {
syms[$3] = $2
}
}
delete ARGV[1]
}
# De-list symbols from the export list.
{
smbl = $0
if (!(smbl in syms)) {
printf "Symbol %s is not present in %s\n", \
smbl, modname > "/dev/stderr"
}
delete syms[smbl]
}
# Strip commons, make everything else local.
END {
for (member in syms) {
if (syms[member] == "C")
print "-N" member
else
print "-L" member
}
}