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llvm-mirror/utils/findsym.pl
Harmen Stoppels 8d4eac3a03 Prefer /usr/bin/env xxx over /usr/bin/xxx where xxx = perl, python, awk
Allow users to use a non-system version of perl, python and awk, which is useful
in certain package managers.

Reviewed By: JDevlieghere, MaskRay

Differential Revision: https://reviews.llvm.org/D95119
2021-02-25 11:32:27 +01:00

36 lines
848 B
Perl
Executable File

#!/usr/bin/env perl
#
# Program: findsym.pl
#
# Synopsis: Generate a list of the libraries in which a symbol is defined or
# referenced.
#
# Syntax: findsym.pl <directory_with_libraries_in_it> <symbol>
#
use warnings;
# Give first option a name.
my $Directory = $ARGV[0];
my $Symbol = $ARGV[1];
# Open the directory and read its contents, sorting by name and differentiating
# by whether its a library (.a) or an object file (.o)
opendir DIR,$Directory;
my @files = readdir DIR;
closedir DIR;
@objects = grep(/l?i?b?LLVM.*\.[oa]$/,sort(@files));
# Gather definitions from the libraries
foreach $lib (@objects) {
my $head = 0;
open SYMS,
"nm $Directory/$lib | grep '$Symbol' | sort --key=3 | uniq |";
while (<SYMS>) {
if (!$head) { print "$lib:\n"; $head = 1; }
chomp($_);
print " $_\n";
}
close SYMS;
}