From f465760d1f822e98cdc5c7099e692d65ae8080f5 Mon Sep 17 00:00:00 2001
From: ridiculousfish <corydoras@ridiculousfish.com>
Date: Fri, 28 Sep 2018 23:38:59 -0400
Subject: [PATCH] Add a tool to locate global variables

---
 build_tools/find_globals.fish | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100755 build_tools/find_globals.fish

diff --git a/build_tools/find_globals.fish b/build_tools/find_globals.fish
new file mode 100755
index 000000000..24338bca4
--- /dev/null
+++ b/build_tools/find_globals.fish
@@ -0,0 +1,19 @@
+#!/usr/bin/env fish
+
+# Finds global variables by parsing the output of 'nm'
+# for object files in this directory.
+# This was written for macOS nm.
+
+set total_globals 0
+
+for file in ./**.o
+  set filename (basename $file)
+  for line in (nm -p -P -U $file)
+    # Look in data (dD) and bss (bB) segments.
+    set matches (string match --regex '^([^ ]+) ([dDbB])' -- $line) ; or continue
+    echo $filename (echo $matches[2] | c++filt) $matches[3]
+    set total_globals (math $total_globals + 1)
+  end
+end
+
+echo "Total: $total_globals"
\ No newline at end of file