--- build/linux/chrome.map.orig	2022-03-28 18:11:04 UTC
+++ build/linux/chrome.map
@@ -20,6 +20,10 @@ global:
   # Program entry point.
   _start;
 
+  # FreeBSD specific variables.
+  __progname;
+  environ;
+
   # Memory allocation symbols.  We want chrome and any libraries to
   # share the same heap, so it is correct to export these symbols.
   aligned_alloc;