diff -up thunderbird-68.1.1/toolkit/moz.configure.elfhack thunderbird-68.1.1/toolkit/moz.configure
--- thunderbird-68.1.1/toolkit/moz.configure.elfhack	2019-10-04 08:33:32.881241826 +0200
+++ thunderbird-68.1.1/toolkit/moz.configure	2019-10-04 08:38:35.422159976 +0200
@@ -1130,7 +1130,7 @@ with only_when('--enable-compile-environ
                help='{Enable|Disable} elf hacks')
 
         set_config('USE_ELF_HACK',
-                   depends_if('--enable-elf-hack')(lambda _: True))
+                   depends_if('--enable-elf-hack')(lambda _: False))
 
 
 @depends(check_build_environment)