diff -up firefox-68.0/toolkit/moz.configure.elfhack firefox-68.0/toolkit/moz.configure
--- firefox-68.0/toolkit/moz.configure.elfhack	2018-09-27 14:32:56.549507561 +0200
+++ firefox-68.0/toolkit/moz.configure	2018-09-27 14:33:08.219532121 +0200
@@ -1195,7 +1195,7 @@ with only_when(has_elfhack):
                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)