Description: starting with firefox 66, armhf builds on Launchpad frequently
 fail with "/usr/bin/ld: final link failed: memory exhausted" when linking
 libxul.so. This is an attempt to reduce the memory used by ld.
Author: Olivier Tilloy <olivier.tilloy@canonical.com>

--- a/build/moz.configure/toolchain.configure
+++ b/build/moz.configure/toolchain.configure
@@ -2056,15 +2056,16 @@ def select_linker(linker, c_compiler, de
 set_config('LINKER_KIND', select_linker.KIND)
 
 
-@depends_if(select_linker, macos_sdk)
-def linker_ldflags(linker, macos_sdk):
+@depends_if(select_linker, macos_sdk, host)
+def linker_ldflags(linker, macos_sdk, host):
     flags = list(linker.LINKER_FLAG or [])
     if macos_sdk:
         if linker.KIND == 'ld64':
             flags.append('-Wl,-syslibroot,%s' % macos_sdk)
         else:
             flags.append('-Wl,--sysroot=%s' % macos_sdk)
-
+    elif host.cpu == 'arm':
+        flags.append('-Wl,--no-keep-memory')
     return flags