--- seamonkey/mozilla/security/sandbox/linux/moz.build	2020-09-23 09:52:51.693587049 +0200
+++ seamonkey.new/mozilla/security/sandbox/linux/moz.build	2020-09-23 18:26:18.745598502 +0200
@@ -98,7 +98,7 @@
 # forcing there to be only one partition.
 for f in CONFIG['OS_CXXFLAGS']:
     if f.startswith('-flto') and CONFIG['CC_TYPE'] != 'clang':
-        LDFLAGS += ['--param lto-partitions=1']
+        LDFLAGS += ['--param=lto-partitions=1']
 
 DEFINES['NS_NO_XPCOM'] = True
 DisableStlWrapping()