--- a/common/autoconf/spec.gmk.in	Tue Nov 24 11:25:16 2015 +0100
+++ b/common/autoconf/spec.gmk.in	Tue Nov 24 15:36:32 2015 +0100
@@ -424,6 +424,7 @@
 JAVA_FLAGS:=@JAVA_FLAGS@
 JAVA_FLAGS_BIG:=@JAVA_FLAGS_BIG@
 JAVA_FLAGS_SMALL:=@JAVA_FLAGS_SMALL@
+JAVA_FLAGS_JAVAC:=@JAVA_FLAGS_JAVAC@
 JAVA_TOOL_FLAGS_SMALL:=@JAVA_TOOL_FLAGS_SMALL@
 SJAVAC_SERVER_JAVA_FLAGS:=@SJAVAC_SERVER_JAVA_FLAGS@
 
@@ -440,13 +441,15 @@
 # it possible to override only the *_CMD variables.
 JAVA=@FIXPATH@ $(JAVA_CMD) $(JAVA_FLAGS_BIG) $(JAVA_FLAGS)
 JAVA_SMALL=@FIXPATH@ $(JAVA_CMD) $(JAVA_FLAGS_SMALL) $(JAVA_FLAGS)
+JAVA_JAVAC=@FIXPATH@ $(JAVA_CMD) $(JAVA_FLAGS_JAVAC) $(JAVA_FLAGS)
 JAVAC=@FIXPATH@ $(JAVAC_CMD)
 JAVAH=@FIXPATH@ $(JAVAH_CMD)
 JAR=@FIXPATH@ $(JAR_CMD)
 JARSIGNER=@FIXPATH@ $(JARSIGNER_CMD)
 # A specific java binary with specific options can be used to run
 # the long running background sjavac servers and other long running tasks.
-SJAVAC_SERVER_JAVA=@FIXPATH@ $(SJAVAC_SERVER_JAVA_CMD) $(SJAVAC_SERVER_JAVA_FLAGS)
+SJAVAC_SERVER_JAVA=@FIXPATH@ @FIXPATH_DETACH_FLAG@ $(SJAVAC_SERVER_JAVA_CMD) \
+    $(SJAVAC_SERVER_JAVA_FLAGS)
 
 # Hotspot sets this variable before reading the SPEC when compiling sa-jdi.jar. Avoid
 # overriding that value by using ?=.