8023480: Create a jvm.cfg for zero on 32 bit architectures

Reviewed-by: dholmes, erikj

jdk/makefiles/CopyFiles.gmk

@@ -292,8 +292,11 @@ endif
 JVMCFG_DIR := $(JDK_OUTPUTDIR)/lib$(OPENJDK_TARGET_CPU_LIBDIR)
 JVMCFG := $(JVMCFG_DIR)/jvm.cfg
 
+# To do: should this also support -zeroshark?
 
-ifeq ($(OPENJDK_TARGET_CPU_BITS),32)
+ifeq ($(OPENJDK_TARGET_CPU_BITS),64)
+  COPY_JVM_CFG_FILE := true
+else
   # On 32-bit machines we have three potential VMs: client, server and minimal.
   # Historically we usually have both client and server and so that is what the
   # committed jvm.cfg expects (including platform specific ergonomics switches
@@ -302,16 +305,21 @@ ifeq ($(OPENJDK_TARGET_CPU_BITS),32)
   # The main problem is deciding whether to use aliases for the VMs that are not
   # present and the current position is that we add aliases for client and server, but
   # not for minimal.
-  # To do: should this also support, -zero and -zeroshark?
-
   CLIENT_AND_SERVER := $(and $(findstring true,$(JVM_VARIANT_SERVER)),$(findstring true,$(JVM_VARIANT_CLIENT)))
-
   ifeq ($(CLIENT_AND_SERVER), true)
-    # Use the committed jvm.cfg for this 32 bit setup (the minimal
-    # VM is already KNOWN on platforms that potentially support it)
+    COPY_JVM_CFG_FILE := true
+  else
+    # For zero, the default jvm.cfg file is sufficient
+    ifeq ($(JVM_VARIANT_ZERO), true)
+      COPY_JVM_CFG_FILE := true
+    endif
+  endif
+endif
+
+ifeq ($(COPY_JVM_CFG_FILE), true)
     $(JVMCFG): $(JVMCFG_SRC)
 	$(call install-file)
-  else
+else
     $(JVMCFG):
 	$(MKDIR) -p $(@D)
 	$(RM) $(@)
@@ -338,12 +346,6 @@ ifeq ($(OPENJDK_TARGET_CPU_BITS),32)
             endif
         endif
     endif
-  endif
-
-else
-    # Use the default jvm.cfg for this 64 bit setup.
-    $(JVMCFG): $(JVMCFG_SRC)
-	$(call install-file)
 endif
 
 COPY_FILES += $(JVMCFG)