--- a/hotspot/make/bsd/makefiles/buildtree.make	Wed Jul 05 17:56:18 2017 +0200
+++ b/hotspot/make/bsd/makefiles/buildtree.make	Mon Dec 05 14:55:16 2011 -0800
@@ -55,6 +55,9 @@
 # The makefiles are split this way so that "make foo" will run faster by not
 # having to read the dependency files for the vm.
 
+# needs to be set here since this Makefile doesn't include defs.make
+OS_VENDOR:=$(shell uname -s)
+
 include $(GAMMADIR)/make/scm.make
 include $(GAMMADIR)/make/altsrc.make
 
@@ -159,8 +162,15 @@
   endif
 endif
 
-# MACOSX FIXME: we should be able to run test_gamma (see MACOSX_PORT-214)
-ifdef ALWAYS_PASS_TEST_GAMMA
+ifeq ($(OS_VENDOR), Darwin)
+  # MACOSX FIXME: we should be able to run test_gamma (see MACOSX_PORT-214)
+  ifeq ($(ALWAYS_PASS_TEST_GAMMA),)
+    # ALWAYS_PASS_TEST_GAMMA wasn't set so we default to true on MacOS X
+    # until MACOSX_PORT-214 is fixed
+    ALWAYS_PASS_TEST_GAMMA=true
+  endif
+endif
+ifeq ($(ALWAYS_PASS_TEST_GAMMA), true)
   TEST_GAMMA_STATUS= echo 'exit 0';
 else
   TEST_GAMMA_STATUS=

--- a/hotspot/make/bsd/makefiles/sa.make	Wed Jul 05 17:56:18 2017 +0200
+++ b/hotspot/make/bsd/makefiles/sa.make	Mon Dec 05 14:55:16 2011 -0800
@@ -37,11 +37,24 @@
 TOPDIR    = $(shell echo `pwd`)
 GENERATED = $(TOPDIR)/../generated
 
-# tools.jar is needed by the JDI - SA binding
-ifeq ($(SA_APPLE_BOOT_JAVA),true)
-  SA_CLASSPATH = $(BOOT_JAVA_HOME)/bundle/Classes/classes.jar
+# SA-JDI depends on the standard JDI classes.
+# Default SA_CLASSPATH location:
+DEF_SA_CLASSPATH=$(BOOT_JAVA_HOME)/lib/tools.jar
+ifeq ($(ALT_SA_CLASSPATH),)
+  # no alternate specified; see if default exists
+  SA_CLASSPATH=$(shell test -f $(DEF_SA_CLASSPATH) && echo $(DEF_SA_CLASSPATH))
+  ifeq ($(SA_CLASSPATH),)
+    # the default doesn't exist
+    ifeq ($(OS_VENDOR), Darwin)
+      # A JDK from Apple doesn't have tools.jar; the JDI classes are
+      # are in the regular classes.jar file.
+      APPLE_JAR=$(BOOT_JAVA_HOME)/bundle/Classes/classes.jar
+      SA_CLASSPATH=$(shell test -f $(APPLE_JAR) && echo $(APPLE_JAR))
+    endif
+  endif
 else
-  SA_CLASSPATH = $(BOOT_JAVA_HOME)/lib/tools.jar
+  _JUNK_ := $(shell echo >&2 "INFO: ALT_SA_CLASSPATH=$(ALT_SA_CLASSPATH)")
+  SA_CLASSPATH=$(shell test -f $(ALT_SA_CLASSPATH) && echo $(ALT_SA_CLASSPATH))
 endif
 
 # TODO: if it's a modules image, check if SA module is installed.
@@ -72,8 +85,8 @@
 	  echo "ALT_BOOTDIR, BOOTDIR or JAVA_HOME needs to be defined to build SA"; \
 	  exit 1; \
 	fi
-	$(QUIETLY) if [ ! -f $(SA_CLASSPATH) -a ! -d $(MODULELIB_PATH) ] ; then \
-	  echo "Missing $(SA_CLASSPATH) file. Use 1.6.0 or later version of JDK";\
+	$(QUIETLY) if [ ! -f "$(SA_CLASSPATH)" -a ! -d $(MODULELIB_PATH) ] ; then \
+	  echo "Cannot find JDI classes. Use 1.6.0 or later version of JDK."; \
 	  echo ""; \
 	  exit 1; \
 	fi