--- a/make/test/JtregNativeJdk.gmk	Tue Mar 12 14:35:26 2019 +0000
+++ b/make/test/JtregNativeJdk.gmk	Tue Mar 12 08:04:33 2019 -0700
@@ -82,19 +82,23 @@
   BUILD_JDK_JTREG_EXCLUDE += exeJniInvocationTest.c
 endif
 
-$(eval $(call SetupTestFilesCompilation, BUILD_JDK_JTREG_LIBRARIES, \
-    TYPE := LIBRARY, \
-    SOURCE_DIRS := $(BUILD_JDK_JTREG_NATIVE_SRC), \
-    OUTPUT_DIR := $(BUILD_JDK_JTREG_OUTPUT_DIR), \
-    EXCLUDE := $(BUILD_JDK_JTREG_EXCLUDE), \
-))
+# This evaluation is expensive and should only be done if this target was
+# explicitly called.
+ifneq ($(filter build-test-jdk-jtreg-native, $(MAKECMDGOALS)), )
+  $(eval $(call SetupTestFilesCompilation, BUILD_JDK_JTREG_LIBRARIES, \
+      TYPE := LIBRARY, \
+      SOURCE_DIRS := $(BUILD_JDK_JTREG_NATIVE_SRC), \
+      OUTPUT_DIR := $(BUILD_JDK_JTREG_OUTPUT_DIR), \
+      EXCLUDE := $(BUILD_JDK_JTREG_EXCLUDE), \
+  ))
 
-$(eval $(call SetupTestFilesCompilation, BUILD_JDK_JTREG_EXECUTABLES, \
-    TYPE := PROGRAM, \
-    SOURCE_DIRS := $(BUILD_JDK_JTREG_NATIVE_SRC), \
-    OUTPUT_DIR := $(BUILD_JDK_JTREG_OUTPUT_DIR), \
-    EXCLUDE := $(BUILD_JDK_JTREG_EXCLUDE), \
-))
+  $(eval $(call SetupTestFilesCompilation, BUILD_JDK_JTREG_EXECUTABLES, \
+      TYPE := PROGRAM, \
+      SOURCE_DIRS := $(BUILD_JDK_JTREG_NATIVE_SRC), \
+      OUTPUT_DIR := $(BUILD_JDK_JTREG_OUTPUT_DIR), \
+      EXCLUDE := $(BUILD_JDK_JTREG_EXCLUDE), \
+  ))
+endif
 
 build-test-jdk-jtreg-native: $(BUILD_JDK_JTREG_LIBRARIES) $(BUILD_JDK_JTREG_EXECUTABLES)