jdk9/hs/hotspot make native libs for test build failure both on x86 and aarch64

[Yang Zhang]

Hi,

jdk9/hs/hotspot native libs for jtreg build failed after the push of
http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/308a53dd5aee

Build command:  make test-image-hotspot-jtreg-native

Could someone please help to fix it?

The reason is that dl library isn't found. I think the following
change could fix that:

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diff --git a/make/test/JtregNative.gmk b/make/test/JtregNative.gmk
index 78e78d7..95b5747 100644
--- a/make/test/JtregNative.gmk
+++ b/make/test/JtregNative.gmk
@@ -91,7 +91,7 @@ ifeq ($(OPENJDK_TARGET_OS), linux)
     BUILD_HOTSPOT_JTREG_LIBRARIES_LDFLAGS_libtest-rwx := -z execstack
     BUILD_HOTSPOT_JTREG_EXECUTABLES_LIBS_exeinvoke := -ljvm -lpthread
     BUILD_TEST_invoke_exeinvoke.c_OPTIMIZATION := NONE
-    BUILD_HOTSPOT_JTREG_EXECUTABLES_LDFLAGS_exeFPRegs := -ldl
+    BUILD_HOTSPOT_JTREG_EXECUTABLES_LDFLAGS_exeFPRegs :=
-Wl,--no-as-needed -ldl
 endif

 ifeq ($(OPENJDK_TARGET_OS), windows)

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Regards
Yang