8240375: Disable JFR by default for July 2020 release

Reviewed-by: aph, neugens

common/autoconf/generated-configure.sh

@@ -1857,7 +1857,7 @@ Optional Features:
                           run the Queens test after Hotspot build [disabled]
   --enable-unlimited-crypto
                           Enable unlimited crypto policy [disabled]
-  --disable-jfr           Disable Java Flight Recorder support [enabled]
+  --enable-jfr            Enable Java Flight Recorder support [disabled]
   --disable-debug-symbols disable generation of debug symbols [enabled]
   --disable-zip-debug-info
                           disable zipping of debug-info files [enabled]
@@ -4394,7 +4394,7 @@ VS_SDK_PLATFORM_NAME_2017=
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1582132239
+DATE_WHEN_GENERATED=1583241599
 
 ###############################################################################
 #
@@ -19831,15 +19831,11 @@ else
   enable_jfr=auto
 fi
 
-  if test "x$enable_jfr" = "xno"; then
+  if test "x$enable_jfr" = "xno" -o "x$enable_jfr" = "xauto"; then
     ENABLE_JFR=false
-  elif test "x$enable_jfr" = "xyes" -o "x$enable_jfr" = "xauto"; then
+  elif test "x$enable_jfr" = "xyes" ; then
     if test "x$JVM_VARIANT_MINIMAL1" = "xtrue" -o "x$JVM_VARIANT_ZERO" = "xtrue"; then
-      if test "x$enable_jfr" = "xyes"; then
-        as_fn_error $? "cannot enable JFR on minimal1 VM or zero build" "$LINENO" 5
-      else
-        ENABLE_JFR=false
-      fi
+      as_fn_error $? "cannot enable JFR on minimal1 VM or zero build" "$LINENO" 5
     else
       ENABLE_JFR=true
     fi

common/autoconf/jdk-options.m4

@@ -438,18 +438,14 @@ AC_DEFUN_ONCE([JDKOPT_SETUP_JDK_OPTIONS],
   # Enable or disable JFR
   #
   AC_MSG_CHECKING([whether to build jfr])
-  AC_ARG_ENABLE(jfr, [AS_HELP_STRING([--disable-jfr],
-      [Disable Java Flight Recorder support @<:@enabled@:>@])],,
+  AC_ARG_ENABLE(jfr, [AS_HELP_STRING([--enable-jfr],
+      [Enable Java Flight Recorder support @<:@disabled@:>@])],,
       [enable_jfr=auto])
-  if test "x$enable_jfr" = "xno"; then
+  if test "x$enable_jfr" = "xno" -o "x$enable_jfr" = "xauto"; then
     ENABLE_JFR=false
-  elif test "x$enable_jfr" = "xyes" -o "x$enable_jfr" = "xauto"; then
+  elif test "x$enable_jfr" = "xyes" ; then
     if test "x$JVM_VARIANT_MINIMAL1" = "xtrue" -o "x$JVM_VARIANT_ZERO" = "xtrue"; then
-      if test "x$enable_jfr" = "xyes"; then
-        AC_MSG_ERROR([cannot enable JFR on minimal1 VM or zero build])
-      else
-        ENABLE_JFR=false
-      fi
+      AC_MSG_ERROR([cannot enable JFR on minimal1 VM or zero build])
     else
       ENABLE_JFR=true
     fi