--- a/common/autoconf/boot-jdk.m4	Thu May 11 20:19:08 2017 +0000
+++ b/common/autoconf/boot-jdk.m4	Fri May 12 21:13:24 2017 +0200
@@ -318,7 +318,7 @@
   AC_SUBST(JAVAC_FLAGS)
 
   # Check if the boot jdk is 32 or 64 bit
-  if "$JAVA" -d64 -version > /dev/null 2>&1; then
+  if "$JAVA" -version 2>&1 | $GREP -q "64-Bit"; then
     BOOT_JDK_BITS="64"
   else
     BOOT_JDK_BITS="32"

--- a/common/autoconf/build-performance.m4	Thu May 11 20:19:08 2017 +0000
+++ b/common/autoconf/build-performance.m4	Fri May 12 21:13:24 2017 +0200
@@ -417,10 +417,8 @@
   AC_SUBST(SJAVAC_SERVER_JAVA)
 
   if test "$MEMORY_SIZE" -gt "3000"; then
-    ADD_JVM_ARG_IF_OK([-d64],SJAVAC_SERVER_JAVA_FLAGS,[$SJAVAC_SERVER_JAVA])
-    if test "$JVM_ARG_OK" = true; then
+    if "$JAVA" -version 2>&1 | $GREP -q "64-Bit"; then
       JVM_64BIT=true
-      JVM_ARG_OK=false
     fi
   fi
 

--- a/common/autoconf/generated-configure.sh	Thu May 11 20:19:08 2017 +0000
+++ b/common/autoconf/generated-configure.sh	Fri May 12 21:13:24 2017 +0200
@@ -5186,7 +5186,7 @@
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1493884285
+DATE_WHEN_GENERATED=1494615666
 
 ###############################################################################
 #
@@ -31416,7 +31416,7 @@
 
 
   # Check if the boot jdk is 32 or 64 bit
-  if "$JAVA" -d64 -version > /dev/null 2>&1; then
+  if "$JAVA" -version 2>&1 | $GREP -q "64-Bit"; then
     BOOT_JDK_BITS="64"
   else
     BOOT_JDK_BITS="32"
@@ -65934,24 +65934,8 @@
 
 
   if test "$MEMORY_SIZE" -gt "3000"; then
-
-  $ECHO "Check if jvm arg is ok: -d64" >&5
-  $ECHO "Command: $SJAVAC_SERVER_JAVA -d64 -version" >&5
-  OUTPUT=`$SJAVAC_SERVER_JAVA -d64 -version 2>&1`
-  FOUND_WARN=`$ECHO "$OUTPUT" | $GREP -i warn`
-  FOUND_VERSION=`$ECHO $OUTPUT | $GREP " version \""`
-  if test "x$FOUND_VERSION" != x && test "x$FOUND_WARN" = x; then
-    SJAVAC_SERVER_JAVA_FLAGS="$SJAVAC_SERVER_JAVA_FLAGS -d64"
-    JVM_ARG_OK=true
-  else
-    $ECHO "Arg failed:" >&5
-    $ECHO "$OUTPUT" >&5
-    JVM_ARG_OK=false
-  fi
-
-    if test "$JVM_ARG_OK" = true; then
+    if "$JAVA" -version 2>&1 | $GREP -q "64-Bit"; then
       JVM_64BIT=true
-      JVM_ARG_OK=false
     fi
   fi