How to pass additional options to boot jdk during configure, _JAVA_OPTIONS does not work

[Ao Qi]

Hi,

Is there any options or methods that I can pass additional jdk options
to the boot jdk when I configure jdk/jdk? I found
--with-boot-jdk-jvmargs, but I think it is effective during building
the jdk, not configuring the jdk.

I used _JAVA_OPTIONS, but it failed to configure (fail to detect jdk
version). I made a patch:

$ hg diff
diff -r feb4c9e03aed make/autoconf/basics.m4
--- a/make/autoconf/basics.m4 Tue Sep 18 19:44:27 2018 -0700
+++ b/make/autoconf/basics.m4 Wed Sep 19 11:44:54 2018 +0800
@@ -168,7 +168,7 @@
 [
   $ECHO "Check if jvm arg is ok: $1" >&AS_MESSAGE_LOG_FD
   $ECHO "Command: $3 $1 -version" >&AS_MESSAGE_LOG_FD
-  OUTPUT=`$3 $1 -version 2>&1`
+  OUTPUT=`$3 $1 -version 2>&1 | $GREP -v "^Picked up _JAVA_OPTIONS:"`
   FOUND_WARN=`$ECHO "$OUTPUT" | $GREP -i warn`
   FOUND_VERSION=`$ECHO $OUTPUT | $GREP " version \""`
   if test "x$FOUND_VERSION" != x && test "x$FOUND_WARN" = x; then
diff -r feb4c9e03aed make/autoconf/boot-jdk.m4
--- a/make/autoconf/boot-jdk.m4 Tue Sep 18 19:44:27 2018 -0700
+++ b/make/autoconf/boot-jdk.m4 Wed Sep 19 11:44:54 2018 +0800
@@ -74,7 +74,7 @@
           BOOT_JDK_FOUND=no
         else
           # Oh, this is looking good! We probably have found a proper
JDK. Is it the correct version?
-          BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 | $HEAD -n 1`
+          BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 |
$GREP -v "^Picked up _JAVA_OPTIONS:" | $HEAD -n 1`

           # Extra M4 quote needed to protect [] in grep expression.
           [FOUND_CORRECT_VERSION=`$ECHO $BOOT_JDK_VERSION \
@@ -90,7 +90,7 @@
             AC_MSG_CHECKING([for Boot JDK])
             AC_MSG_RESULT([$BOOT_JDK])
             AC_MSG_CHECKING([Boot JDK version])
-            BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 |
$TR '\n\r' '  '`
+            BOOT_JDK_VERSION=`"$BOOT_JDK/bin/java" -version 2>&1 |
$GREP -v "^Picked up _JAVA_OPTIONS:" | $TR '\n\r' '  '`
             AC_MSG_RESULT([$BOOT_JDK_VERSION])
           fi # end check jdk version
         fi # end check javac



This works for me. The _JAVA_OPTIONS is effective during configure. Is
there some other way to do that (without changing the code)? Or
otherwise is it possible to accept this patch?

Cheers,
Ao Qi