RFR: JDK-8145564: 8036003: startup regression on linux fastdebug builds (original) (raw)

Erik Joelsson erik.joelsson at oracle.com
Wed Dec 16 21:35:06 UTC 2015

One more thing, where should this fix be pushed? Do you need it urgently in hs-rt?

/Erik

On 2015-12-16 22:34, Erik Joelsson wrote:

Hello,

Please review this quick fix for the build issue introduced in Hotspot by JDK-8036003. The short story is that if you set DEBUGBINARIES=true when building Hotspot fastdebug, you essentially get a slowdebug build. For an explanation of why, see comment in bug. This behavior is of course also a bug, but not something I will address in this quick fix. What happened in JDK-8036003 was that a new configure API for controlling debug symbols was introduced. The two main settings of this new parameter, --with-native-debug-symbols, that we use internally at Oracle are "external" and "zipped". It was important to us that the behavior of these did not change with JDK-8036003, but exactly that did happen, because both of these settings now cause DEBUGBINARIES=true to be set. This variable has never been set by configure before and because of the above weird behavior in the Hotspot makefiles, we are having problems. My proposed quick fix is to not set DEBUGBINARIES=true for "external" or "zipped". It can remain true for "internal" since Oracle never builds it that way, and I understand those that requested this new configure parameter were setting DEBUGBINARIES=true as a workaround before this anyway, so they should be fine with the broken fastdebug behavior for a while more. I will file a follow up bug to properly clean up this mess, but it will take some more time. Bug: https://bugs.openjdk.java.net/browse/JDK-8145564 Webrev: http://cr.openjdk.java.net/~erikj/8145564/webrev.01/ /Erik

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