On Apr 29, 2011, at 1:47 PM, John Coomes wrote:

David Holmes (david.hol...@oracle.com) wrote:
http://cr.openjdk.java.net/~dholmes/7036525/webrev/

Simple but crude. If OPENJDK is defined then the Hotspot "alternative
source" mechanism is effectively disabled by checking for a non- existent
path. This allows people using the alt-src mechanism to select which
type of build they want in a way that is consistent with how builds of
OPENJDK are done in the rest of the JDK.

Tested by checking the "errorReporter.cpp" location in builds
with/without OPENJDK set, and with/without src/closed present.

This will be pushed into hotspot-rt/hotspot for hs21-b11

Hi David,

 38 ifneq ($(OPENJDK),true)
 39   HS_ALT_SRC_REL=src/closed
 40 else
 41   HS_ALT_SRC=NO_SUCH_PATH
 42 endif
 43 HS_COMMON_SRC=$(GAMMADIR)/$(HS_COMMON_SRC_REL)
 44 HS_ALT_SRC=$(GAMMADIR)/$(HS_ALT_SRC_REL)

The 'if' block sets HS_ALT_SRC_*REL*, but the else block sets
HS_ALT_SRC (no *REL*), and that is overwritten on line 44.

I think it works because after line 44, HS_ALT_SRC == $(GAMMADIR)/,
but I doubt that was intended.

You could change line 41 to

        HS_ALT_SRC_REL=$(HS_COMMON_SRC_REL)

Then when OPENJDK=true, HS_ALT_SRC==HS_COMMON_SRC, and you don't have
to rely on NO_SUCH_PATH.

I'd prefer to leave it as NO_SUCH_PATH. That way tests for the existence of that directory (or files in those directories) will correctly fail and won't mistakenly indicates that alt-srcs exist. I believe there are a number of tests like that already, but I'll bet it currently works fine (unintentionally) if HS_ALT_SRC == HS_COMMON_SRC.

--
- Keith

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