Hi,

Thanks for Erik Joelsson for contributing this temporary?! fix for a
build issue with LOG=debug.

The actual issue is that on some systems with make 4.x when building
with LOG=debug MAKE_TEST_TARGETS receives debug output from the
shell'ed make invocation. This in turn changes ALL_NAMED_TESTS which is
iterated over in Main.gmk so as to produce test-<name> targets. This
fails for some of the supposed test names of: "gmake[1]:", "Leaving",
"directory" or "'<top-dir-path>'". All of them are bogus.

In other words, MAKE_TEST_TARGETS gets value:

make-base java-compilation copy-files idea compile-commands gmake[1]: Leaving 
directory '<top-dir-path>'

instead of:

make-base java-compilation copy-files idea compile-commands

This only happens the second time TestMake.gmk's print-targets is
executed. Why is it executed (at least) twice? The chain is something
like this:

Init.gmk => InitSupport.gmk (include) => Main.gmk (create-main-targets-include)
    => FindTests.gmk (include) => TestMake.gmk (print-targets)
    => Modules.gmk (include) => ??? => FindTests.gmk (include) => TestMake.gmk 
(print-targets)

As to where Modules.gmk depends on FindTests.gmk (or includes it) is a
mystery to me.

The proposed fix is to add --no-print-directory flag to the main make
invocation (Main.gmk).

Bug: https://bugs.openjdk.java.net/browse/JDK-8213736
webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8213736/webrev.01/

This allows me to build with LOG=debug again.

Thoughts?

Thanks,
Severin

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