All macosx builds in CI currently fail. This is caused by in issue with
JDK-8201483 which leaves the JVM_VARIANTS_server variable empty. The
construct used to subtract one set of strings from another doesn't work
quite as expected with bsd grep.
result=`$GREP -Fvx "$legal_values" <<< "$values_to_check" | $GREP -v '^$'`
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If the set to subtract ($legal_values) is empty, gnu grep returns all
values (as expected) while bsd grep returns nothing. To fix this I've
added an explicit check for the base case of legal_values being empty.
This seems to make --with-jvm-features work correctly on macosx and
still work correctly on Linux. A verification distributed build is under
way.
Bug: https://bugs.openjdk.java.net/browse/JDK-8201508
Webrev: http://cr.openjdk.java.net/~erikj/8201508/webrev.01/
/Erik
