RFR: JDK-8251533 MacOS build of libjimage explicitly adds C++ standard library

[Erik Joelsson]

Looks good.

In the ADLC case, it seemed to be needed when linking with gcc instead 
of clang.

/Erik

On 2020-08-13 05:00, Magnus Ihse Bursie wrote:
> From the bug report:
>
> In CoreLibraries.gmk we have
>
> $(eval $(call SetupJdkLibrary, BUILD_LIBJIMAGE, \
> ...
> ???LIBS_unix := -ljvm -ldl $(LIBCXX), \
> ???LIBS_macosx := -lc++, \
>
> I think the LIBS_macosx line should not be needed. Other similar 
> places don't seem to do that. If it were necessary to explicitly add 
> the C++ standard library to the link command, that would be better 
> done by setting up LIBCXX.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8251533
> WebRev: 
> http://cr.openjdk.java.net/~ihse/JDK-8251533-libjimage-links-with-lc++/webrev.01
>
> /Magnus