maintainer-feedback requested: [Bug 245057] lang/ghc: drop GCC for powerpc64 elfv2

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Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-haskell mailing
list <haskell at FreeBSD.org> for maintainer-feedback:
Bug 245057: lang/ghc: drop GCC for powerpc64 elfv2
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=245057



--- Description ---
New bootstrap:
https://people.freebsd.org/~pkubaj/ghc-8.6.5-boot-powerpc64-freebsd-elfv2.tar.x
z

GCC is not required anymore on powerpc64 elfv2, but to also use lld, additional
patch is necessary. Also add USES=compiler:c11 to use GCC from ports on elfv1,
GHC can't be compiler with GCC 4.2.