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Ben Gamari authored
Relying on CallStack being in GLASGOW_HASKELL >= 710 breaks bootstrappability with 7.10.1 7.10.2 added the CallStack mechanism, and GHC already relies on this while being built. Unfortunately, it is enabled with "GLASGOW_HASKELL >= 710", which also applies to GHC 7.10.1, which does not have CallStack, and fails building the stage-1 compiler because the symbol is not found. This patch makes the CPP directive more strict, requiring **more than** 7.10 instead of **at least**. Reviewers: jstolarek, austin, bgamari Reviewed By: bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1472 GHC Trac Issues: #11085
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