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[Mingw-cross-env-list] suggested GCC patch for exporting symbols needed

From: Hamza Alloush
Subject: [Mingw-cross-env-list] suggested GCC patch for exporting symbols needed by boost
Date: Sat, 4 Jul 2015 00:45:36 +0000


GCC post version 5 seems to have a bug, that prevents some symbols from 
exporting to the libstdc++, which prevents Boost from compiling. since then i 
had downgraded to GCC 4.9.2 in MXE to fix this issue.
but after posting to a ticket reporting this same issue on the bug tracker for 
GCC, they have admitted to fixing it and have since produced a patch, the patch 
is not intrusive and only adds a Mingw conditional to export some symbols 
whenever the "facet" codecvt_byname is called, which is used for code 
conversion by Boost.

you can find all the info in this report: 

i have submitted a patch for merging to the Upstream, would appreciate if you 
can look at it, test before/after Boost compile results, it is working for me 
personally now, but it might be helpful to have confirmations from other users!!

gist file:


proposed fix attached, merge request performed.


Attachment: gcc.patch
Description: Binary data

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