[Pkg-bitcoin-commits] [bitcoin] 60/126: [Docs] Update Windows build instructions for using WSL and Ubuntu 17.04

[Jonas Smedegaard]

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js pushed a commit to annotated tag debian/0.15.1_dfsg-1
in repository bitcoin.

commit c94527a973611d7bc230af37d946d0c2d8b3ad13
Author: fanquake <fanquake at gmail.com>
Date:   Mon Oct 2 19:16:04 2017 +0800

    [Docs] Update Windows build instructions for using WSL and Ubuntu 17.04
    
    Github-Pull: #11437
    Rebased-From: 696ce46306e40f48dc4b2d7010812d564a43289d
---
 doc/build-windows.md | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/doc/build-windows.md b/doc/build-windows.md
index 24ca8fd..7527a41 100644
--- a/doc/build-windows.md
+++ b/doc/build-windows.md
@@ -4,10 +4,11 @@ WINDOWS BUILD NOTES
 Below are some notes on how to build Bitcoin Core for Windows.
 
 Most developers use cross-compilation from Ubuntu to build executables for
-Windows. This is also used to build the release binaries.
+Windows. Cross-compilation is also used to build the release binaries.
 
-Currently only building on Ubuntu Trusty 14.04 is supported.
-Other versions are unsupported or known to be broken (e.g. Ubuntu Xenial 16.04).
+Currently only building on Ubuntu Trusty 14.04 or Ubuntu Zesty 17.04 or later is supported.
+Building on Ubuntu Xenial 16.04 is known to be broken, see extensive discussion in issue [8732](https://github.com/bitcoin/bitcoin/issues/8732).
+While it may be possible to do so with work arounds, it's potentially dangerous and not recommended.
 
 While there are potentially a number of ways to build on Windows (for example using msys / mingw-w64),
 using the Windows Subsystem For Linux is the most straightforward. If you are building with
@@ -62,6 +63,14 @@ A host toolchain (`build-essential`) is necessary because some dependency
 packages (such as `protobuf`) need to build host utilities that are used in the
 build process.
 
+
+If you're building on Ubuntu 17.04 or later, run these two commands, selecting the 'posix' variant for both,
+to work around issues with mingw-w64. See issue [8732](https://github.com/bitcoin/bitcoin/issues/8732) for more information.
+```
+sudo update-alternatives --config x86_64-w64-mingw32-g++
+sudo update-alternatives --config x86_64-w64-mingw32-gcc
+```
+
 ## Building for 64-bit Windows
 
 To build executables for Windows 64-bit, install the following dependencies:
@@ -82,7 +91,7 @@ Then build using:
 
 To build executables for Windows 32-bit, install the following dependencies:
 
-    sudo apt-get install g++-mingw-w64-i686 mingw-w64-i686-dev 
+    sudo apt-get install g++-mingw-w64-i686 mingw-w64-i686-dev
 
 Then build using:
 

-- 
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