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Document Windows installation hacks
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larsbergstrom committed Jul 24, 2016
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Expand Up @@ -80,14 +80,21 @@ Download Python for Windows [here](
required for the SpiderMonkey build on Windows.

Install MSYS2 from [here]( After you have done so, open an MSYS shell
window and update the core libraries and install new packages:
window and update the core libraries and install new packages. The extra step at the end is to
downgrate GCC to 5.4, as the GCC6 versions in mingw currently fail to compile some of our
dependencies. We are upgrading to a gcc-free build on Windows as soon as possible:

pacman -Su
pacman -Sy git mingw-w64-x86_64-toolchain mingw-w64-x86_64-freetype \
mingw-w64-x86_64-icu mingw-w64-x86_64-nspr mingw-w64-x86_64-ca-certificates \
mingw-w64-x86_64-expat mingw-w64-x86_64-cmake tar diffutils patch \
patchutils make python2-setuptools
export GCC_URL=
export GCC_EXT=5.4.0-1-any.pkg.tar.xz
pacman -U --noconfirm $GCC_URL-$GCC_EXT $GCC_URL-ada-$GCC_EXT \
$GCC_URL-fortran-$GCC_EXT $GCC_URL-libgfortran-$GCC_EXT $GCC_URL-libs-$GCC_EXT \
easy_install-2.7 pip virtualenv

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