How to build jemalloc for Windows
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1. Install Cygwin with at least the following packages:
* autoconf
* autogen
* gawk
* grep
* sed
2. Install Visual Studio 2015 or 2017 with Visual C++
3. Add Cygwin\bin to the PATH environment variable
4. Open "x64 Native Tools Command Prompt for VS 2017"
(note: x86/x64 doesn't matter at this point)
5. Generate header files:
sh -c "CC=cl ./autogen.sh"
6. Now the project can be opened and built in Visual Studio:
msvc\jemalloc_vc2017.sln
