README.md: set PYTHON2 env for Windows builds

Without this the build can fail to find a python27.exe
This commit is contained in:
Robert Bragg 2020-02-11 13:51:26 +00:00
parent c0ee7594c2
commit a9831716d7

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@ -194,6 +194,11 @@ export LIBCLANG_PATH=$(llvm-config --prefix)/lib64
You should change the installation to install the "Add python.exe to Path" feature.
You will also need to set the `PYTHON2` environment variable, e.g., to 'C:\Python27\python.exe' by doing:
```
setx PYTHON2 "C:\Python27\python.exe" /m
```
2. Install Python 3.7 for Windows (https://www.python.org/downloads/release/python-374/). The Windows x86-64 MSI installer is fine. This is required in order to build the JavaScript engine, SpiderMonkey.
You will also need to set the `PYTHON3` environment variable, e.g., to 'C:\Python37\python.exe' by doing: