Precompiled versions of these tools are provided here and are installed as follows:
Unzip the precompiled tools into "C:\". This will create "C:\TOOLS" containing "FLEX.EXE", "BISON.EXE", and "C:\TOOLS\SHARE" containing "BISON.SIMPLE" and "BISON.HAIRY".
IMPORTANT NOTE: Don't be tempted to install bison and flex into a directory other than C:\TOOLS. It can be done, but it's not easy and not worth the effort.
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