The environment setup utilities set the following environment variables used by the BUILD procedure:
The BUILD_DEFAULT and BUILD_DEFAULT_TARGETS environment variables are set by setenv.bat as follows:
set BUILD_DEFAULT= -e -i -nmake -i set BUILD_DEFAULT_TARGETS=-386
The BUILD_OPTIONS environment variable also is set by setenv.bat. Usually, it specifies additional components that need to be built. A typical command would be:
set BUILD_OPTIONS=v7 et4000 vga