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3.2.3 Environment variables

lilypond recognizes the following environment variables:

LILYPOND_DATADIR
This specifies a directory where locale messages and data files will be looked up by default. The directory should contain subdirectories called ly/, ps/, tex/, etc.
LANG
This selects the language for the warning messages.
LILYPOND_GC_YIELD
With this variable the memory footprint and performance can be adjusted. It is a percentage tunes memory management behavior. With higher values, the program uses more memory, with smaller values, it uses more CPU time. The default value is 70.

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