MBK_OUT_FILTER - define the input filter
See the file man1/alc_origin.1.
sets the output filter for writting compressed Alliance
files. Filter is typically a string containing filename and options. This
filter must read non compressed data flow on it standard input and write
compressed data flow on it standard output. If a non compressed version of a
file exist in the same target directory the designer want the save a file's
compressed version, to ensure that file will be read later and not the non
compressed one, the non compressed file is DELETED. To activate filters,
variable MBK_FILTER_SFX must be set.
Writing compressed files with gzip :
setenv MBK_OUT_FILTER "/asim/gnu/bin/gzip -c"
setenv MBK_FILTER_SFX ".gz"
See the file man1/alc_bug_report.1.