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I would like to install OpenMotif on an AIX 7.1, but it gave an error of missing lex. How can I install lex on AIX 7.1? Where can I find the package for it?

I got the following error when installing OpenMotif:

Target "includes" is up to date.

including in ./tools/wml...

lex wmllex.l

lex: not found

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If you ask a vague question, you’ll get a vague answer. But if you give details and context, users around here can provide a useful answer. –  Ash Oct 7 '13 at 16:41
Updated question will error message. –  c0demonkey Oct 7 '13 at 17:12

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