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problems while invoking flex

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Old   May 18, 2009, 13:26
Default problems while invoking flex
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Jan Oberhagemann
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Hi there,

i am trying to compile OpenFOAM-1.5-dev on Scientific Linux 5, 64bit. The third party packages have successfully been compiled and linked, but starting "Allwmake" in the OpenFOAM-1.5-dev directory, i almost immediately trap into some error messages:
(...)
+ wmake libso triSurface
flex: unknown flag '-'. For usage, try
flex --help
mv: cannot stat `lex.yy.cc': No such file or directory

Does anyone have a clue?

Best regards,
Jan
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Old   May 20, 2009, 06:20
Default ...old flex
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Dragos
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Hi Jan,
You probably have an old version of flex.

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Old   May 20, 2009, 12:48
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using version 2.5.4 seems to work. Thanks a lot!
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Old   May 20, 2009, 13:17
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2.5.4.... uh, that's old!
According to flex website (http://flex.sourceforge.net/) this version was released in 1997.
The latest version available is 2.5.35, released last year. There are some memory leaks associated with older flex versions, so it would be a good idea to update.

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Old   May 20, 2009, 13:32
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you`re right. seems like a good idea to switch to something newer...
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