problems while invoking flex

JObe · May 18, 2009, 13:26

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

dmoroian · May 20, 2009, 06:20

Hi Jan,
You probably have an old version of flex.

Dragos

JObe · May 20, 2009, 12:48

using version 2.5.4 seems to work. Thanks a lot!

dmoroian · May 20, 2009, 13:17

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.

Dragos

JObe · May 20, 2009, 13:32

you`re right. seems like a good idea to switch to something newer...

May 18, 2009, 13:26	problems while invoking flex	#1
JObe New Member Jan Oberhagemann Join Date: May 2009 Posts: 3 Rep Power: 17	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

May 20, 2009, 06:20	...old flex	#2
dmoroian Senior Member Dragos Join Date: Mar 2009 Posts: 648 Rep Power: 20	Hi Jan, You probably have an old version of flex. Dragos

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May 20, 2009, 12:48		#3
JObe New Member Jan Oberhagemann Join Date: May 2009 Posts: 3 Rep Power: 17	using version 2.5.4 seems to work. Thanks a lot!

May 20, 2009, 13:17		#4
dmoroian Senior Member Dragos Join Date: Mar 2009 Posts: 648 Rep Power: 20	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. Dragos

May 20, 2009, 13:32		#5
JObe New Member Jan Oberhagemann Join Date: May 2009 Posts: 3 Rep Power: 17	you`re right. seems like a good idea to switch to something newer...