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using -lpthread with gcc 4.0.1: necessary flag?

Subject: using -lpthread with gcc 4.0.1: necessary flag?
From: Peter Tanski <email@hidden>
Date: Mon, 28 Aug 2006 16:39:37 -0400
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Hello,

I am porting an open source program, Felix http:// felix.sourceforge.net, to OS X 10.4 using Apple Developer Tools' gcc 4.0.1. In the process of building Felix I found that small threaded programs do not require linkage to the pthread library--you do not need to add -lpthread to the gcc or g++ compiler commands to run the program.

Is -lpthread necessary for gcc 4.0.1? Does -lpthread add any special flags that might be necessary in a more complex program?

Thanks in advance,
Peter Tanski
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