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[c] is -lpthread correct option?

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Top Forums Programming [c] is -lpthread correct option?
# 1  
Old 08-03-2010
[c] is -lpthread correct option?
I read somewhere that I should use -pthread instead of -lpthread as compiler/linker flag, or define _REENTRANT. Is this incorrect to use only -lpthread? (I use gcc)
# 2  
Old 08-03-2010
With what OS and architecture ?
# 3  
Old 08-03-2010
Linux x86, x86_64 and FreeBSD x86, x86_64
# 4  
Old 08-03-2010
Older compilers often have/had requirements for other option flags but any modern compiler (say post 1999) should only require -lpthread.
# 5  
Old 08-03-2010
So I don't have to use -pthread or -D_REENTRANT?
I use -lpthread only when linking. For example:
gcc test.c -c -o test.o
gcc test.o -lpthread
Isn't that incorrect? (I know -l is linker option, but I want to be absolutely sure)
# 6  
Old 08-03-2010
It doesn't hurt to define _REENTRANT, even if it doesn't need to be required with current header files.
I would still use -pthread instead of -lpthread.
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