Re: GCC programming: header pthread not found but installed

[Brian Dessent <brian at dessent dot net>]

Serethos wrote:

> fails with a gcc call like:
> gcc test.c -lpthread
> 
> with the
> error: pthread.h: no such file or directory

The testcase compiles just fine for me with no errors.  Please review
the problem reporting guidelines at <http://cygwin.com/problems.html>. 
You did not provide the requested cygcheck output, and so there is not
enough information in your message to be of any more help.  As a guess I
would have to say that you're not using Cygwin's gcc due to some other
gcc being in the path, but that's just pure speculation.

By the way, including "-lpthread" is not necessary and serves no
purpose.  All of the pthread support is in -lcygwin (cygwin1.dll), which
gets linked against by the gcc specs file regardless of what options you
use (except of course for -mno-cygwin.)  There is no such separate
"pthreads library" as on unix, and libpthread.a is provided just so that
Makefiles that expect to be able to specify -lpthread continue to work,
but it is not necessary and serves no useful purpose.

Brian

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