[ wxwindows-Bugs-1787512 ] wx-config gives erronous output

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Bugs item #1787512, was opened at 2007-09-04 07:59
Message generated for change (Comment added) made by neis
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Category: Utils
Group: Platform specific
Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Peter Lundgren (spirouz)
Assigned to: Nobody/Anonymous (nobody)
Summary: wx-config gives erronous output

Initial Comment:
I have discovered that wx-config in linux gives a funny output which messes up my linking. The output is this: "~$ wx-config --libs
-pthread   -lwx_gtk2u_xrc-2.6 -lwx_gtk2u_qa-2.6 -lwx_gtk2u_html-2.6 -lwx_gtk2u_adv-2.6 -lwx_gtk2u_core-2.6 -lwx_baseu_xml-2.6 -lwx_baseu_net-2.6 -lwx_baseu-2.6"

The first library parameter should be: "-lpthread". If I manually paste the text above and change the first parameter accordingly, the build succeeds. I discovered this in Gentoo and thought it was a flaw in the ebuild there, but now that I tested Ubuntu I get the same thing. It is also the same for wx-widgets 2.4 and 2.6.

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>Comment By: Stefan Neis (neis)
Date: 2007-09-04 09:04

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In general, building a threaded version might involve more than just
linking to the pthread library, e.g. linking to a thread-safe version of
the C library or to thread-safe version of gcc support libraries or passing
specific options to the linker or whatever.

"-pthread" (or "-pthreads", depending on platform and on gcc version) is
going to take care of _all_ these details, while -lpthread is only going to
do this one particular thing...

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Comment By: Peter Lundgren (spirouz)
Date: 2007-09-04 08:48

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I am very sorry! I must have messed up something else. Should have double
checked! I does work! VERY VERY SORRY! I don't understandy though why -l
should not be used with pthread! Isn't it a static linkage to the pthread
library? Would be happy for an explanation if you have time. 

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Comment By: Vadim Zeitlin (vadz)
Date: 2007-09-04 08:26

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What exactly is funny about this? "-pthread" is a valid gcc option, what
compiler/architecture do you use that it doesn't work for you?

Finally, replacing -pthread with -lpthread is *not* a safe thing to do.

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