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Date: Wed, 24 Sep 2003 22:36:59 -0500 (CDT)
From: Loren James Rittle <rittle@latour.rsch.comm.mot.com>
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Organization: Networks and Infrastructure Lab (IL02/2240), Motorola Labs
Subject: Re: Fixing -pthreads (Re: ports and -current)
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>I was looking through gcc last night to see how conceptually difficult
>it would be to do something like this.  But instead of a file, I was
>thinking of this process:
>
>* if env("PTHREADS_LIBS") then LDFLAGS += PTHREADS_LIBS
>* elseif fileexists("libpthread") then LDFLAGS += -lpthread
>* elseif fileexists("libthr") then LDFLAGS += -lthr
>* elseif fileexists("libc_r") then LDFLAGS += -lc_r
>* else error("Threading not supported.")

Hello Mike,

I too thought about making -pthread an exact alias for
env("PTHREADS_LIBS") (and, if empty, pick -lpthread or the classic
default -lc_r).  The main issue is that the FSF gcc has not accepted
any code into the gcc driver which depends on environment variables.

Loren