Fixing -pthreads (Re: ports and -current)

[Loren James Rittle]

>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