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Date: Fri, 09 Nov 2012 19:02:48 +0100
From: Dimitry Andric <dim@FreeBSD.org>
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To: Steve Kargl <sgk@troutmask.apl.washington.edu>
Subject: Re: clang and static linking?
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On 2012-11-09 00:13, Steve Kargl wrote:
> Upgraded my amd64 system, yesterday.  Needed to rebuild one
> of my projects, and hit
>
> /usr/local/openmpi-1.6.3/bin/mpif90 -static -O2 -pipe -march=native -mtune=native -funroll-loops -ftree-vectorize -Wall -rpath /usr/local/lib/gcc46 -I/home/kargl/modules -o sasmp sasmp.f90 -L/home/kargl/lib -L. -L/usr/local/lib -L. -loa -lm90 -llapack -lblas
> //usr/lib/libc.a(isnan.o): In function `isnanf':
> /usr/src/lib/libc/gen/isnan.c:(.text+0x40): multiple definition of `__isnanf'
> //usr/lib/libm.a(s_isnan.o):/usr/src/lib/msun/src/s_isnan.c:(.text+0x0):
> first defined here
> collect2: ld returned 1 exit status
> *** [sasmp] Error code 1

Can you please post a reduced testcase?  I cannot reproduce this error
on -current, however much I tried.  My testcases attempted calling
isnan() and isnanf(), then I tried statically linking with libc and
libm, but it worked just fine...