Date: Wed, 24 Feb 2016 13:54:25 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Raphael Kubo da Costa <rakuco@FreeBSD.org> Cc: freebsd-toolchain@freebsd.org Subject: Re: clang -pg, libm and the _end symbol Message-ID: <1CEB597F-1446-4E73-B5E2-5E5A4B3E9313@FreeBSD.org> In-Reply-To: <86povmbb7c.fsf@FreeBSD.org> References: <86povmbb7c.fsf@FreeBSD.org>
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On 24 Feb 2016, at 12:27, Raphael Kubo da Costa <rakuco@FreeBSD.org> wrote:
>
> I'm reviewing an update to the textproc/miller port in bug 207194, and
> noticed it does some ugly things in post-configure to seemingly
> work around the following problem (on 11-HEAD at least):
>
> % echo 'int main(void) { return 0; }' > foo.c
> % clang -pg foo.c -lm
> /usr/bin/ld: undefined reference to symbol `_end' (try adding -lc)
> //lib/libc.so.7: could not read symbols: Bad value
> cc: error: linker command failed with exit code 1 (use -v to see
> invocation)
Try using: clang -pg foo.c -lm_p
That works for me (also with gcc).
-Dimitry
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