Re: [AMBER-Developers] Problem configuring fftw

From: Tyler Luchko <>
Date: Mon, 13 Feb 2012 13:53:19 -0500

On 2012-02-13, at 1:22 PM, Romelia Salomon wrote:

> Hi
> I am having problems configuring Amber. I my system configuration is this
> Red Hat
> Red Hat Enterprise Linux Server release 5.7 (Tikanga)
> Kernel \r on an \m
> Version 10.1
> Using built-in specs.
> Target: x86_64-redhat-linux
> Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
> --infodir=/usr/share/info --enable-shared --enable-threads=posix
> --enable-checking=release --with-system-zlib --enable-__cxa_atexit
> --disable-libunwind-exceptions --enable-libgcj-multifile
> --enable-languages=c,c++,objc,obj-c++,java,fortran,ada
> --enable-java-awt=gtk --disable-dssi --disable-plugin
> --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-
> --with-cpu=generic --host=x86_64-redhat-linux
> Thread model: posix
> gcc version 4.1.2 20080704 (Red Hat 4.1.2-51)
> I did a fresh checkout of the git tree. I checked the log file and it
> seems to be a problem with gcc, which makes no sense to me since I was
> configuring with intel
> configure: error: Need a version of gcc with -mavx

It looks like your compiler is having issues with AVX, which I turned off in a commit yesterday... (sha1 id: 780eab02b7a19b1c812292287cb25ebbf087e0f8)

If you do have this commit, can you post the seventh line of


This will give the configure command with the flags that were used.

BTW, your log file seems to indicate that it was using the Intel compiler so I'm not sure about that error. However, your Intel compiler doesn't support AVX either.


Tyler Luchko
Postdoctoral Associate
Case Group
BioMaPS Institute
Rutgers University
Piscataway, New Jersey

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Received on Mon Feb 13 2012 - 11:00:02 PST
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