Re: mpb build error - for Mac OS X 10.7.2

You shouldn't need gfortran to compile BLAS/LAPACK since those libraries 
are already built into OS X as the veclib framework. You can find how to 
link against these native libraries online.

Regarding the configure error, you should look near the end of your 
config.log to see exactly what command caused the failure. It should 
list a short test program code as well as the command line used to 
compile it, and the error message.

On 12/19/2011 4:44 PM, Dongyoon Oh wrote:
>
>
> On Mon, Dec 19, 2011 at 4:40 PM, Dongyoon Oh <[email protected]
> <mailto:[email protected]>> wrote:
>
>     Hi,
>
>     I'm trying to build mpb on my Mac OS X 10.7.2 but I'm failing it for
>     some reasons.
>     Right now, the problem is related with BLAS and gfortran.
>
>     I installed gfortran from the package gcc-4.6.2 I downloaded from web.
>
>     I've also downloaded blas.tgz from http://www.netlib.org/blas/ and
>     made 'libblas.a':
>
>     ||
>     |cd BLAS|
>
>     |gfortran -c -O3 *.f|
>
>     |ar rv libblas.a *.o|
>
>     |sudo cp libblas.a /usr/local/lib|
>
>     (when I removed the command line options and just typed
>      >> gfortran *.f
>     I got the following error
>     Undefined symbols for architecture x86_64:
>     "_main", referenced from:
>            start in crt1.10.5.o
>     ld: symbol(s) not found for architecture x86_64)
>
>
>     Now, I set some variables
>     export CPPFLAGS="-I/usr/local/include -arch x86_64"
>     export CFLAGS="-I/usr/local/include -arch x86_64"
>     export CXXFLAGS="-I/usr/local/include -arch x86_64"
>     export LDFLAGS="-L/usr/local/lib"
>
>     * Fortran Related *
>     F77=$HOME/my_gcc/bin/my-gfortran
>     export
>     FLIBS="-L/Users/Dongyoon/my_gcc/lib/gcc/x86_64-apple-darwin11.2.0/4.6.2"
>     ./configure --prefix=/usr/local --with-blas=/usr/local/lib/libblas.a
>     --with-lapack=/usr/local/lib/liblapack.a
>     --with-libctl=/usr/local/share/libctl
>
>     Then configure :
>
>     ./configure --with-blas=/usr/local/lib/libblas.a
>     --with-lapack=/usr/local/lib/liblapack.a
>     --with-libctl=/usr/local/share/libctl
>
>     Then I get the error message :
>
>     checking for ATL_xerbla in -latlas... no
>     checking for sgemm_ in -lblas... no
>     checking for sgemm_ in -lcxml... no
>     checking for sgemm_ in -ldxml... no
>     checking for sgemm_ in -lscs... no
>     checking for sgemm_ in -lcomplib.sgimath... no
>     checking for sgemm_ in -lblas... (cached) no
>     checking for sgemm_ in -lblas... (cached) no
>     configure: error: BLAS was not found!
>
>
>     Since I linked to 'libblas.a' by command line options in
>     configuration, I'm not sure about the cause of the error.
>     Could this be related to fortran issue?
>
>     Best,
>     Dongyoon
>
>
>
>
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