On Mon, Dec 19, 2011 at 4:40 PM, Dongyoon Oh <[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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