%define debug_package %{nil}
%define _lapack_pkg lapack-3.1.1
%define _lapack_builddir_static %{_lapack_pkg}_static
%define _lapack_builddir_shared %{_lapack_pkg}_shared

%define _atlas_pkg ATLAS
%define _atlas_builddir_static %{_atlas_pkg}_static
%define _atlas_builddir_shared %{_atlas_pkg}_shared

%define _soversionmajor 3
%define _soversionminor 0
%ifarch x86_64
%define _bit_width 64
%define _lapack_make_inc make.inc.64
%else
%define _bit_width 32
%define _lapack_make_inc  make.inc.32
%endif

Name:           atlas
Version:        3.8.0
Release:        1
Summary:        Automatically Tuned Linear Algebra Software

Group:          System Environment/Libraries
License:        BSD
URL:            http://math-atlas.sourceforge.net
Source:         %{name}-%{version}.tar.gz
BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)

Requires:       %{_sysconfdir}/ld.so.conf.d
Requires(post): /sbin/ldconfig
Requires(postun): /sbin/ldconfig
Requires: gawk
Requires: grep
Requires: coreutils
Requires: util-linux
BuildRequires:  gcc-gfortran gcc


%description
The ATLAS (Automatically Tuned Linear Algebra Software) project is an
ongoing research effort focusing on applying empirical techniques in
order to provide portable performance. At present, it provides C and
Fortran77 interfaces to a portably efficient BLAS implementation, as
well as a few routines from LAPACK.

The performance improvements in ATLAS are obtained largely via
compile-time optimizations and tend to be specific to a given hardware
configuration. In order to package ATLAS for Fedora some compromises
are necessary so that good performance can be obtained on a variety
of hardware. This set of ATLAS binary packages is therefore not
necessarily optimal for any specific hardware configuration.  However,
the source package can be used to compile customized ATLAS packages;
see the documentation for information.


%package devel
Summary:        Development libraries for ATLAS
Group:          Development/Libraries
Requires:       %{name} = %{version}-%{release}

%description devel
This package contains the static/dynamic libraries and headers for development
with ATLAS (Automatically Tuned Linear Algebra Software).


%prep
%setup -q -n %{name}

%if "%{?_use_prebuilt_binary}" == "1"
%build
# ... nothing to build, use ATLAS binaries pre-built by user

%install
rm -rf %{buildroot}
mkdir -p %{buildroot}
_prebuilt_tarball="%{name}-prebuilt.tar.bz2"
if [ -f "${_prebuilt_tarball}" ]; then
   tar xjf "${_prebuilt_tarball}" -C %{buildroot}
else 
   echo "ERROR: Cannot find ${_prebuilt_tarball}. Aborting..."
   exit 1
fi

%else

%build
# Step 1a - Build LAPACK (for static ATLAS lib)
tar xzf %{_lapack_pkg}.tgz
mv -f %{_lapack_pkg} %{_lapack_builddir_static}
cp -f %{_lapack_make_inc} %{_lapack_builddir_static}/make.inc
( cd %{_lapack_builddir_static}; 
  sed -i -e 's/-fPIC//g'  make.inc; 
  make lib
)
_cwd=`pwd`
_lapack_static_lib="${_cwd}/%{_lapack_builddir_static}/lapack_LINUX.a"

# Step 1b - Build LAPACK (for shared ATLAS lib)
tar xzf %{_lapack_pkg}.tgz
mv -f %{_lapack_pkg} %{_lapack_builddir_shared}
cp -f %{_lapack_make_inc} %{_lapack_builddir_shared}/make.inc
( cd %{_lapack_builddir_shared}; 
  make lib
)
_cwd=`pwd`
_lapack_shared_lib="${_cwd}/%{_lapack_builddir_shared}/lapack_LINUX.a"

# Step 2a - Build ATLAS (static lib)
tar xjf %{name}%{version}.tar.bz2
patch -p0 < atlas.patch
cd ATLAS 
mkdir -p %{_atlas_builddir_static}
( cd %{_atlas_builddir_static}; 
  ../configure -b %{_bit_width} \
             --prefix=%{buildroot} \
             --with-netlib-lapack=${_lapack_static_lib}; 
  make build; 
  make check; 
  make time;
)

# Step 2b - Build ATLAS (shared lib)
mkdir -p %{_atlas_builddir_shared}
( cd %{_atlas_builddir_shared};
  ../configure -b %{_bit_width} -Fa alg -fPIC \
             --prefix=%{buildroot} \
             --with-netlib-lapack=${_lapack_shared_lib};
  make build;
  make check;
  make time;
  cd lib;
  make shared; 
  for lib in libatlas.so liblapack.so libf77blas.so libcblas.so; do
     mv $lib ${lib}.%{_soversionmajor}.%{_soversionminor}
     ln -s ${lib}.%{_soversionmajor}.%{_soversionminor} \
           ${lib}.%{_soversionmajor}
     ln -s ${lib}.%{_soversionmajor}.%{_soversionminor} ${lib}
  done
)

%install
_arch=`/bin/arch`
_vendor_str=`cat /proc/cpuinfo | grep -i vendor_id | head -1 | awk '{print $3}'`
_cpu_platform="${_vendor_str}_${_arch}"

rm -rf %{buildroot}
mkdir -p %{buildroot}%{_sysconfdir}/ld.so.conf.d/%{name}
mkdir -p %{buildroot}%{_includedir}/%{name}
mkdir -p %{buildroot}%{_libdir}/%{name}_${_cpu_platform}
mkdir -p %{buildroot}%{_defaultdocdir}/%{name}-%{version}

cd ATLAS
cp -a include/*.h %{buildroot}%{_includedir}/%{name}
cp -a doc/* %{buildroot}%{_defaultdocdir}/%{name}-%{version}
echo "%{_libdir}/%{name}" > %{buildroot}%{_sysconfdir}/ld.so.conf.d/%{name}.conf
( cd %{_atlas_builddir_static};
  cp -a lib/*.a %{buildroot}%{_libdir}/%{name}_${_cpu_platform}
)
( cd %{_atlas_builddir_shared};
  cp -a lib/*.so* %{buildroot}%{_libdir}/%{name}_${_cpu_platform}
)


%endif # %if "%{?_use_prebuilt_binary}" == "1" 

%files
%defattr(-,root,root,-)
%dir %{_libdir}/%{name}_*
%{_libdir}/%{name}_*/*.so.*
%{_sysconfdir}/ld.so.conf.d/%{name}.conf

%files devel
%defattr(-,root,root,-)
%dir %{_libdir}/%{name}_*
%{_defaultdocdir}/%{name}-%{version}
%{_libdir}/%{name}_*/*.so
%{_libdir}/%{name}_*/*.a
%{_includedir}/%{name}

%post
_arch=`/bin/arch`
_vendor_str=`cat /proc/cpuinfo | grep -i vendor_id | head -1 | awk '{print $3}'`
_cpu_platform="${_vendor_str}_${_arch}"
_cpu_libdir="%{_libdir}/%{name}_${_cpu_platform}"

if [ -d "${_cpu_libdir}" ]; then
   ln -s "${_cpu_libdir}" "%{_libdir}/%{name}"
fi
/sbin/ldconfig

%postun
_atlas_symlink="%{_libdir}/%{name}"

if [ -h "${_atlas_symlink}" ]; then
   rm -f "${_atlas_symlink}"
fi
/sbin/ldconfig

%clean
rm -rf %{buildroot}