# No Testcase run by default. To enable: rpm(or rpmbuild) -ba --define 'dotests 1' openblas*.spec
%{!?dotests: %define dotests 0}
Summary:          An optimized BLAS library based on GotoBLAS2
Name:             openblas
Version:          0.3.5
Release:          1
License:          BSD
Group:            Development/Libraries
URL:              https://github.com/xianyi/OpenBLAS
Source0:          https://github.com/xianyi/OpenBLAS/archive/v%{version}/OpenBLAS-%{version}.tar.gz
Patch0:           openblas-Dont_cross_compile.patch
Patch1:           openblas-global_sym-aix.patch
BuildRoot:        %{_tmppath}/%{name}-%{version}-%{release}-root

BuildRequires: gcc-gfortran >= 6.3.0
BuildRequires: libgomp >= 6.3.0

Requires: libgcc >= 6.3.0
Requires: gcc-gfortran >= 6.3.0
Requires: libgomp >= 6.3.0

%description
OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.
It is an open source implementation of the BLAS (Basic Linear Algebra 
Subprograms) API with many hand-crafted optimizations for specific 
processor types.OpenBLAS adds optimized implementations of linear 
algebra kernels for several processor architectures.

This version is built with TARGET=POWER6 during make.
For more info, visit the below URL.
https://github.com/xianyi/OpenBLAS#installation-from-source

%prep
%setup -q -n OpenBLAS-%{version}
%patch0 -p0
%patch1 -p0


%build

PATH=/opt/freeware/bin:$PATH
export CC="gcc -maix64"
export CXX="g++ -maix64"
export FC="gfortran -maix64"

make BINARY=64 TARGET=POWER6

if [ "%{dotests}" == 1 ]
then
   cd utest
   gcc -maix64 -I.. -I. utest_main2.c ../libopenblas.a -lgomp -lpthread -lm -o utest2
   ./utest2
   cd ..
fi

#This needs CreateExportList which comes from XLC fileset.
#So better we use the one from GNU libtool

#/usr/vac/bin/CreateExportList -X64 openblas.exp libopenblas.a

`echo /usr/bin/nm -X32_64 | /usr/bin/sed -e 's/B\([^B]*\)$/P\1/'` -PCpgl libopenblas.a | \
/usr/bin/awk '{ if ((($ 2 == "T") || ($ 2 == "D") || ($ 2 == "B") || ($ 2 == "W") || ($ 2 == "V") || ($ 2 == "Z")) \
&& (substr($ 1,1,1) != ".")) { if (($ 2 == "W") || ($ 2 == "V") || ($ 2 == "Z")) { print $ 1 " weak" } \
else { print $ 1 } } }' | /usr/bin/sort -u > openblas.exp

export LDFLAGS="-lm -lpthread -lgfortran -lgomp -Wl,-bE:openblas.exp -Wl,-blibpath:/opt/freeware/lib:/usr/lib:/lib -Wl,-bbigtoc"

gcc -maix64 -shared libopenblas_power6p-r0.3.5.a -o libopenblas.so.0 $LDFLAGS


%install
[ "${RPM_BUILD_ROOT}" != "/" ] && rm -rf ${RPM_BUILD_ROOT}

PATH=/opt/freeware/bin:$PATH
export CC="gcc -maix64"
export CXX="g++ -maix64"
export FC="gfortran -maix64"

make install DESTDIR=${RPM_BUILD_ROOT} PREFIX=%{_prefix}

/usr/bin/rm ${RPM_BUILD_ROOT}/%{_libdir}/libopenblas.*

/usr/bin/ar -X64 -q ${RPM_BUILD_ROOT}/%{_libdir}/libopenblas.a libopenblas.so.0

%pre
# Processor Version: PV_7_Compat
# Processor Version: PV_6_Compat
# Processor Version: PV_5_Compat
ProcVersion=`prtconf | grep "Processor Version:" | awk -F_ '{ print $2}'`
#echo $ProcVersion
if [ $ProcVersion -lt 6 ]
then
        echo "This rpm will only work with Power6 (and above) compatibility mode."
        echo "prtconf: "
        prtconf | grep "Processor Version:"
        exit 1
fi


%clean
[ "${RPM_BUILD_ROOT}" != "/" ] && rm -rf ${RPM_BUILD_ROOT}


%files
%defattr(-,root,system)
%doc LICENSE README.md USAGE.md GotoBLAS_00License.txt
%{_libdir}/libopenblas.a
%{_libdir}/pkgconfig/openblas.pc
%{_includedir}/*


%changelog
* Wed Mar 20 2019 Ayappan P <ayappap2@in.ibm.com> - 0.3.5-1
- First port to AIX Toolbox