# Description: Optimized BLAS library
# URL: http://www.openblas.net/
# Maintainer: Tim Biermann, tbier at posteo dot de
# Packager: Pedja, predivan at mts dot rs
# Depends on: gcc-fortran

name=openblas
version=0.3.7
release=1
source=(https://github.com/xianyi/OpenBLAS/archive/v$version/OpenBLAS-$version.tar.gz)

build () {
  cd OpenBLAS-$version
  make NO_LAPACK=0 NO_STATIC=1 \
    USE_OPENMP=1 DYNAMIC_ARCH=1 DYNAMIC_OLDER=1 NUM_THREADS=64 \
    CFLAGS="$CFLAGS $CPPFLAGS" libs netlib shared
  make PREFIX=$PKG/usr install

  # Symlink to provide blas, cblas, lapack and lapacke
  cd $PKG/usr/lib/
  local _lapackver='3.8.0'
  # BLAS
  ln -sf libopenblas.so libblas.so
  ln -sf libopenblas.so libblas.so.${_lapackver:0:1}
  ln -sf libopenblas.so libblas.so.${_lapackver}
  # CBLAS
  ln -sf libopenblas.so libcblas.so
  ln -sf libopenblas.so libcblas.so.${_lapackver:0:1}
  ln -sf libopenblas.so libcblas.so.${_lapackver}
  # LAPACK
  ln -sf libopenblas.so liblapack.so
  ln -sf libopenblas.so liblapack.so.${_lapackver:0:1}
  ln -sf libopenblas.so liblapack.so.${_lapackver}
  # LAPACKE
  ln -sf libopenblas.so liblapacke.so
  ln -sf libopenblas.so liblapacke.so.${_lapackver:0:1}
  ln -sf libopenblas.so liblapacke.so.${_lapackver}

  # fix paths
  sed -i 's|'$PKG'||g' $PKG/usr/lib/cmake/$name/*.cmake
  sed -i 's|'$PKG'||g' $PKG/usr/lib/pkgconfig/openblas.pc

  # remove host CPU info if built with DYNAMIC_ARCH=1
  sed -i '/#define OPENBLAS_NEEDBUNDERSCORE/,/#define OPENBLAS_VERSION/{//!d}' \
    $PKG/usr/include/openblas_config.h
}