# Description: A library for computing the discrete Fourier transform (DFT)
# URL: http://www.fftw.org/
# Packager: pierre at nutyx dot org

name=fftw
version=3.3.4
release=3

source=(http://www.fftw.org/$name-$version.tar.gz)

build() {
cd $SRC
  cp -a $name-$version $name-$version-double
  cp -a $name-$version $name-$version-long-double
  mv $name-$version $name-$version-single

# use upstream default CFLAGS while keeping our -march/-mtune
  CFLAGS+=" -O3 -fomit-frame-pointer -malign-double -fstrict-aliasing -ffast-math"

  CONFIGURE="./configure F77=gfortran --prefix=/usr \
                 --enable-shared --enable-threads \
		 --enable-openmp"

# build double precision
  cd $SRC/$name-$version-double
  $CONFIGURE --enable-sse2 --enable-avx
  make
  make DESTDIR=$PKG install

  # build & install long double precission
  cd $SRC/$name-$version-long-double
  $CONFIGURE --enable-long-double
  make
  make DESTDIR=$PKG install

  # build & install single precision
  cd $SRC/$name-$version-single
  $CONFIGURE --enable-float --enable-sse --enable-avx
  make
  make DESTDIR=$PKG install
  rm -rf $PKG/usr/share/info/dir
}