core/fftw/PKGBUILD
2016-01-19 23:20:00 +01:00

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# Contributions from Arch: https://projects.archlinux.org/svntogit/packages.git/tree/trunk?h=packages/fftw
pkgname=fftw
pkgver=3.3.4
pkgrel=1
pkgdesc="A library for computing the discrete Fourier transform (DFT)"
arch=('x86_64')
license=('GPL2')
url="http://www.fftw.org/"
depends=('gcc-libs' 'bash')
makedepends=('gcc-fortran')
options=('!libtool')
source=(http://www.fftw.org/${pkgname}-${pkgver}.tar.gz)
install=fftw.install
sha1sums=('fd508bac8ac13b3a46152c54b7ac885b69734262')
# notes:
# http://www.fftw.org/fftw2_doc/fftw_6.html#SEC69
# http://www.fftw.org/faq/section2.html#singleprec
# http://www.fftw.org/fftw3_doc/Precision.html#Precision
build() {
cd ${srcdir}
cp -a ${pkgname}-${pkgver} ${pkgname}-${pkgver}-double
cp -a ${pkgname}-${pkgver} ${pkgname}-${pkgver}-long-double
mv ${pkgname}-${pkgver} ${pkgname}-${pkgver}-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 ${srcdir}/${pkgname}-${pkgver}-double
$CONFIGURE --enable-sse2 --enable-avx
make
# build & install long double precission
cd ${srcdir}/${pkgname}-${pkgver}-long-double
$CONFIGURE --enable-long-double
make
# build & install single precision
cd ${srcdir}/${pkgname}-${pkgver}-single
$CONFIGURE --enable-float --enable-sse --enable-avx
make
}
package() {
cd ${srcdir}/${pkgname}-${pkgver}-double
make DESTDIR=${pkgdir} install
cd ${srcdir}/${pkgname}-${pkgver}-long-double
make DESTDIR=${pkgdir} install
cd ${srcdir}/${pkgname}-${pkgver}-single
make DESTDIR=${pkgdir} install
}