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pkgname=fftw-mpi
pkgver=3.3.6
pkgrel=2
pkgdesc="fftw, compiled with MPI and OpenMP support"
arch=('i686' 'x86_64')
license=('GPL2')
url="http://www.fftw.org/"
depends=('glibc' 'bash' 'openmpi')
conflicts=('fftw')
makedepends=('gcc-fortran')
source=("http://www.fftw.org/fftw-${pkgver}-pl2.tar.gz")
provides=('fftw')
install=fftw.install
sha1sums=('66384d4bf5da3efbcbb9d6ea92f0df264b1620b1')
# 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 ${srcdir}
cp -a fftw-${pkgver}-pl2 fftw-${pkgver}-double
cp -a fftw-${pkgver}-pl2 fftw-${pkgver}-long-double
mv fftw-${pkgver}-pl2 fftw-${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-mpi --enable-openmp"
# build double precision
cd ${srcdir}/fftw-${pkgver}-double
$CONFIGURE --enable-sse2
make
# build & install long double precission
cd ${srcdir}/fftw-${pkgver}-long-double
$CONFIGURE --enable-long-double
make
# build & install single precision
cd ${srcdir}/fftw-${pkgver}-single
$CONFIGURE --enable-float --enable-sse
make
}
package() {
cd ${srcdir}/fftw-${pkgver}-double
make DESTDIR=${pkgdir} install
cd ${srcdir}/fftw-${pkgver}-long-double
make DESTDIR=${pkgdir} install
cd ${srcdir}/fftw-${pkgver}-single
make DESTDIR=${pkgdir} install
}
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