# Contributor: William Pitcock <nenolod@dereferenced.org>
# Maintainer: William Pitcock <nenolod@dereferenced.org>
pkgname=fftw
pkgver=3.3.5
pkgrel=0
pkgdesc="fastest fourier transform in the west"
url="http://www.fftw.org/"
license="GPL"
depends=
makedepends="texinfo"
install=
# order of the libs split functions are important because of lib naming
subpackages="$pkgname-dev $pkgname-doc $pkgname-single-libs:single
	$pkgname-long-double-libs:long_double $pkgname-double-libs:double"
source="http://www.fftw.org/$pkgname-$pkgver.tar.gz
	cycle.h.patch"
arch="all"
_precision="single double long-double"

builddir="$srcdir/$pkgname-$pkgver"

prepare() {
	cd "$builddir"
	default_prepare || return 1
	for i in $_precision; do
		cp -r "$builddir" $srcdir/$i
	done
}

build() {
	for i in $_precision; do
		case "$i" in
			single)_cf="--enable-single";;
			double)_cf="";;
			long-double)_cf="--enable-long-double";;
		esac

		case "$i--$CARCH" in
		single--x86_64 | double--x86_64)
			_cf="$_cf --enable-sse2 --enable-avx";;
		single--arm* | single--aarch64)
			_cf="$_cf --enable-neon";;
		esac

		msg "Building for $i precision ($_cf)"
		cd "$srcdir"/$i
		./configure \
			--build=$CBUILD \
			--host=$CHOST \
			--prefix=/usr \
			--sysconfdir=/etc \
			--mandir=/usr/share/man \
			--infodir=/usr/share/info \
			--enable-shared \
			--enable-threads \
			$_cf \
			|| return 1
		make || return 1
	done
}

package() {
	for i in $_precision; do
		cd "$srcdir"/$i
		make DESTDIR="$pkgdir" install || return 1
	done
}

single() {
	mkdir -p "$subpkgdir"/usr/lib || return 1
	mv "$pkgdir"/usr/lib/libfftw3f*.so* \
		"$subpkgdir"/usr/lib/ || return 1
}

double() {
	mkdir -p "$subpkgdir"/usr/lib || return 1
	mv "$pkgdir"/usr/lib/libfftw3*.so* \
		"$subpkgdir"/usr/lib/ || return 1
}

long_double() {
	mkdir -p "$subpkgdir"/usr/lib || return 1
	mv "$pkgdir"/usr/lib/libfftw3l*.so* \
		"$subpkgdir"/usr/lib/ || return 1
}

md5sums="6cc08a3b9c7ee06fdd5b9eb02e06f569  fftw-3.3.5.tar.gz
81537a7e16451d3e66c025cbaba58973  cycle.h.patch"
sha256sums="8ecfe1b04732ec3f5b7d279fdb8efcad536d555f9d1e8fabd027037d45ea8bcf  fftw-3.3.5.tar.gz
1f2e555ceda21146bf7fce408f1a9a12782c646df6d23f3e2202ec7342c4ad01  cycle.h.patch"
sha512sums="a81f02d884cfe4171fab479b0e5ec76eceb9c5da6d4eda1f89281b7e1efa2d8176c9ba87051595c402889eb32172d216ce40eb2bef41289c646f01002fb4ba8e  fftw-3.3.5.tar.gz
d71ffb0aa658f7b22239491698426f4a97e657abc953020745f7581d2937a062a279eaa5980cd7f7fe2e8425a032eafc3d4c0cffdc79a83a3aef382c988d739a  cycle.h.patch"