main/fftw: build shared libs

main/fftw/APKBUILD

@@ -2,14 +2,14 @@
 # Maintainer: William Pitcock <nenolod@dereferenced.org>
 pkgname=fftw
 pkgver=3.3.3
-pkgrel=0
+pkgrel=1
 pkgdesc="fastest fourier transform in the west"
 url="http://www.fftw.org/"
 license="GPL"
 depends=
 makedepends=
 install=
-subpackages="$pkgname-dev $pkgname-doc"
+subpackages="$pkgname-dev $pkgname-doc $pkgname-libs"
 source="http://www.fftw.org/$pkgname-$pkgver.tar.gz"
 arch="all"
 
@@ -30,6 +30,8 @@ build() {
 		--mandir=/usr/share/man \
 		--infodir=/usr/share/info \
 		--enable-single \
+		--enable-shared \
+		--enable-threads \
 		|| return 1
 	make || return 1
 }