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1 files changed, 68 insertions, 0 deletions

diff --git a/PKGBUILD b/PKGBUILD
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+# Maintainer: GordonGR <ntheo1979@gmail.com>
+# Contributor: josephgbr <rafael.f.f1@gmail.com>
+
+_pkgname=fftw
+pkgname=lib32-${_pkgname}
+pkgver=3.3.4
+pkgrel=1
+pkgdesc="A library for computing the discrete Fourier transform (DFT) (32 bit)"
+arch=('x86_64')
+license=('GPL2')
+url="http://www.fftw.org/"
+depends=('lib32-glibc' "${_pkgname}")
+makedepends=('gcc-fortran-multilib')
+options=('!libtool')
+source=("http://www.fftw.org/${_pkgname}-${pkgver}.tar.gz")
+md5sums=('2edab8c06b24feeb3b82bbb3ebf3e7b3')
+
+# 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() {
+export CC='gcc -m32'
+export CXX='g++ -m32'
+export PKG_CONFIG_PATH='/usr/lib32/pkgconfig'
+  
+cp -af ${_pkgname}-${pkgver} ${_pkgname}-${pkgver}-double
+cp -af ${_pkgname}-${pkgver} ${_pkgname}-${pkgver}-long-double
+mv -f ${_pkgname}-${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 \
+	--libdir=/usr/lib32"
+
+msg "build double precision"
+cd ${srcdir}/${_pkgname}-${pkgver}-double
+$CONFIGURE --enable-sse2 --enable-avx
+make
+
+msg "build long double precision"
+cd ${srcdir}/${_pkgname}-${pkgver}-long-double
+$CONFIGURE --enable-long-double
+make
+
+msg "build 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
+
+rm -rf "${pkgdir}/usr"/{bin,include,share}
+}