#!/bin/sh

# Slackware build script for fftw
# Written by Kyle Guinn <elyk03@gmail.com>
# with a few enhancements from Heinz Wiesinger <pprkut@liwjatan.at> ;)

PRGNAM=fftw
VERSION=${VERSION:-3.2.2}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM-$VERSION
OUTPUT=${OUTPUT:-/tmp}

DOCS="AUTHORS CONVENTIONS COPY* ChangeLog INSTALL NEWS README* TODO doc/html"

if [ "$ARCH" = "i486" ]; then
	SLKCFLAGS="-O2 -march=i486 -mtune=i686"
	LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
	SLKCFLAGS="-O2 -march=i686 -mtune=i686"
	LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
	SLKCFLAGS="-O2 -fPIC"
	LIBDIRSUFFIX="64"
fi

if [ "${PORTABLE:-no}" = "no" ]; then
	# According to doc/fftw3.pdf the configure script should choose the best
	# value for $CFLAGS.  These variables must be unset so that the configure
	# script will decide.

	# If you are interested in further optimizations such as alternative
	# multithreading and support for other processors, check this page for
	# details:
	# http://www.fftw.org/fftw3_doc/Installation-on-Unix.html
	unset CFLAGS
	unset CXXFLAGS
	unset FFLAGS
	PKGARCH="custom"
	do_portable=""
else
	PKGARCH=$ARCH
	do_portable="--enable-portable-binary"
fi

if [ "${SSE:-no}" = "no" ]; then
	do_sse=""
else
	do_sse="--enable-sse"
fi

if [ "${SSE2:-no}" = "no" ]; then
	do_sse2=""
else
	do_sse2="--enable-sse2"
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
chmod -R u+w,go+r-w,a-st .

# compile libfftw3
./configure \
	--prefix=/usr \
	--libdir=/usr/lib${LIBDIRSUFFIX} \
	--sysconfdir=/etc \
	--localstatedir=/var \
	--mandir=/usr/man \
	--infodir=/usr/info \
	--docdir=/usr/doc/fftw-$VERSION \
	--enable-shared \
	--disable-static \
	--enable-threads \
	$do_sse2 \
	$do_portable
make
make install-strip DESTDIR=$PKG

# compile libfftw3f
./configure \
	--prefix=/usr \
	--libdir=/usr/lib${LIBDIRSUFFIX} \
	--sysconfdir=/etc \
	--localstatedir=/var \
	--mandir=/usr/man \
	--infodir=/usr/info \
	--docdir=/usr/doc/fftw-$VERSION \
	--enable-shared \
	--disable-static \
	--enable-threads \
	--enable-float \
	$do_sse \
	$do_portable
make
make install-strip DESTDIR=$PKG

# compile libfftw3l
./configure \
	--prefix=/usr \
	--libdir=/usr/lib${LIBDIRSUFFIX} \
	--sysconfdir=/etc \
	--localstatedir=/var \
	--mandir=/usr/man \
	--infodir=/usr/info \
	--docdir=/usr/doc/fftw-$VERSION \
	--enable-shared \
	--disable-static \
	--enable-threads \
	--enable-long-double \
	$do_portable
make
make install-strip DESTDIR=$PKG

( cd $PKG/usr/man
	find . -type f -exec gzip -9 {} \;
	for i in $(find . -type l); do \
		ln -s $(readlink $i).gz $i.gz; \
		rm $i; \
	done
)

rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$PKGARCH-$BUILD$TAG.${PKGTYPE:-tgz}