optional intel-mkl, fallback openblas-lapack

1 files changed, 54 insertions, 9 deletions

diff --git a/PKGBUILD b/PKGBUILD
index f48cc53e138d..9a8c0fa08006 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -1,14 +1,15 @@
 # Maintainer:  Yigit Dallilar <yigit.dallilar@gmail.com>
+# Note: you need to install either atlas-lapack or openblas-lapack
 
 pkgname=astromatic-sextractor
 _pkgname=sextractor
 pkgver=2.25.0
-pkgrel=1
+pkgrel=2
 pkgdesc="builds a catalogue of objects from an astronomical image (build from source) "
 url="http://www.astromatic.net/software/sextractor"
 arch=('x86_64')
 license=('GPL')
-depends=('fftw' 'atlas-lapack')
+depends=('fftw' 'blas' 'cblas' 'lapack')
 makedepends=()
 provides=()
 conflicts=('sextractor-bin')
@@ -17,17 +18,61 @@ backup=()
 source=(https://github.com/astromatic/sextractor/archive/${pkgver}.tar.gz)
 sha1sums=('3ed53d55c0c77cd98a38bff1bde1b0d6fc625c18')
 
+_use_mkl=1   # If you want to compile against intel mkl, make the value other than 0.
+
+# decide which library to compile against
+configure_options() {
+
+	# First try intel-mkl if _use_mkl switch is on.
+	if [ "$_use_mkl" != 0 ]; then
+		_MKL=`pacman -Qq intel-mkl 2>/dev/null` || true
+		if [ "$_MKL" != "" ]; then
+			_COPTS="--enable-mkl"
+		else
+			echo "_use_mkl=1 but can not locate mkl libraries"
+			exit 1
+		fi
+		echo "Compiling against intel-mkl"
+		return
+	fi
+
+	# Try atlas-lapack first
+	_ATLAS=`pacman -Qq atlas-lapack 2>/dev/null` || true
+	if [ "$_ATLAS" != "" ]; then
+		_COPTS=""
+		echo "Compiling against atlas-lapack"
+		return
+	fi
+
+	# If atlas-lapack not installed, fall back to openblas-lapack
+	_OBLAS=`pacman -Qq opeblas-lapack 2>/dev/null` || true
+	if [ "$_OBLAS" != "" ]; then
+		_COPTS="--enable-openblas"
+		echo "Compiling against openblas-lapack"
+		return
+	fi
+
+	# If all fails exit and throw error. 
+	echo "Failed to locate appropriate library: atlas-lapack, openblas-lapack, intel-mkl"
+	exit 1
+}
+
 build() {
-  cd $srcdir/${_pkgname}-${pkgver}
-  sh autogen.sh
-  ./configure --prefix=/usr
-  make
+
+	configure_options
+
+	cd $srcdir/${_pkgname}-${pkgver}
+	sh autogen.sh
+	./configure --prefix=/usr $_COPTS
+	make
 }
 
 package() {
-  cd $srcdir/${_pkgname}-${pkgver}
-  make DESTDIR="$pkgdir" install
 
-  install -D -m644 LICENSE "${pkgdir}/usr/share/licenses/${_pkgname}/LICENSE"
+	cd $srcdir/${_pkgname}-${pkgver}
+	make DESTDIR="$pkgdir" install
+
+	install -D -m644 LICENSE "${pkgdir}/usr/share/licenses/${_pkgname}/LICENSE"
+
 }