arpack-ng: update to 3.8.0.

Instead of using standard BLAS (package blas), use OpenBLAS (package
openblas) if available for the target architecture. Right now the only
package depending on arpack-ng is Octave and it uses OpenBLAS by
default, so I see no reason to use the slower standard BLAS on platforms
where OpenBLAS is available.

Also move headers into the -devel package.

srcpkgs/arpack-ng/template

@@ -1,17 +1,31 @@
 # Template file for 'arpack-ng'
 pkgname=arpack-ng
-version=3.7.0
+version=3.8.0
 revision=1
 build_style=gnu-configure
 hostmakedepends="automake libtool gcc-fortran pkg-config"
-makedepends="lapack-devel eigen"
+makedepends="eigen"
 short_desc="Collection of Fortran77 subroutines"
 maintainer="Diogo Leal <diogo@diogoleal.com>"
 license="BSD-3-Clause"
 homepage="https://github.com/opencollab/arpack-ng"
 changelog="https://raw.githubusercontent.com/opencollab/arpack-ng/master/CHANGES"
 distfiles="https://github.com/opencollab/arpack-ng/archive/${version}.tar.gz"
-checksum=972e3fc3cd0b9d6b5a737c9bf6fd07515c0d6549319d4ffb06970e64fa3cc2d6
+checksum=ada5aeb3878874383307239c9235b716a8a170c6d096a6625bfd529844df003d
+
+# As of 2021-01-03 arpack-ng is only used by octave which includes openblas as
+# its BLAS implementation. So if openblas is available for XBPS_TARGET_MACHINE,
+# use it and if not fall back to regular blas.
+case "$XBPS_TARGET_MACHINE" in
+	# List of supported architectures copied from openblas.
+	armv[67]*|aarch64*|i686*|x86_64*|ppc64*)
+		makedepends+=" openblas-devel"
+		configure_args=" --with-blas=openblas --with-lapack=openblas"
+		;;
+	*)
+		makedepends+=" blas-devel lapack-devel"
+		;;
+esac
 
 pre_configure() {
 	./bootstrap
@@ -25,8 +39,9 @@ arpack-ng-devel_package() {
 	short_desc+=" - development files"
 	depends="${makedepends} ${sourcepkg}>=${version}_${revision}"
 	pkg_install() {
-		vmove "usr/lib/*.a"
-		vmove "usr/lib/*.so"
+		vmove usr/lib/cmake
 		vmove usr/lib/pkgconfig
+		vmove usr/include/arpack
+		vmove "usr/lib/*.so"
 	}
 }