package/volk: new package

VOLK is the Vector-Optimized Library of Kernels

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Reviewed-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1205,6 +1205,7 @@ F:	package/python-markdown/
 F:	package/python-remi/
 F:	package/python-sip/
 F:	package/uhd/
+F:	package/volk/
 
 N:	Heiko Thiery <heiko.thiery@gmail.com>
 F:	board/kontron/bl-imx8mm/

package/Config.in

@@ -2071,6 +2071,7 @@ endif
 	source "package/tz/Config.in"
 	source "package/tzdata/Config.in"
 	source "package/uvw/Config.in"
+	source "package/volk/Config.in"
 	source "package/xapian/Config.in"
 endmenu
 

package/volk/Config.in

@@ -0,0 +1,33 @@
+comment "volk needs a toolchain w/ C++, NPTL, wchar, dynamic library"
+	depends on BR2_USE_MMU
+	depends on BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR || \
+		!BR2_TOOLCHAIN_HAS_THREADS_NPTL || BR2_STATIC_LIBS
+
+config BR2_PACKAGE_VOLK
+	bool "volk"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on !BR2_STATIC_LIBS
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
+	depends on BR2_USE_MMU # use fork()
+	depends on BR2_USE_WCHAR # boost
+	depends on BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS # boost-filesystem
+	select BR2_PACKAGE_BOOST
+	select BR2_PACKAGE_BOOST_FILESYSTEM
+	select BR2_PACKAGE_BOOST_SYSTEM
+	help
+	  VOLK is the Vector-Optimized Library of Kernels. It is a
+	  library that contains kernels of hand-written SIMD code
+	  for different mathematical operations. Since each SIMD
+	  architecture can be very different and no compiler has yet
+	  come along to handle vectorization properly or highly
+	  efficiently, VOLK approaches the problem differently.
+
+	  For each architecture or platform that a developer wishes
+	  to vectorize for, a new proto-kernel is added to VOLK. At
+	  runtime, VOLK will select the correct proto-kernel. In this
+	  way, the users of VOLK call a kernel for performing the
+	  operation that is platform/architecture agnostic. This
+	  allows us to write portable SIMD code.
+
+	  https://www.libvolk.org/

package/volk/volk.hash

@@ -0,0 +1,4 @@
+# Locally computed
+sha256  3f092737006ad2b7d24852833cf040e725c6f47d68ec2f4197895f84c6400bd8  volk-2.5.1.tar.xz
+sha256  6dcdafa9e750545f5f65c2e6f53820184822db728ac2b8bfe1d4a47da09ec0d6  COPYING
+sha256  258f450f060a161fb9f9e2e7c07c6b1ee73e5142297e6792dc1ee76b028cf0ca  COPYING-LGPL

package/volk/volk.mk

@@ -0,0 +1,42 @@
+################################################################################
+#
+# volk
+#
+################################################################################
+
+VOLK_VERSION = 2.5.1
+VOLK_SITE = https://github.com/gnuradio/volk/releases/download/v$(VOLK_VERSION)
+VOLK_SOURCE = volk-$(VOLK_VERSION).tar.xz
+# See https://github.com/gnuradio/volk/tree/v2.5.1#license for some
+# details on the licensing.
+VOLK_LICENSE = GPL-3.0+
+VOLK_LICENSE_FILES = COPYING COPYING-LGPL
+
+VOLK_SUPPORTS_IN_SOURCE_BUILD = NO
+
+# host-python-mako are needed for volk to compile
+VOLK_DEPENDENCIES = host-python3 host-python-mako boost
+
+VOLK_CONF_OPTS = \
+	-DPYTHON_EXECUTABLE=$(HOST_DIR)/bin/python3 \
+	-DENABLE_MODTOOL=OFF \
+	-DENABLE_TESTING=OFF \
+	-DENABLE_PROFILING=OFF \
+	-DVOLK_PYTHON_DIR=lib/python$(PYTHON3_VERSION_MAJOR)/site-packages
+
+# For third-party blocks, the volk library is mandatory at
+# compile time.
+VOLK_INSTALL_STAGING = YES
+
+ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
+VOLK_CONF_OPTS += -DCMAKE_EXE_LINKER_FLAGS=-latomic
+endif
+
+ifeq ($(BR2_PACKAGE_ORC),y)
+VOLK_DEPENDENCIES += orc
+VOLK_CONF_OPTS += -DENABLE_ORC=ON
+else
+VOLK_CONF_OPTS += -DENABLE_ORC=OFF
+endif
+
+$(eval $(cmake-package))