New upstream version 18.08upstream/18.08

Change-Id: I32fdf5e5016556d9c0a6d88ddaf1fc468961790a
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/kernel/linux/meson.build b/kernel/linux/meson.build
new file mode 100644
index 00000000..a924c7b6
--- /dev/null
+++ b/kernel/linux/meson.build
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2018 Intel Corporation
+
+subdirs = ['igb_uio']
+
+WARN_CROSS_COMPILE='Need "kernel_dir" option for kmod compilation when cross-compiling'
+WARN_NO_HEADERS='Cannot compile kernel modules as requested - are kernel headers installed?'
+
+# if we are cross-compiling we need kernel_dir specified
+# NOTE: warning() function only available from version 0.44 onwards
+if get_option('kernel_dir') == '' and meson.is_cross_build()
+	if meson.version().version_compare('>=0.44')
+		warning(WARN_CROSS_COMPILE)
+	else
+		message('WARNING: ' + WARN_CROSS_COMPILE)
+	endif
+else
+
+	kernel_dir = get_option('kernel_dir')
+	if kernel_dir == ''
+		# use default path for native builds
+		kernel_version = run_command('uname', '-r').stdout().strip()
+		kernel_dir = '/lib/modules/' + kernel_version + '/build'
+	endif
+
+	# test running make in kernel directory, using "make kernelversion"
+	make_returncode = run_command('make', '-sC', kernel_dir,
+			'kernelversion').returncode()
+	if make_returncode != 0
+		if meson.version().version_compare('>=0.44')
+			warning(WARN_NO_HEADERS)
+		else
+			message('WARNING: ' + WARN_NO_HEADERS)
+		endif
+	else # returncode == 0
+
+# DO ACTUAL MODULE BUILDING
+		foreach d:subdirs
+			subdir(d)
+		endforeach
+	endif
+endif