gigevision: linux kernel driver

drivers/linux-gv/Kbuild

@@ -0,0 +1,3 @@
+ccflags-y := $(MODULE_CFLAGS)
+obj-m := aravis_gv.o
+aravis_gv-y := $(patsubst $(src)/%.c,%.o,$(wildcard $(src)/*.c))

drivers/linux-gv/meson.build

@@ -0,0 +1,13 @@
+gv_mkfile = custom_target('gv_makefile', output:'Makefile', command:['touch', '@OUTPUT@'])
+
+gv_sources = files([
+  'arvgvkmod.c'
+])
+
+custom_target ('gv_kmod',input: gv_sources, output: 'aravis_gv.ko', command:[
+  'make', '-j4', '-C', kernel_build_dir,
+  'M='+join_paths(meson.current_build_dir()),
+  'src='+join_paths(meson.current_source_dir()),
+  'MODULE_CFLAGS=-I'+meson.current_source_dir(),
+  'modules'], depends:gv_mkfile, build_by_default:true)
+

drivers/meson.build

@@ -0,0 +1,12 @@
+if host_machine.system()=='linux'
+  kernel_version = run_command('uname', '-r').stdout().strip()
+  kernel_build_dir = join_paths('/', 'lib', 'modules', kernel_version, 'build')
+
+  # test running make in kernel directory, using "make kernelversion"
+  make_returncode = run_command('make', '-sC', kernel_build_dir, 'kernelversion').returncode()
+  if make_returncode != 0
+    error('Cannot compile kernel modules as requested - are kernel headers installed?')
+  endif
+
+  subdir('linux-gv')
+endif

meson.build

@@ -120,6 +120,10 @@ viewer_deps = aravis_dependencies + [dependency ('gtk+-3.0', version: '>=3.12',
 subdir ('po', if_found: viewer_deps)
 subdir ('viewer', if_found: viewer_deps)
 
+if get_option('drivers')
+  subdir('drivers')
+endif
+
 gst_enabled = false
 gst_option = get_option ('gst-plugin')
 gst_deps = aravis_dependencies + [dependency ('gstreamer-base-1.0', required: gst_option),

meson_options.txt

@@ -13,6 +13,7 @@ option('fast-heartbeat', type: 'boolean', value: false, description: 'Enable fas
 option('gentl-producer', type: 'boolean', value: false, description : 'Enable experimental GenTL producer')
 option('event', type: 'boolean', value: false, description: 'Enable experimental event support')
 option('v4l2', type: 'feature', value: 'disabled', description : 'Enable experimental V4L2 support')
+option('drivers', type: 'boolean', value: false, description: 'Build linux driver')
 
 # Parameters