examples: fix flattening directory layout on install

[ upstream commit e5b9500 ]

By installing the examples one-by-one in a loop in the examples
meson.build file we effectively flattened out the structure of the examples
folder and omitted some common and shared subfolders that were never
directly built.  Instead, we can remove the loop and just have the whole
"examples" folder installed as-is in a single statement, preserving its
directory structure, and thereby fixing the build of a number of the
examples.

Fixes: 2daf565 ("examples: install as part of ninja install")

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

examples/meson.build

@@ -46,13 +46,6 @@ all_examples = [
 	'vm_power_manager/guest_cli',
 	'vmdq', 'vmdq_dcb',
 ]
-# install all example code on install - irrespective of whether the example in
-# question is to be built as part of this build or not.
-foreach ex:all_examples
-	install_subdir(ex,
-			install_dir: get_option('datadir') + '/dpdk/examples',
-			exclude_files: 'meson.build')
-endforeach
 
 if get_option('examples') == ''
 	subdir_done()

meson.build

@@ -48,6 +48,9 @@ subdir('doc')
 # build any examples explicitly requested - useful for developers - and
 # install any example code into the appropriate install path
 subdir('examples')
+install_subdir('examples',
+	install_dir: get_option('datadir') + '/dpdk',
+	exclude_files: 'meson.build')
 
 # build kernel modules if enabled
 if get_option('enable_kmods')