Now that kernel modules aren't built by default, we can be more
strict with their build process, and fail the build if they were
requested to be built, but weren't.

Signed-off-by: Anatoly Burakov <anatoly.bura...@intel.com>
---
 kernel/linux/meson.build | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/linux/meson.build b/kernel/linux/meson.build
index 1796cc6861..da79df1687 100644
--- a/kernel/linux/meson.build
+++ b/kernel/linux/meson.build
@@ -5,8 +5,7 @@ subdirs = ['igb_uio', 'kni']
 
 # if we are cross-compiling we need kernel_dir specified
 if get_option('kernel_dir') == '' and meson.is_cross_build()
-       warning('Need "kernel_dir" option for kmod compilation when 
cross-compiling')
-       subdir_done()
+       error('Need "kernel_dir" option for kmod compilation when 
cross-compiling')
 endif
 
 kernel_dir = get_option('kernel_dir')
@@ -20,8 +19,7 @@ endif
 make_returncode = run_command('make', '-sC', kernel_dir + '/build',
                'kernelversion').returncode()
 if make_returncode != 0
-       warning('Cannot compile kernel modules as requested - are kernel 
headers installed?')
-       subdir_done()
+       error('Cannot compile kernel modules as requested - are kernel headers 
installed?')
 endif
 
 # DO ACTUAL MODULE BUILDING
-- 
2.17.1

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