[dpdk-dev] [PATCH v2] kernel/linux: fix modules install path

[Igor Ryzhov]

Currently kernel modules are installed into /usr/src instead of
/lib/modules when meson build system is used. This patch fixes that.

Signed-off-by: Igor Ryzhov <iryzhov at nfware.com>
---
v2 - don't change kernel_dir to kernel_version

 kernel/linux/igb_uio/meson.build | 4 ++--
 kernel/linux/kni/meson.build     | 4 ++--
 kernel/linux/meson.build         | 4 ++--
 meson_options.txt                | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/kernel/linux/igb_uio/meson.build b/kernel/linux/igb_uio/meson.build
index f5a9d5ccf..fac404f07 100644
--- a/kernel/linux/igb_uio/meson.build
+++ b/kernel/linux/igb_uio/meson.build
@@ -8,7 +8,7 @@ mkfile = custom_target('igb_uio_makefile',
 custom_target('igb_uio',
 	input: ['igb_uio.c', 'Kbuild'],
 	output: 'igb_uio.ko',
-	command: ['make', '-C', kernel_dir,
+	command: ['make', '-C', kernel_dir + '/build',
 		'M=' + meson.current_build_dir(),
 		'src=' + meson.current_source_dir(),
 		'EXTRA_CFLAGS=-I' + meson.current_source_dir() +
@@ -16,5 +16,5 @@ custom_target('igb_uio',
 		'modules'],
 	depends: mkfile,
 	install: true,
-	install_dir: kernel_dir + '/../extra/dpdk',
+	install_dir: kernel_dir + '/extra/dpdk',
 	build_by_default: get_option('enable_kmods'))
diff --git a/kernel/linux/kni/meson.build b/kernel/linux/kni/meson.build
index a9f48b0e6..955eec949 100644
--- a/kernel/linux/kni/meson.build
+++ b/kernel/linux/kni/meson.build
@@ -13,7 +13,7 @@ kni_sources = files(
 custom_target('rte_kni',
 	input: kni_sources,
 	output: 'rte_kni.ko',
-	command: ['make', '-j4', '-C', kernel_dir,
+	command: ['make', '-j4', '-C', kernel_dir + '/build',
 		'M=' + meson.current_build_dir(),
 		'src=' + meson.current_source_dir(),
 		'MODULE_CFLAGS=-include ' + meson.source_root() + '/config/rte_config.h' +
@@ -25,5 +25,5 @@ custom_target('rte_kni',
 	depends: kni_mkfile,
 	console: true,
 	install: true,
-	install_dir: kernel_dir + '/../extra/dpdk',
+	install_dir: kernel_dir + '/extra/dpdk',
 	build_by_default: get_option('enable_kmods'))
diff --git a/kernel/linux/meson.build b/kernel/linux/meson.build
index a37c95752..1796cc686 100644
--- a/kernel/linux/meson.build
+++ b/kernel/linux/meson.build
@@ -13,11 +13,11 @@ 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'
+	kernel_dir = '/lib/modules/' + kernel_version
 endif
 
 # test running make in kernel directory, using "make kernelversion"
-make_returncode = run_command('make', '-sC', kernel_dir,
+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?')
diff --git a/meson_options.txt b/meson_options.txt
index 16d9f92c6..5302b9c68 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -15,7 +15,7 @@ option('ibverbs_link', type: 'combo', choices : ['shared', 'dlopen'], value: 'sh
 option('include_subdir_arch', type: 'string', value: '',
 	description: 'subdirectory where to install arch-dependent headers')
 option('kernel_dir', type: 'string', value: '',
-	description: 'path to the kernel for building kernel modules, they will be installed in $DEST_DIR/$kernel_dir/../extra/dpdk')
+	description: 'Path to the kernel for building kernel modules. Headers must be in $kernel_dir/build. Modules will be installed in $DEST_DIR/$kernel_dir/extra/dpdk.')
 option('lib_musdk_dir', type: 'string', value: '',
 	description: 'path to the MUSDK library installation directory')
 option('machine', type: 'string', value: 'native',
-- 
2.21.0