1 # SPDX-License-Identifier: BSD-3-Clause
2 # Copyright(c) 2018 Intel Corporation
6 kernel_build_dir = get_option('kernel_dir')
7 kernel_source_dir = get_option('kernel_dir')
8 kernel_install_dir = ''
9 install = not meson.is_cross_build()
12 if not meson.is_cross_build()
14 kernel_version = run_command('uname', '-r', check: true).stdout().strip()
15 kernel_install_dir = '/lib/modules/' + kernel_version + '/extra/dpdk'
16 if kernel_build_dir == ''
17 # use default path for native builds
18 kernel_build_dir = '/lib/modules/' + kernel_version + '/build'
20 if kernel_source_dir == ''
21 # use default path for native builds
22 kernel_source_dir = '/lib/modules/' + kernel_version + '/source'
25 # test running make in kernel directory, using "make kernelversion"
26 make_returncode = run_command('make', '-sC', kernel_build_dir,
27 'kernelversion', check: true).returncode()
28 if make_returncode != 0
29 # backward compatibility:
30 # the headers could still be in the 'build' subdir
31 if not kernel_build_dir.endswith('build') and not kernel_build_dir.endswith('build/')
32 kernel_build_dir = join_paths(kernel_build_dir, 'build')
33 make_returncode = run_command('make', '-sC', kernel_build_dir,
34 'kernelversion', check: true).returncode()
38 if make_returncode != 0
39 error('Cannot compile kernel modules as requested - are kernel headers installed?')
42 # DO ACTUAL MODULE BUILDING
51 # if we are cross-compiling we need kernel_build_dir specified
52 if kernel_build_dir == ''
53 error('Need "kernel_dir" option for kmod compilation when cross-compiling')
55 cross_compiler = find_program('c').path()
56 if cross_compiler.endswith('gcc')
57 cross_prefix = run_command([py3, '-c', 'print("' + cross_compiler + '"[:-3])'],
58 check: true).stdout().strip()
59 elif cross_compiler.endswith('clang')
62 # search for '-target' and use the arg that follows
63 # (i.e. the value of '-target') as cross_prefix
64 foreach cross_c_arg : meson.get_cross_property('c_args')
65 if found_target and cross_prefix == ''
66 cross_prefix = cross_c_arg
68 if cross_c_arg == '-target'
73 error('Did not find -target and its value in c_args in input cross-file.')
76 foreach cross_c_link_arg : meson.get_cross_property('c_link_args')
77 if cross_c_link_arg.startswith('-fuse-ld')
78 linker = cross_c_link_arg.split('=')[1]
81 cross_args += ['CC=@0@'.format(cross_compiler), 'LD=ld.@0@'.format(linker)]
83 error('Unsupported cross compiler: @0@'.format(cross_compiler))
86 cross_arch = host_machine.cpu_family()
87 if host_machine.cpu_family() == 'aarch64'
91 cross_args += ['ARCH=@0@'.format(cross_arch),
92 'CROSS_COMPILE=@0@'.format(cross_prefix)]
94 # DO ACTUAL MODULE BUILDING