1 # SPDX-License-Identifier: BSD-3-Clause
2 # Copyright(c) 2018 Intel Corporation
6 kernel_build_dir = get_option('kernel_dir')
7 kernel_install_dir = ''
8 install = not meson.is_cross_build()
11 if not meson.is_cross_build()
13 kernel_version = run_command('uname', '-r').stdout().strip()
14 kernel_install_dir = '/lib/modules/' + kernel_version + '/extra/dpdk'
15 if kernel_build_dir == ''
16 # use default path for native builds
17 kernel_build_dir = '/lib/modules/' + kernel_version + '/build'
20 # test running make in kernel directory, using "make kernelversion"
21 make_returncode = run_command('make', '-sC', kernel_build_dir,
22 'kernelversion').returncode()
23 if make_returncode != 0
24 # backward compatibility:
25 # the headers could still be in the 'build' subdir
26 if not kernel_build_dir.endswith('build') and not kernel_build_dir.endswith('build/')
27 kernel_build_dir = join_paths(kernel_build_dir, 'build')
28 make_returncode = run_command('make', '-sC', kernel_build_dir,
29 'kernelversion').returncode()
33 if make_returncode != 0
34 error('Cannot compile kernel modules as requested - are kernel headers installed?')
37 # DO ACTUAL MODULE BUILDING
46 # if we are cross-compiling we need kernel_build_dir specified
47 if kernel_build_dir == ''
48 error('Need "kernel_dir" option for kmod compilation when cross-compiling')
50 cross_compiler = find_program('c').path()
51 if cross_compiler.endswith('gcc')
52 cross_prefix = run_command([py3, '-c', 'print("' + cross_compiler + '"[:-3])']).stdout().strip()
53 elif cross_compiler.endswith('clang')
56 # search for '-target' and use the arg that follows
57 # (i.e. the value of '-target') as cross_prefix
58 foreach cross_c_arg : meson.get_cross_property('c_args')
59 if found_target and cross_prefix == ''
60 cross_prefix = cross_c_arg
62 if cross_c_arg == '-target'
67 error('Did not find -target and its value in c_args in input cross-file.')
70 foreach cross_c_link_arg : meson.get_cross_property('c_link_args')
71 if cross_c_link_arg.startswith('-fuse-ld')
72 linker = cross_c_link_arg.split('=')[1]
75 cross_args += ['CC=@0@'.format(cross_compiler), 'LD=ld.@0@'.format(linker)]
77 error('Unsupported cross compiler: @0@'.format(cross_compiler))
80 cross_arch = host_machine.cpu_family()
81 if host_machine.cpu_family() == 'aarch64'
85 cross_args += ['ARCH=@0@'.format(cross_arch),
86 'CROSS_COMPILE=@0@'.format(cross_prefix)]
88 # DO ACTUAL MODULE BUILDING