c0ae70df35
When building the kernel modules, try to get the kernel version from the kernel sources first. This fixes the kernel modules installation directory if the target kernel version differs from the host kernel version, like for CI build or when packaging for linux distributions. Signed-off-by: Ferdinand Thiessen <rpm@fthiessen.de> Acked-by: Bruce Richardson <bruce.richardson@intel.com> Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>
104 lines
3.5 KiB
Meson
104 lines
3.5 KiB
Meson
# SPDX-License-Identifier: BSD-3-Clause
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# Copyright(c) 2018 Intel Corporation
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subdirs = ['kni']
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kernel_build_dir = get_option('kernel_dir')
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kernel_source_dir = get_option('kernel_dir')
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kernel_install_dir = ''
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install = not meson.is_cross_build()
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cross_args = []
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if not meson.is_cross_build()
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# native build
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kernel_version = run_command('uname', '-r', check: true).stdout().strip()
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if kernel_source_dir != ''
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# Try kernel release from sources first
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r = run_command('make', '-s', '-C', kernel_source_dir, 'kernelrelease', check: false)
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if r.returncode() == 0
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kernel_version = r.stdout().strip()
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endif
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else
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# use default path for native builds
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kernel_source_dir = '/lib/modules/' + kernel_version + '/source'
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endif
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kernel_install_dir = '/lib/modules/' + kernel_version + '/extra/dpdk'
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if kernel_build_dir == ''
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# use default path for native builds
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kernel_build_dir = '/lib/modules/' + kernel_version + '/build'
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endif
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# test running make in kernel directory, using "make kernelversion"
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make_returncode = run_command('make', '-sC', kernel_build_dir,
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'kernelversion', check: true).returncode()
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if make_returncode != 0
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# backward compatibility:
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# the headers could still be in the 'build' subdir
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if not kernel_build_dir.endswith('build') and not kernel_build_dir.endswith('build/')
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kernel_build_dir = join_paths(kernel_build_dir, 'build')
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make_returncode = run_command('make', '-sC', kernel_build_dir,
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'kernelversion', check: true).returncode()
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endif
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endif
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if make_returncode != 0
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error('Cannot compile kernel modules as requested - are kernel headers installed?')
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endif
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# DO ACTUAL MODULE BUILDING
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foreach d:subdirs
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subdir(d)
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endforeach
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subdir_done()
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endif
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# cross build
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# if we are cross-compiling we need kernel_build_dir specified
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if kernel_build_dir == ''
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error('Need "kernel_dir" option for kmod compilation when cross-compiling')
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endif
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cross_compiler = find_program('c').path()
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if cross_compiler.endswith('gcc')
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cross_prefix = run_command([py3, '-c', 'print("' + cross_compiler + '"[:-3])'],
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check: true).stdout().strip()
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elif cross_compiler.endswith('clang')
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cross_prefix = ''
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found_target = false
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# search for '-target' and use the arg that follows
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# (i.e. the value of '-target') as cross_prefix
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foreach cross_c_arg : meson.get_cross_property('c_args')
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if found_target and cross_prefix == ''
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cross_prefix = cross_c_arg
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endif
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if cross_c_arg == '-target'
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found_target = true
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endif
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endforeach
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if cross_prefix == ''
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error('Did not find -target and its value in c_args in input cross-file.')
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endif
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linker = 'lld'
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foreach cross_c_link_arg : meson.get_cross_property('c_link_args')
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if cross_c_link_arg.startswith('-fuse-ld')
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linker = cross_c_link_arg.split('=')[1]
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endif
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endforeach
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cross_args += ['CC=@0@'.format(cross_compiler), 'LD=ld.@0@'.format(linker)]
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else
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error('Unsupported cross compiler: @0@'.format(cross_compiler))
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endif
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cross_arch = host_machine.cpu_family()
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if host_machine.cpu_family() == 'aarch64'
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cross_arch = 'arm64'
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endif
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cross_args += ['ARCH=@0@'.format(cross_arch),
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'CROSS_COMPILE=@0@'.format(cross_prefix)]
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# DO ACTUAL MODULE BUILDING
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foreach d:subdirs
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subdir(d)
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endforeach
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