# SPDX-License-Identifier: BSD-3-Clause
# Copyright(c) 2018 Intel Corporation
-subdirs = ['igb_uio']
-
-WARN_CROSS_COMPILE='Need "kernel_dir" option for kmod compilation when cross-compiling'
-WARN_NO_HEADERS='Cannot compile kernel modules as requested - are kernel headers installed?'
-
-# if we are cross-compiling we need kernel_dir specified
-# NOTE: warning() function only available from version 0.44 onwards
-if get_option('kernel_dir') == '' and meson.is_cross_build()
- if meson.version().version_compare('>=0.44')
- warning(WARN_CROSS_COMPILE)
- else
- message('WARNING: ' + WARN_CROSS_COMPILE)
- endif
+subdirs = ['kni']
+
+kernel_build_dir = get_option('kernel_dir')
+kernel_install_dir = ''
+install = not meson.is_cross_build()
+cross_args = []
+
+if not meson.is_cross_build()
+ # native build
+ kernel_version = run_command('uname', '-r').stdout().strip()
+ kernel_install_dir = '/lib/modules/' + kernel_version + '/extra/dpdk'
+ if kernel_build_dir == ''
+ # use default path for native builds
+ kernel_build_dir = '/lib/modules/' + kernel_version + '/build'
+ endif
+
+ # test running make in kernel directory, using "make kernelversion"
+ make_returncode = run_command('make', '-sC', kernel_build_dir,
+ 'kernelversion').returncode()
+ if make_returncode != 0
+ # backward compatibility:
+ # the headers could still be in the 'build' subdir
+ if not kernel_build_dir.endswith('build') and not kernel_build_dir.endswith('build/')
+ kernel_build_dir = join_paths(kernel_build_dir, 'build')
+ make_returncode = run_command('make', '-sC', kernel_build_dir,
+ 'kernelversion').returncode()
+ endif
+ endif
+
+ if make_returncode != 0
+ error('Cannot compile kernel modules as requested - are kernel headers installed?')
+ endif
+
+ # DO ACTUAL MODULE BUILDING
+ foreach d:subdirs
+ subdir(d)
+ endforeach
+
+ subdir_done()
+endif
+
+# cross build
+# if we are cross-compiling we need kernel_build_dir specified
+if kernel_build_dir == ''
+ error('Need "kernel_dir" option for kmod compilation when cross-compiling')
+endif
+cross_compiler = find_program('c').path()
+if cross_compiler.endswith('gcc')
+ cross_prefix = run_command([py3, '-c', 'print("' + cross_compiler + '"[:-3])']).stdout().strip()
+elif cross_compiler.endswith('clang')
+ cross_prefix = ''
+ found_target = false
+ # search for '-target' and use the arg that follows
+ # (i.e. the value of '-target') as cross_prefix
+ foreach cross_c_arg : meson.get_cross_property('c_args')
+ if found_target and cross_prefix == ''
+ cross_prefix = cross_c_arg
+ endif
+ if cross_c_arg == '-target'
+ found_target = true
+ endif
+ endforeach
+ if cross_prefix == ''
+ error('Did not find -target and its value in c_args in input cross-file.')
+ endif
+ linker = 'lld'
+ foreach cross_c_link_arg : meson.get_cross_property('c_link_args')
+ if cross_c_link_arg.startswith('-fuse-ld')
+ linker = cross_c_link_arg.split('=')[1]
+ endif
+ endforeach
+ cross_args += ['CC=@0@'.format(cross_compiler), 'LD=ld.@0@'.format(linker)]
else
+ error('Unsupported cross compiler: @0@'.format(cross_compiler))
+endif
- 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'
- endif
-
- # test running make in kernel directory, using "make kernelversion"
- make_returncode = run_command('make', '-sC', kernel_dir,
- 'kernelversion').returncode()
- if make_returncode != 0
- if meson.version().version_compare('>=0.44')
- warning(WARN_NO_HEADERS)
- else
- message('WARNING: ' + WARN_NO_HEADERS)
- endif
- else # returncode == 0
+cross_arch = host_machine.cpu_family()
+if host_machine.cpu_family() == 'aarch64'
+ cross_arch = 'arm64'
+endif
+
+cross_args += ['ARCH=@0@'.format(cross_arch),
+ 'CROSS_COMPILE=@0@'.format(cross_prefix)]
# DO ACTUAL MODULE BUILDING
- foreach d:subdirs
- subdir(d)
- endforeach
- endif
-endif
+foreach d:subdirs
+ subdir(d)
+endforeach
git.droids-corp.org / dpdk.git / blobdiff