mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-25 11:11:35 +01:00
5711e85e70
Without this in particular, --gdb fails on assembly because main.c was not being built with -ggdb3.
271 lines
11 KiB
Python
Executable File
271 lines
11 KiB
Python
Executable File
#!/usr/bin/env python3
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import os
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import shlex
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import subprocess
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import threading
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from shell_helpers import LF
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import common
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from thread_pool import ThreadPool
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import path_properties
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class Main(common.BuildCliFunction):
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def __init__(self, *args, **kwargs):
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if not 'description' in kwargs:
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kwargs['description'] = '''\
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Build our compiled userland examples.
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'''
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super().__init__(*args, **kwargs)
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self.add_argument(
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'targets',
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default=[],
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help='''\
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Select to build only the given userland programs, or all programs under
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the given directories.
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Default: build all.
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Must point to either sources or directories under userland/, or to LKMC
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toplevel which is a synonym for userland/.
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Default: build all examples that have their package dependencies met, e.g.:
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- userland/arch/ programs only build if the target arch matches
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- an OpenBLAS example can only be built if the target root filesystem
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has the OpenBLAS libraries and headers installed, which you must inform
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with --package
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''',
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nargs='*',
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)
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self._add_argument('--ccflags')
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self._add_argument('--force-rebuild')
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self._add_argument('--optimization-level')
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def _build_one(
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self,
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in_path,
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out_path,
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build_exts=None,
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cc_flags=None,
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cc_flags_after=None,
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extra_objs_userland_asm=None,
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extra_objs_lkmc_common=None,
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extra_deps=None,
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link=True,
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):
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if cc_flags is None:
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cc_flags = []
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else:
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cc_flags = cc_flags.copy()
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if cc_flags_after is None:
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cc_flags_after = []
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else:
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cc_flags_after = cc_flags_after.copy()
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if extra_deps is None:
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extra_deps = []
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ret = 0
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in_dir, in_basename = os.path.split(in_path)
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in_dir_abs = os.path.abspath(in_dir)
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dirpath_relative_root = in_dir_abs[len(self.env['userland_source_dir']) + 1:]
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dirpath_relative_root_components = dirpath_relative_root.split(os.sep)
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dirpath_relative_root_components_len = len(dirpath_relative_root_components)
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my_path_properties = path_properties.get(os.path.join(
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self.env['userland_subdir'],
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dirpath_relative_root,
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in_basename
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))
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if my_path_properties.should_be_built(self.env, link):
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extra_objs= []
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if my_path_properties['extra_objs_lkmc_common']:
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extra_objs.extend(extra_objs_lkmc_common)
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if my_path_properties['extra_objs_userland_asm']:
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extra_objs.extend(extra_objs_userland_asm)
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if self.need_rebuild([in_path] + extra_objs + extra_deps, out_path):
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cc_flags.extend(my_path_properties['cc_flags'])
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cc_flags_after.extend(my_path_properties['cc_flags_after'])
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if my_path_properties['cc_pedantic']:
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cc_flags.extend(['-pedantic', LF])
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if not link:
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cc_flags.extend(['-c', LF])
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in_ext = os.path.splitext(in_path)[1]
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if in_ext in (self.env['c_ext'], self.env['asm_ext']):
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cc = self.env['gcc']
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std = my_path_properties['c_std']
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elif in_ext == self.env['cxx_ext']:
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cc = self.env['gxx']
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std = my_path_properties['cxx_std']
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if dirpath_relative_root_components_len > 0:
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if dirpath_relative_root_components[0] == 'arch':
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cc_flags.extend([
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'-I', os.path.join(self.env['userland_source_arch_arch_dir']), LF,
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'-I', os.path.join(self.env['userland_source_arch_dir']), LF,
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])
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elif dirpath_relative_root_components[0] == 'libs':
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if dirpath_relative_root_components_len > 1:
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if self.env['gcc_which'] == 'host':
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eigen_root = '/'
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else:
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eigen_root = self.env['buildroot_staging_dir']
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packages = {
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'eigen': {
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# TODO: was failing with:
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# fatal error: Eigen/Dense: No such file or directory as of
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# 975ce0723ee3fa1fea1766e6683e2f3acb8558d6
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# http://lists.busybox.net/pipermail/buildroot/2018-June/222914.html
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'cc_flags': [
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'-I',
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os.path.join(
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eigen_root,
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'usr',
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'include',
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'eigen3'
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),
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LF
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],
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# Header only.
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'cc_flags_after': [],
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},
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}
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package_key = dirpath_relative_root_components[1]
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if package_key in packages:
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package = packages[package_key]
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else:
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package = {}
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if 'cc_flags' in package:
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cc_flags.extend(package['cc_flags'])
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else:
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pkg_config_output = subprocess.check_output([
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self.env['pkg_config'],
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'--cflags',
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package_key
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]).decode()
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cc_flags.extend(self.sh.shlex_split(pkg_config_output))
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if 'cc_flags_after' in package:
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cc_flags.extend(package['cc_flags_after'])
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else:
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pkg_config_output = subprocess.check_output([
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self.env['pkg_config'],
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'--libs',
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package_key
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]).decode()
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cc_flags_after.extend(self.sh.shlex_split(pkg_config_output))
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os.makedirs(os.path.dirname(out_path), exist_ok=True)
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ret = self.sh.run_cmd(
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(
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[
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cc, LF,
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] +
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cc_flags +
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[
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'-std={}'.format(std), LF,
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'-o', out_path, LF,
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in_path, LF,
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] +
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self.sh.add_newlines(extra_objs) +
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cc_flags_after
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),
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extra_paths=[self.env['ccache_dir']],
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)
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return ret
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def build(self):
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build_dir = self.get_build_dir()
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cc_flags = [
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'-I', self.env['root_dir'], LF,
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'-O{}'.format(self.env['optimization_level']), LF,
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] + self.sh.shlex_split(self.env['ccflags'])
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if self.env['static']:
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cc_flags.extend(['-static', LF])
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extra_obj_lkmc_common = os.path.join(
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build_dir,
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self.env['common_basename_noext'] + self.env['obj_ext']
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)
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self._build_one(
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in_path=self.env['common_c'],
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out_path=extra_obj_lkmc_common,
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cc_flags=cc_flags,
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extra_deps=[self.env['common_h']],
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link=False,
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)
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extra_obj_userland_asm = os.path.join(
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build_dir,
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'arch',
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'main' + self.env['obj_ext']
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)
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extra_obj_userland_asm_relpath = os.path.join(
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'arch',
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'main' + self.env['c_ext']
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)
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self._build_one(
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in_path=os.path.join(
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self.env['userland_source_dir'],
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extra_obj_userland_asm_relpath
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),
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out_path=extra_obj_userland_asm,
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cc_flags=cc_flags,
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extra_deps=[self.env['common_h']],
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link=False,
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)
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with ThreadPool(
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self._build_one,
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nthreads=self.env['nproc'],
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) as thread_pool:
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try:
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for target in self.env['targets']:
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for path, in_dirnames, in_filenames in self.sh.walk(target):
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for in_filename in in_filenames:
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in_ext = os.path.splitext(in_filename)[1]
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if not in_ext in self.env['userland_in_exts']:
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continue
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in_path = os.path.join(path, in_filename)
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error = thread_pool.submit({
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'in_path': in_path,
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'out_path': self.resolve_userland_executable(in_path),
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'cc_flags': cc_flags,
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'extra_objs_lkmc_common': [extra_obj_lkmc_common],
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'extra_objs_userland_asm': [extra_obj_userland_asm],
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})
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if error is not None:
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raise common.ExitLoop()
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except common.ExitLoop:
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pass
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error = thread_pool.get_error()
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if error is not None:
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print(error)
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return 1
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if not self.env['in_tree']:
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self.sh.copy_dir_if_update(
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srcdir=build_dir,
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destdir=self.env['out_rootfs_overlay_lkmc_dir'],
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filter_ext=self.env['userland_executable_ext'],
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)
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return 0
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def clean(self):
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if self.env['in_tree']:
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for target in self.env['targets']:
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if os.path.exists(target):
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if os.path.isfile(target):
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self.sh.rmrf(self.resolve_userland_executable(target))
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else:
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for path, dirnames, filenames in self.sh.walk(target):
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for filename in filenames:
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if os.path.splitext(filename)[1] in self.env['userland_out_exts']:
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self.sh.rmrf(os.path.join(path, filename))
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else:
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for target in self.env['targets']:
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self.sh.rmrf(self.resolve_userland_executable(target))
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def get_build_dir(self):
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return self.env['userland_build_dir']
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def setup_one(self):
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self.env['targets'] = self.resolve_targets(
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self.env['userland_source_dir'],
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self.env['targets']
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)
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if __name__ == '__main__':
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Main().cli()
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