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#
# (C) COPYRIGHT 2010-2013, 2016 ARM Limited. All rights reserved.
#
# This program is free software and is provided to you under the terms of the
# GNU General Public License version 2 as published by the Free Software
# Foundation, and any use by you of this program is subject to the terms
# of such GNU licence.
#
# A copy of the licence is included with the program, and can also be obtained
# from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
#
#
import glob
import os
import shutil
import subprocess
from SCons.Script import SCons
Import("env")
# -----------------------------------------------------------------------------
g_kernel_config = dict()
def kernel_config_enabled(sEnv, option):
"""Return true if a given kernel config option is enabled"""
global g_kernel_config
if not g_kernel_config:
config_file = os.path.join(sEnv["ENV"]["KDIR"], "include/config/auto.conf")
print "Parsing kernel config '%s'." % config_file
with open(config_file, "rt") as fp:
for line in fp.readlines():
try:
(key, val) = line.split("=")
g_kernel_config[key.strip()] = val.strip()
except ValueError:
pass
if option not in g_kernel_config:
return False
val = g_kernel_config[option]
if val == "y":
return True
return False
env.AddMethod(kernel_config_enabled, "KernelConfigEnabled")
def kernel_module_builder(env = None, target = None, source = None):
assert (len(target) == 1 and 'M' in env and 'make_args' in env and
'built_module' in env)
module_dir = str(env['M'])
cmd = ['make', '-j%d' % GetOption('num_jobs')] + env['make_args']
status = subprocess.call(cmd, cwd = module_dir, env = env['ENV'])
if status:
return status
shutil.copy2(env['built_module'], target[0].abspath)
return 0 # Success (SCons will catch any exceptions thrown by copy2).
action = SCons.Action.Action(kernel_module_builder, "[KBUILD] $TARGET")
builder = env.Builder(action = action)
env.Append(BUILDERS = {'KernelModuleBuilder': builder})
def build_kernel_module(env, target, sources, M = None, make_args = [],
built_module = None):
if not M:
M = Dir('.').srcnode().abspath
if not built_module:
built_module = os.path.basename(str(target))
built_module = os.path.join(M, built_module)
env_kern = env.Clone()
kdir = env_kern['ENV']['KDIR']
env_kern.Append(CPPPATH = [M, '#kernel/include', os.path.join(kdir, 'include')])
mod = env_kern.KernelModuleBuilder(target, sources, M = M,
make_args = make_args,
built_module = built_module)
# Kbuild implicitly #includes kconfig.h (which includes autoconf.h) when
# building kernel module source files.
env_kern.Depends(mod, os.path.join(kdir, 'include/generated/autoconf.h'))
# Built files may change depending on CONFIG_* values in auto.conf.
env_kern.Depends(mod, os.path.join(kdir, 'include/config/auto.conf'))
for f in ['Kconfig', 'Kbuild', 'Makefile*']:
env_kern.Depends(mod, glob.glob(os.path.join(M, f)))
scanner = SCons.Scanner.C.CScanner()
all_headers = set()
for src in Flatten(sources):
src = env_kern.File(src)
(base, ext) = os.path.splitext(src.abspath)
if ext == '.c':
env_kern.Clean(mod, base + '.o')
# Scan for header dependencies explicitly.
headers = scanner(src, env_kern, scanner.path_function(env_kern))
env_kern.Depends(mod, headers)
all_headers.update(headers)
env_kern.Clean(mod, os.path.join(M, 'Module.symvers'))
env_kern.Clean(mod, os.path.join(M, 'module.order'))
return mod
env.AddMethod(build_kernel_module, 'BuildKernelModule')
if Glob('base/sconscript'):
SConscript('base/sconscript')
if Glob('video/sconscript'):
SConscript('video/sconscript')
SConscript('gpu/sconscript')
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