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import os
import re
import subprocess
def subprocess_output(cmdline):
p = subprocess.Popen(cmdline.split(" "), stdout=subprocess.PIPE)
stdout, stderr = p.communicate()
return stdout.rstrip()
def read_whole_file(path):
f = open(path)
r = f.read().rstrip()
f.close()
return r
def describe_revision():
if os.path.isdir('.git'):
#
# I'd like to use Dulwich or Git-Python to do this, but
# I concluded that it's highly unlikely that people would
# have the git repo checked out, but not have git.
#
hash = subprocess_output("git rev-parse --verify HEAD")
tag = subprocess_output("git describe --abbrev=0")
revs = subprocess_output("git rev-list %s..HEAD" % (tag)).split('\n')
if len(revs) and revs[0] == '':
revs = []
n = len(revs)
return ('git', tag, n, hash)
elif os.path.isdir('.hg'):
#
# I considered using the Mercurial API directly, but the
# Mercurial wiki highly discourages it.
#
hash = subprocess_output("hg tip --template {node}")
tag = subprocess_output("hg tip --template {latesttag}")
n = int(subprocess_output("hg tip --template {latesttagdistance}"))
return ('hg', tag, n, hash)
else:
tag = read_whole_file('tools/release_ver')
n = 0
hash = 'no-hash'
return ('rel', tag, n, hash)
def generate_build_header(**kwargs):
env = kwargs['env']
targets = kwargs['target']
source = kwargs['source']
scm, tag, n, hash = describe_revision()
extra = tag.split('-')
version = map(int, extra[0].split('.'))
while len(version) < 3:
version.append(0)
if n < 1:
long = "%s" % (tag)
else:
long = "%s+%d-%s-%s" % (tag, n, scm, hash[0:8])
lines = [
"#ifndef __included_app_build_h\n",
"#define __included_app_build_h\n",
"\n",
"#define APP_VERSION_MAJOR %d\n" % version[0],
"#define APP_VERSION_MINOR %d\n" % version[1],
"#define APP_VERSION_REVISION %d\n" % version[2],
"#define APP_VERSION_BUILD %d\n" % n,
"#define APP_VERSION_TAG \"%s\"\n" % tag,
"#define APP_VERSION_LONG \"%s\"\n" % long,
"\n",
"#define APP_RESOURCE_VERSION %d,%d,%d,%d\n" % (version[0], version[1], version[2], n),
"#define APP_RESOURCE_VERSION_STRING \"%d, %d, %d, %d\"\n" % (version[0], version[1], version[2], n),
"\n",
"#endif\n"
]
for target in targets:
f = open(str(target), "wb")
f.writelines(lines)
f.close()
return 0
def generate_license_header(**kwargs):
env = kwargs['env']
targets = kwargs['target']
source = kwargs['source']
source = str(source[0])
source = open(source, 'rb')
license = source.read()
source.close()
license = re.sub('\t', r'\\t', license)
license = re.sub('\n', r'\\n', license)
license = re.sub('"', r'\\"', license)
lines = [
"#ifndef __included_app_license_h\n",
"#define __included_app_license_h\n",
"\n",
"#define APP_LICENSE \"%s\"\n" % (license),
"\n",
"#endif\n"
]
for target in targets:
f = open(str(target), 'wb')
f.writelines(lines)
f.close()
arm = Environment(ENV=os.environ)
thumb = Environment(ENV=os.environ)
debug = int(ARGUMENTS.get('debug', 0))
static = int(ARGUMENTS.get('static', 0))
cpu = ARGUMENTS.get('cpu', 'cortex-a8')
for env in [arm, thumb]:
env.Decider('MD5-timestamp')
if debug:
env.Append(CFLAGS='-O0 -ggdb')
else:
env.Append(CFLAGS='-O2')
if static:
env.Append(LINKFLAGS='-static')
# Architecture revision
env.Append(CFLAGS='-mcpu=%s' % (cpu))
env.Append(ASFLAGS='-mcpu=%s' % (cpu))
# Basic CFLAGS for correctness
env.Append(CFLAGS='-std=gnu89 -fno-strict-aliasing')
# Enable pthreads
env.Append(CFLAGS='-pthread')
env.Append(LIBS=['-lpthread'])
# Standard search path
env.Append(CFLAGS='-I.')
# Warning flags
env.Append(CFLAGS='-Wall -Wextra -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes -Wmissing-declarations -Werror=declaration-after-statement -Werror=implicit-function-declaration')
# librt is needed for clock_gettime
env.Append(LIBS=['-lrt'])
arm.Append(CFLAGS='-marm')
arm.Append(ASFLAGS='-marm')
thumb.Append(CFLAGS='-mthumb')
thumb.Append(ASFLAGS='-mthumb')
sources = [
'main.c',
'cpu-arm.S',
'kernel.c',
'util.c',
'version.c',
]
if not env.GetOption('clean'):
conf = Configure(env)
if not conf.CheckHeader('getopt.h') or not conf.CheckFunc('getopt_long'):
conf.env.Append(CFLAGS='-Igetopt')
sources.append('getopt/getopt_long.c')
env = conf.Finish()
env.Command('build.h', [Value(describe_revision())], env.Action(generate_build_header, 'Generating build.h'))
env.Command('license.h', '#COPYING', env.Action(generate_license_header, 'Generating license.h'))
for env, name in [(arm, 'arm'), (thumb, 'thumb')]:
env_sources = [ env.Object(name + '-' + x.split('.')[0] + '.o', x) for x in sources ]
env.Program(target='cpu_test-' + name, source=env_sources)
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