import sys
import os
+import re
-from os.path import isdir, join as joinpath
+from os.path import isdir, isfile, join as joinpath
import SCons
# Python < 2.4.
import subprocess
-# Ironically, SCons 0.96 dies if you give EnsureSconsVersion a
-# 3-element version number.
-min_scons_version = (0,96,91)
-try:
- EnsureSConsVersion(*min_scons_version)
-except:
- print "Error checking current SCons version."
- print "SCons", ".".join(map(str,min_scons_version)), "or greater required."
- Exit(2)
+# helper function: compare arrays or strings of version numbers.
+# E.g., compare_version((1,3,25), (1,4,1)')
+# returns -1, 0, 1 if v1 is <, ==, > v2
+def compare_versions(v1, v2):
+ def make_version_list(v):
+ if isinstance(v, (list,tuple)):
+ return v
+ elif isinstance(v, str):
+ return map(lambda x: int(re.match('\d+', x).group()), v.split('.'))
+ else:
+ raise TypeError
+
+ v1 = make_version_list(v1)
+ v2 = make_version_list(v2)
+ # Compare corresponding elements of lists
+ for n1,n2 in zip(v1, v2):
+ if n1 < n2: return -1
+ if n1 > n2: return 1
+ # all corresponding values are equal... see if one has extra values
+ if len(v1) < len(v2): return -1
+ if len(v1) > len(v2): return 1
+ return 0
+
+# SCons version numbers need special processing because they can have
+# charecters and an release date embedded in them. This function does
+# the magic to extract them in a similar way to the SCons internal function
+# function does and then checks that the current version is not contained in
+# a list of version tuples (bad_ver_strs)
+def CheckSCons(bad_ver_strs):
+ def scons_ver(v):
+ num_parts = v.split(' ')[0].split('.')
+ major = int(num_parts[0])
+ minor = int(re.match('\d+', num_parts[1]).group())
+ rev = 0
+ rdate = 0
+ if len(num_parts) > 2:
+ try: rev = int(re.match('\d+', num_parts[2]).group())
+ except: pass
+ rev_parts = num_parts[2].split('d')
+ if len(rev_parts) > 1:
+ rdate = int(re.match('\d+', rev_parts[1]).group())
+
+ return (major, minor, rev, rdate)
+
+ sc_ver = scons_ver(SCons.__version__)
+ for bad_ver in bad_ver_strs:
+ bv = (scons_ver(bad_ver[0]), scons_ver(bad_ver[1]))
+ if compare_versions(sc_ver, bv[0]) != -1 and\
+ compare_versions(sc_ver, bv[1]) != 1:
+ print "The version of SCons that you have installed: ", SCons.__version__
+ print "has a bug that prevents it from working correctly with M5."
+ print "Please install a version NOT contained within the following",
+ print "ranges (inclusive):"
+ for bad_ver in bad_ver_strs:
+ print " %s - %s" % bad_ver
+ Exit(2)
+
+CheckSCons((
+ # We need a version that is 0.96.91 or newer
+ ('0.0.0', '0.96.90'),
+ ))
# The absolute path to the current directory (where this file lives).
return i
raise ValueError, "element not found"
-# helper function: compare dotted version numbers.
-# E.g., compare_version('1.3.25', '1.4.1')
-# returns -1, 0, 1 if v1 is <, ==, > v2
-def compare_versions(v1, v2):
- # Convert dotted strings to lists
- v1 = map(int, v1.split('.'))
- v2 = map(int, v2.split('.'))
- # Compare corresponding elements of lists
- for n1,n2 in zip(v1, v2):
- if n1 < n2: return -1
- if n1 > n2: return 1
- # all corresponding values are equal... see if one has extra values
- if len(v1) < len(v2): return -1
- if len(v1) > len(v2): return 1
- return 0
-
# Each target must have 'build' in the interior of the path; the
# directory below this will determine the build parameters. For
# example, for target 'foo/bar/build/ALPHA_SE/arch/alpha/blah.do' we
if build_path not in build_paths:
build_paths.append(build_path)
+# Make sure build_root exists (might not if this is the first build there)
+if not isdir(build_root):
+ os.mkdir(build_root)
+
###################################################
#
# Set up the default build environment. This environment is copied
ROOT = ROOT,
SRCDIR = SRCDIR)
-#Parse CC/CXX early so that we use the correct compiler for
-# to test for dependencies/versions/libraries/includes
-if ARGUMENTS.get('CC', None):
- env['CC'] = ARGUMENTS.get('CC')
-
-if ARGUMENTS.get('CXX', None):
- env['CXX'] = ARGUMENTS.get('CXX')
-
Export('env')
env.SConsignFile(joinpath(build_root,"sconsign"))
if False:
env.TargetSignatures('content')
+#
+# Set up global sticky options... these are common to an entire build
+# tree (not specific to a particular build like ALPHA_SE)
+#
+
+# Option validators & converters for global sticky options
+def PathListMakeAbsolute(val):
+ if not val:
+ return val
+ f = lambda p: os.path.abspath(os.path.expanduser(p))
+ return ':'.join(map(f, val.split(':')))
+
+def PathListAllExist(key, val, env):
+ if not val:
+ return
+ paths = val.split(':')
+ for path in paths:
+ if not isdir(path):
+ raise SCons.Errors.UserError("Path does not exist: '%s'" % path)
+
+global_sticky_opts_file = joinpath(build_root, 'options.global')
+
+global_sticky_opts = Options(global_sticky_opts_file, args=ARGUMENTS)
+
+global_sticky_opts.AddOptions(
+ ('CC', 'C compiler', os.environ.get('CC', env['CC'])),
+ ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])),
+ ('BATCH', 'Use batch pool for build and tests', False),
+ ('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
+ ('EXTRAS', 'Add Extra directories to the compilation', '',
+ PathListAllExist, PathListMakeAbsolute)
+ )
+
+
+# base help text
+help_text = '''
+Usage: scons [scons options] [build options] [target(s)]
+
+'''
+
+help_text += "Global sticky options:\n" \
+ + global_sticky_opts.GenerateHelpText(env)
+
+# Update env with values from ARGUMENTS & file global_sticky_opts_file
+global_sticky_opts.Update(env)
+
+# Save sticky option settings back to current options file
+global_sticky_opts.Save(global_sticky_opts_file, env)
+
+# Parse EXTRAS option to build list of all directories where we're
+# look for sources etc. This list is exported as base_dir_list.
+base_dir_list = [joinpath(ROOT, 'src')]
+if env['EXTRAS']:
+ base_dir_list += env['EXTRAS'].split(':')
+
+Export('base_dir_list')
+
# M5_PLY is used by isa_parser.py to find the PLY package.
env.Append(ENV = { 'M5_PLY' : str(Dir('ext/ply')) })
-env['GCC'] = False
-env['SUNCC'] = False
-env['ICC'] = False
env['GCC'] = subprocess.Popen(env['CXX'] + ' --version', shell=True,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
- close_fds=True).communicate()[0].find('GCC') >= 0
+ close_fds=True).communicate()[0].find('g++') >= 0
env['SUNCC'] = subprocess.Popen(env['CXX'] + ' -V', shell=True,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True).communicate()[0].find('Sun C++') >= 0
env.Append(CCFLAGS='-pipe')
env.Append(CCFLAGS='-fno-strict-aliasing')
env.Append(CCFLAGS=Split('-Wall -Wno-sign-compare -Werror -Wundef'))
+ env.Append(CXXFLAGS='-Wno-deprecated')
elif env['ICC']:
pass #Fix me... add warning flags once we clean up icc warnings
elif env['SUNCC']:
print ' Please fix SConstruct and src/SConscript and try again.'
Exit(1)
+# Do this after we save setting back, or else we'll tack on an
+# extra 'qdo' every time we run scons.
+if env['BATCH']:
+ env['CC'] = env['BATCH_CMD'] + ' ' + env['CC']
+ env['CXX'] = env['BATCH_CMD'] + ' ' + env['CXX']
+
if sys.platform == 'cygwin':
# cygwin has some header file issues...
env.Append(CCFLAGS=Split("-Wno-uninitialized"))
# replace the scanners list that has what we want
env['SCANNERS'] = scanners
+# Add a custom Check function to the Configure context so that we can
+# figure out if the compiler adds leading underscores to global
+# variables. This is needed for the autogenerated asm files that we
+# use for embedding the python code.
+def CheckLeading(context):
+ context.Message("Checking for leading underscore in global variables...")
+ # 1) Define a global variable called x from asm so the C compiler
+ # won't change the symbol at all.
+ # 2) Declare that variable.
+ # 3) Use the variable
+ #
+ # If the compiler prepends an underscore, this will successfully
+ # link because the external symbol 'x' will be called '_x' which
+ # was defined by the asm statement. If the compiler does not
+ # prepend an underscore, this will not successfully link because
+ # '_x' will have been defined by assembly, while the C portion of
+ # the code will be trying to use 'x'
+ ret = context.TryLink('''
+ asm(".globl _x; _x: .byte 0");
+ extern int x;
+ int main() { return x; }
+ ''', extension=".c")
+ context.env.Append(LEADING_UNDERSCORE=ret)
+ context.Result(ret)
+ return ret
+
# Platform-specific configuration. Note again that we assume that all
# builds under a given build root run on the same host platform.
conf = Configure(env,
conf_dir = joinpath(build_root, '.scons_config'),
- log_file = joinpath(build_root, 'scons_config.log'))
+ log_file = joinpath(build_root, 'scons_config.log'),
+ custom_tests = { 'CheckLeading' : CheckLeading })
+
+# Check for leading underscores. Don't really need to worry either
+# way so don't need to check the return code.
+conf.CheckLeading()
# Check if we should compile a 64 bit binary on Mac OS X/Darwin
try:
# Walk the tree and execute all SConsopts scripts that wil add to the
# above options
-for root, dirs, files in os.walk('.'):
- if 'SConsopts' in files:
- SConscript(os.path.join(root, 'SConsopts'))
+for base_dir in base_dir_list:
+ for root, dirs, files in os.walk(base_dir):
+ if 'SConsopts' in files:
+ print "Reading", joinpath(root, 'SConsopts')
+ SConscript(joinpath(root, 'SConsopts'))
all_isa_list.sort()
all_cpu_list.sort()
default_cpus.sort()
-def PathListMakeAbsolute(val):
- if not val:
- return val
- f = lambda p: os.path.abspath(os.path.expanduser(p))
- return ':'.join(map(f, val.split(':')))
-
-def PathListAllExist(key, val, env):
- if not val:
- return
- paths = val.split(':')
- for path in paths:
- if not isdir(path):
- raise SCons.Errors.UserError("Path does not exist: '%s'" % path)
-
sticky_opts.AddOptions(
EnumOption('TARGET_ISA', 'Target ISA', 'alpha', all_isa_list),
BoolOption('FULL_SYSTEM', 'Full-system support', False),
# scons 0.96.90 or later.
ListOption('CPU_MODELS', 'CPU models', default_cpus, all_cpu_list),
BoolOption('NO_FAST_ALLOC', 'Disable fast object allocator', False),
+ BoolOption('FAST_ALLOC_DEBUG', 'Enable fast object allocator debugging',
+ False),
+ BoolOption('FAST_ALLOC_STATS', 'Enable fast object allocator statistics',
+ False),
BoolOption('EFENCE', 'Link with Electric Fence malloc debugger',
False),
BoolOption('SS_COMPATIBLE_FP',
BoolOption('USE_MYSQL', 'Use MySQL for stats output', have_mysql),
BoolOption('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv),
BoolOption('USE_CHECKER', 'Use checker for detailed CPU models', False),
- ('CC', 'C compiler', os.environ.get('CC', env['CC'])),
- ('CXX', 'C++ compiler', os.environ.get('CXX', env['CXX'])),
- BoolOption('BATCH', 'Use batch pool for build and tests', False),
- ('BATCH_CMD', 'Batch pool submission command name', 'qdo'),
- ('PYTHONHOME',
- 'Override the default PYTHONHOME for this system (use with caution)',
- '%s:%s' % (sys.prefix, sys.exec_prefix)),
- ('EXTRAS', 'Add Extra directories to the compilation', '',
- PathListAllExist, PathListMakeAbsolute)
)
nonsticky_opts.AddOptions(
# These options get exported to #defines in config/*.hh (see src/SConscript).
env.ExportOptions = ['FULL_SYSTEM', 'ALPHA_TLASER', 'USE_FENV', \
- 'USE_MYSQL', 'NO_FAST_ALLOC', 'SS_COMPATIBLE_FP', \
- 'USE_CHECKER', 'PYTHONHOME', 'TARGET_ISA']
+ 'USE_MYSQL', 'NO_FAST_ALLOC', 'FAST_ALLOC_DEBUG', \
+ 'FAST_ALLOC_STATS', 'SS_COMPATIBLE_FP', \
+ 'USE_CHECKER', 'TARGET_ISA']
# Define a handy 'no-op' action
def no_action(target, source, env):
env.Append(BUILDERS = { 'Concat' : concat_builder })
-# base help text
-help_text = '''
-Usage: scons [scons options] [build options] [target(s)]
-
-'''
-
# libelf build is shared across all configs in the build root.
env.SConscript('ext/libelf/SConscript',
build_dir = joinpath(build_root, 'libelf'),
for build_path in build_paths:
print "Building in", build_path
+
+ # Make a copy of the build-root environment to use for this config.
+ env = base_env.Copy()
env['BUILDDIR'] = build_path
# build_dir is the tail component of build path, and is used to
# determine the build parameters (e.g., 'ALPHA_SE')
(build_root, build_dir) = os.path.split(build_path)
- # Make a copy of the build-root environment to use for this config.
- env = base_env.Copy()
# Set env options according to the build directory config.
sticky_opts.files = []
# $BUILD_ROOT/options/$BUILD_DIR so you can nuke
# $BUILD_ROOT/$BUILD_DIR without losing your options settings.
current_opts_file = joinpath(build_root, 'options', build_dir)
- if os.path.isfile(current_opts_file):
+ if isfile(current_opts_file):
sticky_opts.files.append(current_opts_file)
print "Using saved options file %s" % current_opts_file
else:
# Make sure the directory is there so we can create it later
opt_dir = os.path.dirname(current_opts_file)
- if not os.path.isdir(opt_dir):
+ if not isdir(opt_dir):
os.mkdir(opt_dir)
# Get default build options from source tree. Options are
# overriden by 'default=' arg on command line.
default_opts_file = joinpath('build_opts',
ARGUMENTS.get('default', build_dir))
- if os.path.isfile(default_opts_file):
+ if isfile(default_opts_file):
sticky_opts.files.append(default_opts_file)
print "Options file %s not found,\n using defaults in %s" \
% (current_opts_file, default_opts_file)
sticky_opts.Update(env)
nonsticky_opts.Update(env)
- help_text += "Sticky options for %s:\n" % build_dir \
+ help_text += "\nSticky options for %s:\n" % build_dir \
+ sticky_opts.GenerateHelpText(env) \
+ "\nNon-sticky options for %s:\n" % build_dir \
+ nonsticky_opts.GenerateHelpText(env)
# Save sticky option settings back to current options file
sticky_opts.Save(current_opts_file, env)
- # Do this after we save setting back, or else we'll tack on an
- # extra 'qdo' every time we run scons.
- if env['BATCH']:
- env['CC'] = env['BATCH_CMD'] + ' ' + env['CC']
- env['CXX'] = env['BATCH_CMD'] + ' ' + env['CXX']
-
if env['USE_SSE2']:
env.Append(CCFLAGS='-msse2')
projects / gem5.git / blobdiff