# -*- mode:python -*-
-# Copyright (c) 2013 ARM Limited
+# Copyright (c) 2013, 2015 ARM Limited
# All rights reserved.
#
# The license below extends only to copyright in the software and shall
help="Add color to abbreviated scons output")
AddLocalOption('--no-colors', dest='use_colors', action='store_false',
help="Don't add color to abbreviated scons output")
+AddLocalOption('--with-cxx-config', dest='with_cxx_config',
+ action='store_true',
+ help="Build with support for C++-based configuration")
AddLocalOption('--default', dest='default', type='string', action='store',
help='Override which build_opts file to use for defaults')
AddLocalOption('--ignore-style', dest='ignore_style', action='store_true',
help='Update test reference outputs')
AddLocalOption('--verbose', dest='verbose', action='store_true',
help='Print full tool command lines')
+AddLocalOption('--without-python', dest='without_python',
+ action='store_true',
+ help='Build without Python configuration support')
+AddLocalOption('--without-tcmalloc', dest='without_tcmalloc',
+ action='store_true',
+ help='Disable linking against tcmalloc')
+AddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true',
+ help='Build with Undefined Behavior Sanitizer if available')
termcap = get_termcap(GetOption('use_colors'))
'PYTHONPATH', 'RANLIB', 'SWIG', 'TERM' ])
use_prefixes = [
- "M5", # M5 configuration (e.g., path to kernels)
- "DISTCC_", # distcc (distributed compiler wrapper) configuration
- "CCACHE_", # ccache (caching compiler wrapper) configuration
- "CCC_", # clang static analyzer configuration
+ "CCACHE_", # ccache (caching compiler wrapper) configuration
+ "CCC_", # clang static analyzer configuration
+ "DISTCC_", # distcc (distributed compiler wrapper) configuration
+ "INCLUDE_SERVER_", # distcc pump server settings
+ "M5", # M5 configuration (e.g., path to kernels)
]
use_env = {}
-for key,val in os.environ.iteritems():
+for key,val in sorted(os.environ.iteritems()):
if key in use_vars or \
any([key.startswith(prefix) for prefix in use_prefixes]):
use_env[key] = val
-main = Environment(ENV=use_env)
+# Tell scons to avoid implicit command dependencies to avoid issues
+# with the param wrappes being compiled twice (see
+# http://scons.tigris.org/issues/show_bug.cgi?id=2811)
+main = Environment(ENV=use_env, IMPLICIT_COMMAND_DEPENDENCIES=0)
main.Decider('MD5-timestamp')
main.root = Dir(".") # The current directory (where this file lives).
main.srcdir = Dir("src") # The source directory
# Enable -Wall and then disable the few warnings that we
# consistently violate
main.Append(CCFLAGS=['-Wall', '-Wno-sign-compare', '-Wundef'])
- # We always compile using C++11, but only gcc >= 4.7 and clang 3.1
- # actually use that name, so we stick with c++0x
- main.Append(CXXFLAGS=['-std=c++0x'])
+ # We always compile using C++11
+ main.Append(CXXFLAGS=['-std=c++11'])
# Add selected sanity checks from -Wextra
main.Append(CXXFLAGS=['-Wmissing-field-initializers',
'-Woverloaded-virtual'])
Exit(1)
if main['GCC']:
- # Check for a supported version of gcc. >= 4.6 is chosen for its
+ # Check for a supported version of gcc. >= 4.7 is chosen for its
# level of c++11 support. See
- # http://gcc.gnu.org/projects/cxx0x.html for details. 4.6 is also
- # the first version with proper LTO support.
+ # http://gcc.gnu.org/projects/cxx0x.html for details.
gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False)
- if compareVersions(gcc_version, "4.6") < 0:
- print 'Error: gcc version 4.6 or newer required.'
+ if compareVersions(gcc_version, "4.7") < 0:
+ print 'Error: gcc version 4.7 or newer required.'
print ' Installed version:', gcc_version
Exit(1)
# assemblers detect this as an error, "Error: expecting string
# instruction after `rep'"
if compareVersions(gcc_version, "4.8") > 0:
- as_version = readCommand([main['AS'], '-v', '/dev/null'],
- exception=False).split()
+ as_version_raw = readCommand([main['AS'], '-v', '/dev/null'],
+ exception=False).split()
- if not as_version or compareVersions(as_version[-1], "2.23") < 0:
+ # version strings may contain extra distro-specific
+ # qualifiers, so play it safe and keep only what comes before
+ # the first hyphen
+ as_version = as_version_raw[-1].split('-')[0] if as_version_raw \
+ else None
+
+ if not as_version or compareVersions(as_version, "2.23") < 0:
print termcap.Yellow + termcap.Bold + \
'Warning: This combination of gcc and binutils have' + \
' known incompatibilities.\n' + \
'binutils to 2.23.' + \
termcap.Normal
+ # Make sure we warn if the user has requested to compile with the
+ # Undefined Benahvior Sanitizer and this version of gcc does not
+ # support it.
+ if GetOption('with_ubsan') and \
+ compareVersions(gcc_version, '4.9') < 0:
+ print termcap.Yellow + termcap.Bold + \
+ 'Warning: UBSan is only supported using gcc 4.9 and later.' + \
+ termcap.Normal
+
# Add the appropriate Link-Time Optimization (LTO) flags
# unless LTO is explicitly turned off. Note that these flags
# are only used by the fast target.
if not GetOption('no_lto'):
# Pass the LTO flag when compiling to produce GIMPLE
# output, we merely create the flags here and only append
- # them later/
+ # them later
main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')]
# Use the same amount of jobs for LTO as we are running
- # scons with, we hardcode the use of the linker plugin
- # which requires either gold or GNU ld >= 2.21
- main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs'),
- '-fuse-linker-plugin']
+ # scons with
+ main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')]
main.Append(TCMALLOC_CCFLAGS=['-fno-builtin-malloc', '-fno-builtin-calloc',
'-fno-builtin-realloc', '-fno-builtin-free'])
elif main['CLANG']:
- # Check for a supported version of clang, >= 3.0 is needed to
- # support similar features as gcc 4.6. See
+ # Check for a supported version of clang, >= 3.1 is needed to
+ # support similar features as gcc 4.7. See
# http://clang.llvm.org/cxx_status.html for details
clang_version_re = re.compile(".* version (\d+\.\d+)")
clang_version_match = clang_version_re.search(CXX_version)
if (clang_version_match):
clang_version = clang_version_match.groups()[0]
- if compareVersions(clang_version, "3.0") < 0:
- print 'Error: clang version 3.0 or newer required.'
+ if compareVersions(clang_version, "3.1") < 0:
+ print 'Error: clang version 3.1 or newer required.'
print ' Installed version:', clang_version
Exit(1)
else:
print ' Installed version:', swig_version[2]
Exit(1)
+# Check for known incompatibilities. The standard library shipped with
+# gcc >= 4.9 does not play well with swig versions prior to 3.0
+if main['GCC'] and compareVersions(gcc_version, '4.9') >= 0 and \
+ compareVersions(swig_version[2], '3.0') < 0:
+ print termcap.Yellow + termcap.Bold + \
+ 'Warning: This combination of gcc and swig have' + \
+ ' known incompatibilities.\n' + \
+ ' If you encounter build problems, please update ' + \
+ 'swig to 3.0 or later.' + \
+ termcap.Normal
+
# Set up SWIG flags & scanner
swig_flags=Split('-c++ -python -modern -templatereduce $_CPPINCFLAGS')
main.Append(SWIGFLAGS=swig_flags)
-# Check for 'timeout' from GNU coreutils. If present, regressions
-# will be run with a time limit.
-TIMEOUT_version = readCommand(['timeout', '--version'], exception=False)
-main['TIMEOUT'] = TIMEOUT_version and TIMEOUT_version.find('timeout') == 0
+# Check for 'timeout' from GNU coreutils. If present, regressions will
+# be run with a time limit. We require version 8.13 since we rely on
+# support for the '--foreground' option.
+timeout_lines = readCommand(['timeout', '--version'],
+ exception='').splitlines()
+# Get the first line and tokenize it
+timeout_version = timeout_lines[0].split() if timeout_lines else []
+main['TIMEOUT'] = timeout_version and \
+ compareVersions(timeout_version[-1], '8.13') >= 0
# filter out all existing swig scanners, they mess up the dependency
# stuff for some reason
# replace the scanners list that has what we want
main['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
-
# Add a custom Check function to test for structure members.
def CheckMember(context, include, decl, member, include_quotes="<>"):
context.Message("Checking for member %s in %s..." %
conf_dir = joinpath(build_root, '.scons_config'),
log_file = joinpath(build_root, 'scons_config.log'),
custom_tests = {
- 'CheckLeading' : CheckLeading,
'CheckMember' : CheckMember,
})
-# 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:
import platform
print 'Using build cache located at', main['M5_BUILD_CACHE']
CacheDir(main['M5_BUILD_CACHE'])
-# Find Python include and library directories for embedding the
-# interpreter. We rely on python-config to resolve the appropriate
-# includes and linker flags. ParseConfig does not seem to understand
-# the more exotic linker flags such as -Xlinker and -export-dynamic so
-# we add them explicitly below. If you want to link in an alternate
-# version of python, see above for instructions on how to invoke
-# scons with the appropriate PATH set.
-#
-# First we check if python2-config exists, else we use python-config
-python_config = readCommand(['which', 'python2-config'], exception='').strip()
-if not os.path.exists(python_config):
- python_config = readCommand(['which', 'python-config'],
+if not GetOption('without_python'):
+ # Find Python include and library directories for embedding the
+ # interpreter. We rely on python-config to resolve the appropriate
+ # includes and linker flags. ParseConfig does not seem to understand
+ # the more exotic linker flags such as -Xlinker and -export-dynamic so
+ # we add them explicitly below. If you want to link in an alternate
+ # version of python, see above for instructions on how to invoke
+ # scons with the appropriate PATH set.
+ #
+ # First we check if python2-config exists, else we use python-config
+ python_config = readCommand(['which', 'python2-config'],
exception='').strip()
-py_includes = readCommand([python_config, '--includes'],
- exception='').split()
-# Strip the -I from the include folders before adding them to the
-# CPPPATH
-main.Append(CPPPATH=map(lambda inc: inc[2:], py_includes))
-
-# Read the linker flags and split them into libraries and other link
-# flags. The libraries are added later through the call the CheckLib.
-py_ld_flags = readCommand([python_config, '--ldflags'], exception='').split()
-py_libs = []
-for lib in py_ld_flags:
- if not lib.startswith('-l'):
- main.Append(LINKFLAGS=[lib])
- else:
- lib = lib[2:]
- if lib not in py_libs:
- py_libs.append(lib)
-
-# verify that this stuff works
-if not conf.CheckHeader('Python.h', '<>'):
- print "Error: can't find Python.h header in", py_includes
- print "Install Python headers (package python-dev on Ubuntu and RedHat)"
- Exit(1)
-
-for lib in py_libs:
- if not conf.CheckLib(lib):
- print "Error: can't find library %s required by python" % lib
+ if not os.path.exists(python_config):
+ python_config = readCommand(['which', 'python-config'],
+ exception='').strip()
+ py_includes = readCommand([python_config, '--includes'],
+ exception='').split()
+ # Strip the -I from the include folders before adding them to the
+ # CPPPATH
+ main.Append(CPPPATH=map(lambda inc: inc[2:], py_includes))
+
+ # Read the linker flags and split them into libraries and other link
+ # flags. The libraries are added later through the call the CheckLib.
+ py_ld_flags = readCommand([python_config, '--ldflags'],
+ exception='').split()
+ py_libs = []
+ for lib in py_ld_flags:
+ if not lib.startswith('-l'):
+ main.Append(LINKFLAGS=[lib])
+ else:
+ lib = lib[2:]
+ if lib not in py_libs:
+ py_libs.append(lib)
+
+ # verify that this stuff works
+ if not conf.CheckHeader('Python.h', '<>'):
+ print "Error: can't find Python.h header in", py_includes
+ print "Install Python headers (package python-dev on Ubuntu and RedHat)"
Exit(1)
+ for lib in py_libs:
+ if not conf.CheckLib(lib):
+ print "Error: can't find library %s required by python" % lib
+ Exit(1)
+
# On Solaris you need to use libsocket for socket ops
if not conf.CheckLibWithHeader(None, 'sys/socket.h', 'C++', 'accept(0,0,0);'):
if not conf.CheckLibWithHeader('socket', 'sys/socket.h', 'C++', 'accept(0,0,0);'):
conf.CheckLibWithHeader([None, 'rt'], [ 'time.h', 'signal.h' ], 'C',
'timer_create(CLOCK_MONOTONIC, NULL, NULL);')
-if conf.CheckLib('tcmalloc'):
- main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS'])
-elif conf.CheckLib('tcmalloc_minimal'):
- main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS'])
-else:
+if not GetOption('without_tcmalloc'):
+ if conf.CheckLib('tcmalloc'):
+ main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS'])
+ elif conf.CheckLib('tcmalloc_minimal'):
+ main.Append(CCFLAGS=main['TCMALLOC_CCFLAGS'])
+ else:
+ print termcap.Yellow + termcap.Bold + \
+ "You can get a 12% performance improvement by "\
+ "installing tcmalloc (libgoogle-perftools-dev package "\
+ "on Ubuntu or RedHat)." + termcap.Normal
+
+
+# Detect back trace implementations. The last implementation in the
+# list will be used by default.
+backtrace_impls = [ "none" ]
+
+if conf.CheckLibWithHeader(None, 'execinfo.h', 'C',
+ 'backtrace_symbols_fd((void*)0, 0, 0);'):
+ backtrace_impls.append("glibc")
+
+if backtrace_impls[-1] == "none":
+ default_backtrace_impl = "none"
print termcap.Yellow + termcap.Bold + \
- "You can get a 12% performance improvement by installing tcmalloc "\
- "(libgoogle-perftools-dev package on Ubuntu or RedHat)." + \
- termcap.Normal
+ "No suitable back trace implementation found." + \
+ termcap.Normal
if not have_posix_clock:
print "Can't find library for POSIX clocks."
# we rely on exists since version 2.6.36 of the kernel, but somehow
# the KVM_API_VERSION does not reflect the change. We test for one of
# the types as a fall back.
-have_kvm = conf.CheckHeader('linux/kvm.h', '<>') and \
- conf.CheckTypeSize('struct kvm_xsave', '#include <linux/kvm.h>') != 0
+have_kvm = conf.CheckHeader('linux/kvm.h', '<>')
if not have_kvm:
print "Info: Compatible header file <linux/kvm.h> not found, " \
"disabling KVM support."
+# x86 needs support for xsave. We test for the structure here since we
+# won't be able to run new tests by the time we know which ISA we're
+# targeting.
+have_kvm_xsave = conf.CheckTypeSize('struct kvm_xsave',
+ '#include <linux/kvm.h>') != 0
+
# Check if the requested target ISA is compatible with the host
def is_isa_kvm_compatible(isa):
- isa_comp_table = {
- "arm" : ( "armv7l" ),
- "x86" : ( "x86_64" ),
- }
try:
import platform
host_isa = platform.machine()
print "Warning: Failed to determine host ISA."
return False
- return host_isa in isa_comp_table.get(isa, [])
+ if not have_posix_timers:
+ print "Warning: Can not enable KVM, host seems to lack support " \
+ "for POSIX timers"
+ return False
+
+ if isa == "arm":
+ return host_isa in ( "armv7l", "aarch64" )
+ elif isa == "x86":
+ if host_isa != "x86_64":
+ return False
+
+ if not have_kvm_xsave:
+ print "KVM on x86 requires xsave support in kernel headers."
+ return False
+
+ return True
+ else:
+ return False
# Check if the exclude_host attribute is available. We want this to
BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm),
EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None',
all_protocols),
+ EnumVariable('BACKTRACE_IMPL', 'Post-mortem dump implementation',
+ backtrace_impls[-1], backtrace_impls)
)
# These variables get exported to #defines in config/*.hh (see src/SConscript).
export_vars += ['USE_FENV', 'SS_COMPATIBLE_FP', 'TARGET_ISA', 'CP_ANNOTATE',
- 'USE_POSIX_CLOCK', 'PROTOCOL', 'HAVE_PROTOBUF',
+ 'USE_POSIX_CLOCK', 'USE_KVM', 'PROTOCOL', 'HAVE_PROTOBUF',
'HAVE_PERF_ATTR_EXCLUDE_HOST']
###################################################
main.SConscript('ext/libelf/SConscript',
variant_dir = joinpath(build_root, 'libelf'))
-# gzstream build is shared across all configs in the build root.
-main.SConscript('ext/gzstream/SConscript',
- variant_dir = joinpath(build_root, 'gzstream'))
+# iostream3 build is shared across all configs in the build root.
+main.SConscript('ext/iostream3/SConscript',
+ variant_dir = joinpath(build_root, 'iostream3'))
# libfdt build is shared across all configs in the build root.
main.SConscript('ext/libfdt/SConscript',
main.SConscript('ext/dramsim2/SConscript',
variant_dir = joinpath(build_root, 'dramsim2'))
+# DRAMPower build is shared across all configs in the build root.
+main.SConscript('ext/drampower/SConscript',
+ variant_dir = joinpath(build_root, 'drampower'))
+
+# nomali build is shared across all configs in the build root.
+main.SConscript('ext/nomali/SConscript',
+ variant_dir = joinpath(build_root, 'nomali'))
+
###################################################
#
# This function is used to set up a directory with switching headers
if not have_kvm:
print "Warning: Can not enable KVM, host seems to lack KVM support"
env['USE_KVM'] = False
- elif not have_posix_timers:
- print "Warning: Can not enable KVM, host seems to lack support " \
- "for POSIX timers"
- env['USE_KVM'] = False
elif not is_isa_kvm_compatible(env['TARGET_ISA']):
print "Info: KVM support disabled due to unsupported host and " \
"target ISA combination"
projects / gem5.git / blobdiff