#!/usr/bin/env python import re import Options import sys, os, shutil from Utils import cmd_output from os.path import join, dirname, abspath from logging import fatal cwd = os.getcwd() APPNAME="node.js" # Use the directory that this file is found in to find the tools # directory where the js2c.py file can be found. sys.path.append(sys.argv[0] + '/tools'); import js2c srcdir = '.' blddir = 'build' supported_archs = ('arm', 'ia32', 'x64') # 'mips' supported by v8, but not node jobs=1 if os.environ.has_key('JOBS'): jobs = int(os.environ['JOBS']) def safe_path(path): return path.replace("\\", "/") def canonical_cpu_type(arch): m = {'x86': 'ia32', 'i386':'ia32', 'x86_64':'x64', 'amd64':'x64'} if arch in m: arch = m[arch] if not arch in supported_archs: raise Exception("supported architectures are "+', '.join(supported_archs)+\ " but NOT '" + arch + "'.") return arch def set_options(opt): # the gcc module provides a --debug-level option opt.tool_options('compiler_cxx') opt.tool_options('compiler_cc') opt.tool_options('misc') opt.add_option( '--debug' , action='store_true' , default=False , help='Build debug variant [Default: False]' , dest='debug' ) opt.add_option( '--profile' , action='store_true' , default=False , help='Enable profiling [Default: False]' , dest='profile' ) opt.add_option( '--efence' , action='store_true' , default=False , help='Build with -lefence for debugging [Default: False]' , dest='efence' ) opt.add_option( '--without-snapshot' , action='store_true' , default=False , help='Build without snapshotting V8 libraries. You might want to set this for cross-compiling. [Default: False]' , dest='without_snapshot' ) opt.add_option( '--without-ssl' , action='store_true' , default=False , help='Build without SSL' , dest='without_ssl' ) opt.add_option('--shared-v8' , action='store_true' , default=False , help='Link to a shared V8 DLL instead of static linking' , dest='shared_v8' ) opt.add_option( '--shared-v8-includes' , action='store' , default=False , help='Directory containing V8 header files' , dest='shared_v8_includes' ) opt.add_option( '--shared-v8-libpath' , action='store' , default=False , help='A directory to search for the shared V8 DLL' , dest='shared_v8_libpath' ) opt.add_option( '--shared-v8-libname' , action='store' , default=False , help="Alternative lib name to link to (default: 'v8')" , dest='shared_v8_libname' ) opt.add_option( '--oprofile' , action='store_true' , default=False , help="add oprofile support" , dest='use_oprofile' ) opt.add_option('--shared-cares' , action='store_true' , default=False , help='Link to a shared C-Ares DLL instead of static linking' , dest='shared_cares' ) opt.add_option( '--shared-cares-includes' , action='store' , default=False , help='Directory containing C-Ares header files' , dest='shared_cares_includes' ) opt.add_option( '--shared-cares-libpath' , action='store' , default=False , help='A directory to search for the shared C-Ares DLL' , dest='shared_cares_libpath' ) opt.add_option('--shared-libev' , action='store_true' , default=False , help='Link to a shared libev DLL instead of static linking' , dest='shared_libev' ) opt.add_option( '--shared-libev-includes' , action='store' , default=False , help='Directory containing libev header files' , dest='shared_libev_includes' ) opt.add_option( '--shared-libev-libpath' , action='store' , default=False , help='A directory to search for the shared libev DLL' , dest='shared_libev_libpath' ) opt.add_option( '--product-type' , action='store' , default='program' , help='What kind of product to produce (program, cstaticlib '\ 'or cshlib) [default: %default]' , dest='product_type' ) opt.add_option( '--dest-cpu' , action='store' , default=None , help='CPU architecture to build for. Valid values are: '+\ ', '.join(supported_archs) , dest='dest_cpu' ) def configure(conf): conf.check_tool('compiler_cxx') if not conf.env.CXX: conf.fatal('c++ compiler not found') conf.check_tool('compiler_cc') if not conf.env.CC: conf.fatal('c compiler not found') o = Options.options conf.env["USE_DEBUG"] = o.debug # Snapshot building does noet seem to work on mingw32 conf.env["SNAPSHOT_V8"] = not o.without_snapshot and not sys.platform.startswith("win32") if sys.platform.startswith("sunos"): conf.env["SNAPSHOT_V8"] = False conf.env["USE_PROFILING"] = o.profile conf.env["USE_SHARED_V8"] = o.shared_v8 or o.shared_v8_includes or o.shared_v8_libpath or o.shared_v8_libname conf.env["USE_SHARED_CARES"] = o.shared_cares or o.shared_cares_includes or o.shared_cares_libpath conf.env["USE_SHARED_LIBEV"] = o.shared_libev or o.shared_libev_includes or o.shared_libev_libpath conf.env["USE_OPROFILE"] = o.use_oprofile if o.use_oprofile: conf.check(lib=['bfd', 'opagent'], uselib_store="OPROFILE") conf.check(lib='dl', uselib_store='DL') if not sys.platform.startswith("sunos") and not sys.platform.startswith("cygwin") and not sys.platform.startswith("win32"): conf.env.append_value("CCFLAGS", "-rdynamic") conf.env.append_value("LINKFLAGS_DL", "-rdynamic") if sys.platform.startswith("freebsd") or sys.platform.startswith("openbsd"): conf.check(lib='kvm', uselib_store='KVM') #if Options.options.debug: # conf.check(lib='profiler', uselib_store='PROFILER') if Options.options.efence: conf.check(lib='efence', libpath=['/usr/lib', '/usr/local/lib'], uselib_store='EFENCE') if sys.platform.startswith("freebsd"): if not conf.check(lib="execinfo", includes=['/usr/include', '/usr/local/include'], libpath=['/usr/lib', '/usr/local/lib'], uselib_store="EXECINFO"): conf.fatal("Install the libexecinfo port from /usr/ports/devel/libexecinfo.") if not Options.options.without_ssl: if conf.check_cfg(package='openssl', args='--cflags --libs', uselib_store='OPENSSL'): Options.options.use_openssl = conf.env["USE_OPENSSL"] = True conf.env.append_value("CPPFLAGS", "-DHAVE_OPENSSL=1") else: libssl = conf.check_cc(lib=['ssl', 'crypto'], header_name='openssl/ssl.h', function_name='SSL_library_init', libpath=['/usr/lib', '/usr/local/lib', '/opt/local/lib', '/usr/sfw/lib'], uselib_store='OPENSSL') libcrypto = conf.check_cc(lib='crypto', header_name='openssl/crypto.h', uselib_store='OPENSSL') if libcrypto and libssl: conf.env["USE_OPENSSL"] = Options.options.use_openssl = True conf.env.append_value("CPPFLAGS", "-DHAVE_OPENSSL=1") else: conf.fatal("Could not autodetect OpenSSL support. " + "Make sure OpenSSL development packages are installed. " + "Use configure --without-ssl to disable this message.") else: Options.options.use_openssl = conf.env["USE_OPENSSL"] = False conf.check(lib='util', libpath=['/usr/lib', '/usr/local/lib'], uselib_store='UTIL') # normalize DEST_CPU from --dest-cpu, DEST_CPU or built-in value if Options.options.dest_cpu and Options.options.dest_cpu: conf.env['DEST_CPU'] = canonical_cpu_type(Options.options.dest_cpu) elif 'DEST_CPU' in os.environ and os.environ['DEST_CPU']: conf.env['DEST_CPU'] = canonical_cpu_type(os.environ['DEST_CPU']) elif 'DEST_CPU' in conf.env and conf.env['DEST_CPU']: conf.env['DEST_CPU'] = canonical_cpu_type(conf.env['DEST_CPU']) conf.check(lib='rt', uselib_store='RT') if sys.platform.startswith("sunos"): if not conf.check(lib='socket', uselib_store="SOCKET"): conf.fatal("Cannot find socket library") if not conf.check(lib='nsl', uselib_store="NSL"): conf.fatal("Cannot find nsl library") conf.sub_config('deps/libeio') if conf.env['USE_SHARED_V8']: v8_includes = []; if o.shared_v8_includes: v8_includes.append(o.shared_v8_includes); v8_libpath = []; if o.shared_v8_libpath: v8_libpath.append(o.shared_v8_libpath); if not o.shared_v8_libname: o.shared_v8_libname = 'v8' if not conf.check_cxx(lib=o.shared_v8_libname, header_name='v8.h', uselib_store='V8', includes=v8_includes, libpath=v8_libpath): conf.fatal("Cannot find v8") if o.debug: if not conf.check_cxx(lib=o.shared_v8_libname + '_g', header_name='v8.h', uselib_store='V8_G', includes=v8_includes, libpath=v8_libpath): conf.fatal("Cannot find v8_g") if sys.platform.startswith("win32"): # On win32 CARES is always static, so we can call internal functions like ares_inet_pton et al. # CARES_STATICLIB must be defined or gcc will try to make DLL stub calls conf.env.append_value('CPPFLAGS', '-DCARES_STATICLIB=1') conf.sub_config('deps/c-ares') elif conf.env['USE_SHARED_CARES']: cares_includes = []; if o.shared_cares_includes: cares_includes.append(o.shared_cares_includes); cares_libpath = []; if o.shared_cares_libpath: cares_libpath.append(o.shared_cares_libpath); if not conf.check_cxx(lib='cares', header_name='ares.h', uselib_store='CARES', includes=cares_includes, libpath=cares_libpath): conf.fatal("Cannot find c-ares") else: conf.sub_config('deps/c-ares') if conf.env['USE_SHARED_LIBEV']: libev_includes = []; if o.shared_libev_includes: libev_includes.append(o.shared_libev_includes); libev_libpath = []; if o.shared_libev_libpath: libev_libpath.append(o.shared_libev_libpath); if not conf.check_cxx(lib='ev', header_name='ev.h', uselib_store='EV', includes=libev_includes, libpath=libev_libpath): conf.fatal("Cannot find libev") else: conf.sub_config('deps/libev') conf.define("HAVE_CONFIG_H", 1) if sys.platform.startswith("sunos"): conf.env.append_value ('CCFLAGS', '-threads') conf.env.append_value ('CXXFLAGS', '-threads') #conf.env.append_value ('LINKFLAGS', ' -threads') elif not sys.platform.startswith("cygwin") and not sys.platform.startswith("win32"): threadflags='-pthread' conf.env.append_value ('CCFLAGS', threadflags) conf.env.append_value ('CXXFLAGS', threadflags) conf.env.append_value ('LINKFLAGS', threadflags) if sys.platform.startswith("darwin"): # used by platform_darwin_*.cc conf.env.append_value('LINKFLAGS', ['-framework','Carbon']) # cross compile for architecture specified by DEST_CPU if 'DEST_CPU' in conf.env: arch = conf.env['DEST_CPU'] # map supported_archs to GCC names: arch_mappings = {'ia32': 'i386', 'x64': 'x86_64'} if arch in arch_mappings: arch = arch_mappings[arch] flags = ['-arch', arch] conf.env.append_value('CCFLAGS', flags) conf.env.append_value('CXXFLAGS', flags) conf.env.append_value('LINKFLAGS', flags) if 'DEST_CPU' in conf.env: arch = conf.env['DEST_CPU'] # TODO: -m32 is only available on 64 bit machines, so check host type flags = None if arch == 'ia32': flags = '-m32' if flags: conf.env.append_value('CCFLAGS', flags) conf.env.append_value('CXXFLAGS', flags) conf.env.append_value('LINKFLAGS', flags) # Needed for getaddrinfo in libeio conf.env.append_value("CPPFLAGS", "-DX_STACKSIZE=%d" % (1024*64)) # LFS conf.env.append_value('CPPFLAGS', '-D_LARGEFILE_SOURCE') conf.env.append_value('CPPFLAGS', '-D_FILE_OFFSET_BITS=64') conf.env.append_value('CPPFLAGS', '-DEV_MULTIPLICITY=0') # Makes select on windows support more than 64 FDs if sys.platform.startswith("win32"): conf.env.append_value('CPPFLAGS', '-DFD_SETSIZE=1024'); ## needed for node_file.cc fdatasync ## Strangely on OSX 10.6 the g++ doesn't see fdatasync but gcc does? code = """ #include int main(void) { int fd = 0; fdatasync (fd); return 0; } """ if conf.check_cxx(msg="Checking for fdatasync(2) with c++", fragment=code): conf.env.append_value('CPPFLAGS', '-DHAVE_FDATASYNC=1') else: conf.env.append_value('CPPFLAGS', '-DHAVE_FDATASYNC=0') # platform conf.env.append_value('CPPFLAGS', '-DPLATFORM="' + conf.env['DEST_OS'] + '"') # posix? if not sys.platform.startswith('win'): conf.env.append_value('CPPFLAGS', '-D__POSIX__=1') platform_file = "src/platform_%s.cc" % conf.env['DEST_OS'] if os.path.exists(join(cwd, platform_file)): Options.options.platform_file = True conf.env["PLATFORM_FILE"] = platform_file else: Options.options.platform_file = False conf.env["PLATFORM_FILE"] = "src/platform_none.cc" if conf.env['USE_PROFILING'] == True: conf.env.append_value('CPPFLAGS', '-pg') conf.env.append_value('LINKFLAGS', '-pg') if sys.platform.startswith("win32"): conf.env.append_value('LIB', 'ws2_32') conf.env.append_value('LIB', 'winmm') conf.env.append_value('CPPFLAGS', '-Wno-unused-parameter'); conf.env.append_value('CPPFLAGS', '-D_FORTIFY_SOURCE=2'); # Split off debug variant before adding variant specific defines debug_env = conf.env.copy() conf.set_env_name('debug', debug_env) if (sys.platform.startswith("win32")): # Static pthread - crashes #conf.env.append_value('LINKFLAGS', '../deps/pthreads-w32/libpthreadGC2.a') #debug_env.append_value('LINKFLAGS', '../deps/pthreads-w32/libpthreadGC2d.a') # Pthread dll conf.env.append_value('LIB', 'pthread.dll') # Configure debug variant conf.setenv('debug') debug_env.set_variant('debug') debug_env.append_value('CPPFLAGS', '-DDEBUG') debug_compile_flags = ['-g', '-O0', '-Wall', '-Wextra'] debug_env.append_value('CCFLAGS', debug_compile_flags) debug_env.append_value('CXXFLAGS', debug_compile_flags) conf.write_config_header("config.h") # Configure default variant conf.setenv('default') conf.env.append_value('CPPFLAGS', '-DNDEBUG') default_compile_flags = ['-g', '-O3'] conf.env.append_value('CCFLAGS', default_compile_flags) conf.env.append_value('CXXFLAGS', default_compile_flags) conf.write_config_header("config.h") def v8_cmd(bld, variant): scons = join(cwd, 'tools/scons/scons.py') deps_src = join(bld.path.abspath(),"deps") v8dir_src = join(deps_src,"v8") # NOTE: We want to compile V8 to export its symbols. I.E. Do not want # -fvisibility=hidden. When using dlopen() it seems that the loaded DSO # cannot see symbols in the executable which are hidden, even if the # executable is statically linked together... # XXX Change this when v8 defaults x86_64 to native builds # Possible values are (arm, ia32, x64, mips). arch = "" if bld.env['DEST_CPU']: arch = "arch="+bld.env['DEST_CPU'] if variant == "default": mode = "release" else: mode = "debug" if bld.env["SNAPSHOT_V8"]: snapshot = "snapshot=on" else: snapshot = "" if bld.env["USE_OPROFILE"]: profile = "prof=oprofile" else: profile = "" cmd_R = sys.executable + ' "%s" -j %d -C "%s" -Y "%s" visibility=default mode=%s %s library=static %s %s' cmd = cmd_R % ( scons , Options.options.jobs , safe_path(bld.srcnode.abspath(bld.env_of_name(variant))) , safe_path(v8dir_src) , mode , arch , snapshot , profile ) if sys.platform.startswith("linux"): cmd += ' gdbjit=on ' if sys.platform.startswith("sunos"): cmd += ' toolchain=gcc' return ("echo '%s' && " % cmd) + cmd def build_v8(bld): v8 = bld.new_task_gen( source = 'deps/v8/SConstruct ' + bld.path.ant_glob('v8/include/*') + bld.path.ant_glob('v8/src/*'), target = bld.env["staticlib_PATTERN"] % "v8", rule = v8_cmd(bld, "default"), before = "cxx", install_path = None) v8.uselib = "EXECINFO" bld.env["CPPPATH_V8"] = "deps/v8/include" t = join(bld.srcnode.abspath(bld.env_of_name("default")), v8.target) bld.env_of_name('default').append_value("LINKFLAGS_V8", t) ### v8 debug if bld.env["USE_DEBUG"]: v8_debug = v8.clone("debug") v8_debug.rule = v8_cmd(bld, "debug") v8_debug.target = bld.env["staticlib_PATTERN"] % "v8_g" v8_debug.uselib = "EXECINFO" bld.env["CPPPATH_V8_G"] = "deps/v8/include" t = join(bld.srcnode.abspath(bld.env_of_name("debug")), v8_debug.target) bld.env_of_name('debug').append_value("LINKFLAGS_V8_G", t) bld.install_files('${PREFIX}/include/node/', 'deps/v8/include/*.h') def build(bld): ## This snippet is to show full commands as WAF executes import Build old = Build.BuildContext.exec_command def exec_command(self, cmd, **kw): if isinstance(cmd, list): print(" ".join(cmd)) return old(self, cmd, **kw) Build.BuildContext.exec_command = exec_command Options.options.jobs=jobs product_type = Options.options.product_type product_type_is_lib = product_type != 'program' print "DEST_OS: " + bld.env['DEST_OS'] print "DEST_CPU: " + bld.env['DEST_CPU'] print "Parallel Jobs: " + str(Options.options.jobs) print "Product type: " + product_type bld.add_subdirs('deps/libeio') if not bld.env['USE_SHARED_V8']: build_v8(bld) if not bld.env['USE_SHARED_LIBEV']: bld.add_subdirs('deps/libev') if not bld.env['USE_SHARED_CARES']: bld.add_subdirs('deps/c-ares') ### http_parser http_parser = bld.new_task_gen("cc") http_parser.source = "deps/http_parser/http_parser.c" http_parser.includes = "deps/http_parser/" http_parser.name = "http_parser" http_parser.target = "http_parser" http_parser.install_path = None if bld.env["USE_DEBUG"]: http_parser.clone("debug") ### src/native.cc def make_macros(loc, content): f = open(loc, 'w') f.write(content) f.close macros_loc_debug = join( bld.srcnode.abspath(bld.env_of_name("debug")), "macros.py" ) macros_loc_default = join( bld.srcnode.abspath(bld.env_of_name("default")), "macros.py" ) make_macros(macros_loc_debug, "") # leave debug(x) as is in debug build # replace debug(x) with nothing in release build make_macros(macros_loc_default, "macro debug(x) = ;\n") def javascript_in_c(task): env = task.env source = map(lambda x: x.srcpath(env), task.inputs) targets = map(lambda x: x.srcpath(env), task.outputs) source.append(macros_loc_default) js2c.JS2C(source, targets) def javascript_in_c_debug(task): env = task.env source = map(lambda x: x.srcpath(env), task.inputs) targets = map(lambda x: x.srcpath(env), task.outputs) source.append(macros_loc_debug) js2c.JS2C(source, targets) native_cc = bld.new_task_gen( source='src/node.js ' + bld.path.ant_glob('lib/*.js'), target="src/node_natives.h", before="cxx", install_path=None ) # Add the rule /after/ cloning the debug # This is a work around for an error had in python 2.4.3 (I'll paste the # error that was had into the git commit meessage. git-blame to find out # where.) if bld.env["USE_DEBUG"]: native_cc_debug = native_cc.clone("debug") native_cc_debug.rule = javascript_in_c_debug native_cc.rule = javascript_in_c ### node lib node = bld.new_task_gen("cxx", product_type) node.name = "node" node.target = "node" node.uselib = 'RT EV OPENSSL CARES EXECINFO DL KVM SOCKET NSL UTIL OPROFILE' node.add_objects = 'eio http_parser' if product_type_is_lib: node.install_path = '${PREFIX}/lib' else: node.install_path = '${PREFIX}/bin' node.chmod = 0755 node.source = """ src/node.cc src/node_buffer.cc src/node_javascript.cc src/node_extensions.cc src/node_http_parser.cc src/node_net.cc src/node_io_watcher.cc src/node_constants.cc src/node_cares.cc src/node_events.cc src/node_file.cc src/node_signal_watcher.cc src/node_stat_watcher.cc src/node_timer.cc src/node_script.cc src/node_os.cc """ if sys.platform.startswith("win32"): node.source += " src/node_stdio_win32.cc " node.source += " src/node_child_process_win32.cc " else: node.source += " src/node_stdio.cc " node.source += " src/node_child_process.cc " node.source += bld.env["PLATFORM_FILE"] if not product_type_is_lib: node.source = 'src/node_main.cc '+node.source if bld.env["USE_OPENSSL"]: node.source += " src/node_crypto.cc " node.includes = """ src/ deps/libeio deps/http_parser """ if not bld.env["USE_SHARED_V8"]: node.includes += ' deps/v8/include ' if not bld.env["USE_SHARED_LIBEV"]: node.add_objects += ' ev ' node.includes += ' deps/libev ' if not bld.env["USE_SHARED_CARES"]: node.add_objects += ' cares ' node.includes += ' deps/c-ares deps/c-ares/' + bld.env['DEST_OS'] + '-' + bld.env['DEST_CPU'] if sys.platform.startswith('cygwin'): bld.env.append_value('LINKFLAGS', '-Wl,--export-all-symbols') bld.env.append_value('LINKFLAGS', '-Wl,--out-implib,default/libnode.dll.a') bld.env.append_value('LINKFLAGS', '-Wl,--output-def,default/libnode.def') bld.install_files('${PREFIX}/lib', "build/default/libnode.*") def subflags(program): x = { 'CCFLAGS' : " ".join(program.env["CCFLAGS"]).replace('"', '\\"') , 'CPPFLAGS' : " ".join(program.env["CPPFLAGS"]).replace('"', '\\"') , 'LIBFLAGS' : " ".join(program.env["LIBFLAGS"]).replace('"', '\\"') , 'PREFIX' : safe_path(program.env["PREFIX"]) , 'VERSION' : '0.3.2' # FIXME should not be hard-coded, see NODE_VERSION_STRING in src/node_version. } return x # process file.pc.in -> file.pc node_conf = bld.new_task_gen('subst', before="cxx") node_conf.source = 'src/node_config.h.in' node_conf.target = 'src/node_config.h' node_conf.dict = subflags(node) node_conf.install_path = '${PREFIX}/include/node' if bld.env["USE_DEBUG"]: node_g = node.clone("debug") node_g.target = "node_g" node_g.uselib += ' V8_G' node_conf_g = node_conf.clone("debug") node_conf_g.dict = subflags(node_g) node_conf_g.install_path = None # After creating the debug clone, append the V8 dep node.uselib += ' V8' bld.install_files('${PREFIX}/include/node/', """ config.h src/node.h src/node_object_wrap.h src/node_buffer.h src/node_events.h src/node_version.h """) # Only install the man page if it exists. # Do 'make doc install' to build and install it. if os.path.exists('doc/node.1'): bld.install_files('${PREFIX}/share/man/man1/', 'doc/node.1') bld.install_files('${PREFIX}/bin/', 'tools/node-waf', chmod=0755) bld.install_files('${PREFIX}/lib/node/wafadmin', 'tools/wafadmin/*.py') bld.install_files('${PREFIX}/lib/node/wafadmin/Tools', 'tools/wafadmin/Tools/*.py') # create a pkg-config(1) file node_conf = bld.new_task_gen('subst', before="cxx") node_conf.source = 'tools/nodejs.pc.in' node_conf.target = 'tools/nodejs.pc' node_conf.dict = subflags(node) bld.install_files('${PREFIX}/lib/pkgconfig', 'tools/nodejs.pc') def shutdown(): Options.options.debug # HACK to get binding.node out of build directory. # better way to do this? if Options.commands['configure']: if not Options.options.use_openssl: print "WARNING WARNING WARNING" print "OpenSSL not found. Will compile Node without crypto support!" if not Options.options.platform_file: print "WARNING: Platform not fully supported. Using src/platform_none.cc" elif not Options.commands['clean']: if sys.platform.startswith("win32"): if os.path.exists('build/default/node.exe'): os.system('cp build/default/node.exe .') if os.path.exists('build/debug/node_g.exe'): os.system('cp build/debug/node_g.exe .') else: if os.path.exists('build/default/node') and not os.path.exists('node'): os.symlink('build/default/node', 'node') if os.path.exists('build/debug/node_g') and not os.path.exists('node_g'): os.symlink('build/debug/node_g', 'node_g') else: if sys.platform.startswith("win32"): if os.path.exists('node.exe'): os.unlink('node.exe') if os.path.exists('node_g.exe'): os.unlink('node_g.exe') else: if os.path.exists('node'): os.unlink('node') if os.path.exists('node_g'): os.unlink('node_g')