summaryrefslogtreecommitdiff
path: root/platform/javascript/detect.py
diff options
context:
space:
mode:
Diffstat (limited to 'platform/javascript/detect.py')
-rw-r--r--platform/javascript/detect.py127
1 files changed, 75 insertions, 52 deletions
diff --git a/platform/javascript/detect.py b/platform/javascript/detect.py
index 7e6a1518ed..a48cb872ee 100644
--- a/platform/javascript/detect.py
+++ b/platform/javascript/detect.py
@@ -8,23 +8,22 @@ def is_active():
def get_name():
- return "JavaScript"
+ return 'JavaScript'
def can_build():
-
- return ("EMSCRIPTEN_ROOT" in os.environ or "EMSCRIPTEN" in os.environ)
+ return 'EM_CONFIG' in os.environ or os.path.exists(os.path.expanduser('~/.emscripten'))
def get_opts():
from SCons.Variables import BoolVariable
return [
+ # eval() can be a security concern, so it can be disabled.
BoolVariable('javascript_eval', 'Enable JavaScript eval interface', True),
]
def get_flags():
-
return [
('tools', False),
('module_theora_enabled', False),
@@ -36,24 +35,11 @@ def get_flags():
]
-def create(env):
-
- # remove Windows' .exe suffix
- return env.Clone(tools=['textfile', 'zip'], PROGSUFFIX='')
-
-
-def escape_sources_backslashes(target, source, env, for_signature):
- return [path.replace('\\','\\\\') for path in env.GetBuildPath(source)]
-
-def escape_target_backslashes(target, source, env, for_signature):
- return env.GetBuildPath(target[0]).replace('\\','\\\\')
-
-
def configure(env):
## Build type
- if (env["target"] == "release"):
+ if env['target'] == 'release' or env['target'] == 'profile':
# Use -Os to prioritize optimizing for reduced file size. This is
# particularly valuable for the web platform because it directly
# decreases download time.
@@ -62,65 +48,102 @@ def configure(env):
# run-time performance.
env.Append(CCFLAGS=['-Os'])
env.Append(LINKFLAGS=['-Os'])
-
- elif (env["target"] == "release_debug"):
- env.Append(CCFLAGS=['-O2', '-DDEBUG_ENABLED'])
- env.Append(LINKFLAGS=['-O2', '-s', 'ASSERTIONS=1'])
- # retain function names at the cost of file size, for backtraces and profiling
+ if env['target'] == 'profile':
+ env.Append(LINKFLAGS=['--profiling-funcs'])
+
+ elif env['target'] == 'release_debug':
+ env.Append(CPPDEFINES=['DEBUG_ENABLED'])
+ env.Append(CCFLAGS=['-O2'])
+ env.Append(LINKFLAGS=['-O2'])
+ # Retain function names for backtraces at the cost of file size.
env.Append(LINKFLAGS=['--profiling-funcs'])
- elif (env["target"] == "debug"):
- env.Append(CCFLAGS=['-O1', '-D_DEBUG', '-g', '-DDEBUG_ENABLED'])
+ elif env['target'] == 'debug':
+ env.Append(CPPDEFINES=['DEBUG_ENABLED'])
+ env.Append(CCFLAGS=['-O1', '-g'])
env.Append(LINKFLAGS=['-O1', '-g'])
+ env.Append(LINKFLAGS=['-s', 'ASSERTIONS=1'])
## Compiler configuration
env['ENV'] = os.environ
- if ("EMSCRIPTEN_ROOT" in os.environ):
- env.PrependENVPath('PATH', os.environ['EMSCRIPTEN_ROOT'])
- elif ("EMSCRIPTEN" in os.environ):
- env.PrependENVPath('PATH', os.environ['EMSCRIPTEN'])
- env['CC'] = 'emcc'
- env['CXX'] = 'em++'
- env['LINK'] = 'emcc'
- env['RANLIB'] = 'emranlib'
- # Emscripten's ar has issues with duplicate file names, so use cc
- env['AR'] = 'emcc'
- env['ARFLAGS'] = '-o'
-
- if (os.name == 'nt'):
- # use TempFileMunge on Windows since some commands get too long for
- # cmd.exe even with spawn_fix
- # need to escape backslashes for this
- env['ESCAPED_SOURCES'] = escape_sources_backslashes
- env['ESCAPED_TARGET'] = escape_target_backslashes
- env['ARCOM'] = '${TEMPFILE("%s")}' % env['ARCOM'].replace('$SOURCES', '$ESCAPED_SOURCES').replace('$TARGET', '$ESCAPED_TARGET')
+ em_config_file = os.getenv('EM_CONFIG') or os.path.expanduser('~/.emscripten')
+ if not os.path.exists(em_config_file):
+ raise RuntimeError("Emscripten configuration file '%s' does not exist" % em_config_file)
+ with open(em_config_file) as f:
+ em_config = {}
+ try:
+ # Emscripten configuration file is a Python file with simple assignments.
+ exec(f.read(), em_config)
+ except StandardError as e:
+ raise RuntimeError("Emscripten configuration file '%s' is invalid:\n%s" % (em_config_file, e))
+ if 'EMSCRIPTEN_ROOT' not in em_config:
+ raise RuntimeError("'EMSCRIPTEN_ROOT' missing in Emscripten configuration file '%s'" % em_config_file)
+ env.PrependENVPath('PATH', em_config['EMSCRIPTEN_ROOT'])
+
+ env['CC'] = 'emcc'
+ env['CXX'] = 'em++'
+ env['LINK'] = 'emcc'
+
+ # Emscripten's ar has issues with duplicate file names, so use cc.
+ env['AR'] = 'emcc'
+ env['ARFLAGS'] = '-o'
+ # emranlib is a noop, so it's safe to use with AR=emcc.
+ env['RANLIB'] = 'emranlib'
+
+ # Use TempFileMunge since some AR invocations are too long for cmd.exe.
+ # Use POSIX-style paths, required with TempFileMunge.
+ env['ARCOM_POSIX'] = env['ARCOM'].replace(
+ '$TARGET', '$TARGET.posix').replace(
+ '$SOURCES', '$SOURCES.posix')
+ env['ARCOM'] = '${TEMPFILE(ARCOM_POSIX)}'
+
+ # All intermediate files are just LLVM bitcode.
+ env['OBJPREFIX'] = ''
env['OBJSUFFIX'] = '.bc'
+ env['PROGPREFIX'] = ''
+ # Program() output consists of multiple files, so specify suffixes manually at builder.
+ env['PROGSUFFIX'] = ''
+ env['LIBPREFIX'] = 'lib'
env['LIBSUFFIX'] = '.bc'
+ env['LIBPREFIXES'] = ['$LIBPREFIX']
+ env['LIBSUFFIXES'] = ['$LIBSUFFIX']
## Compile flags
env.Append(CPPPATH=['#platform/javascript'])
- env.Append(CPPFLAGS=['-DJAVASCRIPT_ENABLED', '-DUNIX_ENABLED', '-DPTHREAD_NO_RENAME', '-DTYPED_METHOD_BIND', '-DNO_THREADS'])
- env.Append(CPPFLAGS=['-DGLES3_ENABLED'])
+ env.Append(CPPDEFINES=['JAVASCRIPT_ENABLED', 'UNIX_ENABLED'])
- # These flags help keep the file size down
- env.Append(CPPFLAGS=["-fno-exceptions", '-DNO_SAFE_CAST', '-fno-rtti'])
+ # No multi-threading (SharedArrayBuffer) available yet,
+ # once feasible also consider memory buffer size issues.
+ env.Append(CPPDEFINES=['NO_THREADS'])
+
+ # These flags help keep the file size down.
+ env.Append(CCFLAGS=['-fno-exceptions', '-fno-rtti'])
+ # Don't use dynamic_cast, necessary with no-rtti.
+ env.Append(CPPDEFINES=['NO_SAFE_CAST'])
if env['javascript_eval']:
- env.Append(CPPFLAGS=['-DJAVASCRIPT_EVAL_ENABLED'])
+ env.Append(CPPDEFINES=['JAVASCRIPT_EVAL_ENABLED'])
## Link flags
env.Append(LINKFLAGS=['-s', 'BINARYEN=1'])
+
+ # Allow increasing memory buffer size during runtime. This is efficient
+ # when using WebAssembly (in comparison to asm.js) and works well for
+ # us since we don't know requirements at compile-time.
env.Append(LINKFLAGS=['-s', 'ALLOW_MEMORY_GROWTH=1'])
+
+ # This setting just makes WebGL 2 APIs available, it does NOT disable WebGL 1.
env.Append(LINKFLAGS=['-s', 'USE_WEBGL2=1'])
- env.Append(LINKFLAGS=['-s', 'EXTRA_EXPORTED_RUNTIME_METHODS="[\'FS\']"'])
env.Append(LINKFLAGS=['-s', 'INVOKE_RUN=0'])
+
+ # TODO: Reevaluate usage of this setting now that engine.js manages engine runtime.
env.Append(LINKFLAGS=['-s', 'NO_EXIT_RUNTIME=1'])
- # TODO: Move that to opus module's config
+ # TODO: Move that to opus module's config.
if 'module_opus_enabled' in env and env['module_opus_enabled']:
- env.opus_fixed_point = "yes"
+ env.opus_fixed_point = 'yes'
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 13:08:13 +0000