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Enable memory growth in WebAssembly builds

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This allows setting TOTAL_MEMORY during runtime at the cost of reserving
a bit more memory.
This commit is contained in:
eska 2016-11-11 03:58:03 +01:00
parent 31f929caa2
commit 82addf2ffe
1 changed files with 7 additions and 0 deletions
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7
platform/javascript/detect.py
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@ -76,6 +76,7 @@ def configure(env):
if("module_opus_enabled" in env and env["module_opus_enabled"] != "no"): if("module_opus_enabled" in env and env["module_opus_enabled"] != "no"):
env.opus_fixed_point = "yes" env.opus_fixed_point = "yes"
# These flags help keep the file size down
env.Append(CPPFLAGS=["-fno-exceptions", '-DNO_SAFE_CAST', '-fno-rtti']) env.Append(CPPFLAGS=["-fno-exceptions", '-DNO_SAFE_CAST', '-fno-rtti'])
env.Append(CPPFLAGS=['-DJAVASCRIPT_ENABLED', '-DUNIX_ENABLED', '-DPTHREAD_NO_RENAME', '-DNO_FCNTL', '-DMPC_FIXED_POINT', '-DTYPED_METHOD_BIND', '-DNO_THREADS']) env.Append(CPPFLAGS=['-DJAVASCRIPT_ENABLED', '-DUNIX_ENABLED', '-DPTHREAD_NO_RENAME', '-DNO_FCNTL', '-DMPC_FIXED_POINT', '-DTYPED_METHOD_BIND', '-DNO_THREADS'])
env.Append(CPPFLAGS=['-DGLES2_ENABLED']) env.Append(CPPFLAGS=['-DGLES2_ENABLED'])
@ -86,6 +87,12 @@ def configure(env):
if env['wasm'] == 'yes': if env['wasm'] == 'yes':
env.Append(LINKFLAGS=['-s', 'BINARYEN=1']) env.Append(LINKFLAGS=['-s', 'BINARYEN=1'])
env.Append(LINKFLAGS=['-s', '\'BINARYEN_METHOD="native-wasm"\'']) env.Append(LINKFLAGS=['-s', '\'BINARYEN_METHOD="native-wasm"\''])
# Maximum memory size is baked into the WebAssembly binary during
# compilation, so we need to enable memory growth to allow setting
# TOTAL_MEMORY at runtime. The value set at runtime must be higher than
# what is set during compilation, check TOTAL_MEMORY in Emscripten's
# src/settings.js for the default.
env.Append(LINKFLAGS=['-s', 'ALLOW_MEMORY_GROWTH=1'])
env["PROGSUFFIX"] += ".webassembly" env["PROGSUFFIX"] += ".webassembly"
else: else:
env.Append(CPPFLAGS=['-s', 'ASM_JS=1']) env.Append(CPPFLAGS=['-s', 'ASM_JS=1'])