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Warn that SUPPORT_BIG_ENDIAN is experimental #25058

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Merged
sbc100 merged 1 commit into from
Aug 28, 2025
Merged

Warn that SUPPORT_BIG_ENDIAN is experimental #25058

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2 changes: 2 additions & 0 deletions site/source/docs/tools_reference/settings_reference.rst
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Expand Up @@ -427,6 +427,8 @@ function call that uses DataView to enforce LE byte order for HEAP buffer;
This makes generated JavaScript run on BE as well as LE machines. (If 0, only
LE systems are supported). Does not affect generated wasm.

.. note:: This is an experimental setting

Default value: false

.. _safe_heap:
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1 change: 1 addition & 0 deletions src/settings.js
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Expand Up @@ -317,6 +317,7 @@ var INLINING_LIMIT = false;
// function call that uses DataView to enforce LE byte order for HEAP buffer;
// This makes generated JavaScript run on BE as well as LE machines. (If 0, only
// LE systems are supported). Does not affect generated wasm.
// [experimental]
var SUPPORT_BIG_ENDIAN = false;

// Check each write to the heap, for example, this will give a clear
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3 changes: 3 additions & 0 deletions tools/link.py
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Expand Up @@ -840,6 +840,9 @@ def phase_linker_setup(options, linker_args): # noqa: C901, PLR0912, PLR0915
if settings.GROWABLE_ARRAYBUFFERS:
diagnostics.warning('experimental', '-sGROWABLE_ARRAYBUFFERS is still experimental and not yet supported in browsers')

if settings.SUPPORT_BIG_ENDIAN:
diagnostics.warning('experimental', '-sSUPPORT_BIG_ENDIAN is experimental, not all features are fully supported.')

if settings.WASM_ESM_INTEGRATION:
diagnostics.warning('experimental', '-sWASM_ESM_INTEGRATION is still experimental and not yet supported in browsers')
default_setting('MODULARIZE', 'instance')
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