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349 lines (340 loc) · 9.62 KB
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{
"version": {
"category": "General",
"description": "Prints just the compiler's version and exits.",
"type": "b",
"alias": "v"
},
"help": {
"category": "General",
"description": "Prints this message and exits.",
"type": "b",
"alias": "h"
},
"noColors": {
"category": "General",
"description": "Disables terminal colors.",
"type": "b",
"default": false
},
"optimize": {
"category": "Optimization",
"description": [
"Optimizes the module. Typical shorthands are:",
"",
" Default optimizations -O / -O3s",
" Make a release build -O --noAssert",
" Make a debug build --debug",
" Optimize for speed -O3",
" Optimize for size -O3z --converge",
""
],
"type": "b",
"alias": "O"
},
"optimizeLevel": {
"category": "Optimization",
"description": "How much to focus on optimizing code. [0-3]",
"type": "i"
},
"shrinkLevel": {
"category": "Optimization",
"description": "How much to focus on shrinking code size. [0-2, s=1, z=2]",
"type": "i"
},
"converge": {
"category": "Optimization",
"description": "Re-optimizes until no further improvements can be made.",
"type": "b",
"default": false
},
"noAssert": {
"category": "Optimization",
"description": "Replaces assertions with just their value without trapping.",
"type": "b",
"default": false
},
"runtime": {
"category": "Optimization",
"description": [
"Specifies the runtime variant to include in the program.",
"",
" full Default runtime based on TLSF and reference counting.",
" half Same as 'full', but not exported to the host.",
" stub Minimal stub implementation without free/GC support.",
" none Same as 'stub', but not exported to the host.",
""
],
"type": "s",
"default": "full"
},
"outFile": {
"category": "Output",
"description": "Specifies the output file. File extension indicates format.",
"type": "s",
"alias": "o"
},
"binaryFile": {
"category": "Output",
"description": "Specifies the binary output file (.wasm).",
"type": "s",
"alias": "b"
},
"textFile": {
"category": "Output",
"description": "Specifies the text output file (.wat).",
"type": "s",
"alias": "t"
},
"jsFile": {
"category": "Output",
"description": "Specifies the JavaScript (via wasm2js) output file (.js).",
"type": "s",
"alias": "j"
},
"idlFile": {
"category": "Output",
"description": "Specifies the WebIDL output file (.webidl).",
"type": "s",
"alias": "i"
},
"tsdFile": {
"category": "Output",
"description": "Specifies the TypeScript definition output file (.d.ts).",
"type": "s",
"alias": "d"
},
"sourceMap": {
"category": "Debugging",
"description": [
"Enables source map generation. Optionally takes the URL",
"used to reference the source map from the binary file."
],
"type": "s"
},
"debug": {
"category": "Debugging",
"description": "Enables debug information in emitted binaries.",
"type": "b",
"default": false
},
"importMemory": {
"category": "Features",
"description": "Imports the memory provided as 'env.memory'.",
"type": "b",
"default": false
},
"noExportMemory": {
"category": "Features",
"description": "Does not export the memory as 'memory'.",
"type": "b",
"default": false
},
"initialMemory": {
"category": "Features",
"description": "Sets the initial memory size in pages.",
"type": "i",
"default": 0
},
"maximumMemory": {
"category": "Features",
"description": "Sets the maximum memory size in pages.",
"type": "i",
"default": 0
},
"sharedMemory": {
"category": "Features",
"description": "Declare memory as shared. Requires maximumMemory.",
"type": "b",
"default": false
},
"importTable": {
"category": "Features",
"description": "Imports the function table provided as 'env.table'.",
"type": "b",
"default": false
},
"exportTable": {
"category": "Features",
"description": "Exports the function table as 'table'.",
"type": "b",
"default": false
},
"explicitStart": {
"category": "Features",
"description": "Exports an explicit '_start' function to call.",
"type": "b",
"default": false
},
"enable": {
"category": "Features",
"description": [
"Enables WebAssembly features being disabled by default.",
"",
" sign-extension Sign-extension operations",
" bulk-memory Bulk memory operations.",
" simd SIMD types and operations.",
" threads Threading and atomic operations.",
" reference-types Reference types and operations.",
""
],
"TODO_doesNothingYet": [
" nontrapping-f2i Non-trapping float to integer ops.",
" exception-handling Exception handling.",
" tail-calls Tail call operations.",
" multi-value Multi value types."
],
"type": "S",
"mutuallyExclusive": "disable"
},
"disable": {
"category": "Features",
"description": [
"Disables WebAssembly features being enabled by default.",
"",
" mutable-globals Mutable global imports and exports.",
""
],
"type": "S",
"mutuallyExclusive": "enable"
},
"use": {
"category": "Features",
"description": [
"Aliases a global object under another name, e.g., to switch",
"the default 'Math' implementation used: --use Math=JSMath",
"Can also be used to introduce an integer constant."
],
"type": "S",
"alias": "u"
},
"lowMemoryLimit": {
"category": "Features",
"description": "Enforces very low (<64k) memory constraints.",
"default": 0,
"type": "i"
},
"memoryBase": {
"category": "Linking",
"description": "Sets the start offset of emitted memory segments.",
"type": "i",
"default": 0
},
"memoryData": {
"category": "Linking",
"description": "Path to a file to inject as raw memory after memoryBase.",
"type": "s"
},
"tableBase": {
"category": "Linking",
"description": "Sets the start offset of emitted table elements.",
"type": "i",
"default": 0
},
"transform": {
"category": "API",
"description": "Specifies the path to a custom transform to 'require'.",
"type": "S"
},
"trapMode": {
"category": "Binaryen",
"description": [
"Sets the trap mode to use.",
"",
" allow Allow trapping operations. This is the default.",
" clamp Replace trapping operations with clamping semantics.",
" js Replace trapping operations with JS semantics.",
""
],
"type": "s",
"default": "allow"
},
"runPasses": {
"category": "Binaryen",
"description": [
"Specifies additional Binaryen passes to run after other",
"optimizations, if any. See: Binaryen/src/passes/pass.cpp"
],
"type": "s"
},
"noValidate": {
"category": "Binaryen",
"description": "Skips validating the module using Binaryen.",
"type": "b",
"default": false
},
"baseDir": {
"description": "Specifies the base directory of input and output files.",
"type": "s",
"default": "."
},
"extension": {
"description": "Specifies an alternative file extension to use.",
"type": "s"
},
"noUnsafe": {
"description": [
"Disallows the use of unsafe features in user code.",
"Does not affect library files and external modules."
],
"type": "b",
"default": false
},
"noEmit": {
"description": "Performs compilation as usual but does not emit code.",
"type": "b",
"default": false
},
"measure": {
"description": "Prints measuring information on I/O and compile times.",
"type": "b",
"default": false
},
"pedantic": {
"description": "Make yourself sad for no good reason.",
"type": "b",
"default": false
},
"lib": {
"description": [
"Adds one or multiple paths to custom library components and",
"uses exports of all top-level files at this path as globals."
],
"type": "s"
},
"path": {
"description": [
"Adds one or multiple paths to package resolution, similar",
"to node_modules. Prefers an 'ascMain' entry in a package's",
"package.json and falls back to an inner 'assembly/' folder."
],
"type": "S"
},
"traceResolution": {
"description": "Enables tracing of package resolution.",
"type": "b",
"default": false
},
"listFiles": {
"description": "Lists files to be compiled and exits.",
"type": "b",
"default": false
},
" ...": {
"description": "Specifies node.js options (CLI only). See: node --help"
},
"-Os": { "value": { "optimize": true, "shrinkLevel": 1 } },
"-Oz": { "value": { "optimize": true, "shrinkLevel": 2 } },
"-O0": { "value": { "optimizeLevel": 0, "shrinkLevel": 0 } },
"-O1": { "value": { "optimizeLevel": 1, "shrinkLevel": 0 } },
"-O2": { "value": { "optimizeLevel": 2, "shrinkLevel": 0 } },
"-O3": { "value": { "optimizeLevel": 3, "shrinkLevel": 0 } },
"-O0s": { "value": { "optimizeLevel": 0, "shrinkLevel": 1 } },
"-O1s": { "value": { "optimizeLevel": 1, "shrinkLevel": 1 } },
"-O2s": { "value": { "optimizeLevel": 2, "shrinkLevel": 1 } },
"-O3s": { "value": { "optimizeLevel": 3, "shrinkLevel": 1 } },
"-O0z": { "value": { "optimizeLevel": 0, "shrinkLevel": 2 } },
"-O1z": { "value": { "optimizeLevel": 1, "shrinkLevel": 2 } },
"-O2z": { "value": { "optimizeLevel": 2, "shrinkLevel": 2 } },
"-O3z": { "value": { "optimizeLevel": 3, "shrinkLevel": 2 } }
}