Command line arguments

Cheerp extends Clang’s command line arguments with its own flags.

-fexceptions Enable support for exception handling

-Wno-cheerp-unsafe Hide some cheerp-specific warnings

-cheerp-asmjs-symbolic-globals Compile global variable addresses as js variables in the asm.js module

-cheerp-avoid-wasm-traps Avoid traps from WebAssembly by generating more verbose code

-cheerp-bounds-check Generate debug code for bounds-checking array and object members accesses

-cheerp-dump-bc Output the final BC file

-cheerp-fix-wrong-func-casts Generate wrappers for functions casted to types with more arguments

-cheerp-force-typed-arrays Use typed arrays instead of normal arrays for list of doubles

-cheerp-global-prefix=<value> Prefix all global names with the given string

-cheerp-linear-heap-size=<value> Set wasm/asm.js heap size (in MB, default is 8)

-cheerp-linear-output=<value> Output format for the linear memory part of the program [wasm/asmjs]

-cheerp-linear-stack-size=<value> Set wasm/asm.js stack size (in MB, default is 1)

-cheerp-make-module=<value> Expose the compiled code as a [closure/commonjs/es6] module

-cheerp-make-module Create a closure around JS to avoid global namespace pollution

-cheerp-no-credits Disable Cheerp credits in JS

-cheerp-no-icf Disable identical code folding on wasm/asmjs

-cheerp-no-lto Disable final optimization step at link time

-cheerp-no-math-fround Disable JavaScript Math.fround

-cheerp-no-math-imul Disable JavaScript Math.imul

-cheerp-no-native-math Disable native JavaScript math functions

-cheerp-no-pointer-scev Disable scalar evolution for pointers

-cheerp-preexecute-main Run main/webMain in the PreExecuter step. Needs -cheerp-preexecute.

-cheerp-preexecute Enable execution of run-time init at compile time

-cheerp-pretty-code Generate human-readable JS

-cheerp-registerize-legacy Use the legacy algorithm for assigning registers

-cheerp-reserved-names=<value> A list of JS identifiers that should not be used by Cheerp

-cheerp-secondary-output-file=<file>Write the secondary output file (wasm module or asm.js memory file) to <file>

-cheerp-secondary-output-path=<path>Assume the secondary output file (wasm module or asm.js memory file) to be in path <path> at runtime

-cheerp-sourcemap-prefix=<prefix> Remove <prefix> from sourcemap paths

-cheerp-sourcemap-standalone Generate a standalone sourcemap by including all sources in the map file

-cheerp-sourcemap=<file> Write sourcemap to <file>

-cheerp-strict-linking=<value> Enable link time checks for undefined symbols [warning/error]

-cheerp-use-bigints Use the BigInt type in JS to represent i64 values

-cheerp-wasm-disable=<value> Comma separated list of WebAssembly features to disable [sharedmem/growmem/exportedtable/externref/returncalls/branchhinting]

-cheerp-wasm-enable=<value> Comma separated list of WebAssembly features to enable [sharedmem/growmem/exportedtable/externref/returncalls/branchhinting]

-cheerp-wasm-externref Enable wasm anyref and relax some ffi checks