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Enable source maps when targeting asmjs in debug mode #36901

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Thinkofname opened this issue Oct 1, 2016 · 1 comment
Closed

Enable source maps when targeting asmjs in debug mode #36901

Thinkofname opened this issue Oct 1, 2016 · 1 comment
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O-emscripten Target: 50% off wasm32-unknown-musl. the savings come out of stdio.h, but hey, you get SDL!

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@Thinkofname
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This is emcc's -g4 flag. https://kripken.github.io/emscripten-site/docs/tools_reference/emcc.html#emcc-g

Source maps make debugging asmjs code much easier with file name and line number information. I have no idea if this option works for wasm as well.
@sanxiyn sanxiyn added the O-asmjs Target: asm.js - http://asmjs.org/ label Dec 30, 2016
@brson
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brson commented Dec 31, 2016

Thanks for the suggestion! Seems worth a shot.

@RReverser RReverser mentioned this issue Feb 3, 2017
Merged
RReverser added a commit to RReverser/rust that referenced this issue Feb 7, 2017
@RReverser
Add Emscripten-specific linker
87b8c9e 
It claims to accept most GNU linker options, but in fact most of them
have no effect and instead it requires some special options which are
easier to handle in a separate trait.

Currently added:
 - `export_symbols`: works on executables as special Emscripten case
since staticlibs/dylibs aren't compiled to JS, while exports are
required to be accessible from JS.
Fixes rust-lang#39171.
 - `optimize` - translates Rust's optimization level to Emscripten
optimization level (whether passed via `-C opt-level=...` or `-O...`).
Fixes rust-lang#36899.
 - `debuginfo` - translates debug info; Emscripten has 5 debug levels
while Rust has 3, so chose to translate `-C debuginfo=1` to `-g3`
(preserves whitespace, variable and function names for easy debugging).
Fixes rust-lang#36901.
 - `no_default_libraries` - tells Emscripten to exlude `memcpy` and co.
frewsxcv added a commit to frewsxcv/rust that referenced this issue Feb 8, 2017
@frewsxcv
Rollup merge of rust-lang#39490 - RReverser:em-linker, r=alexcrichton
48c220b 
Add Emscripten-specific linker

Emscripten claims to accept most GNU linker options, but in fact most of `-Wl,...` are useless for it and instead it requires some additional special options which are easier to handle in a separate trait.

Currently added:
 - `export_symbols`: works on executables as special Emscripten case since staticlibs/dylibs aren't compiled to JS, while exports are required to be accessible from JS.
Fixes rust-lang#39171.
 - `optimize` - translates Rust's optimization level to Emscripten optimization level (whether passed via `-C opt-level=...` or `-O...`).
Fixes rust-lang#36899.
 - `debuginfo` - translates debug info; Emscripten has 5 debug levels while Rust has 3, so chose to translate `-C debuginfo=1` to `-g3` (preserves whitespace, variable and function names for easy debugging).
Fixes rust-lang#36901.
 - `no_default_libraries` - tells Emscripten to exclude `memcpy` and co.

TODO (in future PR): dynamic linking via `SIDE_MODULE` / `MAIN_MODULE` mechanism.
frewsxcv added a commit to frewsxcv/rust that referenced this issue Feb 8, 2017
@frewsxcv
Rollup merge of rust-lang#39490 - RReverser:em-linker, r=alexcrichton
08f4ea4 
Add Emscripten-specific linker

Emscripten claims to accept most GNU linker options, but in fact most of `-Wl,...` are useless for it and instead it requires some additional special options which are easier to handle in a separate trait.

Currently added:
 - `export_symbols`: works on executables as special Emscripten case since staticlibs/dylibs aren't compiled to JS, while exports are required to be accessible from JS.
Fixes rust-lang#39171.
 - `optimize` - translates Rust's optimization level to Emscripten optimization level (whether passed via `-C opt-level=...` or `-O...`).
Fixes rust-lang#36899.
 - `debuginfo` - translates debug info; Emscripten has 5 debug levels while Rust has 3, so chose to translate `-C debuginfo=1` to `-g3` (preserves whitespace, variable and function names for easy debugging).
Fixes rust-lang#36901.
 - `no_default_libraries` - tells Emscripten to exclude `memcpy` and co.

TODO (in future PR): dynamic linking via `SIDE_MODULE` / `MAIN_MODULE` mechanism.
RReverser added a commit to RReverser/rust that referenced this issue Feb 10, 2017
@RReverser
Add Emscripten-specific linker
eed6168 
It claims to accept most GNU linker options, but in fact most of them
have no effect and instead it requires some special options which are
easier to handle in a separate trait.

Currently added:
 - `export_symbols`: works on executables as special Emscripten case
since staticlibs/dylibs aren't compiled to JS, while exports are
required to be accessible from JS.
Fixes rust-lang#39171.
 - `optimize` - translates Rust's optimization level to Emscripten
optimization level (whether passed via `-C opt-level=...` or `-O...`).
Fixes rust-lang#36899.
 - `debuginfo` - translates debug info; Emscripten has 5 debug levels
while Rust has 3, so chose to translate `-C debuginfo=1` to `-g3`
(preserves whitespace, variable and function names for easy debugging).
Fixes rust-lang#36901.
 - `no_default_libraries` - tells Emscripten to exlude `memcpy` and co.
bors added a commit that referenced this issue Feb 10, 2017
@bors
Auto merge of #39490 - RReverser:em-linker, r=alexcrichton
064a0ee 
Add Emscripten-specific linker

Emscripten claims to accept most GNU linker options, but in fact most of `-Wl,...` are useless for it and instead it requires some additional special options which are easier to handle in a separate trait.

Currently added:
 - `export_symbols`: works on executables as special Emscripten case since staticlibs/dylibs aren't compiled to JS, while exports are required to be accessible from JS.
Fixes #39171.
 - `optimize` - translates Rust's optimization level to Emscripten optimization level (whether passed via `-C opt-level=...` or `-O...`).
Fixes #36899.
 - `debuginfo` - translates debug info; Emscripten has 5 debug levels while Rust has 3, so chose to translate `-C debuginfo=1` to `-g3` (preserves whitespace, variable and function names for easy debugging).
Fixes #36901.
 - `no_default_libraries` - tells Emscripten to exclude `memcpy` and co.

TODO (in future PR): dynamic linking via `SIDE_MODULE` / `MAIN_MODULE` mechanism.
@workingjubilee workingjubilee added O-emscripten Target: 50% off wasm32-unknown-musl. the savings come out of stdio.h, but hey, you get SDL! and removed O-asmjs Target: asm.js - http://asmjs.org/ labels Oct 11, 2024
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