[Pkg-javascript-devel] Bug#1003873: Bug#1003873: Bug#1003873: emscripten: emcc search for /usr/bin/clang (and other binaries) which doesn't exist

[Jonas Smedegaard]

Quoting Yadd (2022-01-17 13:40:44)
> On 17/01/2022 13:30, Jonas Smedegaard wrote:
> > Control: tags -1 unreproducible

> >> when trying to build a WASM file from a C file, emcc fails because 
> >> it doesn't find /usr/bin/clang (and other clang binaries).

[...]

> > In a clone of https://salsa.debian.org/js-team/node-jest.git running 
> > above command - on a clean Debian testing system - I get this 
> > failure (after some time of compiling with clang -13):
> > 
> > error: undefined symbol: main (referenced by top-level compiled C/C++ code)
> > warning: Link with `-s LLD_REPORT_UNDEFINED` to get more information on undefined symbols
> > warning: To disable errors for undefined symbols use `-s ERROR_ON_UNDEFINED_SYMBOLS=0`
> > warning: _main may need to be added to EXPORTED_FUNCTIONS if it arrives from a system library
> > warning: To build in STANDALONE_WASM mode without a main(), use emcc --no-entry
> > Error: Aborting compilation due to previous errors
> > emcc: error: '/usr/bin/node /usr/share/emscripten/src/compiler.js /tmp/tmp4byge9ba.json' failed (returned 1)

[...]

> I'm using emscripten 3.1.1~dfsg+~1.39.6-3 with a clean Debian testing 
> (this is probably the last version available when `apt upgrade`).
> 
> Yes, I got same error after fixing paths. This is another problem, 
> upstream uses a custom clang (from wasi-sdk)

I don't understand how "pristine system" and "after fixing paths" fit 
together.

Please provide a full build log (as attached file, not inline), so it is 
possible to see (and therefore replicate) the exact commands executed on 
the prisitne Debian testing system leading to the reported state.


 - Jonas

-- 
 * Jonas Smedegaard - idealist & Internet-arkitekt
 * Tlf.: +45 40843136  Website: http://dr.jones.dk/

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