the linker flags are indeed passed in both of them, but the loader
module throws an error "LearnOpenGL/hello-triangle/shaders/shader.vert"
file not found. i use make on linux and ninja on windows though i see
your point, ninja is significantly faster. am using `--embed-file` now,
thanks sam!
regards
sahil gautam
On 12/15/25 11:50 PM, 'Sam Clegg' via emscripten-discuss wrote:
`target_link_options` should certainly work, and
`CMAKE_EXE_LINKER_FLAGS` will also work (the downside is that it
applies to all executables).
Can you build with `ninja -v` or `make VERBOSE=1` so you can see the
full link command that is being used (if you are not using ninja yet I
recommend switching right away).
You can then easily see if the `--preload-file` argument is passed to
the linker or not.
Also, I highly recommend using `--embed-file` over `--preload-file`
unless you have a specific reason not to. Embedding files in the
binary in more efficient in several ways.
cheers,
sam
On Sun, Dec 14, 2025 at 4:23 PM Sahil Gautam
<[email protected]> wrote:
hi, i have been putting together an opengl application and
recently i got to know about Emscripten and wasm, so i got to work
to add support for wasm. i got most of the things working thanks
to the demo[2]. most of the examples (in [2] and elsewhere on the
internet) append to `CMAKE_EXE_LINKER_FLAGS` the wasm specific
linker flags including `--preload-file ... `. i read somewhere
while learning cmake "we shouldn't modify CMAKE_EXE_LINKER_FLAGS
directly".. don't remember where i read that.
so i tried using `target_link_options` but the files don't load
and the .data file isn't created either. i wonder if there's a
better way to set these flags than directly appending
to CMAKE_EXE_LINKER_FLAGS and i also wonder
why target_link_options doesn't work.
i will really appreciate some help. i asked this question on an
old github issue [3] as well, then got the idea of writing to the
mailing list.
regards
sahil gautam
[1]: https://codeberg.org/printfdebugging/learnopengl
[2]:
https://github.com/pongasoft/emscripten-glfw/blob/master/test/demo/CMakeLists.txt
[3]:
https://github.com/emscripten-core/emscripten/issues/4398#issuecomment-3652385357
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