PS: AFAIK what's not possible with cmake is to do a "mixed build" where some parts of the build are compiled to WASM and some parts are compiled as native (or a different cross-compilation target). This is a general limitation of cmake (again - only as far as I know - maybe there's a way around the limitation).
On Thursday, 15 July 2021 at 11:39:15 UTC+2 Floh wrote: > The "easy way" is to use the emcmake wrapper that comes with the > Emscripten SDK, AFAIK what this does is invoke CMake with an Emscripten > specific toolchain file (which lives here: > https://github.com/emscripten-core/emscripten/blob/main/cmake/Modules/Platform/Emscripten.cmake > ). > > I have an example for this here (see the emscripten build instructions in > the readme, and checkout the CMakeLists.txt file which has some emscripten > specific settings): > > https://github.com/floooh/pacman.c > > The next option is to skip the emcmake wrapper and use the SDK's toolchain > file, or your own variation of this toolchain file. The starting point is > to run cmake giving it emscripten's toolchain file: > > cmake -DCMAKE_TOOLCHAIN_FILE=[path to emsdk toolchain file] .. > > AFAIK including a toolchain file in the CMakeLists.txt file based on a > CMake option suffers from a chicken-egg situation, it's more robust to set > the toolchain file as part of the command line invocation. > > This is basically a "cmake crosscompiling scenario" with a custom > toolchain file (as opposed to cmake's builtin cross compiling targets). > CMake's documentation for this is here: > > https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html > > Cheers! > On Thursday, 15 July 2021 at 09:54:47 UTC+2 niro...@gmail.com wrote: > >> Hi, >> >> I would like to integrate emscripten and to build a library compiled to >> WASM on a complex C++ project. >> >> The best flow for me will be integrated it on the main flow on the cmake >> configure, meaning: if a user set a flag to true (let say >> BUILD_TO_WASM=true) than the cmake will be built as WASM, otherwise it will >> build with the default OS toolchain. >> >> I can't find much documantation on how to integrate emscripten into cmake >> (I want to avoid using emconfigure/emmake) >> >> How can it be done? >> "ExternalProject_Add"? >> >> any reference for such a build? >> >> Thanks >> Nir >> > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to emscripten-discuss+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/6a4eb95a-f25d-4972-a5f0-72ad73bdccd4n%40googlegroups.com.
