[Interest] CMake problems with WASM

[Alexandru Croitor]

Hi,

Configure with 

cmake -B build -G Ninja -S . 
-DCMAKE_TOOLCHAIN_FILE=/Users/Shared/Qt6.2.0/6.6.0/wasm_singlethread/lib/cmake/Qt6/qt.toolchain.cmake 
-DQT_CHAINLOAD_TOOLCHAIN_FILE=<path-to-vcpkg-toolchain>

> On 21. Nov 2023, at 15:04, DAS Loop <dasloop at gmail.com> wrote:
> 
> 
> Hi,
> 
> I have a small test for wasm using cmake that compiles only for the main architecture (in my case macOS). 
> 
> With Qt installed in the following paths:
> - /Users/Shared/Qt6.2.0/6.6.0/macos
> - /Users/Shared/Qt6.2.0/6.6.0/wasm_singlethread
> 
> If I generate the build with:
> 
> cmake -B build -G Ninja -S . -DCMAKE_PREFIX_PATH=/Users/Shared/Qt6.2.0/6.6.0/wasm_singlethread
> 
> The app is later (cmake --build build) compiled for macOS.
> 
> If I did, instead:
> 
> cmake -B build -G Ninja -S . -DCMAKE_TOOLCHAIN_FILE=/Users/Shared/Qt6.2.0/6.6.0/wasm_singlethread/lib/cmake/Qt6/qt.toolchain.cmake
> 
> The app is compiled for wasm as expected.
> 
> Because I´m using vcpkg, using CMAKE_TOOLCHAIN_FILE is not a solution for me.
> 
> Any idea of what is wrong?
> 
> Thanks,
> 
> David
> 
> The CMakeLists.txt is:
> 
> cmake_minimum_required(VERSION 3.20)
> 
> project( main-wasm LANGUAGES CXX )
> 
> find_package( Qt6 COMPONENTS Core Widgets REQUIRED )
> 
> qt_standard_project_setup()
> qt_add_executable( ${PROJECT_NAME} main.cpp )
> 
> target_link_libraries( ${PROJECT_NAME} PRIVATE Qt::Core Qt::Widgets )
> 
> 
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