<![CDATA[Qtdeclarative error when compiling the source]]>I'm trying to compile Qt 6.6.0 using Visual Studio 2022 Preview, Version 17.10.0 Preview 7.0 (also tried the non preview version)
but it always fails in something related to qtdeclarative.

I'm calling the configure.bat on x64 Native Tools Command Prompt for VS 2022 as:

configure.bat -debug-and-release -platform win32-msvc -opensource -confirm-license -force-debug-info -webengine-proprietary-codecs -feature-vulkan -no-schannel -openssl-linked -prefix "C:\Qt\6.6.0" -- -D OPENSSL_ROOT_DIR="C:\Program Files\OpenSSL"

The build fails with:

FAILED: qtdeclarative/src/quickcontrols/fusion/.rcc/qmlcache/qtquickcontrols2fusionstyleplugin_qmlcache_loader.cpp C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/.rcc/qmlcache/qtquickcontrols2fusionstyleplugin_qmlcache_loader.cpp
cmd.exe /C "cd /D C:\Qt\6.6.0\qtdeclarative\src\quickcontrols\fusion && C:\Qt\6.6.0\.qt\bin\qt_setup_tool_path.bat C:/Qt/6.6.0/qtbase/bin/qmlcachegen.exe --resource-name qmlcache_qtquickcontrols2fusionstyleplugin --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/.rcc/qmake_QtQuick_Controls_Fusion.qrc --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/.rcc/qtquickcontrols2fusionstyleplugin_raw_qml_0.qrc --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/.rcc/qtquickcontrols2fusionstyle.qrc -o C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/.rcc/qmlcache/qtquickcontrols2fusionstyleplugin_qmlcache_loader.cpp @C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/.rcc/qmlcache/qtquickcontrols2fusionstyleplugin_qml_loader_file_list.rsp"
[7138/19556] Generating .rcc/qmlcache/QuickTest_qmlcache_loader.cpp
FAILED: qtdeclarative/src/qmltest/.rcc/qmlcache/QuickTest_qmlcache_loader.cpp C:/Qt/6.6.0/qtdeclarative/src/qmltest/.rcc/qmlcache/QuickTest_qmlcache_loader.cpp
cmd.exe /C "cd /D C:\Qt\6.6.0\qtdeclarative\src\qmltest && C:\Qt\6.6.0\.qt\bin\qt_setup_tool_path.bat C:/Qt/6.6.0/qtbase/bin/qmlcachegen.exe --resource-name qmlcache_QuickTest --resource C:/Qt/6.6.0/qtdeclarative/src/qmltest/.rcc/qmake_QtTest.qrc --resource C:/Qt/6.6.0/qtdeclarative/src/qmltest/.rcc/QuickTest_raw_qml_0.qrc -o C:/Qt/6.6.0/qtdeclarative/src/qmltest/.rcc/qmlcache/QuickTest_qmlcache_loader.cpp @C:/Qt/6.6.0/qtdeclarative/src/qmltest/.rcc/qmlcache/QuickTest_qml_loader_file_list.rsp"
[7141/19556] Generating .rcc/qmlcache/qtquickcontrols2basicstyleplugin_qmlcache_loader.cpp
FAILED: qtdeclarative/src/quickcontrols/basic/.rcc/qmlcache/qtquickcontrols2basicstyleplugin_qmlcache_loader.cpp C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/basic/.rcc/qmlcache/qtquickcontrols2basicstyleplugin_qmlcache_loader.cpp
cmd.exe /C "cd /D C:\Qt\6.6.0\qtdeclarative\src\quickcontrols\basic && C:\Qt\6.6.0\.qt\bin\qt_setup_tool_path.bat C:/Qt/6.6.0/qtbase/bin/qmlcachegen.exe --resource-name qmlcache_qtquickcontrols2basicstyleplugin --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/basic/.rcc/qmake_QtQuick_Controls_Basic.qrc --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/basic/.rcc/qtquickcontrols2basicstyleplugin_raw_qml_0.qrc --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/basic/.rcc/qtquickcontrols2basicstyleplugin.qrc -o C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/basic/.rcc/qmlcache/qtquickcontrols2basicstyleplugin_qmlcache_loader.cpp @C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/basic/.rcc/qmlcache/qtquickcontrols2basicstyleplugin_qml_loader_file_list.rsp"
[7142/19556] Generating .rcc/qmlcache/qtquickcontrols2fusionstyleimplplugin_qmlcache_loader.cpp
FAILED: qtdeclarative/src/quickcontrols/fusion/impl/.rcc/qmlcache/qtquickcontrols2fusionstyleimplplugin_qmlcache_loader.cpp C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/impl/.rcc/qmlcache/qtquickcontrols2fusionstyleimplplugin_qmlcache_loader.cpp
cmd.exe /C "cd /D C:\Qt\6.6.0\qtdeclarative\src\quickcontrols\fusion\impl && C:\Qt\6.6.0\.qt\bin\qt_setup_tool_path.bat C:/Qt/6.6.0/qtbase/bin/qmlcachegen.exe --resource-name qmlcache_qtquickcontrols2fusionstyleimplplugin --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/impl/.rcc/qmake_QtQuick_Controls_Fusion_impl.qrc --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/impl/.rcc/qtquickcontrols2fusionstyleimplplugin_raw_qml_0.qrc -o C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/impl/.rcc/qmlcache/qtquickcontrols2fusionstyleimplplugin_qmlcache_loader.cpp @C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/fusion/impl/.rcc/qmlcache/qtquickcontrols2fusionstyleimplplugin_qml_loader_file_list.rsp"
[7143/19556] Generating .rcc/qmlcache/qtquickcontrols2imaginestyleplugin_qmlcache_loader.cpp
FAILED: qtdeclarative/src/quickcontrols/imagine/.rcc/qmlcache/qtquickcontrols2imaginestyleplugin_qmlcache_loader.cpp C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/imagine/.rcc/qmlcache/qtquickcontrols2imaginestyleplugin_qmlcache_loader.cpp
cmd.exe /C "cd /D C:\Qt\6.6.0\qtdeclarative\src\quickcontrols\imagine && C:\Qt\6.6.0\.qt\bin\qt_setup_tool_path.bat C:/Qt/6.6.0/qtbase/bin/qmlcachegen.exe --resource-name qmlcache_qtquickcontrols2imaginestyleplugin --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/imagine/.rcc/qmake_QtQuick_Controls_Imagine.qrc --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/imagine/.rcc/qtquickcontrols2imaginestyleplugin_raw_qml_0.qrc --resource C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/imagine/.rcc/qmake_qtquickcontrols2imaginestyleplugin.qrc -o C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/imagine/.rcc/qmlcache/qtquickcontrols2imaginestyleplugin_qmlcache_loader.cpp @C:/Qt/6.6.0/qtdeclarative/src/quickcontrols/imagine/.rcc/qmlcache/qtquickcontrols2imaginestyleplugin_qml_loader_file_list.rsp"
[7166/19556] Building CXX object qtdeclarative\src\plugins...rviceFactoryPlugin.dir\Debug\qquickwindowinspector.cpp.obj
ninja: build stopped: subcommand failed.

Full console log: https://pastebin.com/ttCM8AUw

I have found two similar topics, this and this.

The second topic, suggest it could be an issue about ninja and long paths.
I'm already using a short path, the source is at C:/Qt/6.6.0/, i enabled on regedit LongPathsEnabled
then reboot and tried a new clean compilation, the error persist.

In the second topic @cristian-adam mention about also needing a "ninja manifest", see: https://github.com/ninja-build/ninja/pull/2225

I didnt understand how to "enable" or use this manifest, on my computer i have ninja.exe on two locations:

C:\Program Files\Microsoft Visual Studio\2022\Preview\Common7\IDE\CommonExtensions\Microsoft\CMake\Ninja
C:\Strawberry\c\bin

I tried adding the ninja.manifest from Cristian commit, in both paths, and performed a new clean compilation, but i continue getting the same error.

I also get this same error when compiling the 6.7.0 source

Full log: https://pastebin.com/jrh6GRVQ

Error:

[7295/20214] Generating .rcc/qmlcache/QuickTest_qmlcache_loader.cpp
FAILED: qtdeclarative/src/qmltest/.rcc/qmlcache/QuickTest_qmlcache_loader.cpp C:/Qt/6.7.0/qtdeclarative/src/qmltest/.rcc/qmlcache/QuickTest_qmlcache_loader.cpp
cmd.exe /C "cd /D C:\Qt\6.7.0\qtdeclarative\src\qmltest && C:\Qt\6.7.0\.qt\bin\qt_setup_tool_path.bat C:/Qt/6.7.0/qtbase/bin/qmlcachegen.exe --resource-name qmlcache_QuickTest -o C:/Qt/6.7.0/qtdeclarative/src/qmltest/.rcc/qmlcache/QuickTest_qmlcache_loader.cpp @C:/Qt/6.7.0/qtdeclarative/src/qmltest/.rcc/qmlcache/QuickTest_qml_loader_file_list.rsp"
[7324/20214] Building CXX object qtdeclarative\src\quickwidgets\CMakeFiles\QuickWidgets.dir\Debug\cmake_pch.cxx.obj
ninja: build stopped: subcommand failed.
]]>https://forum.qt.io/topic/156729/qtdeclarative-error-when-compiling-the-sourceRSS for NodeTue, 10 Mar 2026 18:31:48 GMTThu, 16 May 2024 20:41:57 GMT60<![CDATA[Reply to Qtdeclarative error when compiling the source on Sat, 18 May 2024 23:00:59 GMT]]>https://doc.qt.io/qt-6/qtwebengine-platform-notes.html doesn't mention Perl at all.

In the past when perl was needed for building Qt, I picked up the perl from git, which I already had installed.

]]>https://forum.qt.io/post/800356https://forum.qt.io/post/800356Sat, 18 May 2024 23:00:59 GMT<![CDATA[Reply to Qtdeclarative error when compiling the source on Fri, 17 May 2024 15:05:01 GMT]]>@cristian-adam isn't Strawberry Perl needed for compiling QWebEngine?
When i remove the flag -openssl-linked, it does compile correctly.

]]>https://forum.qt.io/post/800286https://forum.qt.io/post/800286Fri, 17 May 2024 15:05:01 GMT<![CDATA[Reply to Qtdeclarative error when compiling the source on Fri, 17 May 2024 09:03:44 GMT]]>I can see a few problems:

  1. You have Strawberry Perl installed. It's not needed, and most probably is causing issues.
  2. Use official CMake and Ninja tools.
    I can see that you are using CMake from Strawberry Perl 🫣

I would suggest uninstalling Strawberry Perl, getting CMake and Ninja either from Qt SDK or via winget install cmake and winget install ninja.

This has nothing to do with long paths, as you are using a short path.

]]>https://forum.qt.io/post/800263https://forum.qt.io/post/800263Fri, 17 May 2024 09:03:44 GMT