I use this wonderful tool to generate rust bindings of Qt5.9.1. The Qt sdk is installed by brew. First I fixed a link err, which is caused by the incorrect is_framework determination. It's works. Then I find some class miss its new() method. One of the class is Widget, link to my output source.

When generating code for qt_gui

qt/cpp_to_rust/gui/c_lib/source/src/qt_gui_c_QSyntaxHighlighter.cpp:4:15: error: allocating an object of abstract class type 'QSyntaxHighlighter'
  new(output) QSyntaxHighlighter(parent);

This is when generating code for Qt 5.7 on Mac (using the travis branch)

I wonder if you have thought about how this would work? I was pointed to this on the users forum

https://github.com/White-Oak/qml-rust/blob/master/examples/qobjects.rs#L16

https://github.com/White-Oak/qml-rust/blob/master/src/macros.rs#L90

It seems fairly complex but I'm not sure how QObject works in details. Regardless slots & signals are a pretty big part of working with Qt so I wonder if you have any ideas of how this could be implemented?

Hello guys,

I'm trying to use rust-qt on Windows. I'm using only qt_widgets dependency and "cargo build" for the build. Qt5.8.0 is installed. I have an error when cmake is called for qt_core, qt_gui and qt_widgets.

DC2R_INCLUDE_PATHS variable seems to be bad : "-DC2R_INCLUDE_PATHS= C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include; C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtWidgets; C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include; C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore; C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include; C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtGui"

Is it the problem ?

Here the error message :

error: failed to run custom build command for `qt_core v0.2.3`
process didn't exit successfully: `d:\DEV\RustProjects\qt_test\target\release\build\qt_core-1774efd2dc7f4c7f\build-script-build` (exit code: 101)
--- stderr
Executing command: "qmake" "-query" "QT_VERSION"
QT_VERSION = "5.8.0"
Detecting Qt directories
Executing command: "qmake" "-query" "QT_INSTALL_HEADERS"
QT_INSTALL_HEADERS = "C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include"
Executing command: "qmake" "-query" "QT_INSTALL_LIBS"
QT_INSTALL_LIBS = "C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/lib"
Executing command: "qmake" "-query" "QT_INSTALL_DOCS"
QT_INSTALL_DOCS = "C:/dev/Qt/Qt5.8.0/Docs/Qt-5.8"
Building C++ wrapper library
Executing command: "cmake" "C:\\Users\\QuanticBoss\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\qt_core-0.2.3\\c_lib" "-G" "NMake Makefiles" "-DC2R_LIBRARY_TYPE=SHARED" "-DC2R_INCLUDE_PATHS=C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include;C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include\\QtCore" "-DC2R_LIB_PATHS=C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/lib" "-DC2R_FRAMEWORK_PATHS=" "-DC2R_LINKED_LIBS=Qt5Core" "-DC2R_LINKED_FRAMEWORKS=" "-DC2R_COMPILER_FLAGS=" "-DCMAKE_BUILD_TYPE=Release" "-DCMAKE_INSTALL_PREFIX=d:\\DEV\\RustProjects\\qt_test\\target\\release\\build\\qt_core-bc5039f4e0227f37\\out\\c_lib_install"
Error:
   0: Le fichier spécifié est introuvable. (os error 2)
   1: failed to run command: "cmake" "C:\\Users\\QuanticBoss\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\qt_core-0.2.3\\c_lib" "-G" "NMake Makefiles" "-DC2R_LIBRARY_TYPE=SHARED" "-DC2R_INCLUDE_PATHS=C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include;C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include\\QtCore" "-DC2R_LIB_PATHS=C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/lib" "-DC2R_FRAMEWORK_PATHS=" "-DC2R_LINKED_LIBS=Qt5Core" "-DC2R_LINKED_FRAMEWORKS=" "-DC2R_COMPILER_FLAGS=" "-DCMAKE_BUILD_TYPE=Release" "-DCMAKE_INSTALL_PREFIX=d:\\DEV\\RustProjects\\qt_test\\target\\release\\build\\qt_core-bc5039f4e0227f37\\out\\c_lib_install"
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error(Msg("failed to run command: \"cmake\" \"C:\\\\Users\\\\QuanticBoss\\\\.cargo\\\\registry\\\\src\\\\github.com-1ecc6299db9ec823\\\\qt_core-0.2.3\\\\c_lib\" \"-G\" \"NMake Makefiles\" \"-DC2R_LIBRARY_TYPE=SHARED\" \"-DC2R_INCLUDE_PATHS=C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include;C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/include\\\\QtCore\" \"-DC2R_LIB_PATHS=C:/dev/Qt/Qt5.8.0/5.8/msvc2015_64/lib\" \"-DC2R_FRAMEWORK_PATHS=\" \"-DC2R_LINKED_LIBS=Qt5Core\" \"-DC2R_LINKED_FRAMEWORKS=\" \"-DC2R_COMPILER_FLAGS=\" \"-DCMAKE_BUILD_TYPE=Release\" \"-DCMAKE_INSTALL_PREFIX=d:\\\\DEV\\\\RustProjects\\\\qt_test\\\\target\\\\release\\\\build\\\\qt_core-bc5039f4e0227f37\\\\out\\\\c_lib_install\""), (Some(Os { code: 2, kind: NotFound, message: "Le fichier spécifié est introuvable." }), None))', src\libcore\result.rs:997:5
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

Thanks

It's not really pleasant to use yet due to the amount of unsafe methods and the into_raw calls which are needed to leave the life time management to QObject's parent/child tree.

Clearly comes from QObject's parent/child tree fighting with Rust own memory management and Qt 3D using heavily composition and not inheritance. My goal is now to change the generator to simplify this code.

I built qt-generator binary (I have to remove -fPIC flag and add -fms-compatibility-version=19 to fix issue https://bugreports.qt.io/browse/QTCREATORBUG-15940 in executor.rs) Then I generated core, gui, widgets and ui_tools libraries into project root and add them into Cargo.toml as:

[dependencies]
qt_core = { path = "qt_core"}
qt_gui = { path = "qt_gui"}
qt_widgets = { path = "qt_widgets"}
qt_ui_tools = { path = "qt_ui_tools"}

When I start to build project I get next error:

_build_tools)
   Compiling qt_ui_tools v0.1.5 (file:///D:/devel/qt-rust-test01/qt_ui_tools)
     Running `D:\devel\qt-rust-test01\target\debug\build\qt_ui_tools-76c560e3a1c
9030c\build-script-build`
   Compiling qt_gui v0.1.5 (file:///D:/devel/qt-rust-test01/qt_gui)
     Running `D:\devel\qt-rust-test01\target\debug\build\qt_gui-4cb0bd8ab8a54939
\build-script-build`
   Compiling qt_core v0.1.5 (file:///D:/devel/qt-rust-test01/qt_core)
     Running `rustc --crate-name qt_core qt_core\src\lib.rs --crate-type lib --e
mit=dep-info,link -C debuginfo=2 -C metadata=c487475031745cd9 -C extra-filename=
-c487475031745cd9 --out-dir D:\devel\qt-rust-test01\target\debug\deps -L depende
ncy=D:\devel\qt-rust-test01\target\debug\deps --extern cpp_utils=D:\devel\qt-rus
t-test01\target\debug\deps\libcpp_utils-b667ad60ea3500de.rlib --extern libc=D:\d
evel\qt-rust-test01\target\debug\deps\liblibc-026076ef8cc90032.rlib -L native=C:
/Qt/Qt5.6.2/5.6/msvc2015_64/lib -L native=D:\devel\qt-rust-test01\target\debug\b
uild\qt_core-ec07a1a733c9474e\out\c_lib_install\lib -l Qt5Core`
error: no associated item named `connect_static` found for type `object::Object`
 in the current scope
  --> qt_core\src\connections.rs:47:7
   |
47 |       ::object::Object::connect_static((self.object() as *const ::object::O
bject,
   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

error: Could not compile `qt_core`.

Caused by:
  process didn't exit successfully: `rustc --crate-name qt_core qt_core\src\lib.
rs --crate-type lib --emit=dep-info,link -C debuginfo=2 -C metadata=c48747503174
5cd9 -C extra-filename=-c487475031745cd9 --out-dir D:\devel\qt-rust-test01\targe
t\debug\deps -L dependency=D:\devel\qt-rust-test01\target\debug\deps --extern cp
p_utils=D:\devel\qt-rust-test01\target\debug\deps\libcpp_utils-b667ad60ea3500de.
rlib --extern libc=D:\devel\qt-rust-test01\target\debug\deps\liblibc-026076ef8cc
90032.rlib -L native=C:/Qt/Qt5.6.2/5.6/msvc2015_64/lib -L native=D:\devel\qt-rus
t-test01\target\debug\build\qt_core-ec07a1a733c9474e\out\c_lib_install\lib -l Qt
5Core` (exit code: 101)
Build failed, waiting for other jobs to finish...

Rust: rustc 1.17.0 (56124baa9 2017-04-24) (MSVC) Cargo: cargo 0.18.0 (fe7b0cdcf 2017-04-24) Clang: 4.0.0 Target: x86_64-pc-windows-msvc Qt: 5.6.2 MSVC: 2017

Generated files: https://gist.github.com/o01eg/f09189548669594c263ed1ee5b823d47

cpp_to_rust revision: 0d4cd5323156

From @o01eg on April 25, 2017 12:47

When I try to build Qt application on windows I get error:

   Compiling qt_core v0.1.3
     Running `rustc --crate-name build_script_build C:\Users\oleg_schelicalnov\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.1.3\build.rs --crate-ty
pe bin --emit=dep-info,link -C debuginfo=2 -C metadata=923e9cfe594fc924 -C extra-filename=-923e9cfe594fc924 --out-dir D:\devel\qt002\target\debug\build\qt_core-
923e9cfe594fc924 -L dependency=D:\devel\qt002\target\debug\deps --extern qt_build_tools=D:\devel\qt002\target\debug\deps\libqt_build_tools-f3c031262549d90b.rlib
 --extern cpp_to_rust=D:\devel\qt002\target\debug\deps\libcpp_to_rust-6620496cc6f44dbc.rlib --cap-lints allow -L D:\devel\sqlite -L "C:\Program Files\LLVM\bin"
-L "C:\Program Files\LLVM\lib"`
     Running `D:\devel\qt002\target\debug\build\qt_core-923e9cfe594fc924\build-script-build`
error: failed to run custom build command for `qt_core v0.1.3`
process didn't exit successfully: `D:\devel\qt002\target\debug\build\qt_core-923e9cfe594fc924\build-script-build` (exit code: 1)
--- stdout
←[32mDetecting Qt directories...←[0m
←[32mExecuting command: "qmake" "-query" "QT_INSTALL_HEADERS"←[0m
←[32mQT_INSTALL_HEADERS = "D:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include"←[0m
←[32mExecuting command: "qmake" "-query" "QT_INSTALL_LIBS"←[0m
←[32mQT_INSTALL_LIBS = "D:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/lib"←[0m
←[32mReading input Cargo.toml←[0m
←[32mParsing C++ headers.←[0m
←[32mclang version 4.0.0 (tags/RELEASE_400/final)←[0m
←[32mInitializing clang...←[0m
←[32mclang arguments: ["-Xclang", "-detailed-preprocessing-record", "-fPIC", "-fcxx-exceptions", "-std=c++14", "-I", "D:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/includ
e", "-I", "D:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\\QtCore"]←[0m
←[35mDiagnostics:←[0m
←[35merror: unsupported option '-fPIC' for target 'x86_64-pc-windows-msvc'←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qnamespace.h:107:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicro
soft-enum-value]←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qnamespace.h:163:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicro
soft-enum-value]←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qnamespace.h:304:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicro
soft-enum-value]←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qnamespace.h:1343:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicr
osoft-enum-value]←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qnamespace.h:1346:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicr
osoft-enum-value]←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qnamespace.h:1377:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicr
osoft-enum-value]←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qnamespace.h:1594:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicr
osoft-enum-value]←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qvariant.h:196:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicroso
ft-enum-value]←[0m
←[35mD:/devel/Qt/Qt5.8.0/5.8/msvc2015_64/include\QtCore/qtextcodec.h:89:9: warning: enumerator value is not representable in the underlying type 'int' [-Wmicros
oft-enum-value]←[0m
←[31mError:←[0m
←[31m   0: fatal clang error←[0m
←[31m   1: C++ parser failed←[0m

rust version:

rustc 1.16.0 (30cf806ef 2017-03-10)
binary: rustc
commit-hash: 30cf806ef8881c41821fbd43e5cf3699c5290c16
commit-date: 2017-03-10
host: x86_64-pc-windows-msvc
release: 1.16.0
LLVM version: 3.9

clang version:

clang version 4.0.0 (tags/RELEASE_400/final)
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: C:\Program Files\LLVM\bin

Copied from original issue: rust-qt/qt_core#2

cpp_to_rust panics and dies right after printing "Parsing methods...". The stack trace begins in cpp_to_rust::cpp_parser::CppParser::parse_canonical_type, but I'm not sure where. Unfortunately unwrap() is called several times within that function.

Running with cargo run, I get this panic message, even in release profile. Mysteriously unhelpful panics in release builds are one of the reasons I avoid panic! and unwrap at all costs. What file or directory is it looking for?

Right now the Qt libs becomes platform dependent depending on where it was compiled.

qt.rs over here https://github.com/kitech/qt.rs/blob/master/src/gui/qcolor.rs#L570 solves it this way

  // proto:  void QColor::QColor(const char * name);
impl<'a> /*trait*/ QColor_new for (&'a  String) {
  fn new(self) -> QColor {
    // let qthis: *mut c_void = unsafe{calloc(1, 32)};
    // unsafe{_ZN6QColorC2EPKc()};
    let ctysz: c_int = unsafe{QColor_Class_Size()};
    let qthis_ph: u64 = unsafe{calloc(1, ctysz as usize)} as u64;
    let arg0 = self.as_ptr()  as *mut c_char;
    let qthis: u64 = unsafe {C_ZN6QColorC2EPKc(arg0)};
    let rsthis = QColor{qclsinst: qthis, ..Default::default()};
    return rsthis;
    // return 1;
  }
}

By having generated a function that returns a size of the object (which is in the FFI code including the C++ headers) and here doing a calloca here to allocate zeroed memory.

Of course the backside of this approach is that when using objects like this they now need to be allocated on the heap which adds run-time overhead.

Not sure if this is something worth investigating or not.

The panic message is:

values dump: [CppMethodWithFfiSignature { cpp_method: CppMethod { name: "_nil", class_membership: Some(CppMethodClassMembership { class_type: CppTypeClassBase { name: "CORBA::_omni_AbstractBaseObjref", template_arguments: None }, kind: Regular, is_virtual: false, is_pure_virtual: false, is_const: false, is_static: true, visibility: Public, is_signal: false }), operator: None, return_type: CppType { base: Class(CppTypeClassBase { name: "CORBA::Object", template_arguments: None }), indirection: Ptr, is_const: false }, arguments: [], arguments_before_omitting: None, allows_variadic_arguments: false, include_file: "CORBA_AbstractBase.h", origin_location: None, template_arguments: None, declaration_code: None, inherited_from: Some(CppMethodInheritedFrom { doc_id: "CORBA::Object::_nil", declaration_code: Some("static _ptr_type _nil ( )"), short_text: "static CORBA::Object* CORBA::Object::_nil()", class_type: CppTypeClassBase { name: "CORBA::Object", template_arguments: None } }) }, allocation_place: NotApplicable, c_signature: CppFfiFunctionSignature { arguments: [], return_type: CppFfiType { original_type: CppType { base: Class(CppTypeClassBase { name: "CORBA::Object", template_arguments: None }), indirection: Ptr, is_const: false }, ffi_type: CppType { base: Class(CppTypeClassBase { name: "CORBA::Object", template_arguments: None }), indirection: Ptr, is_const: false }, conversion: NoChange } } }, CppMethodWithFfiSignature { cpp_method: CppMethod { name: "_nil", class_membership: Some(CppMethodClassMembership { class_type: CppTypeClassBase { name: "CORBA::_omni_AbstractBaseObjref", template_arguments: None }, kind: Regular, is_virtual: false, is_pure_virtual: false, is_const: false, is_static: true, visibility: Public, is_signal: false }), operator: None, return_type: CppType { base: Class(CppTypeClassBase { name: "CORBA::AbstractBase", template_arguments: None }), indirection: Ptr, is_const: false }, arguments: [], arguments_before_omitting: None, allows_variadic_arguments: false, include_file: "CORBA_AbstractBase.h", origin_location: None, template_arguments: None, declaration_code: None, inherited_from: Some(CppMethodInheritedFrom { doc_id: "CORBA::AbstractBase::_nil", declaration_code: Some("static _ptr_type _nil ( )"), short_text: "static CORBA::AbstractBase* CORBA::AbstractBase::_nil()", class_type: CppTypeClassBase { name: "CORBA::AbstractBase", template_arguments: None } }) }, allocation_place: NotApplicable, c_signature: CppFfiFunctionSignature { arguments: [], return_type: CppFfiType { original_type: CppType { base: Class(CppTypeClassBase { name: "CORBA::AbstractBase", template_arguments: None }), indirection: Ptr, is_const: false }, ffi_type: CppType { base: Class(CppTypeClassBase { name: "CORBA::AbstractBase", template_arguments: None }), indirection: Ptr, is_const: false }, conversion: NoChange } } }]

All type caption strategies have failed! Involved functions:
  static CORBA::Object* CORBA::_omni_AbstractBaseObjref::_nil()
  static CORBA::AbstractBase* CORBA::_omni_AbstractBaseObjref::_nil()
thread 'main' panicked at 'all type caption strategies have failed', src/cpp_ffi_generator.rs:212

I'm guessing the failure is due to the overloaded return type. This should be captionable if the argument types are.

Hello, when trying to make a simple hello world application, this error appears. I have cmake available and on PATH and it seems to work on ritual too. Thanks.

   Compiling qt_core v0.5.0
   Compiling qt_gui v0.5.0
error: failed to run custom build command for `qt_core v0.5.0`

Caused by:
  process didn't exit successfully: `D:\Nadie\target\debug\build\qt_core-cbb2b238c66ca704\build-script-build` (exit code: 1)
  --- stdout
  Current Qt version (5.15.2) is unknown to qt_core crate. Using closest known version (5.14.0)
  Current target is unknown: v5.14.0 on x86_64-windows-windows-msvc
  Known targets:
  * v5.9.7 on x86_64-linux-unix-gnu
  * v5.11.3 on x86_64-linux-unix-gnu
  * v5.12.2 on x86_64-linux-unix-gnu
  * v5.13.0 on x86_64-linux-unix-gnu
  * v5.14.0 on x86_64-linux-unix-gnu
  -- RITUAL_INCLUDE_PATH=D:/Qt5/5.15.2/mingw81_64/include;D:/Qt5/5.15.2/mingw81_64/include\QtCore
  -- RITUAL_LIBRARY_PATH=D:/Qt5/5.15.2/mingw81_64/lib
  -- RITUAL_LIBRARY_TYPE=STATIC
  -- RITUAL_LINKED_LIBS=Qt5Core
  -- RITUAL_CPP_LIB_VERSION=51400
  -- Configuring done
  -- Generating done
  -- Build files have been written to: D:/Nadie/target/debug/build/qt_core-6dbeedd93e7b65b2/out/c_lib_build
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\Makefile2 /nologo -L                  clean
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_core_c.dir\build.make /nologo -L                  CMakeFiles\qt_core_c.dir\clean
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -P CMakeFiles\qt_core_c.dir\cmake_clean.cmake
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_core_c_autogen.dir\build.make /nologo -L                  CMakeFiles\qt_core_c_autogen.dir\clean
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -P CMakeFiles\qt_core_c_autogen.dir\cmake_clean.cmake
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -SC:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib -BD:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build --check-build-system CMakeFiles\Makefile.cmake 0
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_progress_start D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build\CMakeFiles D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build\\CMakeFiles\progress.marks
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\Makefile2 /nologo -L                  all
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_core_c_autogen.dir\build.make /nologo -L                  CMakeFiles\qt_core_c_autogen.dir\depend
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_depends "NMake Makefiles" C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build\CMakeFiles\qt_core_c_autogen.dir\DependInfo.cmake --color=
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_core_c_autogen.dir\build.make /nologo -L                  CMakeFiles\qt_core_c_autogen.dir\build
  [ 25%] Automatic MOC for target qt_core_c
        echo >nul && "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_autogen D:/Nadie/target/debug/build/qt_core-6dbeedd93e7b65b2/out/c_lib_build/CMakeFiles/qt_core_c_autogen.dir/AutogenInfo.json Release
  [ 25%] Built target qt_core_c_autogen
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_core_c.dir\build.make /nologo -L                  CMakeFiles\qt_core_c.dir\depend
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_depends "NMake Makefiles" C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build\CMakeFiles\qt_core_c.dir\DependInfo.cmake --color=
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_core_c.dir\build.make /nologo -L                  CMakeFiles\qt_core_c.dir\build
  [ 50%] Building CXX object CMakeFiles/qt_core_c.dir/qt_core_c_autogen/mocs_compilation.cpp.obj
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_cl_compile_depends --dep-file=CMakeFiles\qt_core_c.dir\qt_core_c_autogen\mocs_compilation.cpp.obj.d --working-dir=D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build --filter-prefix="Note: including file: " -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1432~1.313\bin\Hostx86\x86\cl.exe @C:\Users\agomi\AppData\Local\Temp\nmBE43.tmp
  mocs_compilation.cpp
  [ 75%] Building CXX object CMakeFiles/qt_core_c.dir/file1.cpp.obj
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_cl_compile_depends --dep-file=CMakeFiles\qt_core_c.dir\file1.cpp.obj.d --working-dir=D:\Nadie\target\debug\build\qt_core-6dbeedd93e7b65b2\out\c_lib_build --filter-prefix="Note: including file: " -- C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1432~1.313\bin\Hostx86\x86\cl.exe @C:\Users\agomi\AppData\Local\Temp\nmBF5D.tmp
  file1.cpp
  C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib\file1.cpp(26166): warning C4316: 'QStaticByteArrayMatcherBase': object allocated on the heap may not be aligned 16       
  C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib\file1.cpp(60440): error C2664: 'QCborStreamReader::StringResult<__int64>::StringResult(const QCborStreamReader::StringResult<__int64> &)': cannot convert argument 1 from 'QCborStreamReader::StringResult<qsizetype>' to 'const QCborStreamReader::StringResult<__int64> &'
  C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib\file1.cpp(60440): note: Reason: cannot convert from 'QCborStreamReader::StringResult<qsizetype>' to 'const QCborStreamReader::StringResult<__int64>'
  C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_core-0.5.0\c_lib\file1.cpp(60440): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
  D:\Qt5\5.15.2\mingw81_64\include\QtCore/qcborstreamreader.h(95): note: see declaration of 'QCborStreamReader::StringResult<__int64>::StringResult'

  --- stderr
  NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe"' : return code '0x2'
  Stop.
  NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"' : return code '0x2'
  Stop.
  NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"' : return code '0x2'
  Stop.
  [2022-07-28T12:25:55Z ERROR ritual_common::errors] Error:
  [2022-07-28T12:25:55Z ERROR ritual_common::errors]    command failed with exit code: 2: "cmake" "--build" "." "--" "install"
warning: build failed, waiting for other jobs to finish...
error: failed to run custom build command for `qt_gui v0.5.0`

Caused by:
  process didn't exit successfully: `D:\Nadie\target\debug\build\qt_gui-0807f13cb20b12e8\build-script-build` (exit code: 1)
  --- stdout
  Current Qt version (5.15.2) is unknown to qt_gui crate. Using closest known version (5.14.0)
  Current target is unknown: v5.14.0 on x86_64-windows-windows-msvc
  Known targets:
  * v5.9.7 on x86_64-linux-unix-gnu
  * v5.11.3 on x86_64-linux-unix-gnu
  * v5.12.2 on x86_64-linux-unix-gnu
  * v5.13.0 on x86_64-linux-unix-gnu
  * v5.14.0 on x86_64-linux-unix-gnu
  -- RITUAL_INCLUDE_PATH=D:/Qt5/5.15.2/mingw81_64/include;D:/Qt5/5.15.2/mingw81_64/include\QtGui;D:/Qt5/5.15.2/mingw81_64/include\QtCore
  -- RITUAL_LIBRARY_PATH=D:/Qt5/5.15.2/mingw81_64/lib
  -- RITUAL_LIBRARY_TYPE=STATIC
  -- RITUAL_LINKED_LIBS=Qt5Gui;Qt5Core
  -- RITUAL_CPP_LIB_VERSION=51400
  -- Configuring done
  -- Generating done
  -- Build files have been written to: D:/Nadie/target/debug/build/qt_gui-827a6824cc83f8ba/out/c_lib_build
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\Makefile2 /nologo -L                  clean
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_gui_c.dir\build.make /nologo -L                  CMakeFiles\qt_gui_c.dir\clean
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -P CMakeFiles\qt_gui_c.dir\cmake_clean.cmake
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_gui_c_autogen.dir\build.make /nologo -L                  CMakeFiles\qt_gui_c_autogen.dir\clean
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -P CMakeFiles\qt_gui_c_autogen.dir\cmake_clean.cmake
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -SC:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_gui-0.5.0\c_lib -BD:\Nadie\target\debug\build\qt_gui-827a6824cc83f8ba\out\c_lib_build --check-build-system CMakeFiles\Makefile.cmake 0
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_progress_start D:\Nadie\target\debug\build\qt_gui-827a6824cc83f8ba\out\c_lib_build\CMakeFiles D:\Nadie\target\debug\build\qt_gui-827a6824cc83f8ba\out\c_lib_build\\CMakeFiles\progress.marks
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\Makefile2 /nologo -L                  all
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_gui_c_autogen.dir\build.make /nologo -L                  CMakeFiles\qt_gui_c_autogen.dir\depend
        "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_depends "NMake Makefiles" C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_gui-0.5.0\c_lib C:\Users\agomi\.cargo\registry\src\github.com-1ecc6299db9ec823\qt_gui-0.5.0\c_lib D:\Nadie\target\debug\build\qt_gui-827a6824cc83f8ba\out\c_lib_build D:\Nadie\target\debug\build\qt_gui-827a6824cc83f8ba\out\c_lib_build D:\Nadie\target\debug\build\qt_gui-827a6824cc83f8ba\out\c_lib_build\CMakeFiles\qt_gui_c_autogen.dir\DependInfo.cmake --color=
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_gui_c_autogen.dir\build.make /nologo -L                  CMakeFiles\qt_gui_c_autogen.dir\build
  [ 25%] Automatic MOC for target qt_gui_c
        echo >nul && "C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E cmake_autogen D:/Nadie/target/debug/build/qt_gui-827a6824cc83f8ba/out/c_lib_build/CMakeFiles/qt_gui_c_autogen.dir/AutogenInfo.json Release
  [ 25%] Built target qt_gui_c_autogen
        "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"  -f CMakeFiles\qt_gui_c.dir\build.make /nologo -L                  CMakeFiles\qt_gui_c.dir\depend
  --- stderr  NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe"' : return code '0x2'
  Stop.  NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"' : return code '0x2'
  Stop.
  NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.32.31326\bin\HostX86\x86\nmake.exe"' : return code '0x2'  Stop.  [2022-07-28T12:25:56Z ERROR ritual_common::errors] Error:
  [2022-07-28T12:25:56Z ERROR ritual_common::errors]    command failed with exit code: 2: "cmake" "--build" "." "--" "install"

I also have Qt 5.15.2 on D:\Qt5\

How to build qt shared library ?

My project

the app works perfectly if I build it as an app.

TEMPLATE = app

If I create a shared lib with same code the code not gives result.

I changed TEMPLATE = app to TEMPLATE = lib and I compile the same code. But , the result comes an error.

code not give result as a qt shared lib

wifimouse app fully build with qt.

Source code of wifimouse server application

I install and run wifimouse app in my computer it works perfectly and all the options are works smoothly.

But, If I compile the same code as a shared lib in my computer it not works properly.

For example ; In wifimouse application there is an option for brightness controling

Brightness code

[]14

error comes like this. But , it works smoothly as a TEMPLATE = app.

Problem with qt in getting outputs.

My project

I want to get the cpu usage , ram usage ,process list and app list with qt.

In Windows

[]2

I am getting ram usage from this code.

But app list , cpu usage and process outputs are not showed.

In linux

[]7

In linux the cpu usage output not showed.

In Mac

[]9

In mac the app list output not showed.

All the code works perfectly if I build it as an app.

Why this problem occured ?

i ask this here, because github discussions seem to not be enabled for this project

i am still quite new to rust and have no experience in c/c++ (or other low-level / systems languages), and with this project i have to use a lot of unsafe and i also read Unsafety, but i could not understand how i could make it (more) safe, especially the following part got me thinking on how to do it properly:

Rust documentation for Qptr:

It's still possible to cause use-after-free by calling a method through QPtr. Even in a single threaded program, the accessed object can be deleted by a nested call while one of its methods is still running. In multithreaded context, the object can be deleted in another thread between the null check and the method call, also resulting in undefined behavior.

so my question is: how can i make it safe if it may not be safe after having already checked (like with is_null)? or how can i at least detect that it is wrong / malfunctioned and catch it to recover from it (like a Result in rust)?

I tried to run the examples, and it failed with the message:

[2021-12-24T21:04:44Z ERROR ritual_common::errors] Error:
[2021-12-24T21:04:44Z ERROR ritual_common::errors]    failed to run command: "cmake" "-Wno-dev" "/home/hasezoey/.local/cargo/registry/src/github.com-1ecc6299db9ec823/qt_ui_tools-0.5.0/c_lib" "-DRITUAL_LIBRARY_TYPE=STATIC" "-DRITUAL_CPP_LIB_VERSION=51400" "-DRITUAL_INCLUDE_PATH=/usr/include/qt;/usr/include/qt/QtUiTools;/usr/include/qt/QtCore;/usr/include/qt/QtGui;/usr/include/qt/QtWidgets" "-DRITUAL_LIBRARY_PATH=/usr/lib" "-DRITUAL_FRAMEWORK_PATH=" "-DRITUAL_LINKED_LIBS=Qt5UiTools;Qt5Core;Qt5Gui;Qt5Widgets" "-DRITUAL_LINKED_FRAMEWORKS=" "-DRITUAL_COMPILER_FLAGS=-std=gnu++11 -fPIC" "-DRITUAL_QT=1" "-DRITUAL_QT=1" "-DRITUAL_QT=1" "-DRITUAL_QT=1" "-DCMAKE_BUILD_TYPE=Release" "-DCMAKE_INSTALL_PREFIX=/home/hasezoey/Downloads/examples/target/release/build/qt_ui_tools-91426dae0c77750f/out/c_lib_install"
[2021-12-24T21:04:44Z ERROR ritual_common::errors]    No such file or directory (os error 2)

Which is not great, after some time trying to read through the whole command and checking the directories that are mentioned, i finally noticed that i didnt have cmake installed on my system.
So i would request to add a error saying something like Command "cmake" is not installed on your system.

environment:

• qt_core (example crate for this error) at 0.5.0
• rust (stable) at 1.41.0 (from https://github.com/rust-qt/examples/)
• linux (manjaro 21.2)

Related

• #104

Triggered by all qt_* crates i tried (including qt_core, qt_gui)

Output:

Current Qt version (5.15.2) is unknown to qt_ui_tools crate. Using closest known version (5.14.0)

I dont know if this is the correct place to report this error, but the crates (like qt_core) link to this as the repository

environment:

• qt_core (example crate for this warning) at 0.5.0
• rust (stable) at 1.41.0 (from https://github.com/rust-qt/examples/)
• linux (manjaro 21.2)