Error while compiling Qt from source - use of undeclared identifier 'QOAuth1Signature'

haiku

Hello! I'm trying to build Qt from source and I'm running into an error about 3 hours into the build (See end for error)

I am compiling on Ubuntu (Windows Linux Subsystem) following the instructions here and here.

The exact commands I ran were:

mkdir qt
cd qt

git clone git://code.qt.io/qt/qt5.git
cd qt5
git checkout 5.15.0
perl init-repository --module-subset=default,-qtwebengine

cd ..
mkdir build
cd build

../qt5/configure -xplatform wasm-emscripten -opensource -nomake examples -prefix $PWD/qtbase
make

And here is the error I am getting:

em++ -c -Xclang -include-pch -Xclang .pch/Qt5NetworkAuth.pch/c++.pch -pipe -O2 -std=c++1z -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -s ALLOW_MEMORY_GROWTH=1 -Wall -Wextra -Wdate-time -Winconsistent-missing-override -DQT_NO_LINKED_LIST -DQT_NO_FOREACH -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_LINKED_LIST -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_BUILD_NETWORKAUTH_LIB -DQT_BUILDING_QT -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_DEPRECATED_WARNINGS_SINCE=0x060000 -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_NETWORK_LIB -DQT_CORE_LIB -I/mnt/s/qt/qt5/qtnetworkauth/src/oauth -I. -I/mnt/s/qt/build/qtbase/include -I/mnt/s/qt/build/qtbase/include/QtNetworkAuth -I/mnt/s/qt/build/qtbase/include/QtNetworkAuth/5.15.0 -I/mnt/s/qt/build/qtbase/include/QtNetworkAuth/5.15.0/QtNetworkAuth -I/mnt/s/qt/build/qtbase/include/QtCore/5.15.0 -I/mnt/s/qt/build/qtbase/include/QtCore/5.15.0/QtCore -I/mnt/s/qt/build/qtbase/include/QtNetwork -I/mnt/s/qt/build/qtbase/include/QtCore -I.moc -I/mnt/s/qt/qt5/qtbase/mkspecs/wasm-emscripten -o .obj/qoauth1signature.o /mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp
In file included from /mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:31:
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature_p.h:57:46: error: use of undeclared identifier 'QOAuth1Signature'
    QOAuth1SignaturePrivate(const QUrl &url, QOAuth1Signature::HttpRequestMethod method,
                                             ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature_p.h:68:5: error: use of undeclared identifier 'QOAuth1Signature'
    QOAuth1Signature::HttpRequestMethod method = QOAuth1Signature::HttpRequestMethod::Post;
    ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:85:32: error: use of undeclared identifier 'QOAuth1Signature'
static_assert(static_cast<int>(QOAuth1Signature::HttpRequestMethod::Head) ==
                               ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:87:32: error: use of undeclared identifier 'QOAuth1Signature'
              static_cast<int>(QOAuth1Signature::HttpRequestMethod::Get) ==
                               ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:89:32: error: use of undeclared identifier 'QOAuth1Signature'
              static_cast<int>(QOAuth1Signature::HttpRequestMethod::Put) ==
                               ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:91:32: error: use of undeclared identifier 'QOAuth1Signature'
              static_cast<int>(QOAuth1Signature::HttpRequestMethod::Post) ==
                               ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:93:32: error: use of undeclared identifier 'QOAuth1Signature'
              static_cast<int>(QOAuth1Signature::HttpRequestMethod::Delete) ==
                               ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:100:50: error: use of undeclared identifier 'QOAuth1Signature'
                                                 QOAuth1Signature::HttpRequestMethod method,
                                                 ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:114:10: error: use of undeclared identifier 'QOAuth1Signature'
    case QOAuth1Signature::HttpRequestMethod::Head:
         ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:117:10: error: use of undeclared identifier 'QOAuth1Signature'
    case QOAuth1Signature::HttpRequestMethod::Get:
         ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:120:10: error: use of undeclared identifier 'QOAuth1Signature'
    case QOAuth1Signature::HttpRequestMethod::Put:
         ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:123:10: error: use of undeclared identifier 'QOAuth1Signature'
    case QOAuth1Signature::HttpRequestMethod::Post:
         ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:126:10: error: use of undeclared identifier 'QOAuth1Signature'
    case QOAuth1Signature::HttpRequestMethod::Delete:
         ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:129:10: error: use of undeclared identifier 'QOAuth1Signature'
    case QOAuth1Signature::HttpRequestMethod::Custom:
         ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:194:1: error: use of undeclared identifier 'QOAuth1Signature'
QOAuth1Signature::QOAuth1Signature(const QUrl &url, QOAuth1Signature::HttpRequestMethod method,
^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:194:53: error: use of undeclared identifier 'QOAuth1Signature'
QOAuth1Signature::QOAuth1Signature(const QUrl &url, QOAuth1Signature::HttpRequestMethod method,
                                                    ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:211:1: error: use of undeclared identifier 'QOAuth1Signature'
QOAuth1Signature::QOAuth1Signature(const QUrl &url, const QString &clientSharedKey,
^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:212:64: error: unknown type name 'HttpRequestMethod'
                                   const QString &tokenSecret, HttpRequestMethod method,
                                                               ^
/mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp:220:1: error: use of undeclared identifier 'QOAuth1Signature'
QOAuth1Signature::QOAuth1Signature(const QOAuth1Signature &other) : d(other.d)
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
em++: error: '/mnt/s/emscripten/emsdk/upstream/bin/clang++ -target wasm32-unknown-emscripten -D__EMSCRIPTEN_major__=1 -D__EMSCRIPTEN_minor__=39 -D__EMSCRIPTEN_tiny__=20 -D_LIBCPP_ABI_VERSION=2 -Dunix -D__unix -D__unix__ -Werror=implicit-function-declaration -Xclang -nostdsysteminc -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/include/libcxx -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/lib/libcxxabi/include -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/lib/libunwind/include -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/include/compat -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/include -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/include/libc -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/lib/libc/musl/arch/emscripten -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/local/include -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/include/SSE -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/lib/compiler-rt/include -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/cache/wasm/include -DEMSCRIPTEN -fignore-exceptions -c -Xclang -include-pch -Xclang .pch/Qt5NetworkAuth.pch/c++.pch -pipe -O2 -std=c++1z -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -Wextra -Wdate-time -Winconsistent-missing-override -DQT_NO_LINKED_LIST -DQT_NO_FOREACH -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_LINKED_LIST -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_BUILD_NETWORKAUTH_LIB -DQT_BUILDING_QT -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_DEPRECATED_WARNINGS_SINCE=0x060000 -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_NETWORK_LIB -DQT_CORE_LIB -I/mnt/s/qt/qt5/qtnetworkauth/src/oauth -I. -I/mnt/s/qt/build/qtbase/include -I/mnt/s/qt/build/qtbase/include/QtNetworkAuth -I/mnt/s/qt/build/qtbase/include/QtNetworkAuth/5.15.0 -I/mnt/s/qt/build/qtbase/include/QtNetworkAuth/5.15.0/QtNetworkAuth -I/mnt/s/qt/build/qtbase/include/QtCore/5.15.0 -I/mnt/s/qt/build/qtbase/include/QtCore/5.15.0/QtCore -I/mnt/s/qt/build/qtbase/include/QtNetwork -I/mnt/s/qt/build/qtbase/include/QtCore -I.moc -I/mnt/s/qt/qt5/qtbase/mkspecs/wasm-emscripten /mnt/s/qt/qt5/qtnetworkauth/src/oauth/qoauth1signature.cpp -Xclang -isystem/mnt/s/emscripten/emsdk/upstream/emscripten/system/include/SDL -c -o .obj/qoauth1signature.o -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm -disable-lsr' failed (1)
Makefile:3325: recipe for target '.obj/qoauth1signature.o' failed
make[3]: *** [.obj/qoauth1signature.o] Error 1
make[3]: Leaving directory '/mnt/s/qt/build/qtnetworkauth/src/oauth'
Makefile:46: recipe for target 'sub-oauth-make_first-ordered' failed
make[2]: *** [sub-oauth-make_first-ordered] Error 2
make[2]: Leaving directory '/mnt/s/qt/build/qtnetworkauth/src'
Makefile:48: recipe for target 'sub-src-make_first' failed
make[1]: *** [sub-src-make_first] Error 2
make[1]: Leaving directory '/mnt/s/qt/build/qtnetworkauth'
Makefile:112: recipe for target 'module-qtnetworkauth-make_first' failed
make: *** [module-qtnetworkauth-make_first] Error 2

I am compiling for webassembly however this doesn't look like an emscripten issue to me.
Any help would be appretiated.

SGaist

Hi and welcome to devnet,

Followings the Qt webassembly platform notes, it looks like that module is not yet supported.

haiku

Hi SGaist, thanks, that's likely the issue.

I did see in the wiki that it suggests running make module-qtbase module-qtdeclarative [other modules] but I wasn't sure what modules I needed so I just ran make assuming everything would work. I'll be more explicit and report back.

haiku

Ran make with all supported webassemly modules as arguments and everything worked (no errors)
make module-qtbase module-qtdeclarative module-qtquickcontrols2 module-qtwebsockets module-qtsvg module-qtcharts module-qtmqtt

Thanks again @SGaist

divyanshusahu

I followed all the above steps and I got the following error after running the make with all supported modules.

make module-qtbase module-qtdeclarative module-qtquickcontrols2 module-qtwebsockets module-qtsvg module-qtcharts module-qtmqtt

Error:

make: *** No rule to make target 'module-qtmqtt'.  Stop.

SGaist

@divyanshusahu hi and welcome to devnet,

Are you sure that you have that module in your sources ?

divyanshusahu

Silly me, sorry, it is not present.

I build it after removing "module-qtmqtt" and it works.

One more question:
I am compiling my existing QT project using emcmake cmake and it generates the following warnings and error.

Warning:

CMake Warning (dev) at /home/divyanshu/qt/build/qtbase/lib/cmake/Qt5Gui/Qt5Gui_QGifPlugin.cmake:2 (add_library):
  ADD_LIBRARY called with MODULE option but the target platform does not
  support dynamic linking.  Building a STATIC library instead.  This may lead
  to problems.

Error:

CMake Error at /home/divyanshu/qt/build/qtbase/lib/cmake/Qt5Gui/Qt5Gui_QSvgIconPlugin.cmake:8 (find_package):
  Could not find a package configuration file provided by "Qt5Svg" (requested
  version 1.0.0) with any of the following names:

    Qt5SvgConfig.cmake
    qt5svg-config.cmake

Is the warning generation normal or there is an error with my QT build? Can you help me with the above error?

SGaist

Not knowing the options you used, I can't tell.

You also did not say what version of Qt you built.

divyanshusahu

My steps are exactly the same stated above by @haiku .

Qt version 5.15
Emscripten Version: 1.39.8

mkdir qt
cd qt

git clone git://code.qt.io/qt/qt5.git
cd qt5
git checkout 5.15.0
./init-repository --module-subset=default,-qtwebengine

cd ..
mkdir build
cd build

../qt5/configure -xplatform wasm-emscripten -opensource -nomake examples -prefix $PWD/qtbase
make module-qtbase module-qtdeclarative module-qtquickcontrols2 module-qtwebsockets module-qtsvg module-qtcharts

SGaist

Ok, I forgot it was about wasm.

You might need some updates to your cmake project as the wasm build is static IIRC and your application might be using modules that are not (yet) supported by that platform.