问题
I am trying to install ruby-qml on Ubuntu 15.10 (Wily).
I had previously checked for prerequisites. There is nothing documented for Linux on the web site. I had checked some usual suspects (build-essential bison openssl libreadline5 libreadline-dev curl git-core zlib1g zlib1g-dev libssl-dev vim libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev git-core subversion autoconf xorg-dev libgl1-mesa-dev libglu1-mesa-dev). Checking/installing libqt5qml5 libqt5quick5 qtdeclarative5-dev qt5-default fixed some earlier problems.
At this point, when running the Gem installer, it stops with an error and the following output:
:#> gem install qml
Building native extensions. This could take a while...
ERROR: Error installing qml:
ERROR: Failed to build gem native extension.
/usr/bin/ruby2.1 extconf.rb
checking for qmake... yes
>>> building libqmlbind...
Project MESSAGE: This project is using private headers and will therefore be tied to this specific Qt module build version.
Project MESSAGE: Running this project against other versions of the Qt modules may crash at any arbitrary point.
Project MESSAGE: This is not a bug, but a result of using Qt internals. You have been warned!
g++ -c -m64 -pipe -O2 -std=c++0x -Wall -W -D_REENTRANT -fPIC -DQMLBIND_LIBRARY -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -Iinclude -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt5/QtQuick -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtQml -isystem /usr/include/x86_64-linux-gnu/qt5/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.4.2 -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.4.2/QtCore -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -I. -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -o api_application.o src/api_application.cpp
g++ -c -m64 -pipe -O2 -std=c++0x -Wall -W -D_REENTRANT -fPIC -DQMLBIND_LIBRARY -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -Iinclude -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt5/QtQuick -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtQml -isystem /usr/include/x86_64-linux-gnu/qt5/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.4.2 -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.4.2/QtCore -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -I. -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -o api_engine.o src/api_engine.cpp
g++ -c -m64 -pipe -O2 -std=c++0x -Wall -W -D_REENTRANT -fPIC -DQMLBIND_LIBRARY -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -Iinclude -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt5/QtQuick -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtQml -isystem /usr/include/x86_64-linux-gnu/qt5/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.4.2 -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.4.2/QtCore -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -I. -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -o api_iterator.o src/api_iterator.cpp
g++ -c -m64 -pipe -O2 -std=c++0x -Wall -W -D_REENTRANT -fPIC -DQMLBIND_LIBRARY -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -Iinclude -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtWidgets -isystem /usr/include/x86_64-linux-gnu/qt5/QtQuick -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtQml -isystem /usr/include/x86_64-linux-gnu/qt5/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.4.2 -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore/5.4.2/QtCore -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -I. -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -o api_value.o src/api_value.cpp
In file included from src/metaobject.h:4:0,
from src/api_engine.cpp:3:
src/exporter.h:5:42: fatal error: private/qmetaobjectbuilder_p.h: No such file or directory
compilation terminated.
Makefile:446: recipe for target 'api_engine.o' failed
make: *** [api_engine.o] Error 1
make: *** Waiting for unfinished jobs....
ERROR: Failed to build libqmlbind
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/bin/ruby2.1
--with-qmake
--without-qmake
--enable-debug
--disable-debug
--enable-clean
--disable-clean
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.1.0/gems/qml-1.0.2 for inspection.
Results logged to /var/lib/gems/2.1.0/extensions/x86_64-linux/2.1.0/qml-1.0.2/gem_make.out
What is wrong here? How can I fix it?
回答1:
I installed qtbase5-private-dev, and then:
Successfully installed qml-1.0.2
来源：https://stackoverflow.com/questions/34791459/installing-ruby-qml-error-failed-to-build-libqmlbind-what-is-missing