On Aug 18, 2012, at 1:37 PM, Andrew Ross wrote:
> On Fri, Aug 17, 2012 at 05:46:47PM -0700, Alan Irwin wrote:
>> On 2012-08-17 09:59-0700 Alan W. Irwin wrote:
>>
>>> On 2012-08-16 20:37-0700 Jerry wrote:
>>>
>>>> Thanks for looking into this, Andrew.
>>>>
>>>> The results that I reported in my previous e-mail (reviving the thread)
>>>> were with -DNON_TRANSITIVE=OFF. With your fix to 12216, I can now build
>>>> 12216 for Qt. Problem fixed.
>>>>
>>>> When I switch to -DNON_TRANSITIVE=ON, however, the build fails like this:
>>>>
>>>> Linking CXX shared module qt.so
>>>> cd /usr/local/plplot_build_dir/drivers && /opt/local/bin/cmake -E
>>>> cmake_link_script CMakeFiles/qt.dir/link.txt --verbose=1
>>>> /usr/local/adacore-gnat-2011/bin/c++ -bundle
>>>> -Wl,-headerpad_max_install_names -o qt.so CMakeFiles/qt.dir/qt.cpp.o
>>>> ../src/libplplotd.11.0.0.dylib /usr/lib/libm.dylib
>>>> ../bindings/qt_gui/libplplotqtd.0.0.1.dylib ../src/libplplotd.11.0.0.dylib
>>>> -lQtCore
>>>> ld: library not found for -lQtCore
>>>> collect2: ld returned 1 exit status
>>>> make[2]: *** [drivers/qt.so] Error 1
>>>> make[1]: *** [drivers/CMakeFiles/qt.dir/all] Error 2
>>>> make: *** [all] Error 2
>>>
>>> Andrew, just to interject here, I believe the source of the error is
>>> the lack of -L option in the above line to tell the linker where to
>>> find QtCore. QT_LIBRARIES should have that information along with a
>>> bunch of -l options that you do not want for the -DNON_TRANSITIVE=ON
>>> case. So probably the thing to do here is to parse the QT_LIBRARIES
>>> variable to remove the unwanted -l options. Since you are working
>>> through a 3rd party (Jerry) for a platform you are not familiar with
>>> (OS X), I suggest you use the CMake message command to always print
>>> out both QT_LIBRARIES, and its parsed form just in case Jerry finds
>>> any further difficulty with the parsed version.
>>
>> P.S. That comment wasn't quite right. To further clarify, all lists
>> of linking flags like QT_LIBRARIES are further processed by our build
>> system when they are first encountered (in cmake/modules) to transform
>> -L and -l options to construct the equivalent full path name of
>> libraries without disturbing other linking flags. (The absolute
>> pathname form is the preferred one for variables that are used in
>> target_link_libraries even though CMake internally changes that back
>> to the -L and -l form when linking Linux libraries. But the actual
>> resulting linking command may be different on other platforms which is
>> why the absolute pathname form for library locations is preferred for
>> input to target_link_libraries.)
>>
>> In sum, that clarification means for the case where you need to drop
>> some but not all of those libraries, you should parse lists of linking
>> flags such as QT_LIBRARIES to drop all absolute pathames other than
>> the libraries you want. That parsing should leave hyphenated options
>> alone.
>
> I've now done this, parsing QT_LIBRARIES to extract just the QtCore
> library. Jerry, can you try this version? Out of interest, if it
> doesn't work can you report the values of QT_LIBRARIES and QT_LINK_LIBS
> returned by cmake, and also the actual command used to link the Qt driver?
>
> Thanks
>
> Andrew
Andrew,
Sorry. With -DNON_TRANSITIVE=ON, the build failed on SVN 12217. The variables
you wanted to see are:
QT_LIBRARIES =
/opt/local/lib/libQtSvg.dylib;/opt/local/lib/libQtGui.dylib;/opt/local/lib/libQtXml.dylib;/opt/local/lib/libQtCore.dylib
QT_LINK_LIBS = /opt/local/lib/libQtCore.dylib
Here is the error output and the few lines before it. Does this contain the
link command you need to see?
Scanning dependencies of target qt
make -f drivers/CMakeFiles/qt.dir/build.make drivers/CMakeFiles/qt.dir/build
/opt/local/bin/cmake -E cmake_progress_report
/usr/local/plplot_build_dir/CMakeFiles 42
[ 31%] Building CXX object drivers/CMakeFiles/qt.dir/qt.cpp.o
cd /usr/local/plplot_build_dir/drivers && /usr/local/adacore-gnat-2011/bin/c++
-Dqt_EXPORTS -DHAVE_CONFIG_H -fPIC
-I/Users/jerrybauck/Documents/Programs/Ada/Code/Bindings/PLplot/plplot_svn/plplot/include
-I/Users/jerrybauck/Documents/Programs/Ada/Code/Bindings/PLplot/plplot_svn/plplot/lib/qsastime
-I/Users/jerrybauck/Documents/Programs/Ada/Code/Bindings/PLplot/plplot_svn/plplot/lib/nistcd
-I/usr/local/plplot_build_dir -I/usr/local/plplot_build_dir/include
-I/opt/local/include/QtDesigner -I/opt/local/include/QtDeclarative
-I/opt/local/include/QtScriptTools -I/opt/local/include/QtDBus
-I/opt/local/include/QtDesigner -I/opt/local/include/QtXml
-I/opt/local/include/QtSql -I/opt/local/include/QtOpenGL
-I/opt/local/include/QtMultimedia -I/opt/local/include/QtNetwork
-I/opt/local/include/QtXmlPatterns -I/opt/local/include/QtWebKit
-I/opt/local/include/QtHelp -I/opt/local/include/QtUiTools
-I/opt/local/include/QtTest -I/opt/local/include/QtScript
-I/opt/local/include/QtSvg -I/opt/local/include/Qt3Support
-I/opt/local/include/QtGui -I/opt/local/include/QtCore
-I/opt/local/share/qt4/mkspecs/default -I/opt/local/include
-I/opt/local/include/QtCore -DUSINGDLL -o CMakeFiles/qt.dir/qt.cpp.o -c
/Users/jerrybauck/Documents/Programs/Ada/Code/Bindings/PLplot/plplot_svn/plplot/drivers/qt.cpp
Linking CXX shared module qt.so
cd /usr/local/plplot_build_dir/drivers && /opt/local/bin/cmake -E
cmake_link_script CMakeFiles/qt.dir/link.txt --verbose=1
/usr/local/adacore-gnat-2011/bin/c++ -bundle -Wl,-headerpad_max_install_names
-o qt.so CMakeFiles/qt.dir/qt.cpp.o ../src/libplplotd.11.0.0.dylib
/usr/lib/libm.dylib ../bindings/qt_gui/libplplotqtd.0.0.1.dylib
../src/libplplotd.11.0.0.dylib /opt/local/lib/libQtCore.dylib
Undefined symbols for architecture x86_64:
"QWidget::move(QPoint const&)", referenced from:
QWidget::move(int, int) in qt.cpp.o
"QWidget::resize(QSize const&)", referenced from:
QWidget::resize(int, int) in qt.cpp.o
"QApplication::QApplication(int&, char**, bool, int)", referenced from:
initQtApp(bool) in qt.cpp.o
"QSvgGenerator::size() const", referenced from:
plD_eop_svgqt(PLStream*) in qt.cpp.o
"QPicture::QPicture(int)", referenced from:
plD_init_qtwidget(PLStream*) in qt.cpp.o
plD_init_extqt(PLStream*) in qt.cpp.o
"QPainter::QPainter(QPaintDevice*)", referenced from:
plD_init_qtwidget(PLStream*) in qt.cpp.o
plD_init_extqt(PLStream*) in qt.cpp.o
"QWidget::setWindowTitle(QString const&)", referenced from:
plD_init_qtwidget(PLStream*) in qt.cpp.o
"QPainter::~QPainter()", referenced from:
plD_init_qtwidget(PLStream*) in qt.cpp.o
plD_init_extqt(PLStream*) in qt.cpp.o
"QPicture::~QPicture()", referenced from:
plD_init_qtwidget(PLStream*) in qt.cpp.o
plD_init_extqt(PLStream*) in qt.cpp.o
"QWidget::raise()", referenced from:
plD_eop_qtwidget(PLStream*) in qt.cpp.o
"QImage::scanLine(int)", referenced from:
plD_init_memqt(PLStream*) in qt.cpp.o
plD_eop_memqt(PLStream*) in qt.cpp.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
make[2]: *** [drivers/qt.so] Error 1
make[1]: *** [drivers/CMakeFiles/qt.dir/all] Error 2
make: *** [all] Error 2
With With -DNON_TRANSITIVE=OFF, the variables QT_LIBRARIES and do not appear in
the cmake output, and the build succeeds.
Jerry
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