Dear list
I have an SDR application with Qt developed under Linux (Fedora/ubuntu). It
does run under windows (vista/w7) using mingw/Qt.
I am preparing a windows distribution with - as much as possible -
statically bound libraries
I installed Fedora 17 and the - excellent - cross compilation tools for
mingw64. It was surprisingly simple to
generate an executable using dynamically bound libs, however, when trying
to create an executable with static binding
for the most important (i.e. QtGui etc) libs, there are linking problems:
apparently the references from the Qt libs to some windows libs
cannot be resolved.
It seems I have to specify some additional libs to be used in the linking
process, but I am completely lost.
This is the result of the linkage step:
x86_64-w64-mingw32-g++ -static -Wl,-s -Wl,-subsystem,console -mthreads -o
release/spectrum-viewer.exe object_script.spectrum-viewer.Release
-L'/usr/x86_64-w64-mingw32/sys-root/mingw/lib'
/home/jan/cross-compiling/dll_64/libfftw3-3.lib
/home/jan/cross-compiling/qwt-5.2.2/lib/libqwt.a -lole32 -lwinmm -lstdc++
-lusb-1.0 -lQtGui4 -lQtCore4
/usr/x86_64-w64-mingw32/sys-root/mingw/lib/libQtGui4.a(qapplication.o):(.text+0x1824):
undefined reference to `__imp_CoCreateGuid'
/usr/x86_64-w64-mingw32/sys-root/mingw/lib/libQtGui4.a(qapplication.o):(.text+0x1849):
undefined reference to `__imp_StringFromGUID2'
/usr/lib64/gcc/x86_64-w64-mingw32/4.7.0/../../../../x86_64-w64-mingw32/bin/ld:
/usr/x86_64-w64-mingw32/sys-root/mingw/lib/libQtGui4.a(qapplication.o): bad
reloc address 0x0 in section `.data'
/usr/lib64/gcc/x86_64-w64-mingw32/4.7.0/../../../../x86_64-w64-mingw32/bin/ld:
final link failed: Invalid operation
collect2: error: ld returned 1 exit status
make[1]: *** [release/spectrum-viewer.exe] Error 1
When I add in the makefile -lole32 at the end of the link command line,
these specific references disappear and some new ones do appear:
make -f Makefile.Release
make[1]: Entering directory
`/home/jan/cross-compiling/jsdr-3.04/spectrum-viewer'
x86_64-w64-mingw32-g++ -static -Wl,-s -Wl,-subsystem,console -mthreads -o
release/spectrum-viewer.exe object_script.spectrum-viewer.Release
-L'/usr/x86_64-w64-mingw32/sys-root/mingw/lib'
/home/jan/cross-compiling/dll_64/libfftw3-3.lib
/home/jan/cross-compiling/qwt-5.2.2/lib/libqwt.a -lole32 -lwinmm -lstdc++
-lusb-1.0 -lQtGui4 -lQtCore4 -lole32
/usr/x86_64-w64-mingw32/sys-root/mingw/lib/libQtGui4.a(qfont.o):(.text+0xc1b):
undefined reference to `__imp_GetDeviceCaps'
/usr/x86_64-w64-mingw32/sys-root/mingw/lib/libQtGui4.a(qfont.o):(.text+0xc5b):
undefined reference to `__imp_GetDeviceCaps'
/usr/lib64/gcc/x86_64-w64-mingw32/4.7.0/../../../../x86_64-w64-mingw32/bin/ld:
/usr/x86_64-w64-mingw32/sys-root/mingw/lib/libQtGui4.a(qfont.o): bad reloc
address 0x0 in section `.data'
/usr/lib64/gcc/x86_64-w64-mingw32/4.7.0/../../../../x86_64-w64-mingw32/bin/ld:
final link failed: Invalid operation
collect2: error: ld returned 1 exit status
make[1]: *** [release/spectrum-viewer.exe] Error 1
make[1]: Leaving directory
`/home/jan/cross-compiling/jsdr-3.04/spectrum-viewer'
make: *** [release] Error 2
No idea where to find GetDeviceCaps, and no idea how to specify the ".pro"
file for Qt such that it includes the libraries needed in the right order
any help is greatly appreciated
best
--
Jan van Katwijk
+31 (0)15 3698980
+31 (0) 628260355
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