[webkit-help] Linking error with Qt port on Linux in Debug mode

[Benoit Jacob]

Dear List,

I get this linking error when trying to build webkit on my GNU linux system:

$ build-webkit --debug --makeargs='-j5' --qt
...
make[1]: Entering directory
`/home/bjacob/build/WebKit/Debug/WebKit/qt/QtLauncher'
g++ -m64 -o ../../../bin/QtLauncher main.o
-L/home/bjacob/build/WebKit/Debug/lib -L/usr/lib -lQtWebKit -L/usr/lib
-pthread -pthread -L/usr/X11R6/lib64 -pthread -pthread -pthread
-lQtNetwork -lssl -lcrypto -pthread -pthread -pthread -lQtUiTools
-L/home/pierre/chroot/arch64-extra/qt/trunk/src/qt-x11-opensource-src-4.5.3/lib
-lQtXml -pthread -pthread -pthread -pthread -lQtGui -pthread -pthread
-pthread -pthread -lpng -lfreetype -lgobject-2.0 -lSM -lICE -pthread
-pthread -lXrender -lfontconfig -lXext -lX11 -lQtCore -pthread -lz -lm
-pthread -lgthread-2.0 -lrt -lglib-2.0 -ldl -lpthread
/home/bjacob/build/WebKit/Debug/lib/libQtWebKit.so: undefined
reference to `findEntity(char const*, unsigned int)'
/home/bjacob/build/WebKit/Debug/lib/libQtWebKit.so: undefined
reference to `findColor(char const*, unsigned int)'
/home/bjacob/build/WebKit/Debug/lib/libQtWebKit.so: undefined
reference to `findProp(char const*, unsigned int)'
/home/bjacob/build/WebKit/Debug/lib/libQtWebKit.so: undefined
reference to `findDoctypeEntry(char const*, unsigned int)'
/home/bjacob/build/WebKit/Debug/lib/libQtWebKit.so: undefined
reference to `findValue(char const*, unsigned int)'
collect2: ld returned 1 exit status


When I look at these symbols in libQtWebKit.so, they are indeed
present and undefined:

$ nm /home/bjacob/build/WebKit/Debug/lib/libQtWebKit.so -C | egrep '^[ ]*U find'
                 U findEntity(char const*, unsigned int)
                 U findDoctypeEntry(char const*, unsigned int)
                 U findProp(char const*, unsigned int)
                 U findColor(char const*, unsigned int)
                 U findValue(char const*, unsigned int)

Here, U means 'undefined'.

More information:
 Compiler: GCC 4.4.2
 Architecture: x86-64
 Qt version: 4.5.3

Apparently I'm not alone:
http://bugs.gentoo.org/show_bug.cgi?id=287390
but I've not been able to figure what I had to do!

Any idea?

Thanks,
Benoit