Error: ‘ptrdiff_t’ does not name a type

[yacob]

Dear Sir

I have tried to install qt-x11-free-3.3.6 on the new Ubuntu OS (12.04 LTS) (gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3).
The configuration went well but when I tried to run "make" I got the following error message:
....
....
../include/qvaluelist.h:88:13: error: ‘ptrdiff_t’ does not name a type
../include/qvaluelist.h:164:13: error: ‘ptrdiff_t’ does not name a type
....
....

../include/qmap.h:107:13: error: ‘ptrdiff_t’ does not name a type
../include/qmap.h:223:13: error: ‘ptrdiff_t’ does not name a type
.....

make[2]: *** [.obj/release-shared/qapplication_x11.o] Error 1
make[2]: Leaving directory /usr/local/qt/src' make[1]: *** [sub-src] Error 2 make[1]: Leaving directory /usr/local/qt'
make: *** [init] Error 2

Kind regards
Yacob

[AcerExtensa]

It's a common error with relative new libc and... Just add
@#include <stddef.h>@
to files on which does the compiler complains. You may have also troubles with png plugin if you have selected --system-libpng and you have 1,5* libpng... where is an patch on the web... for example "here":http://www.linuxfromscratch.org/patches/downloads/qt/

[yacob]

Dear AcerExtensa

Thank you for your quck reply. Now I could able to pass the first hurdle after including "#include <stddef.h>". I have now some problems with finding "Xext"

r/X11R6/lib -lXext -lX11 -lm -ldl
/usr/bin/ld: cannot find -lXext
collect2: ld returned 1 exit status

Kind regards
Yacob

[AcerExtensa]

install libxext-dev with aptitude