I've downloaded the source for QT 5.6.0 and I'm attempting to compile/install it on a Cygwin installation for Windows.
The Cygwin build already has Qt4 and Qt3 libraries installed. Trying to upgrade so I can install the latest QtCreator suite.
Here is my Cygwin version via uname -a:
CYGWIN_NT-10.0 J_Mick-Windoze 2.5.1(0.297/5/3) 2016-04-21 22:14 x86_64 Cygwin
When I try to compile QT 5.6.1 via running ./configure -platform cygwin-g++ -prefix $PWD/qtbase -opensource -nomake tests I get the following error:
Running configuration tests (phase 1)...
Done running configuration tests.
Creating qmake...
.In file included from /home/JasonMick/Install_Stuff/qt-everywhere-opensource-src-5.6.0/qtbase/include/QtCore/5.6.0/QtCore/private/qcore_unix_p.h:1:0,
from /home/JasonMick/Install_Stuff/qt-everywhere-opensource-src-5.6.0/qtbase/src/corelib/global/qglobal.cpp:90:
/home/JasonMick/Install_Stuff/qt-everywhere-opensource-src-5.6.0/qtbase/src/corelib/kernel/qcore_unix_p.h: In function ‘key_t qt_safe_ftok(const QByteArray&, int)’:
/home/JasonMick/Install_Stuff/qt-everywhere-opensource-src-5.6.0/qtbase/src/corelib/kernel/qcore_unix_p.h:333:12: error: ‘::ftok’ has not been declared
return ::ftok(filename.constData(), qHash(filename, proj_id));
^
make: *** [qglobal.o] Error 1
Now clearly there is support for cygwin in the QT project as grepping inside configure I see the platform:
PLATFORM=cygwin-g++
...is defined. Doing some reading I read that ftok is a part of the IPC group of shared memory functions. One link regarding a similar error with a different app suggested linking in -lcygwin. I successfully added this to the L_FLAGS variable in the configure file, but it's still giving the same error, even when I specify the Cygwin as the platform via the -platform flag.
I would appreciate any advice as to how to get rid of this issue -- which I believe is attributable to some sort of missing IPC library error.