Install qt 5.6.1 x86 in platform CentOS7.0 x64

fighter

HI,
I have downloaded qt-everywhere-opensource-src-5.6.1.tar.gz, and want to
install qt 5.6.1 x86 in platform CentOS7.0 x64. Where can I find the refrence document
?

Thanks

jsulm

@fighter Do you want to compile Qt by yourself? I'm asking because you downloaded Qt source code.
Also, if you want to use Qt 5.6 you should use 5.6.2 (http://download.qt.io/official_releases/qt/5.6/5.6.2/qt-opensource-linux-x64-5.6.2.run).
If you need x86 32bit build then you will need to build it by yourself: http://doc.qt.io/qt-5/build-sources.html

fighter

@jsulm Thank you for your reply.
Yes. I wanted to find qt 5.6.1 x86 installation packages, but failed. So I have to download
qt 5.6.1 source and compile qt 5.6.1 x86 source.

The reason of select 5.6.1 is my Windows project use 5.6.1 x86 32bit. Now I want to transplant Windows project to Linux project, so I select 5.6.1.

jsulm

@fighter There shouldn't be any problems if you use 5.6.2 instead of 5.6.1. You could even have less problems, as it has more bugs fixed :-)

fighter

@jsulm Thank you. I will read http://doc.qt.io/qt-5/build-sources.html.

fighter

After I installed gcc x86 32bit

yum install libgcc-4.8.5-11.el7.i686
yum install libstdc++-4.8.5-11.el7.i686
yum install glibc-devel.i686

I execute configure command:
../qt-source/configure -prefix /opt/Qt5.6.1 -platform linux-g++-32
It works well.

But when I executed gmake, the following error occurs:

/usr/include/openssl/opensslconf.h:13:30: fatal error: opensslconf-i386.h: No such file or directory
#include "opensslconf-i386.h"
^
compilation terminated.

How can I get rid of it?

Thanks

fighter

Hi,

After I execute "yum install openssl-devel.i686",

/usr/include/openssl/opensslconf.h:13:30: fatal error: opensslconf-i386.h: No such file or directory

the above error message have been got rid of.

execute gmake command again, the following error occured:

cd textureandlight/ && ( test -e Makefile || /home/fighter/qt-build/qtbase/bin/qmake /home/fighter/qt-source/qtcanvas3d/examples/canvas3d/textureandlight/textureandlight.pro -o Makefile ) && gmake -f Makefile
Project ERROR: Unknown module(s) in QT: quick
gmake[3]: Entering directory /home/fighter/qt-build/qtcanvas3d/src/imports' gmake[3]: Nothing to be done for first'.
gmake[3]: Leaving directory /home/fighter/qt-build/qtcanvas3d/src/imports' gmake[2]: Leaving directory /home/fighter/qt-build/qtcanvas3d/src'
cd examples/ && ( test -e Makefile || /home/fighter/qt-build/qtbase/bin/qmake /home/fighter/qt-source/qtcanvas3d/examples/examples.pro -o Makefile ) && gmake -f Makefile
gmake[2]: Entering directory /home/fighter/qt-build/qtcanvas3d/examples' cd canvas3d/ && ( test -e Makefile || /home/fighter/qt-build/qtbase/bin/qmake /home/fighter/qt-source/qtcanvas3d/examples/canvas3d/canvas3d.pro -o Makefile ) && gmake -f Makefile gmake[3]: Entering directory /home/fighter/qt-build/qtcanvas3d/examples/canvas3d'
cd textureandlight/ && ( test -e Makefile || /home/fighter/qt-build/qtbase/bin/qmake /home/fighter/qt-source/qtcanvas3d/examples/canvas3d/textureandlight/textureandlight.pro -o Makefile ) && gmake -f Makefile
Project ERROR: Unknown module(s) in QT: quick
gmake[3]: *** [sub-textureandlight-make_first] Error 3
gmake[3]: Leaving directory /home/fighter/qt-build/qtcanvas3d/examples/canvas3d' gmake[2]: *** [sub-canvas3d-make_first] Error 2 gmake[2]: Leaving directory /home/fighter/qt-build/qtcanvas3d/examples'
gmake[1]: *** [sub-examples-make_first] Error 2
gmake[1]: Leaving directory `/home/fighter/qt-build/qtcanvas3d'
gmake: *** [module-qtcanvas3d-make_first] Error 2

How should I do? Any help will be very appreciated.

Thanks

jsulm

@fighter You can disable the build of all the examples (you can build them later if needed).
Add -no-compile-examples parameter to the configure call.

fighter

Thank you for your help. Now I add -no-compile-examples parameter to the configure call, and run gmake command again. Command gmake is executing.

fighter

gmake executed normally. But qt 32bit header files cannot find in the disk, instead of 64bit header files have been found(for example, qconfig-32.h did not exist in the disk, instead qconfig-64.h was found in the disk. )I don't know the reason. Can anyone help me?
Thank you. The following is my installation steps:

yum install libgcc-4.8.5-11.el7.i686
yum install libstdc++-4.8.5-11.el7.i686
yum install glibc-devel.i686
yum install openssl-devel.i686
../qt-source/configure -prefix /opt/Qt5.6.1 -platform linux-g++-32 -no-compile-examples
gmake
gmake install

SGaist

Hi and welcome to devnet,

@fighter said in Install qt 5.6.1 x86 in platform CentOS7.0 x64:

The reason of select 5.6.1 is my Windows project use 5.6.1 x86 32bit. Now I want to transplant Windows project to Linux project, so I select 5.6.1.

Out of curiosity, is it mandatory to build your application for 32bit on Linux ? The fact that you used a 32bit Qt on Windows doesn't make it mandatory to also build your application in 32bit on other platforms.

fighter

@SGaist Thank you for your reply.
In fact my application have 32bit and 64bit version in Windows. Windows QT version is
qt_5.6.1-1_x86, qt_5.6.2_x64.
So in Linux I also want 32bit and 64bit version.

jsulm

@fighter You can check whether built Qt libraries are 32bit or 64 bit like this (in a terminal):

$ file PATH_TO_QT/lib/libQt5Core.so

If libQt5Core.so is a symbolic link then just use the file it points to.

fighter

@jsulm Thank you for your reply.

[root@localhost ~]# find / -name "libQt5Core.so"
/home/fighter/qt-build/qtbase/lib/libQt5Core.so
/usr/lib64/libQt5Core.so
/opt/Qt5.6.1/lib/libQt5Core.so

[root@localhost ~]# file /usr/lib64/libQt5Core.so.5.6.1
/usr/lib64/libQt5Core.so.5.6.1: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), BuildID[sha1]=b148d33ba6c8e59e0a1 61ff2a0c2af35ee42ad6c, stripped

[root@localhost ~]# file /opt/Qt5.6.1/lib/libQt5Core.so.5.6.1
/opt/Qt5.6.1/lib/libQt5Core.so.5.6.1: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), BuildID[sha1]=2434bdcd 1cc892d42e5ff1ba772a48237a8a3e66, stripped

jsulm

@fighter said in Install qt 5.6.1 x86 in platform CentOS7.0 x64:

/opt/Qt5.6.1/lib/libQt5Core.so.5.6.1

is a 32bit binary

fighter

@jsulm Yes. /opt/Qt5.6.1/lib/libQt5Core.so.5.6.1 is 32bit. But it is strange that qconfig-32.h
did not exist in the disk, instead qconfig-64.h was found in the disk.

jsulm

@fighter said in Install qt 5.6.1 x86 in platform CentOS7.0 x64:

qconfig-32.h

The file is actually called qconfig.h

fighter

@jsulm said in Install qt 5.6.1 x86 in platform CentOS7.0 x64:

qconfig.h
The content of qconfig.h have qconfig-32.h and qconfig-64.h. Please look at the following:

[root@localhost ~]# ls -l /usr/include/QtCore/qconfig.h
lrwxrwxrwx. 1 root root 18 Jul 21 17:01 /usr/include/QtCore/qconfig.h -> qconfig-multilib.h
[root@localhost ~]# cat /usr/include/QtCore/qconfig-multilib.h
/* qconfig.h */
/* This file is here to prevent a file conflict on multiarch systems.  A
 * conflict will occur because qconfig.h has arch-specific definitions.
 *
 * DO NOT INCLUDE THE NEW FILE DIRECTLY -- ALWAYS INCLUDE THIS ONE INSTEAD. */

#ifndef QCONFIG_MULTILIB_H
#define QCONFIG_MULTILIB_H
#include <bits/wordsize.h>

#if __WORDSIZE == 32
#include "QtCore/qconfig-32.h"
#elif __WORDSIZE == 64
#include "QtCore/qconfig-64.h"
#else
#error "unexpected value for __WORDSIZE macro"
#endif

#endif

jsulm

@fighter said in Install qt 5.6.1 x86 in platform CentOS7.0 x64:

/usr/include/QtCore/qconfig-multilib.h

This header file is not from your own build which is in /opt/Qt5.6.1
Same for /usr/include/QtCore/qconfig.h

fighter

@jsulm
You mean I should use my own build header file in /opt/Qt5.6.1?

The file /usr/include /QtCore/qconfig.h is a link to qconfig-multilib.h.
The size of /usr/include /QtCore/qconfig-multilib.h is not same with /opt/Qt5.6.1/include/QtCore/qconfig.h.
[root@localhost ~]# ls -l /opt/Qt5.6.1/include/QtCore/qconfig.h
-rw-r--r--. 1 root root 4339 Jul 25 16:41 /opt/Qt5.6.1/include/QtCore/qconfig.h
[root@localhost ~]# ls -l /usr/include/QtCore/qconfig-multilib.h
-rw-r--r--. 1 root root 501 Nov 5 2016 /usr/include/QtCore/qconfig-multilib.h

Install qt 5.6.1 x86 in platform CentOS7.0 x64

After I installed gcc x86 32bit

yum install libgcc-4.8.5-11.el7.i686 yum install libstdc++-4.8.5-11.el7.i686 yum install glibc-devel.i686

But when I executed gmake, the following error occurs:

/usr/include/openssl/opensslconf.h:13:30: fatal error: opensslconf-i386.h: No such file or directory #include "opensslconf-i386.h" ^ compilation terminated.

yum install libgcc-4.8.5-11.el7.i686
yum install libstdc++-4.8.5-11.el7.i686
yum install glibc-devel.i686

/usr/include/openssl/opensslconf.h:13:30: fatal error: opensslconf-i386.h: No such file or directory
#include "opensslconf-i386.h"
^
compilation terminated.