Building Qt for imx233-Olinuxino on Ubuntu 14.04 with different gcc versions

[azarubkin]

I'm building Qt with two gcc versions: arm-linux-gnueabi (from repository, 4.7.3) and generated by crosstool-ng (5.1.0).
The latter succeeds while the former fails during configuring with the following messages:

OpenGL auto-detection... ()
arm-linux-gnueabi-g++ -c -pipe -pipe -mcpu=arm926ej-s -marm -mfloat-abi=soft --sysroot=/home/alexandr/armv5/sysroot -O2 -Wall -W -fPIC  -I/home/alexandr/Qt/5.5/Src/qtbase/config.tests/unix/opengles2 -I. -I/home/alexandr/Qt/5.5/Src/qtbase/mkspecs/devices/linux-imx233-g++ -o opengles2.o /home/alexandr/Qt/5.5/Src/qtbase/config.tests/unix/opengles2/opengles2.cpp
arm-linux-gnueabi-g++ -mfloat-abi=soft -Wl,-O1 -o opengles2 opengles2.o   --sysroot=/home/alexandr/armv5/sysroot -lGLESv2 
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__default_rt_sa_restorer@GLIBC_PRIVATE'
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__tfind@GLIBC_PRIVATE'
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__tdelete@GLIBC_PRIVATE'
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__twalk@GLIBC_PRIVATE'
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__default_sa_restorer@GLIBC_PRIVATE'
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__getrlimit@GLIBC_PRIVATE'
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__h_errno@GLIBC_PRIVATE'
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__tsearch@GLIBC_PRIVATE'
/home/alexandr/armv5/sysroot/lib/libpthread.so.0: undefined reference to `__libc_vfork@GLIBC_PRIVATE'
collect2: error: ld returned 1 exit status
make: *** [opengles2] Error 1
OpenGL disabled.
The OpenGL ES 2.0 functionality test failed!
 You might need to modify the include and library search paths by editing
 QMAKE_INCDIR_OPENGL_ES2, QMAKE_LIBDIR_OPENGL_ES2 and QMAKE_LIBS_OPENGL_ES2 in
 /home/alexandr/Qt/5.5/Src/qtbase/mkspecs/devices/linux-imx233-g++.

The configure command was:

../Src/configure -release -device linux-imx233-g++ -device-option CROSS_COMPILE=arm-linux-gnueabi- -prefix $PWD/qtbase -opensource --confirm-license -opengl es2 -v -sysroot ~/armv5/sysroot -nomake examples

The qmake.conf for my device basically defines the CPU:

#
# qmake configuration for linux-imx233-g++ using the arm-linux-gnueabi-g++ crosscompiler
#

include(../common/linux_device_pre.conf)

QMAKE_CFLAGS   += -mcpu=arm926ej-s -marm
QMAKE_CXXFLAGS += $$QMAKE_CFLAGS

include(../common/linux_arm_device_post.conf)

load(qt_config)

Why does gcc 4.7.3 fail? Is it some kind of incompatibility of older versions of gcc?

[SGaist]

Hi,

4.7.3 vs 5.1.0 are a bit too far apart