OpenGL ES2. Cross-compile for Beaglebone Black using OS Debian when built QT5.7.0

jastmc

Well. I haven't succeeded yet but to install OpenGL on BBB there is a guide here.

small_bird

You need to cross-compile mesa-12(a kind of implement for opengl es) and then link the headers and the libraries generated to Qt compiling.

Dang Vu

thanks! i'am try and anoucement late!

Dang Vu

@small_bird you can give me link about that? i was try Mesa and Mali but it's not success ( or i wrong some step) i really need a tutorial! thanks

small_bird

@Dang-Vu Of course, http://www.360doc.com/content/15/0108/18/5268588_439214065.shtml. It is the web site in China. Can you see that?

Dang Vu

@small_bird Hi sir! i built Mesa for arm with configure

./configure --prefix /usr/local/Mesa --target=arm-linux --host=arm-linux --enable-gles2 --enable-gles1 --enable-glx --enable-egl --disable-dri3 --enable-shared-glppi --with-egl-platforms=x11 --with-dri-driver=swrast CROSS_COMPILE=arm-linux-gnueabihf-

and install successed!
in linux-beagleboard-g++ qmake.conf i writen

#
# qmake configuration for the BeagleBoard and BeagleBoard xM boards
# http://beagleboard.org/

MAKEFILE_GENERATOR      = UNIX
CONFIG                 += incremental
QMAKE_INCREMENTAL_STYLE = sublib

include(../../common/linux.conf)
include(../../common/gcc-base-unix.conf)
include(../../common/g++-unix.conf)

load(device_config)

QT_QPA_DEFAULT_PLATFORM = eglfs

# modifications to g++.conf
QMAKE_CC                = $${CROSS_COMPILE}gcc
QMAKE_CXX               = $${CROSS_COMPILE}g++
QMAKE_LINK              = $${QMAKE_CXX}
QMAKE_LINK_SHLIB        = $${QMAKE_CXX}

# modifications to linux.conf
QMAKE_AR                = $${CROSS_COMPILE}ar cqs
QMAKE_OBJCOPY           = $${CROSS_COMPILE}objcopy
QMAKE_NM                = $${CROSS_COMPILE}nm -P
QMAKE_STRIP             = $${CROSS_COMPILE}strip

COMPILER_FLAGS          = -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mthumb

#modifications to gcc-base.conf
QMAKE_CFLAGS           += $${COMPILER_FLAGS}
QMAKE_CXXFLAGS         += $${COMPILER_FLAGS}
QMAKE_CXXFLAGS_RELEASE += -O3

QMAKE_LIBS             += -lrt -lpthread -ldl

# Extra stuff (OpenGL, DirectFB, ...)
QMAKE_INCDIR_EGL        =/usr/local/Mesa/include/EGL
QMAKE_LIBDIR_EGL        =/usr/local/Mesa/lib
QMAKE_INCDIR_OPENGL_ES2 = $${QMAKE_INCDIR_EGL}
QMAKE_LIBDIR_OPENGL_ES2 = $${QMAKE_LIBDIR_EGL}
QMAKE_INCDIR_OPENVG     = $${QMAKE_INCDIR_EGL}
QMAKE_LIBDIR_OPENVG     = $${QMAKE_LIBDIR_EGL}

QMAKE_LIBS_EGL          = -lEGL -lIMGegl -lsrv_um
QMAKE_LIBS_OPENGL_ES2   = -lGLESv2 $${QMAKE_LIBS_EGL}
QMAKE_LIBS_OPENVG       = -lOpenVG $${QMAKE_LIBS_EGL}

DISTRO_OPTS += hard-float

# No need for any special EGL device integration.
# Prioritize the default, compiled-in integration over any plugins.
EGLFS_DEVICE_INTEGRATION = none

include(../common/linux_arm_device_post.conf)

load(qt_config)

but i still have an error

/usr/local/Mesa/lib/libGLESv2.so: file not recognized: File format not recognized
collect2: error: ld returned 1 exit status
Makefile:90: recipe for target 'opengles2' failed
make: *** [opengles2] Error 1
OpenGL ES 2.0 disabled.
The OpenGL ES 2.0 functionality test failed!

what can i do to built QT for beaglebone! i really- really need a tutorial! thanks! hix...

jsulm

@Dang-Vu What does

file /usr/local/Mesa/lib/libGLESv2.so

say?

Dang Vu

@jsulm Dir Sir! i make and install Mesa in here! i built Mesa with linaro toolchains(arm- linux-gnueabihf) !
i think

QMAKE_LIBDIR_EGL        =/usr/local/Mesa/lib

i right!? i can see libGLESv2.so in that(/usr/local/Mesa/lib)! but it not work when i configure QT with -opengl es2. you nees a that file? i cant send it for you!

jsulm

@Dang-Vu Can you please execute this command in a shell:

file /usr/local/Mesa/lib/libGLESv2.so

and post its output here?

This message:

/usr/local/Mesa/lib/libGLESv2.so: file not recognized: File format not recognized

means that the library has a wrong format. That's why I want to see the output of that command: it will tell for which CPU architecture it was built.

Dang Vu

@jsulm sorry Sir! my mistake, file /usr/local/Mesa/lib/libGLESv2.so.2.0.0 it 's tell me i only use for x86-linux but not for arm! well, while i configure Mesa

./configure --prefix /usr/local/Mesa --target=arm-linux --host=arm-linux --enable-gles2 --enable-gles1 --enable-glx --enable-egl --disable-dri3 --enable-shared-glppi --with-egl-platforms=x11 --with-dri-driver=swrast CROSS_COMPILE=arm-linux-gnueabihf-

what is step i wrong sir? i thinks i successed to built Mesa3d for Arm but it's not true! you can fix it's, Sir?

jsulm

@Dang-Vu How did you build Mesa for ARM?

Dang Vu

@jsulm i download Mesa3d from https://mesa.freedesktop.org/archive/13.0.1/mesa-13.0.1.tar.gz , in linux host( ubuntu16.04) i install linaro toolchains in terminal

$ sudo apt-get install gcc-arm-linux-gnueabi
$ sudo apt-get install g++-arm-linux-gnueabi
$ sudo apt-get install gcc-arm-linux-gnueabihf
$ sudo apt-get install g++-arm-linux-gnueabihf

and i configure Mesa below:

./configure --prefix /usr/local/Mesa --target=arm-linux --host=arm-linux --enable-gles2 --enable-gles1 --enable-glx --enable-egl --disable-dri3 --enable-shared-glppi --with-egl-platforms=x11 --with-dri-driver=swrast CROSS_COMPILE=arm-linux-gnueabihf-

i make and install succsed in /usr/local/Mesa

Laksono

@Dang-Vu do you have finished with your problem?
i have same problem with u...