hi
i tried to cross-compile the PowerVR SDK examples using arm-linux-gnueabhi-g++ but i i got the followig error
/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/bin/ld: cannot find -lX11
/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/bin/ld: cannot find -lXau
collect2: ld returned 1 exit status
make: *** […/Linux_armv7hf/ReleaseX11/OGLES2ChameleonMan] Error 1
the command i made
sudo make PLATFORM=Linux_armv7hf X11BUILD=1 X11ROOT=/media/Stockages/rootfs/usr
the ws.mak is
WS_LIBS = -L$(X11ROOT)/lib/arm-linux-gnueabihf -Wl,–rpath-link,$(X11ROOT)/lib/arm-linux-gnueabihf -lX11 -lXau -ldl
WS_INC = $(X11ROOT)/include/X11
where :
/media/Stockages/rootfs/usr/lib/arm-linux-gnueabihf is the directory which contains libX11.so and libXau.so
/media/Stockages/rootfs/usr/include/X11 is a directory which contains a folder called bitmaps
where i am wrng ?
Hi,
For cross-compiling, the make command you’re using and the changes you have made ws.mak seem ok. I’m not sure why it’s failing to find the libraries.
Can you explain the step’s you have followed to install, configure and run your cross-compiler?
Have you checked the permissions of your mounted file system to ensure that the ‘ld’ command can read from those directories?
Have you been able to successfully build on-device by linking against the same X11 libraries?
Regards,
Joe
HI joe,
thank you first for your reply i appreciated.
well the problem why i was not able to find the two library -lX11 -lXau is that the directory /media/Stockages/rootfs/usr/include/X11 was missing the X11 headers files. now i am able to link against X11 libs and headers but its not over yet i got an anther annoying problem that bother me:
arm-linux-gnueabihf-g++ -o …/Linux_armv7hf/ReleaseX11/OGLES2ChameleonMan …/Linux_armv7hf/ReleaseX11/OGLES2ChameleonMan.o …/Linux_armv7hf/ReleaseX11/skyline.o …/Linux_armv7hf/ReleaseX11/Wall_diffuse_baked.o …/Linux_armv7hf/ReleaseX11/Tang_space_BodyMap.o …/Linux_armv7hf/ReleaseX11/Tang_space_LegsMap.o …/Linux_armv7hf/ReleaseX11/Tang_space_BeltMap.o …/Linux_armv7hf/ReleaseX11/FinalChameleonManLegs.o …/Linux_armv7hf/ReleaseX11/FinalChameleonManHeadBody.o …/Linux_armv7hf/ReleaseX11/lamp.o …/Linux_armv7hf/ReleaseX11/ChameleonBelt.o …/Linux_armv7hf/ReleaseX11/SkinnedVertShader.o …/Linux_armv7hf/ReleaseX11/SkinnedFragShader.o …/Linux_armv7hf/ReleaseX11/DefaultVertShader.o …/Linux_armv7hf/ReleaseX11/DefaultFragShader.o …/Linux_armv7hf/ReleaseX11/ChameleonScene.o …/Linux_armv7hf/ReleaseX11/PVRShell.o …/Linux_armv7hf/ReleaseX11/PVRShellAPI.o …/Linux_armv7hf/ReleaseX11/PVRShellOS.o -march=armv7-a -mfloat-abi=hard -L/media/be90ae91-163e-4bd9-bc00-86e1f7afd8ce/usr/lib/arm-linux-gnueabihf -Wl,–rpath-link,/media/be90ae91-163e-4bd9-bc00-86e1f7afd8ce/usr/lib/arm-linux-gnueabihf -lX11 -lXau -ldl -lrt -lGLESv2 -lEGL -L/opt/Imagination/PowerVR/GraphicsSDK/SDK_3.3_R2/Tools/OGLES2/Build/LinuxGeneric/…/Linux_armv7hf/ReleaseX11 -logles2tools -L"/opt/Imagination/PowerVR/GraphicsSDK/SDK_3.3_R2/Builds/Linux/armv7hf/Lib" -Wl,–rpath-link,"/opt/Imagination/PowerVR/GraphicsSDK/SDK_3.3_R2/Builds/Linux/armv7hf/Lib"
/media/Stockages/usr/lib/arm-linux-gnueabihf/libm.a(fraiseexcpt.o): In function feraiseexcept':<br /> (.text+0xbc): undefined reference to_dl_hwcap’
collect2: ld returned 1 exit status
make: *** […/Linux_armv7hf/ReleaseX11/OGLES2ChameleonMan] Error 1
why the reference to `_dl_hwcap’ is not defined??? what type of error is this and how to solve it ?
again the command i used:
sudo make PLATFORM=Linux_armv7hf X11BUILD=1 X11ROOT=/media/Stockages/rootfs/usr
joe said
Have you been able to successfully build on-device by linking against the same X11 libraries?
i did not try to build on-device because the SDK is installed on the linux host machine
Note: the LInuxRaw build was successful using only the commande sudo make PLATFORM=Linux_armv7hf and i got the executable on
/opt/Imagination/PowerVR/GraphicsSDK/SDK_3.3_R2/Examples/Advanced/ChameleonMan/OGLES2/Build/Linux_armv7hf/ReleaseNullWS
Hello,
The error message you posted I believe is an issue with linking to libc for your device. I believe there is a mismatch occurring.
Could you please confirm what directory the following refers to:
-L/media/be90ae91-163e-4bd9-bc00-86e1f7afd8ce/usr/lib/arm-linux-gnueabihf -Wl,–rpath-link,/media/be90ae91-163e-4bd9-bc00-86e1f7afd8ce/usr/lib/arm-linux-gnueabihf
Is this the same rootfs as /media/Stockages/rootfs?
Could you also please try the following commands.
On the host the following will show the default library search paths:
arm-linux-gnueabihf-g++ -print-search-dirs
And on the device itself could you run:
uname -a
This will confirm the arm variant on the platform.
Thanks,
Paul
Hi paul thank you for reply:
-L/media/be90ae91-163e-4bd9-bc00-86e1f7afd8ce/usr/lib/arm-linux-gnueabihf -Wl,–rpath-link,/media/be90ae91-163e-4bd9-bc00-86e1f7afd8ce/usr/lib/arm-linux-gnueabihf
Is this the same rootfs as /media/Stockages/rootfs?
Could you also please try the following commands.
yes its the same rootfs. here is another reproduction of the error i get:
/*************************************************** Error /
arm-linux-gnueabihf-g++ -o …/Linux_armv7hf/ReleaseX11/OGLES2ChameleonMan …/Linux_armv7hf/ReleaseX11/OGLES2ChameleonMan.o …/Linux_armv7hf/ReleaseX11/skyline.o …/Linux_armv7hf/ReleaseX11/Wall_diffuse_baked.o …/Linux_armv7hf/ReleaseX11/Tang_space_BodyMap.o …/Linux_armv7hf/ReleaseX11/Tang_space_LegsMap.o …/Linux_armv7hf/ReleaseX11/Tang_space_BeltMap.o …/Linux_armv7hf/ReleaseX11/FinalChameleonManLegs.o …/Linux_armv7hf/ReleaseX11/FinalChameleonManHeadBody.o …/Linux_armv7hf/ReleaseX11/lamp.o …/Linux_armv7hf/ReleaseX11/ChameleonBelt.o …/Linux_armv7hf/ReleaseX11/SkinnedVertShader.o …/Linux_armv7hf/ReleaseX11/SkinnedFragShader.o …/Linux_armv7hf/ReleaseX11/DefaultVertShader.o …/Linux_armv7hf/ReleaseX11/DefaultFragShader.o …/Linux_armv7hf/ReleaseX11/ChameleonScene.o …/Linux_armv7hf/ReleaseX11/PVRShell.o …/Linux_armv7hf/ReleaseX11/PVRShellAPI.o …/Linux_armv7hf/ReleaseX11/PVRShellOS.o -march=armv7-a -mfloat-abi=hard -L/media/Stockages/rootfs/usr/lib/arm-linux-gnueabihf -Wl,–rpath-link,/media/Stockages/rootfs/usr/lib/arm-linux-gnueabihf -lX11 -lXau -ldl -lrt -lGLESv2 -lEGL -L/opt/Imagination/PowerVR/GraphicsSDK/SDK_3.3_R2/Tools/OGLES2/Build/LinuxGeneric/…/Linux_armv7hf/ReleaseX11 -logles2tools -L"/opt/Imagination/PowerVR/GraphicsSDK/SDK_3.3_R2/Builds/Linux/armv7hf/Lib" -Wl,–rpath-link,"/opt/Imagination/PowerVR/GraphicsSDK/SDK_3.3_R2/Builds/Linux/armv7hf/Lib"
/media/Stockages/rootfs/usr/lib/arm-linux-gnueabihf/libm.a(fraiseexcpt.o): In function feraiseexcept':<br /> (.text+0xbc): undefined reference to_dl_hwcap’
collect2: ld returned 1 exit status
make: *** […/Linux_armv7hf/ReleaseX11/OGLES2ChameleonMan] Error 1
//
/ ws.mak***************************************************/
ifeq “$(X11BUILD)” "1"
WS_LIBS = -L$(X11ROOT)/lib/arm-linux-gnueabihf -Wl,–rpath-link,$(X11ROOT)/lib/arm-linux-gnueabihf -lX11 -lXau -ldl -lrt
WS_INC = $(X11ROOT)/include/X11
/**/
the outputs of the command arm-linux-gnueabihf-g++ -print-search-dirs on host is
//
install: /usr/lib/gcc/arm-linux-gnueabihf/4.6/
programs: =/usr/lib/gcc/arm-linux-gnueabihf/4.6/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/:/usr/lib/gcc/arm-linux-gnueabihf/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/:/usr/lib/gcc/arm-linux-gnueabihf/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/bin/arm-linux-gnueabihf/4.6/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/bin/arm-linux-gnueabihf/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/bin/
libraries: =/usr/lib/gcc/arm-linux-gnueabihf/4.6/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/lib/arm-linux-gnueabihf/4.6/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/lib/arm-linux-gnueabihf/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/lib/…/lib/:/usr/lib/gcc/arm-linux-gnueabihf/4.6/…/…/…/…/arm-linux-gnueabihf/lib/
/***************************************************************************************************************************/
the outputs of uname -a on the device:
Linux mohamed-desktop 3.2.0-1452-omap4 #72-Ubuntu SMP PREEMPT Tue Aug 19 20:46:59 UTC 2014 armv7l armv7l armv7l GNU/Linux
and thank u in advance
Hello,
Could you please try the following.
Firstly on the device:
sudo apt-get install libX11-dev
Then re-mount the file system of the device and make the following changes to the Makefile before building the example:
Add to the variable PLAT_CFLAGS the following:
PLAT_CFLAGS += --sysroot=/media/Stockages/rootfs
And to
PLAT_LINK += --sysroot=/media/Stockages/rootfs
My final PLAT_CFLAGS and PLAT_LINK variables look as follows:
PLAT_LINK = $(LIBDIR_FLAGS) --sysroot=/home/main/rootfs -lEGL -lGLESv2 $(WS_LIBS) -L$(TOOLCHAIN)/lib -march=armv7 -mfloat-abi=hard
PLAT_CFLAGS += -O2 --sysroot=/home/main/rootfs
This will ensure that you only use the on-device version of the libraries.
Thanks,
Paul
WOW that helped tooooo much and the error was solved
thank youu very much Paul
the examples was successfully cross-compiled
