[meta-xilinx] cross-compiling
I cross-compiled an application to run on Linux on the Zynq-7020. Trying to execute it gives "No such file or directory" error. # file app_hello.elf app_hello.elf: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 4.4.0, BuildID[sha1]=06498863e79d3eabe670610b2cbb0440272f047e, not stripped I don't have /lib/ld-linux-armhf.so.3, but I do have /lib/ld-linux.so.3. I symlinked ld-linux-armhf.so.3 to ld-linux.so.3 and my application runs fine now. Where did things go wrong? Is my Yocto build not properly creating ld-linux-armhf.so.3? Or is my application cross-compilation using the wrong ld-linux? I'm using Xilinx SDK 2016.2 to cross-compile the Linux application. Thanks for any help. Ed -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
Re: [meta-xilinx] cross-compiling
On 11-10-16 08:51, Edward Wingate wrote: I cross-compiled an application to run on Linux on the Zynq-7020. Trying to execute it gives "No such file or directory" error. # file app_hello.elf app_hello.elf: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 4.4.0, BuildID[sha1]=06498863e79d3eabe670610b2cbb0440272f047e, not stripped I don't have /lib/ld-linux-armhf.so.3, but I do have /lib/ld-linux.so.3. I symlinked ld-linux-armhf.so.3 to ld-linux.so.3 and my application runs fine now. Where did things go wrong? Is my Yocto build not properly creating ld-linux-armhf.so.3? Or is my application cross-compilation using the wrong ld-linux? I'm using Xilinx SDK 2016.2 to cross-compile the Linux application. I suspect one of your toolchains is using hard-float ABI and the other soft-float. This will work fine if you don't exchange any floating-point data. The solution is to use the same toolchain for everything. Don't use the Yocto toolchain for the rootfs and then the Xilinx toolchain for an executable. Kind regards, Mike Looijmans System Expert TOPIC Products Materiaalweg 4, NL-5681 RJ Best Postbus 440, NL-5680 AK Best Telefoon: +31 (0) 499 33 69 79 E-mail: mike.looijm...@topicproducts.com Website: www.topicproducts.com Please consider the environment before printing this e-mail -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
Re: [meta-xilinx] cross-compiling
On Tue, Oct 11, 2016 at 5:17 PM, Mike Looijmans wrote: > On 11-10-16 08:51, Edward Wingate wrote: >> >> I cross-compiled an application to run on Linux on the Zynq-7020. >> Trying to execute it gives "No such file or directory" error. >> >> # file app_hello.elf >> app_hello.elf: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), >> dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for >> GNU/Linux 4.4.0, >> BuildID[sha1]=06498863e79d3eabe670610b2cbb0440272f047e, not stripped >> >> I don't have /lib/ld-linux-armhf.so.3, but I do have >> /lib/ld-linux.so.3. I symlinked ld-linux-armhf.so.3 to ld-linux.so.3 >> and my application runs fine now. >> >> Where did things go wrong? Is my Yocto build not properly creating >> ld-linux-armhf.so.3? Or is my application cross-compilation using the >> wrong ld-linux? I'm using Xilinx SDK 2016.2 to cross-compile the >> Linux application. > > > I suspect one of your toolchains is using hard-float ABI and the other > soft-float. This will work fine if you don't exchange any floating-point > data. Xilinx changed their default toolchain provided by XSDK to arm hard float in a recent version (v2016.1?). As such meta-xilinx also switched (krogoth and newer) to defaulting to hard-float as there was no longer a need to default to soft-fp for compatibility. You can read a bit about it here: https://lists.yoctoproject.org/pipermail/meta-xilinx/2016-February/001466.html > > The solution is to use the same toolchain for everything. Don't use the > Yocto toolchain for the rootfs and then the Xilinx toolchain for an > executable. This is definitely recommended, you can build an "SDK" with Yocto if you need the toolchain for standalone development. Some reference links: http://www.yoctoproject.org/docs/current/ref-manual/ref-manual.html#cross-development-toolchain-generation http://www.yoctoproject.org/docs/current/ref-manual/ref-manual.html#sdk-dev-environment Regards, Nathan > > > > Kind regards, > > Mike Looijmans > System Expert > > TOPIC Products > Materiaalweg 4, NL-5681 RJ Best > Postbus 440, NL-5680 AK Best > Telefoon: +31 (0) 499 33 69 79 > E-mail: mike.looijm...@topicproducts.com > Website: www.topicproducts.com > > Please consider the environment before printing this e-mail > > > > > > > -- > ___ > meta-xilinx mailing list > meta-xilinx@yoctoproject.org > https://lists.yoctoproject.org/listinfo/meta-xilinx -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
Re: [meta-xilinx] cross-compiling
Thanks Nathan and Mike, I just installed the SDK from Yocto and the Linux executables it generates are working fine. On Tue, Oct 11, 2016 at 12:31 AM, Nathan Rossi wrote: > On Tue, Oct 11, 2016 at 5:17 PM, Mike Looijmans > wrote: >> I suspect one of your toolchains is using hard-float ABI and the other >> soft-float. This will work fine if you don't exchange any floating-point >> data. > > Xilinx changed their default toolchain provided by XSDK to arm hard > float in a recent version (v2016.1?). > > As such meta-xilinx also switched (krogoth and newer) to defaulting to > hard-float as there was no longer a need to default to soft-fp for > compatibility. You can read a bit about it here: > > https://lists.yoctoproject.org/pipermail/meta-xilinx/2016-February/001466.html > >> >> The solution is to use the same toolchain for everything. Don't use the >> Yocto toolchain for the rootfs and then the Xilinx toolchain for an >> executable. > > This is definitely recommended, you can build an "SDK" with Yocto if > you need the toolchain for standalone development. > > Some reference links: > http://www.yoctoproject.org/docs/current/ref-manual/ref-manual.html#cross-development-toolchain-generation > http://www.yoctoproject.org/docs/current/ref-manual/ref-manual.html#sdk-dev-environment > -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
