About arkadi

Ok, thanks for the update. As a workaround, I was able to make 32-bit binary and run it in 64-bit Ubuntu but still having native 64-bit one would be preferred. If anybody is interested how to build 32-bit binary in 64-bit Ubuntu, I'll post it here for the record: 1. Install and run arch-test, which will show the architectures supported by the kernel sudo apt install arch-test arch-test arm64 armhf 2. Install gcc-multilib for the second architecture (armhf - which is 32-bit arm) sudo apt install gcc-8-multilib-arm-linux-gnueabihf 3. All other linked libs should be 32-bit as well. Because I use i2c library to talk to the sensor, I had to build 32-bit version of it. I downloaded the source code of libi2c from https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/snapshot/i2c-tools-4.2.tar.gz. Uncompressed and edited Makefile. Note the cross-compiler name and -marm option to produce 32-bit code: CC := /usr/bin/arm-linux-gnueabihf-gcc-8 CFLAGS ?= -O2 -marm BUILD_DYNAMIC_LIB ?= 0 BUILD_STATIC_LIB ?= 1 then build the static i2c library using make. Finally, I compiled and statically linked my code - bsec.c file (again using  the cross-compiler from gcc-multilib and -march option) together with provided bsec_integration.c and the driver bme680.c. Note the -lm and -static options, which will statically link libm and libc: /usr/bin/arm-linux-gnueabihf-gcc-8 -marm -O3 -o bsec bsec.c bsec_integration.c bme680.c -L ../../i2c-tools-4.2/lib -L . -li2c -lalgobsec -lm -static Check the resulting binary, which should run just fine in 64-bit Ubintu kernel: file bsec bsec: ELF 32-bit LSB executable, ARM, EABI5 version 1 (GNU/Linux), statically linked, for GNU/Linux 3.2.0, BuildID[sha1]=0cf8e44276b114a9f271244a7b111a63c12a57f1, not stripped ... View more

I think I'd just provided the compiler that I'm using in my previous post: file /usr/bin/aarch64-linux-gnu-gcc-7 /usr/bin/aarch64-linux-gnu-gcc-7: ELF 64-bit LSB executable, ARM aarch64, version 1 (GNU/Linux), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.7.0, BuildID[sha1]=3a5223b90c905cab7dc44678133d22f44650872f, stripped It's a default gcc compiler that comes with Ubuntu 18.08 LTS (Bionix) 64-bit linux OS for Raspberry Pi 3. Not sure which other commands you want me to provide. It can be downloaded from https://ubuntu.com/download/raspberry-pi ... View more

Well, then why does it produce 32-bit binaries? It is easy to verify, step by step: 1. Download and unzip the file that you provided: unzip BSEC_1.4.8.0_Raspb_x64_Release_20200904.zip 2. Extract binary objects from the static library libalgobsec.a with ar ar x libalgobsec.a 3. Verify the bitness of binary objects cd BSEC_1.4.8.0_Raspb_x64_Release_20200904/algo/normal/bin/RaspberryPi/x64/PiThree_ArmV8 for f in `ls *.o`; do file $f; done Bsec.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped Channel.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped ChannelHub.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped Entity.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped ExpSmoothing.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped ExpSmoothingBsec.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped GasHumidityBaselineTracker.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped GasHumidityPreProcessor.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped HumidityTemperatureCorrector.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped IaqEstimator.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped SensorHeatCompensator.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped SensorStatusTracker.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped Serialization.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped absHum.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped applyScalarFunctionInPlace.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_data.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_do_steps.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_get_configuration.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_get_state.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_get_version.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_init.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_reset_output.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_rtwutil.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_sensor_control.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_set_configuration.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_set_state.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_codegen_update_subscription.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped bsec_interface.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped constructor_bsec.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped convertHumidity.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped crcCcitt2.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped isequal.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped log.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped log10.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped polyval.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped sin.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped sqrt.o: ELF 32-bit LSB relocatable, ARM, EABI5 version 1 (SYSV), not stripped As you see, they all 32-bit binaries (ELF 32-bit)! I suspect that even your hardware is 64-bit (if it is Raspberry PI 3, then for sure it is 64-bit) but your OS is 32-bit. Is it Rasperrian? Just simply run the "file" command on your gcc compiler binary to verify it. Here is what mine shows: file /usr/bin/aarch64-linux-gnu-gcc-7 /usr/bin/aarch64-linux-gnu-gcc-7: ELF 64-bit LSB executable, ARM aarch64, version 1 (GNU/Linux), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.7.0, BuildID[sha1]=3a5223b90c905cab7dc44678133d22f44650872f, stripped As you see, mine is 64-bit compiler (ELF 64-bit LSB executable). PS. For -m64 to work, you may need to install gcc-multilib libraries. ... View more

You are using 32-bit compiler. It is not easy to compile 64-bit binary on 32-bit system but possible using "-m64" option with multilib gcc installed, you will need to have all other libraries 64-bit. It is much easier to compile on the 64-bit system, then you don't need to worry about 64-bit libraries. For more info, see stackoverflow article "How to compile 64-bit binary on 32-bit software". ... View more

Hm... sorry but it's the same 32-bit library...   ... View more