Hello,
I need to use precompiled library with extension *.a in my project. To specify, I use BME 680 from Bosch and I am trying to compile this code: The BSEC Software | Bosch Sensortec
How should I do this? PlatformIO says that:
bsec_integration.c:(.text.bsec_iot_init+0xaf): undefined reference to bsec_init' bsec_integration.c:(.text.bsec_iot_init+0xea): undefined reference to bsec_set_configuration’
bsec_integration.c:(.text.bsec_iot_init+0x120): undefined reference to bsec_set_state' bsec_integration.c:(.text.bsec_iot_init+0x187): undefined reference to bsec_update_subscription’
.pioenvs/d1_mini_pro/src/bsec_integration.o:(.text.bsec_iot_loop+0x1c): undefined reference to bsec_sensor_control' .pioenvs/d1_mini_pro/src/bsec_integration.o:(.text.bsec_iot_loop+0x2c): undefined reference to bsec_do_steps’
.pioenvs/d1_mini_pro/src/bsec_integration.o:(.text.bsec_iot_loop+0x30): undefined reference to bsec_get_state' .pioenvs/d1_mini_pro/src/bsec_integration.o: In function bsec_iot_loop’:
bsec_integration.c:(.text.bsec_iot_loop+0xa3): undefined reference to `bsec_sensor_control'
bsec_integration.c:(.text.bsec_iot_loop+0x28e): undefined reference to `bsec_do_steps'
bsec_integration.c:(.text.bsec_iot_loop+0x39a): undefined reference to `bsec_get_state'
collect2: error: ld returned 1 exit status
*** [.pioenvs/d1_mini_pro/firmware.elf] Error 1
Modify the linker flags for GCC/G++ to add the library search path and the linker command itself. You can do this by adding a build_flags entry to your platformio.ini file, see platformio documentation. For GCC, you need to at least add -L directory/to/archive and -l*name_of_archive_file*
Did you manage to compile your project with the libalgobsec.a.
I had the same problem, that I had to include the file. But when I hit compile, platformio said: avr/bin/ld: skipping incompatible lib/libalgobsec.a when searching for -lalgobsec
Any help appreciated.
That error message indicates you are using the wrong architecture version of the libalgobsec.a file, you need the AVR(8?) one. Which file in algo\bin\ have you selected exactly and where is stored? What microcontroller are you running on? What’s your exact platformio.ini?
I thought so, but I copied the file from: BSEC_1.4.5.1_Generic_Release_20171214/algo/bin/avr/libalgobsec.a
I want to compile it for Arduino Pro Mini (Atmega328P).
The file is currently stored in the lib folder of the PlatformIO project.
build_flags = -L/Users/philipp/Documents/PlatformIO/Projects/180225-200851-pro8MHzatmega328/lib/ -lalgobsec
That file doesn’t exist. There are 3 sub folders for AVR8_megaAVR, AVR8_XMEGA and AVR32. Which one did you choose? For your ATMega328P you need the file from the megaAVR folder (see here). Also make sure to take the other header files from there.
Ah you are right, sorry I didn’t copy the full path in the post before…
I took all files from BSEC_1.4.5.1_Generic_Release_20171214/algo/bin/avr/AVR8_megaAVR
Do you have any other ideas? Have you already used the library with an atmega?
This doesn’t even work within Arduino IDE for the Arduino Uno. Same “skipping incompatible” thing.
I added -lalgobsec to recipe.c.combine.pattern line in my arduino-1.8.3\hardware\arduino\avr\platform.txt file, copied the lib from algo\bin\avr\AVR8_megaAVR\libalgobsec.a inside arduino-1.8.3\hardware\tools\avr\lib\gcc\avr\4.9.2.
Output:
Archiving built core (caching) in: C:\Users\Maxi\AppData\Local\Temp\arduino_cache_780443\core\core_arduino_avr_nano_cpu_atmega328_e2262a9fc872b629452720cdd8d9a0a6.a
Linking everything together...
"C:\Users\Maxi\Downloads\arduino-1.8.3\hardware\tools\avr/bin/avr-gcc" -w -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p -o "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905/sketch_feb25a.ino.elf" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\sketch\bme680.c.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\sketch\bsec_integration.c.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\sketch\sketch_feb25a.ino.cpp.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\libraries\Wire\Wire.cpp.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\libraries\Wire\utility\twi.c.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905/core\core.a" "-LC:\Users\Maxi\AppData\Local\Temp\arduino_build_233905" -lm -lalgobsec
c:/users/maxi/downloads/arduino-1.8.3/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/../../../../avr/bin/ld.exe: skipping incompatible c:/users/maxi/downloads/arduino-1.8.3/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2\libalgobsec.a when searching for -lalgobsec
c:/users/maxi/downloads/arduino-1.8.3/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/../../../../avr/bin/ld.exe: cannot find -lalgobsec
collect2.exe: error: ld returned 1 exit status
I suggest that you write to creators of this library, as this is not PIO bug . As I demonstrated this worked with their ESP32 archive okay but not with the AVR version, neither in the Arduino IDE nor in PIO with the (modified) procedure given in the PDF file at docs/BST-BME680-AN008-45.pdf page 15.
EDIT: AHA! Using the Arduino IDE I was able to play with the boards. It does build for the ATMega2850! Why not for the ATMega328P? No idea, ask Bosch.
Archiving built core (caching) in: C:\Users\Maxi\AppData\Local\Temp\arduino_cache_780443\core\core_arduino_avr_megaADK_e2262a9fc872b629452720cdd8d9a0a6.a
Linking everything together...
"C:\Users\Maxi\Downloads\arduino-1.8.3\hardware\tools\avr/bin/avr-gcc" -w -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections,--relax -mmcu=atmega2560 -o "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905/sketch_feb25a.ino.elf" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\sketch\bme680.c.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\sketch\bsec_integration.c.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\sketch\sketch_feb25a.ino.cpp.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\libraries\Wire\Wire.cpp.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905\libraries\Wire\utility\twi.c.o" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905/core\core.a" "-LC:\Users\Maxi\AppData\Local\Temp\arduino_build_233905" -lm -lalgobsec
"C:\Users\Maxi\Downloads\arduino-1.8.3\hardware\tools\avr/bin/avr-objcopy" -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905/sketch_feb25a.ino.elf" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905/sketch_feb25a.ino.eep"
"C:\Users\Maxi\Downloads\arduino-1.8.3\hardware\tools\avr/bin/avr-objcopy" -O ihex -R .eeprom "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905/sketch_feb25a.ino.elf" "C:\Users\Maxi\AppData\Local\Temp\arduino_build_233905/sketch_feb25a.ino.hex"
Bibliothek Wire in Version 1.0 im Ordner: C:\Users\Maxi\Downloads\arduino-1.8.3\hardware\arduino\avr\libraries\Wire wird verwendet
Der Sketch verwendet 46492 Bytes (18%) des Programmspeicherplatzes. Das Maximum sind 253952 Bytes.
Globale Variablen verwenden 3062 Bytes (37%) des dynamischen Speichers, 5130 Bytes für lokale Variablen verbleiben. Das Maximum sind 8192 Bytes.
Also works in PIO as expected when using ATMega2850.
