can't use BSEC2 with esp32c3

[Nuliel]

Hello,
I'm on ubuntu 22.04. I try to use BSEC2 lib on arduino IDE. So I followed the informations in README.md, but I'm stuck at compilation. By default, there are many errors (functions not found) because lib is not found. So I modified platform.txt like said on https://github.com/BoschSensortec/BSEC-Arduino-library#installation-and-getting-started to have
compiler.c.elf.extra_flags=-libalgobsec
but I have this error

/home/nuliel/.arduino15/packages/esp32/tools/riscv32-esp-elf-gcc/esp-2021r2-patch5-8.4.0/bin/../lib/gcc/riscv32-esp-elf/8.4.0/../../../../riscv32-esp-elf/bin/ld: cannot find -libalgobsec
collect2: error: ld returned 1 exit status

I can see the lib libalgobsec.a in ~/Arduino/libraries/Bosch-BSEC2-Library-1.7.2502/src/esp32c3 .
What should I do to be able to compile the basic example?
Sincerely,
Nuliel