Benjamin,
i noticed you build Open MPI with plain gcc. is gcc a cross compiler ? if not, you have to tell configure to use the cross compilers (and cross assembler and linker too) for example configure CC=crosscompiler ... you might be able to achieve this with standard gcc and the right -march flag for example configure CFLAGS=-march=riscv64 Cheers, Gilles ----- Original Message ----- Here's my config.log. Recompiling now with those options. Ben
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