-mabi=ABI-string . Specify integer and floating-point calling convention. ABI-string contains two parts: the size of integer types and the registers used for floating-point types. For example -march=rv64ifd -mabi=lp64d means that long and pointers are 64-bit (implicitly defining int to be...
For now, we always compile files with -mabi option by using soft-fp ABI. But there are some files use the header which in toolchain, like unistd.h, stdint.h and so on. Finally, these header files include other header files which existing depend on ABI su