Hi, What kind of RISC-V toolchain are you using? I recall that the RISC-V toolchain provided by Ubuntu is built without libm support. Also I noticed that you have "CFLAGS += -lm " in Make.defs and with CONFIG_LIBM=y that should be removed I think as you try to rebuild math from NuttX sources.
Please try to remove "CFLAGS += -lm " and feedback if that helps. Best regards, Petro нд, 17 вер. 2023 р. о 19:34 <ken.dic...@whidbey.com> пише: > Please forgive the noob question. > > I am porting a Scheme interpreter to riscv64 NuttX as > apps/interpreters/umb-scheme/ but the binary fails to link in libm > functions. > > I could use some help in this. > > Specifically, building on Raspberry Pi 4 Raspian 64 bit: > > Raspian:RasPi4:~/RISCV/NuttX/apps/bin >>> riscv64-linux-gnu-gcc-nm -u > scheme > U acos > U asin > U atan > U atan2 > U ceil > U cos > U exp > U floor > U log > U pow > U sin > U sqrt > U tan > > I am following the Pine64 Start64 recipe, which does yield a bootable > NuttX on VisionFive 2 SoC: > > > > https://nuttx.apache.org/docs/latest/platforms/risc-v/jh7110/boards/star64/index.html > > My nuttx/.config file contains: > > CONFIG_LIBM=y > CONFIG_ARCH_FLOAT_H=y > > The interpreter local make/config files are attached. They should be > unsurprising. > > Perhaps some kind person can help me out with the proper build flags. > > Thanks much! > -KenD [Ken (dot) Dickey (at) Whidbey (dot) COM] > > > > > >
