编译报错

[Huckies]

/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: 找不到 -lprintfloat
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-closer.o): in function `.L0 ':
closer.c:(.text._close_r+0x12): 警告：_close is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-fstatr.o): in function `.L0 ':
fstatr.c:(.text._fstat_r+0x14): 警告：_fstat is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-isattyr.o): in function `.L0 ':
isattyr.c:(.text._isatty_r+0x12): 警告：_isatty is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-lseekr.o): in function `.L0 ':
lseekr.c:(.text._lseek_r+0x16): 警告：_lseek is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-readr.o): in function `.L0 ':
readr.c:(.text._read_r+0x16): 警告：_read is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-writer.o): in function `.L0 ':
writer.c:(.text._write_r+0x16): 警告：_write is not implemented and will always fail
collect2: error: ld returned 1 exit status
make[2]: *** [ch582-ninja.elf] Error 1
make[1]: *** [CMakeFiles/ch582-ninja.elf.dir/all] Error 2
make: *** [all] Error 2

https://blog.csdn.net/feizaopaoxyz/article/details/116451549与这篇文章中提到的错误类似，但不知如何解决，请指教。

[Huckies]

我使用的是cmake -G"Eclipse CDT4 - Unix Makefiles"，cmake阶段和make的编译阶段都正常，错误发生在链接阶段

[dreamcmi]

/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: 找不到 -lprintfloat
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-closer.o): in function `.L0 ':
closer.c:(.text._close_r+0x12): 警告：_close is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-fstatr.o): in function `.L0 ':
fstatr.c:(.text._fstat_r+0x14): 警告：_fstat is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-isattyr.o): in function `.L0 ':
isattyr.c:(.text._isatty_r+0x12): 警告：_isatty is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-lseekr.o): in function `.L0 ':
lseekr.c:(.text._lseek_r+0x16): 警告：_lseek is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-readr.o): in function `.L0 ':
readr.c:(.text._read_r+0x16): 警告：_read is not implemented and will always fail
/Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/bin/ld: /Users/huckies/riscv-gnu-toolchain/lib/gcc/riscv64-unknown-elf/11.1.0/../../../../riscv64-unknown-elf/lib/libc_nano.a(lib_a-writer.o): in function `.L0 ':
writer.c:(.text._write_r+0x16): 警告：_write is not implemented and will always fail
collect2: error: ld returned 1 exit status
make[2]: *** [ch582-ninja.elf] Error 1
make[1]: *** [CMakeFiles/ch582-ninja.elf.dir/all] Error 2
make: *** [all] Error 2

https://blog.csdn.net/feizaopaoxyz/article/details/116451549与这篇文章中提到的错误类似，但不知如何解决，请指教。

请问你加入lprintfloat是否想打印浮点值呢？如果是的话，本仓库已经移植了printf.c，可直接使用，并且占用较小。

[Huckies]

不是，我直接编的这个仓库里的工程，lprintfloat是在CMakeLists.txt里的，70行

[dreamcmi]

能否提供下你的工具链下载地址？

[Huckies]

https://github.com/riscv-collab/riscv-gnu-toolchain 该仓库最新的提交，编译安装
同时由于我是arm mac，编译之前注释掉了./riscv-gcc/gcc/config.host的第96、97行

96  # out_host_hook_obj=host-darwin.o
97  # host_xmake_file="${host_xmake_file} x-darwin"

[Huckies]

还有一个现象：若只使用makefile而不是用cmake，这些警告依然存在，却不会导致编译出错
makefile来自http://www.wch.cn/index.php/bbs/thread-74062-1.html，根据本仓库作了对应修改

[dreamcmi]

经过测试，通过使用mrs提供的win和linux gcc工具链，都可以正常编译，建议你找沁恒要一下mac的工具链再进行尝试。
http://www.mounriver.com/download

[Huckies]

感谢帮助，使用沁恒社区的makefile暂时能够编译成功，等评估板到了测试之后再决定是不是换系统吧

[Huckies]

感谢你的努力，目前虽然只能跑在rosetta转译下但已经可以正常编译