LLVM supports (to various degrees) a number of experimental extensions.
All experimental extensions have experimental- as a prefix. There is
explicitly no compatibility promised between versions of the toolchain,
and regular users are strongly advised not to make use of experimental
extensions before they reach ratification.
Fix compile error:
riscv64-unknown-elf-clang: error: invalid arch name 'rv64gcv_zfh_zvfh', requires '-menable-experimental-extensions' for experimental extension 'zvfh'
Signed-off-by: chao an <anchao@lixiang.com>
-- Detecting CXX compile features
-- Detecting CXX compile features - done
arm-none-eabi-gcc: error: -Wstrict-prototypes: No such file or directory
arm-none-eabi-gcc: error: -Wstrict-prototypes: No such file or directory
-- Configuring done
-- Generating done
Signed-off-by: chao an <anchao@lixiang.com>
Ubuntu stock toolchain `gcc-riscv64-unknown-elf` complains about
current CMake system (see issue#11573). This tries to fix it so
that both newer XPack and stock toolchains can be used with CMake.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
To avoid build break:
ld: riscv-none-elf/lib/rv64imafdc_zicsr/lp64d/crt0.o: in function `.L0 ':
(.text+0x8): undefined reference to `__bss_start'
ld: (.text+0x10): undefined reference to `_end'
ld: (.text+0x36): undefined reference to `main'
collect2: error: ld returned 1 exit status
Signed-off-by: chao an <anchao@lixiang.com>
