https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123907
--- Comment #3 from 罗勇刚(Yonggang Luo) <luoyonggang at gmail dot com> --- I am using crosstool-ng to building, the gcc configure args is: $ ../../src/gcc/configure --build=x86_64-build_w64-mingw32 --host=x86_64-build_w64-mingw32 --target=riscv64-unknown-elf --prefix=/home/lygstate/x-tools/riscv64-unknown-elf --exec_prefix=/home/lygstate/x-tools/riscv64-unknown-elf --with-local-prefix=/home/lygstate/x-tools/riscv64-unknown-elf/riscv64-unknown-elf --with-headers=/home/lygstate/x-tools/riscv64-unknown-elf/riscv64-unknown-elf/include --with-newlib --enable-threads=no --disable-shared --with-arch=rv64gc --with-pkgversion=crosstool-NG UNKNOWN --enable-__cxa_atexit --disable-libgomp --disable-libmudflap --disable-libmpx --enable-libquadmath --enable-libquadmath-support --disable-libstdcxx-verbose --enable-libstdcxx --disable-libstdcxx-hosted --with-gmp=/d/work/ct-ng/ct-ng-riscv64/.build/riscv64-unknown-elf/buildtools --with-mpfr=/d/work/ct-ng/ct-ng-riscv64/.build/riscv64-unknown-elf/buildtools --with-mpc=/d/work/ct-ng/ct-ng-riscv64/.build/riscv64-unknown-elf/buildtools --with-isl=/d/work/ct-ng/ct-ng-riscv64/.build/riscv64-unknown-elf/buildtools --enable-lto --enable-target-optspace --disable-plugin --disable-nls --enable-multiarch --with-multilib-generator=rv64imac_zicsr_zifencei-lp64--;rv64imafc_zicsr_zifencei-lp64f--;rv64imafdc_zicsr_zifencei-lp64d--;rv64imafdc_zicsr_zifencei-lp64-- --enable-languages=c,c++ --with-cmodel=medany
