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使用riscv工具链编译时的一个问题
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我在使用riscv工具链编译ncnn的时候出现一个错误： [ 99%] Built target ncnn [ 99%] Building CXX object benchmark/CMakeFiles/benchncnn.dir/benchncnn.cpp.obj [100%] Linking CXX executable benchncnn /home/Xuantie-900-gcc-elf-newlib-x86_64-V2.0.5/bin/../lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld: cannot find -lpthread collect2: error: ld returned 1 exit status make[2]: *** [benchmark/CMakeFiles/benchncnn.dir/build.make:98：benchmark/benchncnn] 错误 1 make[1]: *** [CMakeFiles/Makefile2:169：benchmark/CMakeFiles/benchncnn.dir/all] 错误 2 make: *** [Makefile:136：all] 错误 2
求教，这要咋解决？用的centos
我将src的cmakelists修改成：
if(NCNN_TARGET_ARCH STREQUAL "riscv")
target_compile_options(ncnn PRIVATE -march=rv32imafdcpzpsfoperand_xtheade -mabi=ilp32d -mcmodel=medlow -g2 -Os -DSHL_BUILD_REF -DSHL_BUILD_GREF -DSHL_BUILD_E907 -DSHL_BUILD_RTOS)
endif()
是可以得到elf32了，但是会出现错误：
[100%] Linking CXX executable benchncnn
/home/Xuantie-900-gcc-elf-newlib-x86_64-V2.0.5/bin/../lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld: ../src/libncnn.a(allocator.cpp.obj): ABI is incompatible with that of the selected emulation:
target emulation elf32-littleriscv' does not match elf64-littleriscv'
/home/Xuantie-900-gcc-elf-newlib-x86_64-V2.0.5/bin/../lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld: failed to merge target specific data of file ../src/libncnn.a(allocator.cpp.obj)
/home/Xuantie-900-gcc-elf-newlib-x86_64-V2.0.5/bin/../lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld: ../src/libncnn.a(benchmark.cpp.obj): ABI is incompatible with that of the selected emulation:
target emulation elf32-littleriscv' does not match elf64-littleriscv'
/home/Xuantie-900-gcc-elf-newlib-x86_64-V2.0.5/bin/../lib/gcc/riscv64-unknown-elf/10.2.0/../../../../riscv64-unknown-elf/bin/ld: failed to merge target specific data of file ../src/libncnn.a(benchmark.cpp.obj)
不知道咋解决