c++：错误：无法识别的命令行选项“-target”

Question

Im compiling a program I made using make and I get this error

c++: error: unrecognized command-line option ‘-target’
make[3]: *** [libs/system/CMakeFiles/system.dir/build.make:76: libs/system/CMakeFiles/system.dir/src/system/syscalls.cpp.o] Error 1
make[2]: *** [CMakeFiles/Makefile2:504: libs/system/CMakeFiles/system.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:243: CMakeFiles/image-uefi.dir/rule] Error 2
make: *** [Makefile:137: image-uefi] Error 2

Im running Arch Linux with Clang-13, CMake and all of base-devel installed.

Any help would be appreciated, please dont be condescending I just installed Arch Linux and am getting this error, in Fedora compiling the exact same app provides no error.

The line which created the error is this, it should be the offending linux since the error in question(the top line) complains about -target being unrecognized.

cd /home/user/toy-kernel/build/libs/system && /usr/bin/c++ -I/home/user/toy-kernel/libs/system/src -target x86_64-none-elf -mcmodel=kernel -fno-exceptions -fno-use-cxa-atexit -fno-rtti -nostdlib -ffreestanding -fno-threadsafe-statics -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-sse4.1 -mno-sse4.2 -mno-sse4a -mno-3dnow -mno-3dnowa -std=gnu++20 -MD -MT libs/system/CMakeFiles/system.dir/src/system/syscalls.cpp.o -MF CMakeFiles/system.dir/src/system/syscalls.cpp.o.d -o CMakeFiles/system.dir/src/system/syscalls.cpp.o -c /home/user/toy-kernel/libs/system/src/system/syscalls.cpp

Answer 1

In my case, c++ was the g++ compiler instead of the clang compiler, if you are having a similar issue try updating g++ or clang++(on older macs you may need to have to use brew to install those) or going in your /usr/bin directory(for mac and linux, I never used windows cant help you) and replacing the files(though only do that if you absolutely know what your doing.).