Sorry that I may not fully understand you because of my poor English.
I have tried to build with USE='gtk -X gui', and it still failed


This is the error I got:

/usr/bin/x86_64-pc-linux-gnu-ld: pgtkterm.o: undefined reference to symbol 'dlsym@@GLIBC_2.2.5'
/usr/bin/x86_64-pc-linux-gnu-ld: /lib64/libdl.so.2: error adding symbols: DSO missing from command line
clang-13: error: linker command failed with exit code 1 (use -v to see invocation)


you can access my full build log here: https://gist.github.com/C-Entropy/65dd4bb3b04ebe347e86c0a9ed1d67ce