<compare> not found during the build.

[YuanSha0]

My GCC version is 9.4.0, and I initially suspected that the GCC version was too low. Later, I changed the compiler to the latest version of Clang, but the error still persists. Can anyone help me? I will provide the terminal output next.

alive2/smt/expr.h:6:10: fatal error: compare: No such file or directory
6 | #include
| ^~~~~~~~~

[nunoplopes]

You need gcc 10 at least.
With clang, you may need to pass -stdlib=libc++ to CXXFLAGS to prevent clang from using gcc's headers.