build.zig: support multiple args in `cxx_compiler_arg1`
An example of this happening is during CI runs where it has a value such
as `c++ -target x86_64-linux-musl -mcpu=baseline`.
51e96a823cJacob Young committed on 2/16/2024, 10:37:20 AM· committed by Andrew Kelleyparent6f08e17