Cargo Features

exprtk_sys has no features set by default.

[dependencies]
exprtk_sys = { version = "0.1.0", features = ["sc_andor", "rtl_vecops", "superscalar_unroll", "caseinsensitivity"] }
debug comments break_continue sc_andor
return_statement rtl_io_file rtl_vecops
enhanced_features superscalar_unroll
caseinsensitivity

exprtk_sys has 4 features without comments.