Cargo Features

pdftotext has no features set by default.

[dependencies]
pdftotext = { version = "0.1.5", features = ["static-poppler"] }
static-poppler = cmake

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

cmake build static-poppler?