Function compile_package 

pub fn compile_package(
    pkg_src_dir: &Path,
    pkg_name: &str,
    output_dir: &Path,
    include_dir: &Path,
) -> Result<PathBuf, String>

Compile C/C++ source files in a package’s src/ directory into a shared library.

Uses the cc crate for compiler detection (respects CC, CXX, CFLAGS, CXXFLAGS env vars, handles cross-compilation). The cc crate compiles sources to .o files; we then link them into a .so/.dylib ourselves.

Arguments

• pkg_src_dir — the package’s src/ directory
• pkg_name — package name (used for the output library name)
• output_dir — directory to write the compiled shared library
• include_dir — path to miniR’s include/ directory (for Rinternals.h)

Returns

Path to the compiled shared library.