Native Code Support

miniR compiles and loads native code from CRAN packages using the cc crate for C/C++ and gfortran for Fortran.

How It Works

When loadNamespace("pkg") encounters a package with src/ containing C/C++/Fortran files:

Parse Makevars --- reads src/Makevars (or Makevars.in with pkg-config resolution)
Compile sources --- C via cc, C++ via cc with -std=c++17, Fortran via gfortran
Link --- produces libs/pkg.dylib with -shared, linking against system BLAS/LAPACK
Load --- dyn.load() loads the dylib, R API symbols resolve from the miniR binary

Convention	Implementation
`.Call(name, args...)`	Direct C function call, SEXP args/return
`.External(name, args...)`	Pairlist-based argument passing
`.C(name, args...)`	C-style pass-by-reference with type coercion
`.Fortran(name, args...)`	Same as `.C` with Fortran name mangling

For packages with Makevars.in (anticonf pattern), miniR resolves @cflags@ and @libs@ placeholders via pkg-config:

openssl  -> pkg-config openssl
xml2     -> pkg-config libxml-2.0
stringi  -> pkg-config icu-i18n
sodium   -> pkg-config libsodium

Some packages need platform-specific configuration that normally comes from ./configure:

Package	Emulation
ps	Generates `config.h` with `PS__POSIX`, `PS__MACOS` macros + platform-specific object list
fs	Uses system libuv via pkg-config instead of bundled autotools build
sass	Uses system libsass via pkg-config instead of bundled make build

miniR implements 200+ C API functions as extern "C" Rust functions:

All R-compatible headers are in include/miniR/: