On Sunday, 17 October 2021 at 10:46:30 UTC, data pulverizer wrote: > Okay wow, this is amazing, I can now call R's standalone math > library `Rmath.h` by converting ... Sorry you don't need `-lRmath` so the initial call should be: ``` gcc -E -P -I"/usr/share/R/include" r2d_con.c > r2d.c ```