## Enable OpenMP for the fused C++ kernel (crqa_fused.cpp). The
## $(SHLIB_OPENMP_CXXFLAGS) macro is provided by R's configure step and
## expands to the right flag for the active compiler (e.g. -fopenmp on
## gcc/clang). On platforms where OpenMP is unavailable, the macro
## expands to nothing and the kernel falls back to single-threaded
## execution thanks to the `#ifdef _OPENMP` guards in the source.
PKG_CXXFLAGS = $(SHLIB_OPENMP_CXXFLAGS)
PKG_LIBS     = $(SHLIB_OPENMP_CXXFLAGS)
