disable unsupported omp in msvc fixes #9

setup.py

@@ -196,7 +196,7 @@ def test_supports_compile_arg(self, comm, with_omp=False):
      'cython'
     ],
     python_requires = ">=3",
-    version = '0.1.2.13-11',
+    version = '0.1.2.13-12',
     description = 'Reductions for Cost-Sensitive Multi-Class Classification',
     author = 'David Cortes',
     url = 'https://github.com/david-cortes/costsensitive',

src/calcv.c

@@ -108,7 +108,11 @@ int calculate_V(double C[], double V[], size_t nrow, size_t ncol, int nthreads)
         goto cleanup;
     }
 
-    #pragma omp parallel for schedule(static) num_threads(nthreads) firstprivate(C, V, nrow, ncol)
+    #ifdef _OPENMP
+        #if !defined(_MSC_VER) && _OPENMP>20080101
+            #pragma omp parallel for schedule(static) num_threads(nthreads) firstprivate(C, V, nrow, ncol)
+        #endif
+    #endif
     for (size_t row = 0; row < nrow; row++) {
         argsort_naive_dbl(C + row * ncol, inner_order, buffer_argsort_dbl, ncol);
         calc_cost(C + row * ncol, cost_buffer, inner_order, ncol);
@@ -120,7 +124,11 @@ int calculate_V(double C[], double V[], size_t nrow, size_t ncol, int nthreads)
     }
 
     cleanup:
-        #pragma omp parallel
+    #ifdef _OPENMP
+        #if !defined(_MSC_VER) && _OPENMP>20080101
+            #pragma omp parallel
+        #endif
+    #endif
         {
             free(inner_order);
             free(buffer_argsort_dbl);