FindOpenACC: Provide import targets and OpenACC_<lang>_OPTIONS variable

Previously the FindOpenACC module had issues where the contents of
OpenACC_<lang>_FLAGS could not be used with target_compile_options
when it contained multiple compiler flags.

1 files changed, 44 insertions, 0 deletions

diff --git a/Tests/FindOpenACC/CTest/main.c b/Tests/FindOpenACC/CTest/main.c
new file mode 100644
index 0000000..53b6cae
--- /dev/null
+++ b/Tests/FindOpenACC/CTest/main.c
@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void vecaddgpu(float* r, float* a, float* b, int n)
+{
+#pragma acc kernels loop present(r, a, b)
+  for (int i = 0; i < n; ++i)
+    r[i] = a[i] + b[i];
+}
+
+int main()
+{
+  int n = 100000; /* vector length */
+  float* a;       /* input vector 1 */
+  float* b;       /* input vector 2 */
+  float* r;       /* output vector */
+  float* e;       /* expected output values */
+  int i, errs;
+
+  a = (float*)malloc(n * sizeof(float));
+  b = (float*)malloc(n * sizeof(float));
+  r = (float*)malloc(n * sizeof(float));
+  e = (float*)malloc(n * sizeof(float));
+  for (i = 0; i < n; ++i) {
+    a[i] = (float)(i + 1);
+    b[i] = (float)(1000 * i);
+  }
+/* compute on the GPU */
+#pragma acc data copyin(a [0:n], b [0:n]) copyout(r [0:n])
+  {
+    vecaddgpu(r, a, b, n);
+  }
+  /* compute on the host to compare */
+  for (i = 0; i < n; ++i)
+    e[i] = a[i] + b[i];
+  /* compare results */
+  errs = 0;
+  for (i = 0; i < n; ++i) {
+    if (r[i] != e[i]) {
+      ++errs;
+    }
+  }
+  return errs;
+}