gcc pthreads: build pthreads and mingw-w64 headers inline and enable libgomp

* fixes "~winpthreads changes ~pthread_signal.h" etc. reported by build-pkg
  mingw-w64 installs dummy headers if winpthreads isn't built
* enables libgomp to avoid double-build (see #331)
* no change in openmp-validation (still 20 failures - taken with a grain of
  salt as the batch file test runner isn't a reliable perl substitute)
* pthreads virtual package kept for future testing

1 files changed, 21 insertions, 0 deletions

diff --git a/src/pthreads-libgomp-test.c b/src/pthreads-libgomp-test.c
new file mode 100644
index 0000000..20068e6
--- /dev/null
+++ b/src/pthreads-libgomp-test.c
@@ -0,0 +1,21 @@
+/*
+ * This file is part of MXE.
+ * See index.html for further information.
+ */
+
+#include <omp.h>
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+    (void)argc;
+    (void)argv;
+
+    omp_set_num_threads(4);
+
+    #pragma omp parallel
+    fprintf(stderr, "Hello from thread %d, nthreads %d\n",
+            omp_get_thread_num(), omp_get_num_threads());
+
+    return 0;
+}