Add missing header

This was supposed to be in 7864dec.

diff --git a/source/core/mspgl_api.h b/source/core/mspgl_api.h
new file mode 100644 (file)
index 0000000..c3bb1c2
--- /dev/null
+++ b/source/core/mspgl_api.h
@@ -0,0 +1,18 @@
+#ifndef MSP_GL_API_H_
+#define MSP_GL_API_H_
+
+#if defined(_WIN32)
+#if defined(MSPGL_BUILD)
+#define MSPGL_API __declspec(dllexport)
+#elif defined(MSPGL_IMPORT)
+#define MSPGL_API __declspec(dllimport)
+#else
+#define MSPGL_API
+#endif
+#elif defined(__GNUC__)
+#define MSPGL_API __attribute__((visibility("default")))
+#else
+#define MSPGL_API
+#endif
+
+#endif